This document describes an 8-bit MCU called ST72324Bxx, which operates in a voltage range of 3.8 to 5.5V. It features 8 to 32 Kbyte Flash/ROM memory, a 10-bit ADC, 4 timers, SPI, SCI, and other functionalities.
This document is a comprehensive datasheet for the ST72324Bxx family of 8-bit microcontrollers (MCUs). The devices operate within a voltage range of 3.8 to 5.5 V and include 8 to 32 Kbytes of dual voltage High Density Flash (HDFlash) or ROM, along with up to 1 Kbyte of RAM. Key features include a 10-bit ADC, four timers, SPI and SCI communication interfaces, and various power-saving modes.
The datasheet details the device architecture, including the CPU registers, peripheral descriptions such as the watchdog timer and real-time clock, and the instruction set. It also provides extensive electrical characteristics, timing diagrams, and absolute maximum ratings for the available packages, including LQFP32, LQFP44, SDIP32, and SDIP42.
| Operating voltage range | 3.8 to 5.5 V |
|---|---|
| Flash/ROM memory | 8 to 32 Kbyte |
| RAM memory | 384 bytes to 1 Kbyte |
| ADC resolution | 10-bit |
| Timers | 4 |
| Communication interfaces | SPI, SCI |
| I/O ports | Up to 32 |
| Flash endurance | 1 kcycle at 55 °C |
| Data retention | 40 years at 85 °C |
| Interrupt vectors | 10 plus TRAP and RESET |
The device operates with a voltage range of 3.8 to 5.5 V.
The family offers 8, 16, or 32 Kbytes of Flash/ROM depending on the specific device variant.
Yes, HDFlash devices support in-circuit programming (ICP).