PIC12F629/675 8-Bit Flash Microcontrollers
Microchip’s PIC12 Microcontrollers (MCUs) were the world’s first 8-Pin microcontrollers. Originally launched as One Time Programmable (OTP) parts, this range of devices continues to expand as extra features and further improvements are added.
The PIC12F629/675 family of microcontrollers is based upon Microchip’s mid-range core with an 8 level deep hardware stack and 35 instructions. These MCUs provide up to 5 MIPS, 1.75 Kbytes program memory with data memory consisting of 64 bytes RAM and 128 bytes EEPROM. On board is a RC oscillator with ±1% accuracy.
Features
35 Instructions
8 Level Hardware Stack
4 MHz Internal Oscillator
6 I/O Pins
1 Comparator
4 Channel 10-bit Analogue to Digital Converter (ADC) – PIC12F675 only
One 8-bit Timer
One 16-bit Timer
In Circuit Serial Programming (ICSP)
Microchip PIC12F 8-bit PIC® Microcontrollers
Microchip’s PIC12F Microcontrollers (MCUs) were the world’s first 8-Pin microcontrollers. Originally launched as One Time Programmable (OTP) parts, this range of devices continues to expand as Microchip adds extra features, further improves specifications and continues to offer ever greater value. Key to the success of the PIC12F was the internal RC oscillator that allowed six I/O channels in an 8-pin package. Later versions of this RC oscillator are configurable between 31kHz and 32MHz.
Pin configuration:
PIC12F675 is an 8 pin device and many of the pins can perform multiple functions as shown in above PIC12F675 pin diagram. The description for each of these functions is given below.
Pin
Function
Description
1
VDD
Positive Power Supply
2
GP5/T1CKI/OSC1/CLKIN
GP5: General purpose I/O pin 5
T1CKI: Timer1 external clock input
OSC1:Oscillator pin 1
CLKI: External clock source input
3
GP4/ AN3/ T1G/OSC2/CLKOUT
GP4: General purpose I/O pin 4
AN3: Analog input 3
T1G: Timer1 gate
OSC2: Oscillator pin 2
CLKO: Clock source output
4
GP3/MCLR/VPP
GP3: General purpose I/O pin 3
MCLR: Master Clear Input or Reset pin
VPP: Programming voltage
5
GP2/AN2 /T0CKI/INT/COUT
GP2: General purpose I/O pin 2
AN2: Analog input2
T0CKI: Timer0 clock input
INT: External Interrupt
COUT: Comparator output
6
GP1/AN1/CIN-/VREF/ICSPCLK
GP1: General purpose I/O pin 1
AN1: Analog input1
CIN-: Comparator input
VREF: External Voltage reference
ICSPCLK: Serial Programming Clock
7
GP0/AN0/CIN+/ICSPDAT
GP: General purpose I/O pin
AN0: Analog input0
CIN+: Comparator input
ICSPDAT: Serial Programming Data I/O
8
VSS
Ground
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