M68AW511AM70NC6F ,4 MBIT (512K X8) 3.0V ASYNCHRONOUS SRAMBlock Diagram . . 6OPERATION . . . . . . 7Read Mode . . . . 7Write Mode ..
M68AW512ML70ND6 ,8 MBIT (512K X16) 3.0V ASYNCHRONOUS SRAMAbsolute Maximum Ratings 7DC AND AC PARAMETERS . . 8Table 4. Operating and AC Measuremen ..
M68AW512-ML70ND6 ,8 MBIT (512K X16) 3.0V ASYNCHRONOUS SRAMLogic Diagram Table 1. Signal NamesA0-A16 Address InputsVCCDQ0-DQ15 Data Input/OutputE Chip Enable1 ..
M68Z128 ,5V, 1 Mbit (128Kb x8) Low Power SRAM with Output EnableAbsolute Maximum Ratings(Table2.) .... ...... ....... ...... ....... ...... ...... .....4DC AND AC ..
M68Z128-55N1 ,5V / 1 Mbit 128Kb x8 Low Power SRAM with Output EnableAbsolute Maximum Ratings" maycause permanent damage to the device. These are stress ratings only an ..
M69AR024BL70ZB8 ,16 Mbit (1M x16) 1.8V Supply, Asynchronous PSRAMLogic Diagram . . 4Table 1. Signal Names . . 4Figure 3. TFBGA Connections (Top view t ..
MAX1106CUB ,Single-Supply / Low-Power / Serial 8-Bit ADCsELECTRICAL CHARACTERISTICS—MAX1106(V = +2.7V to +3.6V; IN- to GND; f = 2MHz; 25ksps conversion rate ..
MAX1106EUB ,Single-Supply / Low-Power / Serial 8-Bit ADCsFeaturesThe MAX1106/MAX1107 low-power, 8-bit, single-channel,' Single Supply: +2.7V to +3.6V (MAX11 ..
MAX1106EUB+T ,Single-Supply, Low-Power, Serial 8-Bit ADCsApplicationsMAX1107CUB 0°C to +70°C 10 μMAXPortable Data LoggingMAX1107EUB -40°C to +85°C 10 μMAXHa ..
MAX1108CUB ,Single-Supply / Low-Power / 2-Channel / Serial 8-Bit ADCsMAX1108/MAX110919-1399; Rev 0; 10/98Single-Supply, Low-Power, 2-Channel, Serial 8-Bit ADCs
MAX1108EUB+T ,Single-Supply, Low-Power, 2-Channel, Serial 8-Bit ADCsApplicationsMAX1108EUB -40°C to +85°C 10 µMAXPortable Data LoggingMAX1109CUB 0°C to +70°C 10 µMAXHa ..
MAX1109CUB ,Single-Supply / Low-Power / 2-Channel / Serial 8-Bit ADCsELECTRICAL CHARACTERISTICS—MAX1108(V = +2.7V to +3.6V; unipolar input mode; COM = GND, f = 500kHz, ..
M68AW511AM70MC6U-M68AW511AM70NC6-M68AW511-AM70NC6-M68AW511AM70NC6F
4 MBIT (512K X8) 3.0V ASYNCHRONOUS SRAM
M68AW511A4 Mbit (512K x8) 3.0V Asynchronous SRAM
FEATURES SUMMARY SUPPLY VOLTAGE: 2.7 to 3.6V 512K x 8 bits SRAM with OUTPUT ENABLE EQUAL CYCLE and ACCESS TIMES: 55ns LOW STANDBY CURRENT LOW VCC DATA RETENTION: 1.5V TRI-STATE COMMON I/O LOW ACTIVE and STANDBY POWER
Figure 1. Packages
M68AW511A
TABLE OF CONTENTS
FEATURES SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1Figure 1. Packages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
SUMMARY DESCRIPTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Figure 2. Logic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Table 1. Signal Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Figure 3. TSOP and SO Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Figure 4. Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Read Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Write Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Table 2. Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
MAXIMUM RATING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8Table 3. Absolute Maximum Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
DC AND AC PARAMETERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9Table 4. Operating and AC Measurement Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Figure 5. AC Measurement I/O Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Figure 6. AC Measurement Load Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Table 5. Capacitance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Table 6. DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Figure 7. Address Controlled, Read Mode AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Figure 8. Chip Enable or Output Enable Controlled, Read Mode AC Waveforms.. . . . . . . . . . . . .11
Figure 9. Chip Enable Controlled, Standby Mode AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . .12
Table 7. Read and Standby Mode AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Figure 10.Write Enable Controlled, Write AC Waveforms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Figure 11.Chip Enable Controlled, Write AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Table 8. Write Mode AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Figure 12.Low VCC Data Retention AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Table 9. Low VCC Data Retention Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
PACKAGE MECHANICAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17Figure 13.TSOP 32 Type II - 32 lead Plastic Thin Small Outline Type II, Package Outline . . . . . .17
Table 10. TSOP32 Type II - 32 lead Plastic Thin Small Outline Type II, Package Mechanical
Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Figure 14.SO32 - 32 lead Plastic Small Outline, Package Outline . . . . . . . . . . . . . . . . . . . . . . . . .18
Table 11. SO32 - 32 lead Plastic Small Outline, Package Mechanical Data. . . . . . . . . . . . . . . . . .18
PART NUMBERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19Table 12. Ordering Information Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
M68AW511A
REVISION HISTORY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20Table 13. Document Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
M68AW511A
SUMMARY DESCRIPTIONThe M68AW511A is a 4 Mbit (4,194,304 bit)
CMOS SRAM, organized as 524,288 words by 8
bits. The device features fully static operation re-
quiring no external clocks or timing strobes, with
equal address access and cycle times. It requires
a single 2.7 to 3.6V supply.
