ST7LNB1Y0M6 ,8-bit MCUThermal characteristics . . . . . . 336.3 Soldering information 337 Revision history ..
ST7MDT10-EMU3 ,ST7-EMU3features, including advanced breakpoints and performance ST7analysis. In addition, the EMU3 include ..
ST7MDTU3-EPB/EU ,ST7 One position programming board,APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY ..
ST7MDTU3-EPB/US ,ST7 One position programming board,Features■ In-circuit programming or in-situ programming of various ST7 devices (depending on the EP ..
ST8004CD ,SMARTCARD INTERFACEST8004SMARTCARD INTERFACE
ST7LNB1Y0M6
8-bit MCU
July 2007 Rev 8 1/36
ST7LNB1Y0DiSEqC™ slave microcontroller
for SaTCR based LNBs and switchers
Features Clock, reset and supply management Reduced power consumption Safe power on/off management
by low voltage detector (LVD) Internal 8 MHz oscillator Communication interface Two DiSEqCTM communication interfaces
–Four I2 C communication interfaces I/O ports 4 output pins for control of a legacy matrix
DescriptionThe ST7LNB1Y0 is an 8-bit microcontroller
dedicated to DiSEqC slave operation in SaTCR
based LNBs (low-noise blocks) and switchers.
Figure 1. Block diagram
Table 1. Device summary
Contents ST7LNB1Y02/36
Contents Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.1 SaTCRs mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Application example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103.1 ST7LNB1Y0 applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2 DiSEqC-ST commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2.1 Command signalling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.2.2 Look up tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.3 DiSEqC 1.0 command for legacy support . . . . . . . . . . . . . . . . . . . . . . . . 15
ST7LNB1Y0 configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164.1 Command 0Fh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.2 Command 0Dh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205.1 Parameter conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.1.1 Minimum and maximum values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.1.2 Typical values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.1.3 Typical curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.1.4 Loading capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.1.5 Pin input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.2 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.3 Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.4 Supply current characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.4.1 Supply current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.5 EMC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.5.1 Functional EMS (electromagnetic susceptibility) . . . . . . . . . . . . . . . . . . 25
5.5.2 Electromagnetic Interference (EMI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.5.3 Absolute maximum ratings (electrical sensitivity) . . . . . . . . . . . . . . . . . 26
5.6 I/O port pin characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
ST7LNB1Y0 Contents 3/36
5.6.1 General characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.6.2 Output driving current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.7 Control pin characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.7.1 Asynchronous RESET pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Package characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326.1 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
6.2 Thermal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.3 Soldering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
List of tables ST7LNB1Y0
4/36
List of tables
Table 1. Device summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Pin functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 3. SaTCRs implementation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 4. Application types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 5. DiSEqC-ST command format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 6. ODU_SaTCR_Op (5Ah) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 7. ODU_SaTCR_Inst(5Bh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 8. DiSEqC-ST command examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 9. Feeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 10. Local oscillator frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 11. ST7LNB1Y0 applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 12. Legacy commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 13. Command 0Fh format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 14. Command 0Dh format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 15. Reply frame format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 16. ST7LNB1Y0 EEPROM parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 17. Truth table for support of 8 RF inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 18. Voltage characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 19. Current characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 20. Thermal characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 21. General operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table 22. Operating Conditions with Low Voltage Detector (LVD). . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table 23. Operating conditions with the DiSEqC™ signalling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table 24. Supply current characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Table 25. EMS characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 26. EMI characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Table 27. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Table 28. Electrical sensitivities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table 29. General characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Table 30. Output driving current characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Table 31. Asynchronous RESET pin characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Table 32. SO16 16-pin plastic small outline-150mil width, package mechanical data . . . . . . . . . . . . 32
Table 33. Thermal characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Table 34. Soldering compatibility (wave and reflow soldering process) . . . . . . . . . . . . . . . . . . . . . . . 33
Table 35. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
ST7LNB1Y0 List of figures
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List of figures
Figure 1. Block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 2. SO16 narrow pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. ST7LNB1Y0 in the Twin SaTCR and legacy (standard RF band) application . . . . . . . . . . . 8
Figure 4. ST7LNB1Y0 in the Twin SaTCR application with one input only . . . . . . . . . . . . . . . . . . . . . 9
Figure 5. SaTCR control block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 6. SaTCR control and legacy (standard RF band) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 7. SaTCR control and legacy (wide RF band) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 8. Signalling of the DiSEqC-ST command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 9. Pin loading conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 10. Pin input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 11. Typical IDD in RUN vs. fCPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 12. Two typical applications with unused I/O pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 13. Typical IPU vs. VDD with VIN=VSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 14. Typical VOL at VDD=5 V (standard). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 15. Typical VOL at VDD=5V (high sink) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 16. Typical VDD-VOH at VDD=5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 17. SO16 16-pin plastic small outline -150mil width, package outline . . . . . . . . . . . . . . . . . . . 32
Pin description ST7LNB1Y0
6/36
1 Pin description
Figure 2. SO16 narrow pinout NC = Not Connected
See Table 2 for a description of the pin functions.
