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ST7590-ST7590T
OFDM Narrowband Power Line Networking System on Chip
October 2011 Doc ID 18349 Rev 1 1/24
ST7590Narrow-band OFDM power line networking
PRIME compliant system-on-chip
Features Fully integrated narrow-band power line
networking system-on-chip High performing DSP engine with embedded
turn-key firmware for Orthogonal frequency
division multiplexing (OFDM) modulation,
featuring: 96 sub-carriers in CENELEC A band BDPSK, QDPSK, 8DPSK programmable
modulations Programmable bit rate up to 128 kbps Convolutional coding and Viterbi decoding Signal to noise ratio and channel quality
estimation Full PRIME compliant PHY On chip peripherals: Host controller UART/SPI interface I2C/SPI external data memory interface High speed SRAM controller for optional
external SRAM program code execution Watchdog timer On chip 128 bit AES encryption HW block Fully integrated analog front end: ADC and DAC High sensitivity receiver High linearity transmitter with intelligent
gain control Fully integrated power line driver Up to 1 Arms, 14 Vpp single ended Configurable active filtering topology Ultra low distortion Embedded temperature sensor Current control 3.3 V or 5 V I/O digital I/O supply Integrated 5 V and 1.8 V linear regulators for
AFE and digital core supply 8 V to 18 V line driver power supply Suitable for applications compliant with
EN50065 and FCC part 15 specifications -40 °C to +85 °C temperature range QFN48 7x7 (ST7590) and TQFP 100 14x14
(ST7590T) exposed pad package options
ApplicationPRIME compliant smart metering and smart grid
applications.
DescriptionST7590 is the first complete Narrowband OFDM
power line communication system-on-chip made
using a multi-power technology with state of the
art VLSI CMOS lithography. The ST7590 is based
on dual core architecture to assure outstanding
communication performance with a very high level
of flexibility and programmability for either open
standard or fully customized implementations.
Contents ST75902/24 Doc ID 18349 Rev 1
Contents Device description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Analog front end (AFE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144.1 Reception path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2 T ransmission path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.3 Power amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.4 Thermal shutdown and temperature control . . . . . . . . . . . . . . . . . . . . . . . 15
4.5 Zero-crossing detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.6 One time programmable (OTP) memory array . . . . . . . . . . . . . . . . . . . . . 16
4.7 Power management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.8 Clock management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
ST7590 Device description
Doc ID 18349 Rev 1 3/24
1 Device description
ST7590 is available in two different package options: TQFP100 and QFN48.
In the TQFP100 package option, order code ST7590T, the device comes with a dedicated
FW implementing PRIME compliant PHY protocol Layer and a boot loader procedure that
enables the IC to boot PRIME MAC, PRIME CL432 Convergence Layer and IEC 61334-4-
32 LLC Layer from an external Serial NV memory connected through SPI interface.
In the QFN 48 package option, ST7590 comes with a dedicated FW implementing the full
PRIME protocol stack (PHY, MAC and Convergence Layer), so without the need for external
memories to run the protocol.
The on-chip analog front end, featuring analog to digital and digital to analog conversion and
automatic gain control, plus the integrated power amplifier delivering up to 1 Arms (typical)
output current, makes the ST7590 the first complete Narrowband OFDM power line
communication system-on-chip ideal for PRIME compliant applications.
An HW 128-bit AES encryption block with PRIME compliant management is available on
chip when secure communication is requested.
Line coupling network design is also extremely simplified, leading to a very low cost Bill Of
Material.
Safe operations are assured while keeping power consumption and distortion levels very
low, so making ST7590 an ideal platform for the most stringent application requirements and
regulatory standards compliance.
Figure 1. ST7590 block diagram
Pin connection ST7590
4/24 Doc ID 18349 Rev 1
2 Pin connection
Figure 2. TQFP100 pin connection
Figure 3. QFN48(a) pin connection The QFN48 package option does not allow the connection with an external memory; in this configuration the
ST7590 will run the code present in the embedded ROM only.
ST7590 Pin connection
Doc ID 18349 Rev 1 5/24
Table 1. Pin description
Pin connection ST7590
6/24 Doc ID 18349 Rev 1
Table 1. Pin description (continued)
ST7590 Pin connection
Doc ID 18349 Rev 1 7/24 Active Pull up (only in input mode for bi-directional pins)
Table 1. Pin description (continued)
Maximum ratings ST7590
8/24 Doc ID 18349 Rev 1
3 Maximum ratings
3.1 Absolute maximum ratings
3.2 Thermal data
Table 2. Absolute maximum ratings
Table 3. Thermal characteristics (1) Typical values. Mounted on a 2s PCB. Mounted on a 2s2p PCB, with a dissipating surface, connected through vias, on the bottom side of the
PCB.
Maximum ratings ST7590
9/24 Doc ID 18349 Rev 1
3.3 Electri
cal
aracteristics
= -
to
°C
< 12
5 °C
= 18
V un
less ot
rwise specif
ied
e 4.
ara
Maximum ratings ST7590
10/24 Doc ID 18349 Rev 1
e 4.
ara
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ST7590 Maximum ratings
Doc ID 18349 Rev 1 11/24
e 4.
ara
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Maximum ratings ST7590
12/24 Doc ID 18349 Rev 1
Referred to T
= -40°
This paramete
r does not include th
e tole
rance of externa
l components
Referred to I
sta
t up, up
loading code from ext
rnal NVM
and its execution fro
exte
rnal
RAM may require some second.
e 4.
ara
s (co
