PIC18C858-I/PT - 8-bit 40MHz 32KB EPROM MCU w/ CAN | Microchip
MPN: PIC18C858-I/PT ✗ Akhir HidupPIC18C858-I/PT Ringkasan
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and programmable I/O peripherals. The PIC18C family uses Microchip's enhanced 8-bit RISC architecture with C-compiler-optimized instruction set, linear program memory addressing up to 32 Kbytes, and linear data memory addressing up to 4 Kbytes, making it suitable for embedded control applications that need deterministic real-time response.
Key features of the PIC18C858-I/PT include a 10-bit Analog-to-Digital Converter (ADC) with multiple input channels, an integrated CAN 2.0B module for automotive and industrial networking, USART, MSSP (SPI/I2C), and capture/compare/PWM peripherals. Its 40MHz clock delivers up to 10 MIPS of processing throughput, and the 68 I/O pins give designers ample headroom for keypad, LCD, sensor, and actuator interfaces.
Architecturally, the PIC18C858 uses Harvard bus architecture with separate program and data paths, an 8-bit data path, and a 16-bit instruction word. This separation allows simultaneous instruction fetch and data access, eliminating the von Neumann bottleneck. The integrated CAN peripheral provides hardware message filtering and acceptance masks, freeing the CPU from bit-stuffing tasks.
Typical applications include industrial automation controllers, automotive body and chassis ECUs, CAN-based sensor networks, building automation gateways, and embedded control systems that benefit from the integrated CAN bus. The wide operating voltage range and industrial temperature grade also support process-control installations and HVAC controllers.
When designing with this device, remember that the PIC18C858 is built on EPROM (erasable programmable read-only memory) technology and is one-time programmable (OTP) in production. The part is marked Not Recommended for new designs by Microchip, so consider flash-based successors like the PIC18F8525 for new development. Engineers should verify the ICSP programming interface and oscillator startup timing during bring-up.
Alternatif penggantian untuk PIC18C858-I/PT — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian PIC18C858-I/PT (sama faktor bentuk dan footprint) — berbeda di dalam Package, Operating Temperature, ADC, Core Architecture, Program Memory Type.
PIC18C658-I/PT
✅ Drop-InKontak untuk harga
Lihat Datasheet →PIC18F8525-I/PT
✅ Drop-InKontak untuk harga
Lihat Datasheet →PIC18C858T-I/PT
✅ Drop-InKontak untuk harga
Lihat Datasheet →PIC18C858-E/PT
✅ Drop-InKontak untuk harga
Lihat Datasheet →PIC18C801-I/PT
✅ Drop-InKontak untuk harga
Lihat Datasheet →PIC18C858-I/PT Rating Maksimal & Karakteristik Listrik
| Core Architecture | PIC 8-bit RISC |
| Core Clock Speed | 40 MHz (max) |
| Program Memory Type | EPROM (OTP) |
| Program Memory Size | 32 KB (16K x 16) |
| RAM Size | 1.5 KB |
| Data Memory Addressing | Up to 4 KB (linear) |
| I/O Pin Count | 68 |
| Tegangan Pemuat | 4.2 V to 5.5 V |
| Suhu Kerja | -40 C to +85 C (Industrial) |
| Paket | 80-pin TQFP (PT) |
| Tipe Mounting | Surface Mount |
| ADC | 10-bit |
| CAN Module | Integrated CAN 2.0B |
| Peripherals | USART, MSSP (SPI/I2C), CCP/PWM |
Konfigurasi Pin PIC18C858-I/PT
| Pin produk 1 | OSC1/CLKI — Oscillator input / external clock input |
| Pin produk 2 | OSC2/CLKO — Oscillator output |
| Pin produk 3 | MCLR/VPP — Master clear reset / programming voltage |
| Pin produk 4 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Pin produk 5 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Pin produk 6 | RA2/AN2/VREF- — PORTA bit 2 / analog input 2 / ADC VREF- |
| Pin produk 7 | RA3/AN3/VREF+ — PORTA bit 3 / analog input 3 / ADC VREF+ |
| Pin produk 8 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pin produk 9 | RA5/AN4 — PORTA bit 5 / analog input 4 |
| Pin produk 10 | VSS — Ground reference |
| Pin produk 11 | VDD — Positive supply (4.2V-5.5V) |
| Pin produk 12 | RB0/INT0 — PORTB bit 0 / external interrupt 0 |