Table 2. Pin functions If only one input is required by the application, DRX1 must be used by default. DiSEqC-ST: special DiSEqC command set for SaTCRs control (refer to Section 3.2 for more details). DiSEqC 1.0: refer to Section3.3. Unused pins must be tied to ground. During normal operation this pin must not be pulled-down.
ST7LNB1Y0 Implementation
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2 Implementation
2.1 SaTCRs mapping
The ST7LNB1Y0 could communicate through I2 C with up to 8 SaTCRs (refer to Table3).
The following hardware implementation of SaTCRs must be respected:
Table 3. SaTCRs implementation As a convention, SaTCR1 must be associated to the BPF having the lowest center frequency of the
application, SaTCR2 to the BPF having the next higher center frequency and so on.
Implementation ST7LNB1Y0
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2.2 Application example
Figure 3 and Figure 4 show example application circuits for the ST7LNB1Y0 with and
without legacy signal.
Figure 3. ST7LNB1Y0 in the Twin SaTCR and legacy (standard RF band) application The divider chain connected to the DRX1 and DRX2 pins must have the following resistance values: 330KΩ and 100 KΩ. Unused I2 C lines (14,13) have to be linked to VCC through 12 KΩ resistors. RTA-STB: remote tuning able set-top box (STB supporting SaTCR control). The transistor is optional, it is used for EEPROM parameters bytes reading using DiSEqC. During normal operation this pin must not be pulled-down. When the LVD is enabled (default state), it is mandatory not to connect a pull-up resistor. A 10 nF pull-down capacitor is
recommended to filter noise on the reset line.
ST7LNB1Y0 Implementation
9/36
Figure 4. ST7LNB1Y0 in the Twin SaTCR application with one input only NC = Not Connected. The divider chain connected to the DRX1 pins must have the following resistance values: 330 KΩ and 100 KΩ. Unused I2 C lines (SCL2,SDA2) have to be linked to VCC through 12 KΩ resistors. RTA-STB: Remote Tuning Able Set Top Box (STB supporting SaTCR control). The transistor is optional, it is used for EEPROM parameters bytes reading using DiSEqC. During normal operation this pin must not be pulled-down. When the LVD is enabled (default state), it is mandatory not to connect a pull-up resistor. A 10 nF pull-down capacitor is
recommended to filter noise on the reset line.
Functional description ST7LNB1Y0
10/36
3 Functional description
3.1 ST7LNB1Y0 applications
The ST7LNB1Y0 is intended to be used in different LNB switcher applications supporting
SaTCRs.
Three main types of applications could be distinguished (see Table4).
An EEPROM parameter will be used for configuring the ST7LNB1Y0 for a particular
application type (refer to Section 4 for more details on how to program the EEPROM
parameter).
Figure 5. SaTCR control block diagram
Figure 6. SaTCR control and legacy (standard RF band)
Table 4. Application types This application could support up to 8 RF feeds. (applications 1 and 2 are limited to 4 RF feeds).
ST7LNB1Y0 Functional description
11/36
Figure 7. SaTCR control and legacy (wide RF band)
3.2 DiSEqC-ST commands
To control SaTCR based LNBs and switchers, two new DiSEqC commands are used: ODU_SatCR_Op (5Ah): this command is used during LNB or switcher normal
operation. ODU_SatCR_Inst (5Bh): this command is used only during the LNB or switcher
installation.
Both commands frames must have the following DiSEqC format:
Different subcommands are defined, depending on the data bytes which are sent (refer to
Table 6 and Table7).
Table 5. DiSEqC-ST command format All commands accept E0h or E2h framing. Whatever the command, if E2h framing is used, then the MCU sends at least
the response E4h (refer to Section4.2).
Table 6. ODU_SaTCR_Op (5Ah) SaTCR: SaTCR number [0 to 7] (refer to Table3). Feed: matrix RF input [0 to 7] (refer to Table9). Tun[9:0]: tuning word.
Functional description ST7LNB1Y0
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3.2.1 Command signalling
In order to be detected, the DiSEqC-ST commands must be sent after a voltage change
from 13 to 18 V . A delay time, t, between 4 ms and 24 ms must be respected before sending
the DiSEqC-ST commands (see Figure8).
