Specifications
PIC18F452-I/P is a high-performance 8-bit enhanced Flash RISC microcontroller from Microchip’s PIC18F product line. Suffix definitions:
- I = Industrial temperature grade
- P = 40-pin through-hole PDIP package for breadboard prototyping and through-hole PCB assembly
1. Core Architecture & Memory Resources
CPU Core
- Optimized RISC architecture with only 77 single-word instructions, fully backward source-code compatible with PIC12/PIC16 familiesMicrochip Technology
- Max operating clock: 40 MHz, delivering up to 10 MIPS instruction throughput
- Integrated single-cycle 8×8 hardware multiplier for fast mathematical computation
- Linear program memory addressing up to 32 KB; linear data addressing up to 1.5 KB RAM
- C-compiler friendly design with extended stack depth for complex embedded programs
Memory Allocation
- Program Flash: 32 KB (16K × 16-bit words), supports in-circuit self-programming
- Data SRAM: 1,536 bytes general-purpose volatile memory
- On-chip Data EEPROM: 256 bytes for non-volatile parameter storage
- Endurance: 10,000 Flash erase/write cycles; 100,000 EEPROM erase/write cycles
- Hardware code-protection lock bits to secure firmware intellectual property
2. Integrated Peripherals
Analog Modules
- 8-channel 10-bit successive approximation ADC with multi-sequence auto-conversion
- Programmable ADC sampling clock and voltage reference
- All analog input pins feature noise suppression for industrial sensor wiring
Control & Timing Peripherals
- Two independent CCP (Capture/Compare/PWM) modules for motor drive, LED dimming and waveform generation
- Four configurable timers (8-bit + 16-bit variants)
- Parallel Slave Port (PSP) for high-speed parallel data exchange with external MCU/FPGA
- Hardware watchdog timer (WDT) with dedicated internal RC oscillator
- Programmable power-on reset (POR) and brown-out detection (BOD) for power supply fault protection
Serial Communication Interfaces
- MSSP synchronous serial port, switchable between SPI (3-wire) and I²C master/slave modes
- Addressable AUSART (enhanced UART) with hardware framing error detection, RS232/RS485 compatible
- Support for LIN bus implementation via software layer
I/O & Power Features
- 34 multi-function digital general-purpose I/O pins with software-controlled internal pull-ups
- Operating supply voltage range: 4.2 V ~ 5.5 V, designed for 5V industrial control systems
- Multiple low-power operating modes: Idle, Sleep to cut static power consumption
- Built-in ICD debug interface for real-time in-circuit programming and troubleshooting
3. Electrical & Environmental Ratings
- Operating temperature range (Industrial Grade I): -40°C to +85°C
- Through-hole PDIP packaging does not require MSL moisture control for storage
- Fully RoHS lead-free compliant
- Standard tube packaging; surface-mount counterpart PIC18F452-I/PT (44-TQFP) available for mass SMT production
4. Package Specifications
- Package type: 40-pin PDIP through-hole package, 0.600 inch lead pitch
- Ideal for laboratory prototyping, training boards and low-volume through-hole control equipment
Typical Applications
- Industrial data acquisition and multi-channel analog monitoring modules
- Small DC motor, solenoid and low-power servo closed-loop control systems
- Factory automation sensor signal processing and distributed IO units
- Portable test & measurement instruments with ADC sampling and serial communication
- Household appliance main control boards (HVAC, water heaters, lighting systems)
- Educational embedded electronics training kits and prototype development platforms
- Power supply digital regulation and battery charging management circuits
- Environmental monitoring nodes for temperature, humidity and pressure sensors
- Consumer audio/video peripheral controller boards
LXB Semicon supplies original Microchip PIC18F452-I/P industrial through-hole 8-bit Flash microcontroller
