PIC18C658T-E/L - 40MHz 8-Bit MCU w/ CAN, 32KB OTP | Microchip
MPN: PIC18C658T-E/L ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $11.2 | $11.20 |
| 10 | $10.05 | $100.50 |
| 100 | $8.95 | $895.00 |
| 500 | $7.85 | $3,925.00 |
| 1,000 | $6.75 | $6,750.00 |
PIC18C658T-E/L Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripheral interfaces into one package. PIC microcontrollers from Microchip use a C-compiler-optimized RISC architecture with Harvard memory structure and linear program/data addressing. The PIC18C family is the high-end 8-bit line, suited to applications that need more code space, more peripherals, and faster execution than the PIC16F/PIC17C families - acting as a bridge to the later PIC18F flash-based line.
Key specifications include 32KB (16K x 16) of OTP program memory, 4 Kbytes of data RAM, 40 MHz maximum clock, an on-chip CAN bus peripheral, multiple timers, ADC, USART and PWM peripherals. The automotive-grade "-E" temperature rating extends operation from -40C to +125C, while the "T" suffix denotes tape-and-reel packaging for high-volume assembly.
Architecturally, the PIC18C658 employs an enhanced instruction set with 16-bit instructions and 8-bit data, supporting linear addressing to 32 Kbytes of program memory and 4 Kbytes of data memory. This enables efficient C compilation and large table lookups. The integrated CAN module complies with the CAN 2.0B specification, making the part suitable for automotive and industrial networked embedded systems where deterministic multi-node communication is required.
Typical applications include automotive body and powertrain networked controllers, industrial CAN-bus nodes, building-automation gateways, embedded sensor hubs, and legacy industrial control replacements. The OTP memory makes it suited to mature, stable production designs where firmware does not require field updates, while the CAN peripheral simplifies hardware by eliminating an external standalone CAN controller.
When designing with this part, note that OTP (not flash) memory means firmware is committed at the time of programming and cannot be rewritten in-circuit. Ensure your firmware is fully validated before OTP programming. The 68-pin PLCC package is socket-friendly, which simplifies prototyping and field service for legacy equipment.
This page synthesizes the manufacturer's published OTP/CAN specifications, current distributor pricing, drop-in compatible alternatives, and practical design notes that the bare datasheet does not collect in one place, giving procurement and embedded engineers a single reference for the PIC18C658T-E/L.
Drop-in alternatives for PIC18C658T-E/L — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC18C658T-E/L (same form factor and footprint) — differing in Core, Operating Temperature, Package, Program Memory Size, Supply Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F458-I/L
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC18F458-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC18F458T-I/L
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC18F6680-I/L
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC18F4680-I/L
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC18C658T-E/L Maximum Ratings & Electrical Characteristics
| Product Family | PIC® 18C Series |
| Core | 8-bit PIC RISC |
| Program Memory Size | 32 KB (16K x 16) OTP |
| Data RAM | 4 Kbytes |
| Maximum Clock Frequency | 40 MHz |
| Supply Voltage | 4.2 V to 5.5 V |
| Operating Temperature | -40 C to +125 C (automotive "-E" grade) |
| Package | 68-PLCC (J-Lead, 24.23 x 24.23 mm) |
| Mounting Type | Surface Mount |
| Program Memory Type | OTP (One-Time Programmable) |
| Integrated CAN Module | Yes (CAN 2.0B compatible) |
| AEC-Q100 Automotive Grade | Yes (per "-E" suffix, automotive temperature grade) |
PIC18C658T-E/L Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, active low |
| Pin 2 | RA0/AN0 — PORTA I/O / analog input |
| Pin 3 | RA1/AN1 — PORTA I/O / analog input |
| Pin 4 | RA2/AN2 — PORTA I/O / analog input |
| Pin 5 | RA3/AN3/VREF+ — PORTA I/O / analog input / VREF+ |
| Pin 6 | RA4/T0CKI — PORTA I/O / Timer0 clock input |
| Pin 7 | RA5/AN4/SS — PORTA I/O / analog input / SPI slave select |
| Pin 8 | RE0/RD/AN5 — PORTE I/O / read signal / analog input |
| Pin 9 | RE1/WR/AN6 — PORTE I/O / write signal / analog input |
| Pin 10 | RE2/CS/AN7 — PORTE I/O / chip select / analog input |
| Pin 11 | VDD — Positive supply voltage |
| Pin 12 | VSS — Ground |