Figure 8. Signalling of the DiSEqC-ST command
Table 7. ODU_SaTCR_Inst(5Bh) ODU_Config: When receiving this command the ST7LNB1Y0 checks if the Polonium indicated in data1 corresponds to the
ST7LNB1Y0 application number, if it is the case the ST7LNB1Y0 commands SaTCR indicated in data1 to send a tone
having as frequency F = FbpfSaTCR else F = FbpfSaTCR + 20 MHz. AppliNum: application number [1 to FFh] (refer toTable11). ODU_Lofreq: When receiving this command the ST7LNB1Y0 checks if the LOfreqNum indicated in data1 corresponds to
the one of the L.Os present in the application, if it is the case the ST7LNB1Y0 commands SaTCR indicated in data1 to
send a tone having as frequency F = FbpfSaTCR else F = FbpfSaTCR + 20 MHz. LofreqNum: Local oscillator table entry number [1 to FFh] (refer to Table10).
Table 8. DiSEqC-ST command examples
ST7LNB1Y0 Functional description
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3.2.2 Look up tables
Table 9. Feeds(1) Applications supporting legacy are limited to one satellite only (satellite A).
Table 10. Local oscillator frequencies
Functional description ST7LNB1Y0
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Table 11. ST7LNB1Y0 applications TBD stands for to be defined.
Table 10. Local oscillator frequencies (continued)
ST7LNB1Y0 Functional description
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3.3 DiSEqC 1.0 command for legacy support
The DiSEqC 1.0 commands for the control of the legacy are the following: 00h: this command is used to restore the backwards compatibility. 38h: this command is used to write to port group command.
For application supporting the legacy (except for application 1), the backwards signalling
(13/18 V, 22 kHz tone) is recognized until a valid DiSEqC 1.0 command is detected.
The following table presents the truth table for the legacy commands:
Table 12. Legacy commands
ST7LNB1Y0 configuration ST7LNB1Y0
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4 ST7LNB1Y0 configuration
To configure the ST7LNB1Y0 for the required target application, a dedicated DiSEqC
command is implemented. This configuration is stored in the ST7LNB1Y0 embedded
EEPROM location.
4.1 Command 0Fh
ST7LNB1Y0 devices are shipped to customers with a default parameter value. These
parameters can be updated using a dedicated 0Fh DiSEqC command.
This command has the following format where “data” is the parameter value to be
programmed at the “index” location as shown in Table16.
Note: The special command E0 xx 0F FF FF protects the EEPROM data from any subsequent
write access (where xx is the corresponding DiSEqC slave address).
4.2 Command 0Dh
For reading a parameter inside the EEPROM a dedicated 0Dh command has been added.
The command format is described in Table 14, where “index” is the address of the byte to be
read from EEPROM.
The format of the reply frame is given in Table 15, format where “data” is the byte read from
EEPROM.
Timings
The time required to update a byte parameter (write and read operation) is 130 ms, while
the time required to update all parameters is about 3.5s.
Table 13. Command 0Fh format
Table 14. Command 0Dh format E2h framing (and E4h response) is supported from version 1.1 of the LNB1 software (previously, the
command 0Dh was implemented with E0h framing and the data response was without E4h framing). After the Command 0Dh, there is a delay of 10ms before getting the reply frame.
Table 15. Reply frame format
ST7LNB1Y0 ST7LNB1Y0 configuration
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Table 16. ST7LNB1Y0 EEPROM parameters
ST7LNB1Y0 configuration ST7LNB1Y0
18/36 Besides the address defined in the EEPROM at index 00h, addresses 10h and 00h are recognized also as valid addresses. SaTCRX BPF = BPFX center frequency (MHz) / 2. When an application supports the wide RF band only one local oscillator with a frequency FLO is present in the LNB. In this
case the selection of the high or the low band for the legacy output is performed by a dedicated SaTCR.
Two parameters are needed for the band selection:
- The tuning word for the low band selection = [(FLO (MHz) - FLow (MHz))/ 4] - 350: where FLow corresponds to the Low LO
frequency.
- The tuning word for the high band selection = [(FLO (MHz) - FHigh (MHz))/4] - 350: where FHigh corresponds to the High band
LO frequency.
Example: in a wide band application with FLO= 13250 MHz, for emulating a low band local oscillator at 9750 MHz, index
0Dh and index 0Eh must be loaded with the decimal value D = dec [0D:0E] = round ((13250-9750)/4) - 350 = 525. Matrix truth table for SaTCRx or legacy:
- If 4 RF inputs are implemented then the matrix truth table has the following coding on 2 bytes: “aaaabbbb ccccdddd”
where:
aaaa= selection of Feed1 on SaTCRx, aaaa = [MAT4, MAT3, MAT2, MAT1]
bbbb= selection of Feed0 on SaTCRx, bbbb = [MAT4, MAT3, MAT2, MAT1]
cccc = selection of Feed3 on SaTCRx, cccc = [MAT4, MAT3, MAT2, MAT1]
dddd= selection of Feed2 on SaTCRx,dddd = [MAT4, MAT3, MAT2, MAT1]
- If 8RF inputs are implemented then the truth table given in Table 17 is used.
Table 16. ST7LNB1Y0 EEPROM parameters (continued)
