PIC18F8585-I/PT - 8-bit 40MHz 48KB Flash MCU 80-TQFP | Microchip
MPN: PIC18F8585-I/PT ✗ Cuối đờiPIC18F8585-I/PT Tóm tắt
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (flash/ROM), data memory (RAM), and integrated peripherals such as timers, ADC, communication controllers, and I/O. The PIC18F series is Microchip's enhanced 8-bit architecture, offering up to 16-bit wide instruction execution, hardware multiplier, C-friendly architecture, and rich peripheral integration. Positioned in the product hierarchy, this part sits as: PIC18F8585 -> PIC18F family -> PIC18 series -> 8-bit MCU -> microcontroller -> embedded IC. The integrated ECAN module places it above basic 8-bit MCUs that require an external CAN controller, reducing BOM cost and PCB area in networked embedded systems.
Key features include 48 KB (24K x 16) of flash program memory, 3328 bytes of data RAM, up to 70 I/O pins depending on package variant, hardware ECAN module supporting CAN 2.0B, multiple USART, MSSP (SPI/I2C), 10-bit ADC, capture/compare/PWM modules, and nanoWatt power management with multiple low-power modes. The 80-pin TQFP package exposes a wide pinout suitable for graphical displays, keypads, and parallel buses. Industrial-grade -I variant supports -40C to +85C operation, suitable for non-automotive harsh environments.
The PIC18F8585 uses Microchip's enhanced Harvard architecture with separate program and data buses, allowing simultaneous fetch and read/write in a single instruction cycle. The 8-bit datapath with 16-bit instruction word delivers compact code density while keeping firmware portable across the PIC18 family. Integrated ECAN with maskable filters reduces host-CPU load in CAN networks, and the 10-bit ADC with up to 12 channels supports sensor interfacing without an external ADC.
Typical applications include industrial CAN-node controllers, HVAC control panels, building automation gateways, instrumentation front panels, and embedded operator-interface modules. In each of these, the combination of large flash, rich I/O, ECAN, and a stable 8-bit toolchain makes the PIC18F8585 a balanced choice where 32-bit MCUs are overkill but bare 8-bit MCUs lack CAN or memory.
Designers should evaluate whether the PIC18F8585 family status of Not Recommended for new designs (per Microchip product page) fits the project lifecycle. For new designs, Microchip typically directs users to the PIC18F K-series or similar modern parts; the PIC18F8585 remains useful for maintenance, repair, and legacy designs with established firmware.
This page synthesizes distributor pricing, parametric comparison, and design notes not found in a single manufacturer datasheet, providing engineering context for sourcing, replacement, and lifecycle decisions.
Bộ thay thế dễ dàng lắp đặt cho PIC18F8585-I/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC18F8585-I/PT (cùng hình factor và footprint) — khác nhau ở Package, Core Architecture, ADC, Operating Temperature, Timers.
PIC18F8585-E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F6680-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F8680-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F6585-E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F8490-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F67K90-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F8585-I/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC18 (8-bit enhanced Harvard) |
| Program Memory (Flash) | 48 KB (24K x 16 words) |
| Data RAM | 3328 bytes |
| Maximum CPU Speed | 40 MHz (10 MIPS) |
| Operating Voltage | 4.2 V to 5.5 V |
| I/O Pins | 70 (max, package dependent) |
| Hộp | 80-pin TQFP (PT), 12x12 mm, 1 mm height |
| Nhiệt độ hoạt động | -40C to +85C (industrial, -I suffix) |
| ECAN Module | Yes (CAN 2.0B compatible) |
| ADC | 10-bit, multi-channel |
