PIC18F26Q84-I/SP - 8-bit MCU 64MHz 64KB Flash CAN FD | Microchip
料号： PIC18F26Q84-I/SP ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.1 | $3.10 |
| 10 | $2.78 | $27.80 |
| 100 | $2.45 | $245.00 |
| 500 | $2.18 | $1,090.00 |
| 1,000 | $1.95 | $1,950.00 |
PIC18F26Q84-I/SP 概述
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data bus CPU, on-chip program memory (Flash), data memory (RAM), and a configurable set of peripherals. MCUs sit inside the broader hierarchy of embedded computing devices: microcontroller -> embedded processor -> semiconductor IC. The PIC18 architecture is Microchip's high-end 8-bit family, offering enhanced instruction set, larger memory maps and richer peripherals than the PIC16 family, while remaining easier to program and debug than 32-bit ARM Cortex-M parts.
Key features of the PIC18F26Q84-I/SP include operation from 1.8 V to 5.5 V, 25 digital I/O pins, hardware CAN FD controller, multiple UART/SPI/I2C interfaces, 12-bit ADC with computation, configurable logic cells (CLC), Complementary Waveform Generator (CWG), and zero-cross detect. The 64 KB self-programmable Flash supports in-application programming, while the 1 KB EEPROM provides non-volatile data storage. The integrated 32 MHz high-speed oscillator and 64 MHz PLL deliver 16 MIPS performance at 64 MHz.
The architecture combines a RISC-style Harvard CPU with CIP blocks such as CLC, PWM, signal measurement timers, and CWG that interconnect via a programmable fabric, allowing hardware-level state machines without CPU intervention. This reduces firmware complexity and improves timing determinism for motor control, power conversion, and sensor signal chains.
Typical applications include automotive body and sensor networks (CAN FD nodes), industrial sensor hubs, building automation, lighting controllers, smart agriculture nodes, and small appliance motor control. Wide voltage range (1.8 V to 5.5 V) and CAN FD make it especially suitable for distributed industrial networks.
Design consideration: ensure CAN bus termination (120 ohm at each end), TVS protection, and proper dominant/recessive recessive bit timing. The 28-SPDIP footprint eases prototype rework and breadboarding, but for volume production migrate to the SOIC or SSOP variants of the same die.
This page synthesizes distributor pricing, drop-in alternatives, design notes, and application guidance not found in the manufacturer datasheet alone, optimizing it for engineering decision-making and AI-cited knowledge retrieval.
直接替换替代料： PIC18F26Q84-I/SP ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC18F26Q84-I/SP （相同外形与封装尺寸） ——差异在于 Package, Operating Temperature, ADC, MSL Level, Mounting Type.
快速对比工具——选择替代料号进行并排对比：
PIC18F26Q84-I/SO
✅ 直接替换✓ 有现货
$2.65 / 个
查看数据手册 →PIC18F26Q84-E/SP
✅ 直接替换✓ 有现货
$1.95 / 个
查看数据手册 →PIC18F27Q84-I/SP
✅ 直接替换✓ 有现货
$2.2 / 个
查看数据手册 →PIC18F26Q84-E/SO
✅ 直接替换✓ 有现货
$1.7 / 个
查看数据手册 →PIC18F26Q10-I/SS
✅ 直接替换✓ 有现货
$0.92 / 个
查看数据手册 →PIC18F26Q43-I/SS
✅ 直接替换✓ 有现货
$1.38 / 个
查看数据手册 →PIC18F26Q84-I/SP 最大额定值与电气特性
| Product Family | PIC18-Q84 |
| Core Architecture | PIC 8-bit RISC |
| CPU Speed | 64 MHz (16 MIPS) |
| Program Memory (Flash) | 64 KB (64K x 8) |
| Data Memory (RAM) | 4 KB |
| EEPROM | 1 KB |
| 电源电压 | 1.8 V to 5.5 V |
| I/O Pins | 25 |
| 封装 | 28-SPDIP (SP) |
| 安装类型 | Through-Hole |
| CAN FD | Yes (1 module) |
| ADC | 12-bit ADC with Computation |
| 工作温度 | -40C to +85C (Industrial) |
| Temperature Grade | Industrial |
| RoHS 状态 | Compliant |
| Lead-Free | Yes |
PIC18F26Q84-I/SP 引脚配置
| 引脚 1 | RA0/AN0/C1IN0+/C2IN0+/DAC1OUT/CLCIN0/INT0 — GPIO RA0 / Analog Ch0 / DAC1 out / INT0 |
| 引脚 2 | RA1/AN1/C1IN1-/C2IN1-/DAC1REF+/CLCIN1 — GPIO RA1 / Analog Ch1 / DAC1 ref+ |
| 引脚 3 | RA2/AN2/C1IN2-/C2IN2-/DAC1REF-/CLCIN2 — GPIO RA2 / Analog Ch2 / DAC1 ref- |
| 引脚 4 | RA3/AN3/C1IN3-/C2IN3-/CLCIN3 — GPIO RA3 / Analog Ch3 |
| 引脚 5 | RA4/AN4/C1OUT/T0CKI/CLCIN4 — GPIO RA4 / Analog Ch4 / Timer0 clock |
