PIC18F4685-I/P 8-Bit Flash Microcontroller with ECAN and 96KB Flash DIP-40 (PIC18F4685-I/P DIP IC)

The PIC18F4685-I/P is a high-density, 8-bit Flash-based microcontroller from Microchip's advanced PIC18 family, specifically engineered for memory-intensive automotive and industrial applications. Housed in a standard 40-pin DIP package, it is a powerhouse in the 8-bit segment, offering a massive 96KB of Flash program memory and 3.3KB of RAM. It features integrated ECAN™ (Enhanced Controller Area Network) technology, providing a robust and flexible communication interface for vehicle and factory automation. With its high computational throughput of 10 MIPS at 40MHz, a hardware 8x8 multiplier, and nanoWatt power-managed modes, it provides the deterministic control and extensive code space required for sophisticated, networked embedded systems.

This IC is a premier choice for professionals and advanced hobbyists in India for building DIY heavy-duty vehicle diagnostic tools, complex industrial fieldbus gateways, and smart energy management systems. Its combination of large memory capacity and built-in CAN networking makes it an ideal upgrade for designs that have outgrown smaller microcontrollers like the PIC18F458 or PIC18F4580 in a standard 40-pin DIP footprint.

Key Features

• High-performance RISC CPU with 75 instructions (optimized for C)
• ECAN™ Technology: Integrated CAN 2.0B Active module with 1Mbps bit rate
• Hardware 8x8 Single-Cycle Multiplier for high-speed mathematical processing
• 96KB Flash program memory (48K words) for extensive firmware storage
• 1024 Bytes of high-endurance Data EEPROM (1,000,000 cycles)
• 11-channel 10-bit Analog-to-Digital Converter (ADC)
• nanoWatt Technology for eXtreme Low Power (XLP) management
• Master Synchronous Serial Port (MSSP) supporting SPI and I2C
• Enhanced USART (EUSART) with RS-485, RS-232, and LIN support
• 36 bidirectional I/O pins with high current source/sink (25mA)

Specifications

• IC Type = 8-Bit Flash Microcontroller with ECAN
• Program Memory = 96KB (49152 Words)
• Data RAM = 3328 Bytes (3.25KB)
• Data EEPROM = 1024 Bytes (1KB)
• ADC Resolution = 10-Bit (11 Channels)
• Maximum Speed = 40MHz (10 MIPS)
• I/O Pins = 36 (Ports A, B, C, D, and E)
• Supply Voltage = 4.2V to 5.5V
• Current Sink/Source = 25mA
• Package Type = PDIP-40
• Number of Pins = 40
• Mounting Type = Through-Hole
• Operating Temperature = -40 to 85 degrees Celsius

Interfaces

• PIN 1 (MCLR/VPP/RE3) = Master Clear / Programming Voltage
• PIN 2 to 7 (RA0 to RA5) = Port A / Analog Inputs / Vref
• PIN 8 to 10 (RE0 to RE2) = Port E / Analog Inputs / Parallel Control
• PIN 11, 32 (VDD) = Positive Supply Voltage (5V)
• PIN 12, 31 (VSS) = Ground (0V)
• PIN 13, 14 (OSC1, OSC2) = External Crystal/Oscillator Inputs
• PIN 15 to 18, 23 to 26 (RC0 to RC7) = Port C / Timers / CCP / USART / SPI / I2C
• PIN 19 to 22, 27 to 30 (RD0 to RD7) = 8-Bit Port D / Parallel Slave Port
• PIN 33 to 40 (RB0 to RB7) = 8-Bit Port B / Interrupts / CAN TX-RX / ICSP