| Pin produk 13 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| Pin produk 14 | RB2/INT2 — PORTB bit 2 / external interrupt 2 |
| Pin produk 15 | RB3/INT3 — PORTB bit 3 / external interrupt 3 |
| Pin produk 16 | RB4 — PORTB bit 4 |
| Pin produk 17 | RB5 — PORTB bit 5 |
| Pin produk 18 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pin produk 19 | RB7/PGD — PORTB bit 7 / ICSP data |
| Pin produk 20 | VSS — Ground reference |
| Pin produk 21 | VDD — Positive supply |
| Pin produk 22 | RC0/T1CKI — PORTC bit 0 / Timer1 clock input |
| Pin produk 23 | RC1/CCP2 — PORTC bit 1 / Capture/Compare/PWM 2 |
| Pin produk 24 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM 1 |
| Pin produk 25 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pin produk 26 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pin produk 27 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pin produk 28 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| Pin produk 29 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| Pin produk 30 | RD0/PSP0 — PORTD bit 0 / parallel slave port data 0 |
| Pin produk 31 | RD1/PSP1 — PORTD bit 1 / parallel slave port data 1 |
| Pin produk 32 | RD2/PSP2 — PORTD bit 2 / parallel slave port data 2 |
| Pin produk 33 | RD3/PSP3 — PORTD bit 3 / parallel slave port data 3 |
| Pin produk 34 | RD4/PSP4 — PORTD bit 4 / parallel slave port data 4 |
| Pin produk 35 | RD5/PSP5 — PORTD bit 5 / parallel slave port data 5 |
| Pin produk 36 | RD6/PSP6 — PORTD bit 6 / parallel slave port data 6 |
| Pin produk 37 | RD7/PSP7 — PORTD bit 7 / parallel slave port data 7 |
| Pin produk 38 | VSS — Ground reference |
| Pin produk 39 | VDD — Positive supply |
| Pin produk 40 | RE0/RD — PORTE bit 0 / parallel slave port read |
| Pin produk 41 | RE1/WR — PORTE bit 1 / parallel slave port write |
| Pin produk 42 | RE2/CS — PORTE bit 2 / parallel slave port chip select |
| Pin produk 43 | RF0 — PORTF bit 0 |
| Pin produk 44 | RF1 — PORTF bit 1 |
| Pin produk 45 | RF2 — PORTF bit 2 |
| Pin produk 46 | RF3 — PORTF bit 3 |
| Pin produk 47 | RF4 — PORTF bit 4 |
| Pin produk 48 | RF5 — PORTF bit 5 |
| Pin produk 49 | RF6 — PORTF bit 6 |
| Pin produk 50 | RF7 — PORTF bit 7 |
| Pin produk 51 | VSS — Ground reference |
| Pin produk 52 | VDD — Positive supply |
| Pin produk 53 | RG0 — PORTG bit 0 |
| Pin produk 54 | RG1 — PORTG bit 1 |
| Pin produk 55 | RG2 — PORTG bit 2 |
| Pin produk 56 | RG3 — PORTG bit 3 |
| Pin produk 57 | RG4 — PORTG bit 4 |
| Pin produk 58 | AVDD — Analog positive supply |
| Pin produk 59 | AVSS — Analog ground |
| Pin produk 60 | CANTX — CAN bus transmit output |
| Pin produk 61 | CANRX — CAN bus receive input |
| Pin produk 62 | VSS — Ground reference |
| Pin produk 63 | VDD — Positive supply |
| Pin produk 64 | RH0 — PORTH bit 0 (external memory bus) |
| Pin produk 65 | RH1 — PORTH bit 1 (external memory bus) |
| Pin produk 66 | RH2 — PORTH bit 2 (external memory bus) |
| Pin produk 67 | RH3 — PORTH bit 3 (external memory bus) |
| Pin produk 68 | RH4 — PORTH bit 4 (external memory bus) |
| Pin produk 69 | RH5 — PORTH bit 5 (external memory bus) |
| Pin produk 70 | RH6 — PORTH bit 6 (external memory bus) |
| Pin produk 71 | RH7 — PORTH bit 7 (external memory bus) |
| Pin produk 72 | VSS — Ground reference |
| Pin produk 73 | VDD — Positive supply |
| Pin produk 74 | RJ0 — PORTJ bit 0 (external memory bus) |
| Pin produk 75 | RJ1 — PORTJ bit 1 (external memory bus) |
| Pin produk 76 | RJ2 — PORTJ bit 2 (external memory bus) |
| Pin produk 77 | RJ3 — PORTJ bit 3 (external memory bus) |
| Pin produk 78 | RJ4 — PORTJ bit 4 (external memory bus) |
| Pin produk 79 | RJ5 — PORTJ bit 5 (external memory bus) |
| Pin produk 80 | RJ6 — PORTJ bit 6 (external memory bus) |
Aplikasi Umum
PIC18C858-I/PT cocok untuk 6 aplikasis: Industrial CAN Network Node, Automotive Body Control Module, Building Automation Gateway, Process Control Sensor Hub, HVAC Controller Board, Embedded CAN-to-Serial Bridge.
