Product Overview
The PIC16F57-I is a 28-pin, 8-bit Flash-based CMOS microcontroller from Microchip Technology, based on the Baseline PIC architecture with only 33 single-word instructions. Featuring 3KB (2K x 12 words) of Flash program memory and 72 bytes of RAM, this cost-effective MCU operates at up to 20 MHz with a 200 ns instruction cycle time. Housed in a 28-pin package with 20 I/O pins, it includes a single 8-bit Timer0 with prescaler, a Watchdog Timer with on-chip RC oscillator, and In-Circuit Serial Programming (ICSP) capability. With its minimal peripheral set and low-cost positioning, the PIC16F57 is ideal for simple control applications, cost-sensitive consumer products, industrial sensors, and appliance controls where basic I/O control and small program footprint are sufficient.
Key Specifications
| Core Architecture | 8-bit PIC (Baseline Core) |
| Program Memory | 3KB Flash (2K x 12 words) |
| RAM | 72 bytes |
| Data EEPROM | None |
| Maximum Speed | 20 MHz (5 MIPS) |
| Operating Voltage | 2.0V to 5.5V |
| I/O Pins | 20 |
| ADC | None |
| Comparators | None |
| Timers | 1 x 8-bit (TMR0) |
| PWM | None |
| Communication | None |
| Instruction Set | 33 single-word instructions |
| Stack Levels | 2 |
| Operating Temperature | -40°C to +85°C (Industrial) |
| Package | 28-pin PDIP / SOIC / SSOP |
Features
- Baseline PIC architecture with only 33 easy-to-learn instructions
- All single-cycle instructions except program branches (two cycles)
- 12-bit wide instruction word, 8-bit wide data path
- 2-level deep hardware stack
- Direct, indirect, and relative addressing modes
- 8-bit Timer0 with 8-bit programmable prescaler
- Watchdog Timer (WDT) with on-chip RC oscillator for reliable operation
- Power-on Reset (POR) and Device Reset Timer (DRT)
- In-Circuit Serial Programming (ICSP) via two pins
- Programmable code protection for program memory security
- Power-saving Sleep mode with low standby current (100 nA typical)
- Wide operating voltage range: 2.0V to 5.5V
- High current I/O pins for direct LED drive (25 mA sink/source)
Applications
- Simple industrial control and sensor interfaces
- Cost-sensitive consumer electronics