SUPER INTEGRATED DEVICES WITH DSP, AFE & MEMORIES FOR TELEPHONY, MODEM, FAX OVER INTERNET & POTS LINES The ST75C540 is a microcontroller manufactured by STMicroelectronics (STM). Below are the factual specifications, descriptions, and features based on available knowledge:
### **Specifications:**
- **Architecture:** 8-bit microcontroller
- **Core:** 80C51-compatible
- **Clock Speed:** Up to 16 MHz
- **Program Memory (ROM):** 16 KB (mask ROM)
- **RAM:** 512 bytes
- **EEPROM:** None (external EEPROM may be required)
- **I/O Ports:** 32 programmable I/O lines
- **Timers/Counters:** 3 (16-bit)
- **Serial Communication:** UART (full-duplex)
- **Interrupts:** 6 interrupt sources with 2 priority levels
- **Operating Voltage:** 4.5V to 5.5V
- **Power Consumption:** Low-power modes available (Idle and Power-down)
- **Package Options:** PDIP40, PLCC44
### **Descriptions:**
The ST75C540 is an enhanced 80C51-compatible microcontroller with integrated peripherals for embedded applications. It features a high-performance 8-bit core with extended memory and improved power management. The microcontroller is designed for industrial control, automotive, and consumer electronics applications requiring reliable 80C51 compatibility.
### **Features:**
- **80C51 Core:** Fully compatible with the industry-standard 80C51 instruction set.
- **Extended Memory:** 16 KB ROM and 512 bytes RAM for program and data storage.
- **High-Speed Operation:** Up to 16 MHz clock frequency.
- **Multiple Timers:** Three 16-bit timers for precise timing control.
- **Serial Communication:** Built-in UART for serial data transfer.
- **Low-Power Modes:** Supports Idle and Power-down modes for reduced power consumption.
- **Robust I/O:** 32 configurable I/O pins for interfacing with external devices.
- **Wide Voltage Range:** Operates from 4.5V to 5.5V, suitable for 5V systems.
This information is based on STMicroelectronics' documentation for the ST75C540 microcontroller. For detailed datasheets, refer to official STM sources.