Industrial CAN Network Node
The PIC18C858-I/PT is purpose-built for industrial CAN network nodes thanks to its integrated CAN 2.0B module with hardware acceptance filtering. At 40MHz it delivers 10 MIPS, comfortably handling CAN 2.0B message processing at 1 Mbps alongside sensor sampling via the 10-bit ADC. The 68 I/O pins connect directly to digital sensors, opto-isolated inputs, and relay drivers typical of industrial control cabinets. Placed on a CAN bus backbone with a TJA1050 transceiver, it forms a slave node reading field sensors and broadcasting status frames. The 4.2-5.5V supply matches 5V industrial rails directly. Trade-off: EPROM requires pre-programmed parts - consider PIC18F8525 for field-updateable firmware.
Direkomendasikan
Automotive Body Control Module
Automotive body control modules benefit from the PIC18C858-I/PT's combination of 32KB EPROM, integrated CAN, and 68 I/O pins. Window, mirror, lighting, and door-lock actuators can be driven directly through high-current I/O ports while CAN connectivity links the BCM to the vehicle bus. The 10-bit ADC reads switch and sensor inputs for debounced control decisions. Operating from a regulated 5V rail with industrial temperature rating, it suits under-dash automotive environments. The CAN hardware filtering offloads message routing from the CPU, leaving cycles for body-control logic. Note: For safety-critical systems requiring ASIL compliance, pair with an external watchdog and consider newer PIC18F variants with functional safety documentation.
Direkomendasikan
Building Automation Gateway
Building automation gateways bridge HVAC, lighting, and security subsystems using the PIC18C858-I/PT's CAN module plus USART and MSSP peripherals. The 32KB EPROM stores gateway routing tables and protocol converters, while 1.5KB RAM handles message buffering. The 68 I/O pins drive status LEDs, keypads, and LCD displays common to building controllers. Running at 40MHz it converts between BACnet, Modbus, and CAN protocols in real time. The 5V supply matches typical building-automation backplane rails, and the -40C to +85C industrial range covers mechanical-room environments. Trade-off: EPROM programming requires a parallel programmer at production - the PIC18F8525-I/PT offers ICSP for in-the-field firmware updates.
Direkomendasikan
Process Control Sensor Hub
Process control sensor hubs use the PIC18C858-I/PT to aggregate multiple analog and digital sensors and broadcast readings over CAN. The 10-bit ADC multiplexes across multiple process variables (temperature, pressure, flow), while the integrated CAN module transmits standardized frames to a central PLC. The 68 I/O pins accommodate digital sensor arrays plus HMI keypad input. At 10 MIPS the MCU handles linearization math, calibration lookups, and CAN protocol stack simultaneously. The 4.2-5.5V supply operates from a 5V regulated industrial rail. The wide temperature range supports outdoor and factory-floor deployments. Compared to a discrete ADC + microcontroller solution, this integrated part reduces BOM count and PCB footprint.
Direkomendasikan
HVAC Controller Board
HVAC controller boards leverage the PIC18C858-I/PT for fan, compressor, and valve control loops. The CCP/PWM peripherals generate variable-speed drive signals for brushless DC fans, while the ADC reads temperature sensors from multiple zones. The integrated CAN bus links indoor units to the building management system. With 32KB of program memory, control loop firmware plus scheduling logic fits comfortably. The 1.5KB RAM handles setpoint storage and PID working variables. Operating from a 5V supply with industrial temperature grade, the MCU suits rooftop unit and air-handler installations. For new designs, migrate to PIC18F8525-I/PT to gain flash reprogrammability and field firmware updates.
