ST72774/ST72754/ST72734 8-bit USB MCU with up to 60K OTP, 1K RAM, ADC, TIMER, SYNC, TMU, PWM/BRM, H/W DDC & I2C
This document describes the ST72774, ST72754, and ST72734, which are HCMOS microcontroller units (MCUs) from the ST727x4 family. These devices feature a dedicated 8-bit core with enhanced instruction sets and specific peripherals optimized for monitor applications, including USB support and video synchronization processing.
Key features include up to 60K bytes of OTP/ROM memory, 1K byte of RAM, an integrated 3.3V voltage regulator, and hardware-implemented DDC (Display Data Channel) protocols. The microcontrollers operate with external clock frequencies of 12 or 24 MHz and support various power-saving modes such as WAIT mode.
| Program Memory (OTP/ROM) | Up to 60 Kbytes |
|---|---|
| Data RAM | Up to 1 Kbytes (256 bytes stack) |
| Operating Supply Voltage | 4.0V to 5.5V |
| Oscillator Frequency | 12 or 24 MHz |
| Operating Temperature Range | 0 to +70°C |
| Analog-to-Digital Converter Channels | 4 channels on port B |
They are designed specifically for monitor applications.
The processor runs with an external clock at 12 or 24 MHz.