| Communication Peripherals | ECAN, USART (x2), MSSP (SPI/I2C) |
| Timers | Multiple 8-bit and 16-bit timers with CCP/ECCP |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (per JEDEC J-STD-020, typical for TQFP) |
| Trạng thái RoHS | Compliant |
| Bề rộng đường dữ liệu | 8-bit |
| ROM Type | Flash |
| Life Cycle Stage | Not Recommended for new designs (NRND) |
Cấu hình chân PIC18F8585-I/PT
| Chân 1 | OSC1/CLKI/RA7 — Oscillator input / general I/O |
| Chân 2 | OSC2/CLKO/RA6 — Oscillator output / general I/O |
| Chân 3 | MCLR/Vpp/RE3 — Master clear / programming voltage / general I/O |
| Chân 4 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Chân 5 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Chân 6 | RA2/AN2/Vref- — PORTA bit 2 / analog input 2 / ADC Vref- |
| Chân 7 | RA3/AN3/Vref+ — PORTA bit 3 / analog input 3 / ADC Vref+ |
| Chân 8 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Chân 9 | RA5/AN4 — PORTA bit 5 / analog input 4 |
| Chân 10 | Vss — Ground |
| Chân 11 | VDD — Positive supply |
| Chân 12 | RB0/INT0 — PORTB bit 0 / external interrupt 0 |
| Chân 13 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| Chân 14 | RB2/INT2 — PORTB bit 2 / external interrupt 2 |
| Chân 15 | RB3/INT3 — PORTB bit 3 / external interrupt 3 |
| Chân 16 | RB4 — PORTB bit 4 |
| Chân 17 | RB5 — PORTB bit 5 |
| Chân 18 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Chân 19 | RB7/PGD — PORTB bit 7 / ICSP data |
| Chân 20 | Vss — Ground |
| Chân 21 | VDD — Positive supply |
| Chân 22 | RC0/T1OSO — PORTC bit 0 / Timer1 oscillator output |
| Chân 23 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Chân 24 | RC2/CCP1 — PORTC bit 2 / CCP1 |
| Chân 25 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Chân 26 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Chân 27 | RC5/SDO — PORTC bit 5 / SPI data out |
| Chân 28 | RC6/TX1/CK1 — PORTC bit 6 / USART1 TX / clock |
| Chân 29 | RC7/RX1/DT1 — PORTC bit 7 / USART1 RX / data |
| Chân 30 | Vss — Ground |
| Chân 31 | VDD — Positive supply |
| Chân 32 | RD0/PSP0 — PORTD bit 0 / parallel slave port data 0 |
| Chân 33 | RD1/PSP1 — PORTD bit 1 / parallel slave port data 1 |
| Chân 34 | RD2/PSP2 — PORTD bit 2 / parallel slave port data 2 |
| Chân 35 | RD3/PSP3 — PORTD bit 3 / parallel slave port data 3 |
| Chân 36 | RD4/PSP4 — PORTD bit 4 / parallel slave port data 4 |
| Chân 37 | RD5/PSP5 — PORTD bit 5 / parallel slave port data 5 |
| Chân 38 | RD6/PSP6 — PORTD bit 6 / parallel slave port data 6 |
| Chân 39 | RD7/PSP7 — PORTD bit 7 / parallel slave port data 7 |
| Chân 40 | Vss — Ground |
| Chân 41 | VDD — Positive supply |
| Chân 42 | RE0/RD — PORTE bit 0 / parallel slave port read |
| Chân 43 | RE1/WR — PORTE bit 1 / parallel slave port write |
| Chân 44 | RE2/CS — PORTE bit 2 / parallel slave port chip select |
| Chân 45 | RF0 — PORTF bit 0 |
| Chân 46 | RF1 — PORTF bit 1 |
| Chân 47 | RF2 — PORTF bit 2 |
| Chân 48 | RF3 — PORTF bit 3 |
| Chân 49 | RF4 — PORTF bit 4 |
| Chân 50 | RF5 — PORTF bit 5 |
| Chân 51 | RF6 — PORTF bit 6 |
| Chân 52 | RF7 — PORTF bit 7 |
| Chân 53 | Vss — Ground |
| Chân 54 | VDD — Positive supply |
| Chân 55 | RG0 — PORTG bit 0 |
| Chân 56 | RG1 — PORTG bit 1 |
| Chân 57 | RG2 — PORTG bit 2 |
| Chân 58 | RG3 — PORTG bit 3 |
| Chân 59 | RG4 — PORTG bit 4 |
| Chân 60 | C1OUT/RG5 — Comparator 1 output / PORTG bit 5 |
| Chân 61 | C2OUT/RG6 — Comparator 2 output / PORTG bit 6 |
| Chân 62 | C3OUT/RG7 — Comparator 3 output / PORTG bit 7 |
| Chân 63 | CANRX/RC7 — ECAN RX input (alternate function on RC7) |
| Chân 64 | CANTX/RC6 — ECAN TX output (alternate function on RC6) |
| Chân 65 | Vss — Ground |
| Chân 66 | VDD — Positive supply |
| Chân 67 | RH0 — PORTH bit 0 |
| Chân 68 | RH1 — PORTH bit 1 |
| Chân 69 | RH2 — PORTH bit 2 |
| Chân 70 | RH3 — PORTH bit 3 |