| 引脚 6 | RA5/AN5/C2OUT1/T1CKI/CLCIN5 — GPIO RA5 / Analog Ch5 / Timer1 clock |
| 引脚 7 | RA6/AN6 — GPIO RA6 / Analog Ch6 |
| 引脚 8 | RA7/AN7 — GPIO RA7 / Analog Ch7 |
| 引脚 9 | VSS — Ground |
| 引脚 10 | VDD — Positive supply voltage |
| 引脚 11 | RB0/AN8/C2IN4+/SRI/INT1 — GPIO RB0 / Analog Ch8 / INT1 |
| 引脚 12 | RB1/AN9/C1IN4+/C2IN4-/INT2 — GPIO RB1 / Analog Ch9 / INT2 |
| 引脚 13 | RB2/AN10/C1IN3+/CANRX — GPIO RB2 / Analog Ch10 / CAN RX |
| 引脚 14 | RB3/AN11/C1IN2+/CANTX — GPIO RB3 / Analog Ch11 / CAN TX |
| 引脚 15 | RB4/AN12/C2IN3+/SDA1 — GPIO RB4 / Analog Ch12 / I2C1 SDA |
| 引脚 16 | RB5/AN13/C2IN2+/SCL1 — GPIO RB5 / Analog Ch13 / I2C1 SCL |
| 引脚 17 | RB6/ICSPCLK — GPIO RB6 / ICSP clock |
| 引脚 18 | RB7/ICSPDAT — GPIO RB7 / ICSP data |
| 引脚 19 | VSS — Ground |
| 引脚 20 | VDD — Positive supply voltage |
| 引脚 21 | RC0/SOSCO — GPIO RC0 / Secondary oscillator out |
| 引脚 22 | RC1/SOSCI — GPIO RC1 / Secondary oscillator in |
| 引脚 23 | RC2/AN14 — GPIO RC2 / Analog Ch14 |
| 引脚 24 | RC3/AN15/SCL2 — GPIO RC3 / Analog Ch15 / I2C2 SCL |
| 引脚 25 | RC4/AN16/SDA2 — GPIO RC4 / Analog Ch16 / I2C2 SDA |
| 引脚 26 | RC5/AN17 — GPIO RC5 / Analog Ch17 |
| 引脚 27 | RC6/AN18/TX1/CK1 — GPIO RC6 / UART1 TX |
| 引脚 28 | RC7/AN19/RX1/DT1 — GPIO RC7 / UART1 RX |
典型应用
PIC18F26Q84-I/SP 适用于 6 应用s: Automotive CAN FD Sensor Nodes, Industrial Sensor Hubs and PLC I/O Modules, Building Automation and HVAC Controllers, Smart Agriculture and Environmental Monitoring, Small Appliance Motor and Pump Control, Lighting Control and LED Drivers.
Automotive CAN FD Sensor Nodes
The PIC18F26Q84-I/SP's integrated CAN FD controller and industrial temperature grade make it a natural fit for automotive body and chassis sensor networks. In a CAN FD node the Q84 reads a sensor (temperature, pressure, or position) via its 12-bit ADC with computation, packages the data into a CAN FD frame (up to 64-byte payload), and transmits on the bus at up to 1 Mbps data phase. The wide 1.8-5.5 V supply enables direct connection to 12 V automotive rails after regulation. Hardware CIPs (CLC, CWG, timers) handle signal conditioning and PWM generation in parallel without CPU intervention, freeing the 16 MIPS core for application logic. For under-hood or harsh-environment nodes the E/SP variant is recommended. According to the Microchip PIC18-Q84 family brief, this architecture supports ISO 11898-1:2015 CAN FD compliance.
推荐
Industrial Sensor Hubs and PLC I/O Modules
The PIC18F26Q84-I/SP serves as a cost-effective I/O concentrator in industrial sensor hubs and PLC-style expansion modules. Its 25 digital I/O pins, multiple UART/SPI/I2C interfaces, and CAN FD uplink combine to aggregate field sensor data from Modbus RTU slaves, I2C sensors, or SPI ADCs and forward them upstream via CAN FD. The 1.8-5.5 V supply tolerance is compatible with both 3.3 V sensor rails and legacy 5 V PLC backplanes. Hardware CIPs like CLC and the signal measurement timer implement precise edge detection and pulse counting without CPU load. With 64 KB Flash it has ample headroom for application-layer protocol stacks like CANopen or DeviceNet. Reference the Microchip AN2781 application note for CIP-based industrial design patterns.
推荐
Building Automation and HVAC Controllers
In building automation systems, the PIC18F26Q84-I/SP can act as a local controller for HVAC dampers, valve actuators, and lighting nodes. Its CWG (Complementary Waveform Generator) directly produces complementary PWM signals for motor and dimmer control, while the CLC fabric implements custom logic glue (e.g., interlocks, debouncing) at the hardware level. The CAN FD interface allows these nodes to daisy-chain on an industrial building backbone without a separate gateway. The 64 MHz CPU (16 MIPS) easily runs control loops and Modbus/TCP-style protocols over UART. Power is typically 24 VAC-derived and regulated to 3.3 V or 5 V within the Q84 supply range. Reference Microchip TB3147 for HVAC CIP design patterns.