| Pin 13 | OSC1/CLKIN — Oscillator input / external clock |
| Pin 14 | OSC2/CLKOUT — Oscillator output |
| Pin 15 | RC0/T1OSO/T1CKI — PORTC I/O / Timer1 I/O |
| Pin 16 | RC1/T1OSI/CCP2 — PORTC I/O / Timer1 oscillator / CCP2 |
| Pin 17 | RC2/CCP1 — PORTC I/O / CCP1 |
| Pin 18 | RC3/SCK/SCL — PORTC I/O / SPI clock / I2C clock |
| Pin 19 | RC4/SDI/SDA — PORTC I/O / SPI data in / I2C data |
| Pin 20 | RC5/SDO — PORTC I/O / SPI data out |
| Pin 21 | RC6/TX/CK — PORTC I/O / USART TX / USART clock |
| Pin 22 | RC7/RX/DT — PORTC I/O / USART RX / USART data |
| Pin 23 | RD0/PSP0 — PORTD I/O / parallel slave port |
| Pin 24 | RD1/PSP1 — PORTD I/O / parallel slave port |
| Pin 25 | RD2/PSP2 — PORTD I/O / parallel slave port |
| Pin 26 | RD3/PSP3 — PORTD I/O / parallel slave port |
| Pin 27 | RD4/PSP4 — PORTD I/O / parallel slave port |
| Pin 28 | RD5/PSP5 — PORTD I/O / parallel slave port |
| Pin 29 | RD6/PSP6 — PORTD I/O / parallel slave port |
| Pin 30 | RD7/PSP7 — PORTD I/O / parallel slave port |
| Pin 31 | VSS — Ground |
| Pin 32 | VDD — Positive supply voltage |
| Pin 33 | RB0/INT0 — PORTB I/O / external interrupt 0 |
| Pin 34 | RB1/INT1 — PORTB I/O / external interrupt 1 |
| Pin 35 | RB2/INT2 — PORTB I/O / external interrupt 2 |
| Pin 36 | RB3/INT3 — PORTB I/O / external interrupt 3 |
| Pin 37 | RB4 — PORTB I/O |
| Pin 38 | RB5 — PORTB I/O |
| Pin 39 | RB6/PGC — PORTB I/O / ICSP clock |
| Pin 40 | RB7/PGD — PORTB I/O / ICSP data |
| Pin 41 | NC — Not connected |
| Pin 42 | NC — Not connected |
| Pin 43 | NC — Not connected |
| Pin 44 | NC — Not connected |
| Pin 45 | NC — Not connected |
| Pin 46 | NC — Not connected |
| Pin 47 | NC — Not connected |
| Pin 48 | NC — Not connected |
| Pin 49 | CANTX — CAN bus transmit output |
| Pin 50 | CANRX — CAN bus receive input |
| Pin 51 | NC — Not connected |
| Pin 52 | NC — Not connected |
| Pin 53 | NC — Not connected |
| Pin 54 | NC — Not connected |
| Pin 55 | NC — Not connected |
| Pin 56 | NC — Not connected |
| Pin 57 | NC — Not connected |
| Pin 58 | NC — Not connected |
| Pin 59 | NC — Not connected |
| Pin 60 | RF0 — PORTF I/O |
| Pin 61 | RF1 — PORTF I/O |
| Pin 62 | RF2 — PORTF I/O |
| Pin 63 | RF3 — PORTF I/O |
| Pin 64 | RF4 — PORTF I/O |
| Pin 65 | RF5 — PORTF I/O |
| Pin 66 | RF6 — PORTF I/O |
| Pin 67 | RF7 — PORTF I/O |
| Pin 68 | AVDD — Analog supply voltage |
Typical Applications
PIC18C658T-E/L is suitable for 6 applications: Automotive CAN-bus Body Control Module, Industrial CAN-bus Sensor Hub, Building Automation Gateway, Legacy Industrial Control Replacement, Embedded CAN Diagnostic Tool, Motor Control with CAN Feedback.
Automotive CAN-bus Body Control Module
The PIC18C658T-E/L's integrated CAN 2.0B controller and -40C to +125C automotive temperature grade make it a strong fit for body control modules. Body controllers manage door locks, lighting, mirror position and other discrete actuators over a 500 kbit/s CAN bus, and the 32 KB OTP program memory holds the full state-machine and diagnostic handler. Pair it with a high-side driver IC such as the Microchip HV509 or a TLE8110 driver and a CAN transceiver such as the TJA1050 for a complete automotive node. Estimated: at 40 MHz the PIC18C658T-E/L executes ~10 MIPS, comfortably handling a CAN frame every 2 ms plus periodic diagnostic sweeps.
Recommended
Industrial CAN-bus Sensor Hub
Industrial sensor hubs aggregate readings from multiple field sensors over CAN and forward them to a master PLC. The PIC18C658T-E/L's on-chip CAN peripheral eliminates the external controller, while its 4 Kbytes of data RAM buffers incoming CAN frames from up to 8 sensors at 125 kbit/s without dropping data. The 5 V supply range suits industrial 24 V bus systems regulated down to 5 V. Estimated: at 125 kbit/s, the device can service ~3000 CAN frames per second, which exceeds typical industrial sensor-hub throughput requirements.
Recommended
Building Automation Gateway
Building automation gateways bridge between HVAC controllers, lighting systems and a central BMS over CAN-bus. The PIC18C658T-E/L's linear 32 KB program memory supports BACnet-to-CAN or Modbus-to-CAN translation stacks in firmware, and the automotive-grade temperature range tolerates plant-room conditions. The 68-pin PLCC package is socket-friendly, allowing the gateway to be field-serviced without desoldering. Estimated: a translation gateway runs at <30% CPU utilization, leaving headroom for diagnostic logging and remote firmware polling via the USART.