| Chân 71 | RH4 — PORTH bit 4 |
| Chân 72 | RH5 — PORTH bit 5 |
| Chân 73 | RH6 — PORTH bit 6 |
| Chân 74 | RH7 — PORTH bit 7 |
| Chân 75 | RJ0 — PORTJ bit 0 |
| Chân 76 | RJ1 — PORTJ bit 1 |
| Chân 77 | RJ2 — PORTJ bit 2 |
| Chân 78 | RJ3 — PORTJ bit 3 |
| Chân 79 | RJ4 — PORTJ bit 4 |
| Chân 80 | RJ5 — PORTJ bit 5 |
Ứng dụng tiêu biểu
PIC18F8585-I/PT phù hợp cho 6 Áp dụngs: Industrial CAN-Node Controller, HVAC Control Panels and Building Automation Gateways, Instrumentation Front Panels, Embedded Operator-Interface Modules, Automotive Auxiliary Body and Comfort Modules (non-safety), Renewable Energy Monitoring and Logging.
Industrial CAN-Node Controller
The PIC18F8585-I/PT is well-suited for industrial CAN-node controllers thanks to its integrated ECAN (CAN 2.0B) module, 48 KB flash, and 3328-byte RAM. Designers typically configure the ECAN for 125 kbit/s to 1 Mbit/s operation depending on bus length, using the 40 MHz system clock to derive accurate CAN bit timing. The 80-pin TQFP exposes PORTA-PORTE for sensor multiplexing, while the dual USART supports an RS-485 or RS-232 debug port alongside CAN. Compared with a discrete CAN controller + MCU approach, the integrated ECAN removes a chip from the BOM and reduces PCB area, simplifying certification for industrial control panels.
Được đề xuất
HVAC Control Panels and Building Automation Gateways
Building-automation gateways benefit from the PIC18F8585-I/PT's ECAN module for inter-device communication, the dual USART for RS-485 trunk lines, and the MSSP for SPI-connected displays or sensors. The 48 KB flash supports Modbus, BACnet, or proprietary stack firmware, and 3328-byte RAM holds protocol buffers. With 70 I/O pins, designers can directly interface keypads, character LCDs, and relay drivers without external I/O expanders. The industrial -40C to +85C temperature range is well-matched to mechanical rooms and outdoor enclosures, where ambient temperatures routinely vary across seasons.
Được đề xuất
Instrumentation Front Panels
Front-panel controllers for bench instrumentation, lab equipment, and process meters are a natural fit for the PIC18F8585-I/PT. The 10-bit ADC handles sensor inputs (temperature, pressure, current), the ECCP modules generate PWM for setpoint or motor control, and the large flash accommodates menu-driven UI firmware. The 80-pin TQFP exposes enough I/O for an alphanumeric or graphical LCD, rotary encoder, and tactile keypad, while the dual USARTs can be split between a host interface and a debug port. The 40 MHz CPU keeps UI response snappy under interrupt load from ECAN or ADC conversions.
Được đề xuất
Embedded Operator-Interface Modules
Operator-interface modules with character or graphic LCDs, keypads, and CAN/Ethernet backhaul fit the PIC18F8585-I/PT profile. The 80-pin TQFP provides enough I/O to drive a parallel-character LCD directly, while the MSSP can connect to an SPI-based graphics controller or touchscreen. The 48 KB flash stores multilingual UI strings and configuration profiles, and 3328-byte RAM is enough for command buffers and protocol stacks. Industrial-grade temperature rating supports factory-floor deployment without additional thermal management.
Được đề xuất
Automotive Auxiliary Body and Comfort Modules (non-safety)
While the -I variant is industrial-grade (-40C to +85C), the PIC18F8585 family is also used in non-safety automotive body modules such as seat controllers, mirror adjusters, and interior lighting where full AEC-Q100 is not required. The integrated ECAN interfaces with the vehicle CAN bus, the 10-bit ADC reads switch and potentiometer inputs, and the PWM modules drive small motors or LED strings. Designers can later migrate to PIC18F K-series variants with AEC-Q100 qualification if higher automotive grade is needed, keeping firmware architecture compatible.
