This document describes the features and characteristics of three 8-bit automotive microcontrollers, ST72334xx-Auto, ST72314xx-Auto, and ST72124Jx-Auto, including single voltage Flash/ROM memory, ADC, 16-bit timers, SPI, SCI interfaces, etc.
This document is a technical datasheet for the ST72334xx-Auto, ST72314xx-Auto, and ST72124Jx-Auto family of 8-bit microcontrollers designed for automotive applications. The devices feature single-voltage Flash or ROM memory with readout protection and in-situ programming capabilities, along with 256 bytes of EEPROM (on specific models). Key peripherals include 16-bit timers, a configurable watchdog timer, an 8-bit ADC, and serial interfaces supporting SPI and SCI (LIN compatible).
| Program memory | 8 or 16 Kbyte |
|---|---|
| Data memory (EEPROM) | 256 bytes |
| RAM | 384 or 512 bytes |
| Operating supply voltage | 3.2V to 5.5 V |
| CPU Frequency | Up to 8 MHz |
| Operating temperature | -40°C to +85°C / -40°C to +125°C |
| I/O Ports | 44 or 32 |
| Timers | 4 |
| Analog-to-Digital Converter | 8-bit ADC with 8 input channels |
The devices support four power saving modes: Halt, Active Halt, Wait, and Slow.
Yes, the SCI asynchronous serial interface is LIN compatible.
The operating temperature range is -40°C to +85°C for Flash devices and -40°C to +125°C for ROM devices.