PIC12C508A-04/P 8-Bit CMOS Microcontroller DIP-8 (PIC12C508A DIP IC) The PIC12C508A is a low-cost, high-performance 8-bit fully static CMOS microcontroller. It employs a RISC architecture with only 33 single-word/single-cycle instructions, making it exceptionally efficient for simple control tasks. This IC includes 512 words of OTP (One-Time Programmable) EPROM program memory and 25 bytes of RAM. It features an internal 4MHz RC oscillator, which saves board space by eliminating the need for an external crystal. The device is designed for low-power, high-speed applications where minimal pin count and small physical size are required.
This IC is primarily used in low-power remote transmitters, simple security systems, and appliance controllers. It is a classic component for electronics projects in India for building standalone logic controllers, power-on reset circuits, and learning mid-range PIC assembly programming on a minimalist 8-pin platform.
Key Features
- High-performance RISC CPU with 33 instructions
- Internal 4MHz RC oscillator with programmable calibration
- In-Circuit Serial Programming (ICSP) support
- Wide operating voltage range (2.5V to 5.5V)
- Low power consumption (under 2uA standby at 3V)
- 8-bit real-time clock/counter (TMR0) with 8-bit programmable prescaler
- Watchdog Timer (WDT) with independent on-chip RC oscillator
- Power-on Reset (POR) and Device Reset Timer (DRT)
- High current source/sink for direct LED drive (25mA)
Specifications
- IC Type = 8-Bit CMOS Microcontroller (OTP)
- Program Memory = 512 Words (768 Bytes)
- Data RAM = 25 Bytes
- Speed = 4MHz (Internal Oscillator)
- I/O Pins = 6 (5 I/O, 1 Input-only)
- Supply Voltage = 2.5V to 5.5V
- Current Sink/Source = 25mA
- Package Type = PDIP-8
- Number of Pins = 8
- Mounting Type = Through-Hole
- Operating Temperature = 0 to 70 degrees Celsius
Interfaces
- PIN 1 (VDD) = Positive Supply Voltage (5V)
- PIN 2 (GP5/OSC1/CLKIN) = General Purpose I/O / Oscillator Input
- PIN 3 (GP4/OSC2/CLKOUT) = General Purpose I/O / Oscillator Output
- PIN 4 (GP3/MCLR/VPP) = Input Only / Master Clear / Programming Voltage
- PIN 5 (GP2/T0CKI) = General Purpose I/O / Timer Clock Input
- PIN 6 (GP1/ICSPCLK) = General Purpose I/O / Programming Clock
- PIN 7 (GP0/ICSPDAT) = General Purpose I/O / Programming Data
- PIN 8 (VSS) = Ground (0V)
