Features

Hardware features

 ARM® Cortex® -M3 32-bit RISC core

 12 Kbytes of user RAM

 512 Kbytes of user Flash memory with OTP

area:

– 1 0-year data retention at 105 °C, or

17 years at 85 °C

– 500 000 Erase/Write cycles per page

– Page granularity of 128 Bytes

Description

The ST32GxxxA (see Table 1) is a serial access microcontroller designed for machine-to-machine (M2M) applications in the car environment that incorporates the most recent generation of ARM® processors for embedded systems. Its Cortex®-M3 32-bit RISC core operating at a 15-MHz frequency brings great performance and excellent code compacity to the application thanks to the Thumb®-2 instruction set.

The 512-Kbyte high-speed embedded Flash memory introduces more flexibility to the system. This Flash memory has an improved cycling capability compared to the ST32F512-M.

The ST32GxxxA also offers a serial communication interface fully compatible with the ISO/IEC 7816-3 standard (T=0, T=1).

Two general-purpose 16-bit timers are available.

A hardware Data Encryption Standard (DES) accelerator can be used to the user to optimize the application performance. A software library is provided for Advanced Encryption Standard (AES) implementation.

The ST32GxxxA operates in the –40 to +105 °C temperature range and 1.8 V, 3 V and 5 V supply voltage ranges. A comprehensive range of power-saving modes enables the design of efficient low-power applications.

– Block granularity: 1 Kbyte

– 128 bytes of OTP for user

– Page Erase time 4 ms

– Block Erase 1 Kbyte in 20 ms

– Programming performance up to

10 μs/byte

– Flash Erase / Write Protection software

programmable on 32 Kbyte sectors

 Asynchronous Receiver Transmitter

supporting ISO/IEC 7816-3 T=0 and T=1

protocols

 Two 16-bit timers with interrupt capability

 1.8 V, 3 V and 5 V supply voltage ranges

 External clock frequency from 1 up to 7.5 MHz

 High performance provided by:

– T ypical CPU clock frequency of 17.5 MHz

– External clock multiplier (2x, 3x, and 4x)

 Current consumption compatible with ETSI

specifications

 AECQ100 rev G automotive-grade compliance

 Power-saving Standby state

 Contact assignment compatible ISO 7816-2

 ESD protection greater than 4 kV (HBM)

 8-pin DFN (6 × 5 mm) ECOPACK® package

Security features

 Monitoring of environmental parameters

 Protection against faults

 ISO 3309 CRC calculation block

 True random number generator

 Unique serial number on each die

 Hardware data encryption standard (DES)

accelerator

Software features

 Flash memory loader

 Flash memory drivers

Development environment

 Software development and firmware

generation are supported by a comprehensive

set of development tools dedicated to software

design and validation:

– C compiler, simulator and emulator

Major applications

 eCalls

 Connected car

 Java Card™ applications