This device has an automatic power-down feature,
reducing the power consumption by over 99%
when deselected.
The M68AW511A is available in two different
packages: 32-lead TSOP Type II and 32-lead SO.
Table 1. Signal Names
M68AW511A
M68AW511A
M68AW511A
OPERATION
The M68AW511A has a Chip Enable power down
feature which invokes an automatic standby mode
whenever Chip Enable is de-asserted (E = High).
An Output Enable (G) signal provides a high
speed tri-state control, allowing fast read/write cy-
cles to be achieved with the common I/O data bus.
Operational modes are determined by device con-
trol inputs W and E as summarized in the Operat-
ing Modes table (Table 2).
Read Mode
The M68AW511A is in the Read mode whenever
Write Enable (W) is High with Output Enable (G)
Low, and Chip Enable (E) is asserted. This pro-
vides access to data from eight of the 4,194,304
locations in the static memory array, specified by
the 19 address inputs. Valid data will be available
at the eight output pins within tAVQV after the last
stable address, providing G is Low and E is Low.
If Chip Enable or Output Enable access times are
not met, data access will be measured from the
limiting parameter (tELQV or tGLQV) rather than the
address. Data out may be indeterminate at tELQX
and tGLQX, but data lines will always be valid at
tAVQV.
Write Mode
The M68AW511A is in the Write mode whenever
the W and E pins are Low. Either the Chip Enable
input (E) or the Write Enable input (W) must be de-
asserted during Address transitions for subse-
quent write cycles. Write begins with the concur-
rence of Chip Enable being active with W low.
Therefore, address setup time is referenced to
Write Enable and Chip Enable as tAVWL and tAVEH
respectively, and is determined by the latter occur-
ring edge.
The Write cycle can be terminated by the earlier
rising edge of E, or W.
if the Output is enabled (E = Low and G = Low),
then W will return the outputs to high impedance
within tWLQZ of its falling edge. Care must be taken
to avoid bus contention in this type of operation.
Data input must be valid for tDVWH before the ris-
ing edge of Write Enable, or for tDVEH before the
rising edge of E, whichever occurs first, and re-
main valid for tWHDX or tEHDX.
Table 2. Operating Modes
Note: X = VIH or VIL.
M68AW511A
MAXIMUM RATING
Stressing the device above the rating listed in the
Absolute Maximum Ratings" table may cause per-
manent damage to the device. These are stress
ratings only and operation of the device at these or
any other conditions above those indicated in the
Operating sections of this specification is not im-
plied. Exposure to Absolute Maximum Rating con-
ditions for extended periods may affect device
reliability. Refer also to the STMicroelectronics
SURE Program and other relevant quality docu-
ments.
Table 3. Absolute Maximum Ratings
Note:1. One output at a time, not to exceed 1 second of duration. Up to a maximum operating VCC of 3.6V only.
M68AW511A
DC AND AC PARAMETERS
This section summarizes the operating and mea-
surement conditions, as well as the DC and AC
characteristics of the device. The parameters in
the following DC and AC Characteristic tables are
derived from tests performed under the Measure-
ment Conditions listed in the relevant tables. De-
signers should check that the operating conditions
in their projects match the measurement condi-
tions when using the quoted parameters.
Table 4. Operating and AC Measurement Conditions
Figure 5. AC Measurement I/O Waveform Figure 6. AC Measurement Load Circuit
M68AW511A
Table 5. Capacitance
Note:1. Sampled only, not 100% tested. At TA = 25°C, f = 1MHz, VCC = 3.0V.
Table 6. DC Characteristics
Note:1. Average AC current, cycling at tAVAV minimum. E = VIL, VIN = VIH or VIL. E ≤ 0.2V, VIN ≤ 0.2V or VIN ≥ VCC – 0.2V. Output disable.
M68AW511A
Figure 7. Address Controlled, Read Mode AC Waveforms
Note: E = Low, G = Low, W = High.
Figure 8. Chip Enable or Output Enable Controlled, Read Mode AC Waveforms
Note: Write Enable (W) = High.