Được đề xuất
Renewable Energy Monitoring and Logging
Solar inverter monitoring, battery management telemetry, and wind-turbine condition monitoring benefit from the PIC18F8585-I/PT's mix of ADC channels, ECAN bus connectivity, and ample flash for logging and Modbus firmware. The wide 4.2-5.5 V supply range accepts 5 V regulated rails common in renewable-energy systems, and the industrial temperature rating handles outdoor enclosure thermal swings. The ECAN module allows the monitor to participate in a controller-area network of inverters and battery modules without external CAN silicon, lowering per-node cost.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F8585-I/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC18F8585-E/PT | PIC18F6680-I/PT | PIC18F8680-I/PT | PIC18F6585-E/PT | PIC18F8490-I/PT | PIC18F67K90-I/PT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 80-pin TQFP (PT) 12x12 mm | 80-pin TQFP (PT) 12x12 mm - same | 80-pin TQFP (PT) 12x12 mm - same | 80-pin TQFP (PT) 12x12 mm - same | 80-pin TQFP (PT) 12x12 mm - same | 80-pin TQFP (PT) 12x12 mm - same | 80-pin TQFP (PT) 12x12 mm - same |
| Flash Memory | 48 KB (24K x 16) | 48 KB (24K x 16) | 80 KB (40K x 16) | 80 KB (40K x 16) | 24 KB (12K x 16) | 16 KB (8K x 16) | 64 KB (32K x 16) |
| Maximum Clock | 40 MHz | 25 MHz | 40 MHz | 40 MHz | 25 MHz | 40 MHz | 64 MHz |
| ECAN Module | Yes | Yes | Yes | Yes | Yes | No | No |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C |
Bảo phân biệt quan trọng
- Integrated ECAN module without external CAN controller (vsPIC18F67K90-I/PT)
- Drop-in 80 KB flash upgrade path within the same package (vsPIC18F6680-I/PT)
- Extended-temperature variant available in same package (vsPIC18F8585-E/PT)
Ghi chú thiết kế
Decouple each Vdd/Vss pair on the PIC18F8585-I/PT with a 100 nF ceramic capacitor placed within 5 mm of the IC pins, plus a bulk 10 uF tantalum or aluminum-polymer cap at the regulator output. The 80-pin TQFP has multiple Vdd pins (11, 21, 31, 41, 54, 66) that all require bypassing; skipping any pair can cause logic errors during ECAN transmission peaks. A ferrite bead in series with the digital supply helps isolate noise from analog AVdd if a separate analog regulator is used.
Do not assume the PIC18F8585-I/PT boots with internal RC - the device defaults to a configuration that depends on CONFIG bytes. If the firmware is missing or corrupted, the device may appear dead; recovery requires ICSP programming with PGC/PGD on RB6/RB7 and high voltage on MCLR. Always set the CONFIG bits for the oscillator mode, watchdog, brown-out, and low-voltage-programming disable before mass production. The ECAN module requires accurate clock configuration (40 MHz with the right PLL settings) to meet CAN bit-timing requirements; off-by-one errors yield bus errors.
Route the ECAN TX/RX traces as a differential pair to the MCP2551 or similar CAN transceiver, keeping them matched in length and away from switching nodes. The 80-pin TQFP ground paddle is not exposed on this package (unlike QFN variants), so use a ground pour on the top layer stitched with multiple vias to inner ground planes. Place the 4 MHz or 10 MHz crystal within 5 mm of OSC1/OSC2, with a grounded guard ring to reduce EMI coupling into the ECAN bus.
Estimated: at Vdd=5 V and 40 MHz with all peripherals active, the PIC18F8585-I/PT draws approximately 20-30 mA. With theta_JA around 50-60 C/W for the 80-pin TQFP (per Microchip packaging specs), the junction temperature rise is approximately 1.5-1.8 C/W above ambient for typical industrial deployments. This is well within the industrial -40C to +85C range, so no heatsink is needed, but care should be taken to keep the part away from heat-generating components on the board.
Thông tin tuân thủ
RoHS and lead-free per Microchip product page. AEC-Q100 not applicable for industrial-grade (-I) variant; choose -E or K-series for automotive.