Smart Agriculture and Environmental Monitoring
Solar-powered remote agricultural monitoring stations benefit from the PIC18F26Q84-I/SP's wide 1.8-5.5 V supply and low-power sleep modes. The Q84 can wake periodically via the RTC, take soil moisture / temperature / CO2 sensor readings through its 12-bit ADC, and report over CAN FD, LoRa-attached UART, or NB-IoT modem. CIPs like the CLC can perform sensor fusion logic before the CPU even wakes, drastically reducing average current draw for multi-year battery life. With 64 KB Flash it accommodates OTA firmware update logic for remote fleet management. The 28-SPDIP package simplifies prototyping on weather-resistant perfboard. See Microchip AN2468 for low-power design guidance.
推荐
Small Appliance Motor and Pump Control
Small appliances such as washing machines, dishwashers, and pool pumps use the PIC18F26Q84-I/SP as the main control MCU. The CWG and PWM peripherals generate complementary drive signals for 3-phase BLDC or single-phase PSC motors, while the integrated op-amp-like CLC cells implement current-sense amplification. The 64 KB Flash is sufficient for sensorless FOC or trapezoidal commutation firmware. CAN FD connectivity enables diagnostic reporting to a master appliance controller or service tool. The 1.8-5.5 V supply range supports both 3.3 V sensor rails and 5 V gate-driver interfaces. Reference Microchip AN1078 for sensorless BLDC techniques applicable to this MCU.
推荐
Lighting Control and LED Drivers
Architectural and stage lighting controllers leverage the PIC18F26Q84-I/SP for DMX-compatible dimming and addressable LED string management. The 25 I/O pins can drive multiple LED strings via the CWG PWM outputs, while UART handles DMX512 reception. CAN FD enables daisy-chained lighting nodes on a building-wide network. The 16 MIPS core easily computes 16-bit-per-channel color mixing at high refresh rates. Wide 1.8-5.5 V supply supports battery-powered portable lighting and PoE-derived 5 V rails. See Microchip AN1079 for LED dimming firmware patterns and TB3060 for DMX over UART.
推荐
推荐产品汇总
工程参考数据： PIC18F26Q84-I/SP ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC18F26Q84-I/SO | PIC18F26Q84-E/SP | PIC18F27Q84-I/SP | PIC18F26Q84-E/SO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SPDIP (SP) | 28-SOIC (SMD) | 28-SPDIP - same | 28-SPDIP - same | 28-SOIC (SMD) |
| Flash Memory | 64 KB | 64 KB | 64 KB | 128 KB | 64 KB |
| RAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| EEPROM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| CPU Speed | 64 MHz (16 MIPS) | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| CAN FD | Yes | Yes | Yes | Yes | Yes |
| Temperature Grade | Industrial (-40C to +85C) | Industrial | Extended (-40C to +125C) | Industrial | Extended (-40C to +125C) |
| Supply Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
关键差异点
- CAN FD integrated （对比 PIC18F26Q43-I/SS)
- Through-hole 28-SPDIP for prototyping （对比 PIC18F26Q84-I/SO)
- 64 KB Flash vs 128 KB on Q27 （对比 PIC18F27Q84-I/SP)
设计说明
The PIC18F26Q84-I/SP operates from 1.8 V to 5.5 V; place a 100 nF decoupling capacitor within 5 mm of each VDD pin and a bulk 10 uF tantalum or ceramic on the supply rail. The MCU's two VDD pins (10 and 20) and two VSS pins (9 and 19) MUST both be connected. For CAN FD applications add a separate analog supply filter on AVDD if the design references internal voltage.
Do not skip the 4.7 kohm pull-up on the MCLR/RE3 pin if using external reset; floating MCLR can cause spurious resets. When using ICSP, ensure isolation resistors on RB6/RB7 (ICSPCLK/ICSPDAT) per Microchip AC244044 debug header guidance. Always configure unused pins as outputs low to minimize sleep current.
For CAN FD designs at >1 Mbps, use a twisted-pair bus with 120 ohm termination at each end. Reference Microchip AN228 for CAN FD bus layout; keep stub length below 1/10 of the bit width. Use MCP2551 or MCP2562FD transceivers; never connect the Q84 CAN pins directly to the bus.
Estimated: at 64 MHz and 5.5 V, the Q84 core draws about 15 mA active (~82 mW). At 25 C ambient in the 28-SPDIP package with theta_JA ~50 C/W, junction temperature rise is roughly 4 C - well within industrial limits. No heatsink required; provide minimum 100 sqmm copper pour on VDD plane for thermal spreading.
合规信息
RoHS compliant per Microchip product page. Industrial temperature grade (-40C to +85C). AEC-Q100 qualified variants available in PIC18F26Q84-E (Extended) form. Lead-free and halogen-free per Microchip material declaration.
