PIC12F508 8-bit PIC Microcontroller
PIC12F508 is a low-cost, high-performance, 8-bit, fully-static, Flash-based CMOS Microcontroller unit that has 8 pins out of which 6 pins can be used as I/O pins. It has Power-on-Reset (POR) as well as the Device Reset Timer (DRT) that eliminates the need for external Reset circuitry. It has an internal oscillator with 4Mhz frequency and can be configured in Power saving oscillator mode.
PIC12F508 Pin Configuration
|
Pin Number |
Pin Name |
Description |
|
1 |
VDD |
Positive Pin of MCU (+5V) |
|
2 |
GP5/OSC1/CLKIN |
Bidirectional I/O Pin or Crystal Input or External clock source input |
|
3 |
GP4/OSC2 |
Bidirectional I/O Pin, or Crystal output. |
|
4 |
GP3/MCLR/VPP |
Input Pin or connected with a programmer, mostly with PicKit |
|
5 |
GP2/T0CKI |
Bidirectional I/O Pin, Clock Input to Timer 0. |
|
6 |
GP1/CSPCLK |
Bidirectional I/O Pin, or In-Circuit Programmer Clock Pin. |
|
7 |
GP0/ICSPDAT |
Bidirectional I/O Pin or In-Circuit Serial Programming Data Pin, used in Programmer. |
|
8 |
VSS |
Ground Pin of MCU |
Features and Specification of the PIC12F508 Microcontroller
|
PIC12F508 - Simplified Features and Specification |
|
|
CPU |
Baseline 8-bit |
|
Number of Pins |
8 |
|
Operating Voltage (V) |
2-5.5V |
|
Number of I/O pins |
6 |
|
ADC Module |
Nil |
|
Timer Module |
8-bit(1) |
|
Comparators |
Nil |
|
DAC Module |
Nil |
|
Communication Peripherals |
Nil |
|
External Oscillator |
Nil |
|
Internal Oscillator |
4 MHz |
|
Program Memory (KB) |
0.75KB |
|
CPU Speed (MIPS) |
1 MIPS |
|
RAM Bytes |
368 |
|
Data EEPROM |
25 Bytes |
Note: Complete technical details can be found in the PIC12F508 Datasheet linked at the bottom of this page.
Alternative Product of PIC12F508
Alternative products for PIC12F508 microcontroller are listed below-
- PIC12F629
- PIC12F683
- PIC16F505
- PIC12C508
- PIC16F676
- PIC16F72
- PIC16F873A
- PIC16F876A
- PIC16F886
- PIC16F252
Introduction to PIC12F508
PIC12F508 is a low-cost, high-performance, 8-bit, fully-static, Flash-based CMOS Microcontroller unit that has 8 pins out of which 6 pins can be used as I/O pins. It has Power-on-Reset (POR) as well as the Device Reset Timer (DRT) that eliminates the need for external Reset circuitry. It has an internal oscillator with 4Mhz frequency and can be configured in Power saving oscillator mode.
PIC12F508 also comes with code protection, a watchdog timer, a power-saving sleep mode that serves the power and reliability feature. Also, system cost can be greatly reduced by using this microcontroller unit.
It has a wide operating voltage range, from 2V to 5.5V. Thus, it can be used in 3.3V or 5.0V logic level operations. The below image is showing the detailed pin diagram of the PIC12F508.
Detailed Features of PIC12F508
|
PIC12F508 –Detailed Features |
|
|
CPU |
Baseline 8-Bit |
|
Architecture |
8 |
|
Program Memory Size (Kbytes) |
0.75 |
|
RAM (bytes) |
25 |
|
EEPROM/HEF |
0 |
|
Pin Count |
8 |
|
Max. CPU Speed (MHz) |
4 |
|
Peripheral Pin Select (PPS) |
No |
|
Internal Oscillator |
4-Mhz |
|
No. Of comparators |
0 |
|
No. Of Operational Amplifier |
0 |
|
No. Of ADC channels |
0 |
|
Max ADC Resolution (bits) |
- |
|
ADC with Computation |
0 |
|
Number of DAC Converter |
0 |
|
Max DAC resolution |
- |
|
Internal Voltage Reference |
No |
|
Zero Cross Detect |
No |
|
No. Of 8-bit timers |
1 |
|
No. Of 16-bit Timers |
0 |
|
Signal Measurement Timer |
0 |
|
Hardware Limit Timer |
0 |
|
No. Of PWM outputs |
0 |
|
Max PWM resolution |
- |
|
Angular Timer |
0 |
|
Math Accelerator |
No |
|
No. Of UART module |
0 |
|
No. Of SPI Module |
0 |
|
No. Of I2C module |
0 |
|
No. Of USB Module |
0 |
|
Windowed Watchdog Timer (WWDT) |
No |
|
CRC/Scan |
No |
|
Numerically Controlled Oscillator |
No |
|
Cap. Touch Channels |
0 |
|
Segment LCD |
0 |
|
Minimum Operating Temperature (*C) |
-40 |
|
Maximum Operating Temperature (*C) |
125 |
|
Minimum Operating Voltage (V) |
2 |
|
Maximum Operating Voltage (V) |
5.5 |
|
High Voltage Capable |
No |
Programming PIC Microcontroller
PIC microcontrollers can be programmed with different software that is available in the market. There are people who still use Assembly language to program PIC MCUs. The below details are for the most advanced and common software and compiler that has been developed by Microchip itself.
In order to program the PIC microcontroller, we will need an IDE (Integrated Development Environment), where the programming takes place. A compiler, where our program gets converted into MCU readable form called HEX files. An IPE (Integrated Programming Environment), which is used to dump our hex file into our PIC MCUs.
IDE: MPLABX v3.35
IPE: MPLAB IPE v3.35
Compiler: XC8
Microchip has given all these three software for free. They can be downloaded directly from their official page. I have also provided the link for your convenience. Once downloaded, install them on your computer. If you have any problem doing so, you can post them in the comment below.
To dump or upload our code into PIC, we will need a device called PICkit 3. The PICkit 3 programmer/debugger is a simple, low-cost in-circuit debugger that is controlled by a PC running MPLAB IDE (v8.20 or greater) software on a Windows platform. The PICkit 3 programmer/debugger is an integral part of the development engineer's tool suite. A basic Programming circuit for PIC12F508 is shown below.
In addition to this, we will also need other hardware like a Perf board or breadboard, Soldering station, PIC ICs, Crystal oscillators, capacitors, etc.
Components associated with PIC
PICkit3, PIC Development Board, Crystal Oscillators, Capacitors, 12V Adapter, 7805 Voltage Regulator.
Application of PIC12F508
This is a basic baseline 8-bit microcontroller unit that can be used in the following applications-
- Input-Output operations
- Generic control Applications
- Small scale, low cost embedded application based production
2D Model
The dimensions of the PIC12F508 are shown below-