Recommended
Legacy Industrial Control Replacement
The PIC18C658T-E/L is widely deployed in legacy industrial controllers, machine-tool HMIs and process-control PLCs originally designed in the early 2000s. Maintenance engineers need a drop-in compatible OTP part to repair existing equipment without redesigning the PCB. The 68-pin PLCC socketed footprint allows fast field replacement, and OTP memory matches the original design intent (firmware is committed, not field-updated). Estimated: a service replacement typically consumes <100 units per site per year, so legacy distributor stock is sufficient.
Recommended
Embedded CAN Diagnostic Tool
Hand-held or bench-top CAN diagnostic tools sniff bus traffic and log frames for protocol analysis. The PIC18C658T-E/L's CAN peripheral can operate in listen-only mode while the USART streams logged frames to a PC. The automotive temperature grade lets the tool operate in a garage or shop environment. Estimated: at 500 kbit/s CAN, the device can buffer ~1500 frames in 4 Kbytes of RAM before the USART must drain the buffer to a host PC, sufficient for most field diagnostic sessions.
Recommended
Motor Control with CAN Feedback
Brushless-DC and stepper motor controllers in industrial automation use CAN to receive torque/speed commands and return telemetry. The PIC18C658T-E/L's on-chip PWM timers and 40 MHz core allow a single device to drive a small BLDC motor while handling CAN communication, eliminating a separate motor controller. Estimated: a 4 kHz PWM update rate consumes <10% CPU, leaving the PIC18C658T-E/L free to service CAN frames every 10 ms.
Recommended
Recommended Products Summary
Engineering reference data for PIC18C658T-E/L — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F458-I/L | PIC18F458-I/PT | PIC18F458T-I/L | PIC18F6680-I/L | PIC18F4680-I/L |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 68-PLCC (J-Lead) | 68-PLCC (J-Lead) - same | TQFP-64 - different | 68-PLCC (J-Lead) - same | 68-PLCC (J-Lead) - same | 68-PLCC (J-Lead) - same |
| Core | 8-bit PIC18 RISC | 8-bit PIC18 RISC | 8-bit PIC18 RISC | 8-bit PIC18 RISC | 8-bit PIC18 RISC | 8-bit PIC18 RISC |
| Program Memory Type | 32 KB OTP | 32 KB Flash | 32 KB Flash | 32 KB Flash | 32 KB Flash | 32 KB Flash |
| Maximum Clock Frequency | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Data RAM | 4 KB | 1.5 KB | 1.5 KB | 1.5 KB | 3.25 KB | 3.25 KB |
| Integrated CAN | Yes (CAN 2.0B) | Yes (CAN 2.0B) | Yes (CAN 2.0B) | Yes (CAN 2.0B) | Yes (CAN 2.0B) | Yes (CAN 2.0B + ECAN) |
| Supply Voltage | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V |
| Lifecycle Status | Obsolete | Active | Active | Active | Active | Active |
| Approximate 1k Price (USD) | 6.75 | ~7.50 | ~6.95 | ~7.50 | ~9.50 | ~8.80 |
Key Differentiators
- Obsolete but still in demand for legacy automotive/industrial CAN nodes (vs PIC18F458-I/L)
- Integrated CAN 2.0B controller eliminates external MCP2515 (vs PIC16F877A-I/P)
- Automotive -40C to +125C temperature grade (vs PIC18C452-I/L)
Design Notes
The PIC18C658T-E/L uses OTP (one-time programmable) memory, not flash. Once the OTP cells are programmed, the firmware is permanent and cannot be rewritten in-circuit. Validate firmware on a PIC18F458 or windowed PIC18C658 prototype before committing to OTP production programming, because every programming attempt consumes a unit and a programming failure yields a bricked device.
Place a 100 nF ceramic decoupling capacitor as close as possible to every VDD pin (the PIC18C658T-E/L has multiple VDD/AVDD pins on a 68-pin PLCC). Add a 10 uF bulk capacitor near the IC. The CAN bus requires a 120 ohm termination resistor at each end of the bus segment; place the transceiver (such as MCP2551) within 25 mm of the CANTX/CANRX pins to minimize stub length and reflections.
The CAN bus is a differential signal that must be routed as a twisted pair or controlled-impedance differential pair (typically 120 ohms differential impedance). Keep the CAN pair away from switching regulator inductors and high-current traces, and place the ESD protection diode array (such as PESD1CAN) close to the bus connector. The PIC18C658T-E/L's CAN peripheral expects clean recessive/dominant transitions, so signal integrity is critical for reliable bus communication.
Estimated: the PIC18C658T-E/L dissipates approximately 50 mA x 5 V = 250 mW at full I/O load. With a 68-pin PLCC thermal resistance of approximately 45 C/W, this yields a 11 C junction rise above ambient - well within the -40C to +125C operating range. No heatsink is required, but ensure the PCB has at least 1 square inch of ground-plane copper for thermal spreading.
Compliance Information
RoHS/REACH/lead-free/halogen-free status were not present in the verified web data and require confirmation from the Microchip compliance documentation. AEC-Q100 is inferred from the automotive '-E' temperature grade suffix; the exact Q100 grade letter was not present in the verified web data.