Direkomendasikan
Embedded CAN-to-Serial Bridge
A CAN-to-serial bridge application uses the PIC18C858-I/PT to convert between CAN 2.0B frames and RS-232/RS-485 serial traffic for legacy equipment integration. The CAN peripheral handles incoming automotive or industrial frames, while the USART drives the serial port at programmable baud rates. The MSSP peripheral can additionally support SPI-to-CAN bridging. With 68 I/O pins, status LEDs and configuration switches fit alongside the comms interfaces. The 32KB EPROM holds the protocol-conversion state machine and configuration tables. Operating at 40MHz the bridge sustains full-duplex serial plus 1 Mbps CAN without frame drops. Trade-off: For high-throughput bridging with multi-message buffering, the larger RAM on PIC18F8525 is preferable.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk PIC18C858-I/PT — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | PIC18C658-I/PT | PIC18F8525-I/PT | PIC18C858T-I/PT | PIC18C858-E/PT | PIC18C801-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-80 (PT) | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same |
| Program Memory | 32 KB EPROM | 16 KB EPROM (-50%) | 32 KB Flash (same size, in-system programmable) | 32 KB EPROM (same) | 32 KB EPROM (same) | 0 KB (external memory only) |
| RAM Size | 1.5 KB | 1.5 KB (same) | 4 KB (+167%) | 1.5 KB (same) | 1.5 KB (same) | 1.5 KB (same) |
| Memory Type | EPROM (OTP) | EPROM (OTP) | Flash (in-system programmable) | EPROM (OTP) | EPROM (OTP) | External memory only |
| Core Clock Speed | 40 MHz | 40 MHz (same) | 40 MHz (same) | 40 MHz (same) | 40 MHz (same) | 40 MHz (same) |
| CAN Module | Yes (integrated CAN 2.0B) | Yes (integrated CAN 2.0B) | Yes (integrated CAN 2.0B) | Yes (integrated CAN 2.0B) | Yes (integrated CAN 2.0B) | No (external memory only) |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) |
Diferensiator Kunci
- Integrated CAN 2.0B peripheral with hardware filtering (vsPIC18C801-I/PT)
- 32 KB EPROM program memory (vsPIC18C658-I/PT)
- Flash-based successor path with same peripherals (vsPIC18F8525-I/PT)
Catatan Desain
The PIC18C858-I/PT operates from a single 4.2V to 5.5V supply. Place a 100nF decoupling capacitor close to each VDD pin (multiple VDD pins on the TQFP-80 package) and a bulk 10uF tantalum or ceramic capacitor on the board supply rail. Use separate analog (AVDD) and digital (VDD) supplies tied together at a single point near the IC if the ADC is in use, with a ferrite bead to reduce digital switching noise coupling into analog measurements.
The PIC18C858 uses EPROM (OTP) memory, so firmware must be fully validated before production programming. Unlike flash-based PIC18F variants, there is no in-circuit reprogramming option. Engineers should prototype on a flash-based equivalent (e.g., PIC18F8525-I/PT) to avoid scrapping EPROM parts during firmware iteration. The part is also marked NRND (Not Recommended for new designs) by Microchip - verify the end product's lifecycle support window before committing to this part in long-life designs.
Route the CANRX and CANTX pins to the CAN transceiver (e.g., TJA1050) using a matched-impedance differential pair, keeping the traces short and away from switching nodes. Place the oscillator crystal as close to OSC1/OSC2 as possible with ground guard traces. The 80-pin TQFP package has a thermal pad - solder it to a ground copper pour for improved thermal dissipation, especially at 40MHz operation. Avoid running noisy digital signals parallel to analog inputs to minimize ADC crosstalk.
Informasi Konformitas
RoHS, REACH, and lead-free status not explicitly provided in the verified web data. PIC18C858 is an older EPROM-based MCU (introduced ~1999), predating many modern compliance certifications. Marked NRND (Not Recommended for new designs) by Microchip as of 2026-09-26.
