Overview of PIC16F628A Microcontroller
The PIC16F628A devices are 8-bit flash-based microcontrollers with advantages of low-cost, high-performance, CMOS, fullystatic.
All PIC® microcontrollers employ an advanced RISC architecture. The PIC16F628A have enhanced core features, an eight-level deep stack, and multiple internal and external interrupt sources. The separate instruction and data buses of the Harvard architecture allow a 14-bit wide instruction word with the separate 8-bit wide data.
Features and Capabilities
- Interrupt capability
- 8-level deep hardware stack
- Direct, Indirect and Relative Addressing modes
- 35 single-word instructions
- All instructions single cycle except branches
- Internal and external oscillator options
- Power-saving Sleep mode
- Programmable weak pull-ups on PORTB
- Multiplexed Master Clear/Input-pin
- Watchdog Timer with independent oscillator
- Low-voltage programming
- In-Circuit Serial Programming™ (via two pins)
- Programmable code protection
- Brown-out Reset
- Power-on Reset
- Power-up Timer and Oscillator Start-up Timer
- Industrial and extended temperature range
- High current sink/source for direct LED drive
- Low-power internal oscillator
- External Oscillator support for crystals and resonators
Analog comparator module with:
- Two analog comparators
- Programmable on-chip voltage reference (VREF) module
- Selectable internal or external reference
- Comparator outputs are externally accessible
Addressable Universal Synchronous/Asynchronous Receiver/Transmitter USART/SCI
High-Endurance Flash/EEPROM cell:
- 100,000 write Flash endurance
- 1,000,000 write EEPROM endurance
- 40 year data retention
Technical Parameters
| Technical Parameters | Values |
|---|---|
| Flash Memory (KB) | 3.5 KB |
| RAM (bytes) | 224 x 8 |
| EEPROM (bytes) | 128 x 8 |
| Operating Voltage | 2.0-5.5V |
| Operating Speed | 20 MHz |
| Capture/Compare module | 16-bit |
| PWM module | 10-bit |
| Temp. Range | -40 to +125℃ |
| Oscillator | 4 MHz and 48 kHz |
| Timer | 2 x 8-bit - 1 x 16-bit |
| Standby Current | 100 nA @ 2.0V, typical |
| Operating Current | 12 μA @ 32 kHz, 2.0V, typical 120 μA @ 1 MHz, 2.0V, typical |
| Watchdog Timer Current | 1 μA @ 2.0V, typical |
| Timer1 Oscillator Current | 1.2 μA @ 32 kHz, 2.0V, typical |
| I/O pins | 18 |
| Comparators count | 2 |
| Wake-up time (from Sleep) | 4 μs, 3.0V, typical |
| Dual-speed Internal Oscillator | Run-time selectable between 4 MHz and 48 kHz |
| Package Types | 18-Lead PDIP, 18-Lead SOIC |
Application
The PIC16F628A series fits in applications ranging from battery chargers to low power remote sensors. The small footprint packages makes this microcontroller series ideal for all applications with space limitations.
