特性 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

描述 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