PIC18F66J16T-I/PT - 8-bit 48MHz 96KB Flash MCU | Microchip
料号： PIC18F66J16T-I/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $9.85 | $9.85 |
| 10 | $8.92 | $89.20 |
| 100 | $7.64 | $764.00 |
| 500 | $6.55 | $3,275.00 |
| 1,000 | $5.82 | $5,820.00 |
PIC18F66J16T-I/PT 概述
What is a PIC18F microcontroller? The PIC18F is Microchip's high-performance 8-bit microcontroller family that combines a RISC architecture, hardware multiplier, nanoWatt power management, and rich peripheral integration. In the embedded system hierarchy, a PIC18F sits between simpler PIC16F parts and the 16-bit dsPIC/PIC24 families, occupying the mainstream 8-bit performance tier for industrial control, user interfaces, and connectivity gateway applications.
Key features of the PIC18F66J16 include 96 KB Flash with 10,000 endurance cycles and 20-year retention, 3,936 bytes of RAM, an internal 8 MHz oscillator, parallel master port (PMP), enhanced ICD with three hardware breakpoints, and nanoWatt technology for sleep-mode current minimization. The device operates from 2.0 V to 3.6 V with 5V-tolerant digital inputs on selected I/O pins, allowing direct interface to legacy 5V logic without level shifters. Pin count is 64 in a TQFP package with 51 available I/O lines.
Architecturally, the PIC18F66J16 uses a 16-bit instruction word with an 8-bit data path, a hardware multiply engine, and C-compiler-friendly memory layout that supports the MPLAB XC8 toolchain. The 48 MHz oscillator drives a 4-phase pipeline delivering 10 MIPS, while the nanoWatt feature set (multiple idle modes, ultra-low-power wake-up, internal oscillator tuning) enables battery-backed and energy-harvesting designs without sacrificing deterministic real-time response.
Typical applications include industrial control panels, USB and CAN bridge nodes, LCD graphic displays, sensor hubs, home appliances, and medical instrumentation. The wide operating voltage range and 5V-tolerant inputs also suit automotive body and HVAC subsystems where direct connection to 5V sensors is required.
When designing with this MCU, use the MPLAB X IDE and the PICkit or ICD programmer for firmware development. Decoupling must include at least one 100 nF ceramic capacitor per VDD/VSS pair, with a bulk 4.7-10 uF cap at the regulator output, and unused I/O should be configured as outputs low to minimize sleep current.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the standalone Microchip datasheet.
直接替换替代料： PIC18F66J16T-I/PT ——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： PIC18F66J16T-I/PT （相同外形与封装尺寸） ——差异在于 Package, I/O Pins, Operating Temperature, Program Memory (Flash), ADC.
快速对比工具——选择替代料号进行并排对比：
PIC18F66J15T-I/PT
✅ 直接替换✓ 有现货
$6.72 / 个
查看数据手册 →PIC18F66J15-I/PT
✅ 直接替换✓ 有现货
$4.2 / 个
查看数据手册 →PIC18F66J11T-I/PT
✅ 直接替换✓ 有现货
$4.61 / 个
查看数据手册 →PIC18F65J94-I/PT
✅ 直接替换✓ 有现货
$3.89 / 个
查看数据手册 →PIC18F65J11-I/PT
✅ 直接替换✓ 有现货
$4.35 / 个
查看数据手册 →PIC18F65K90T-I/MR
✅ 直接替换✓ 有现货
$1.95 / 个
查看数据手册 →PIC18F66J16T-I/PT 最大额定值与电气特性
| Core Architecture | PIC18 8-bit |
| Family | PIC18F87J11 Family (PIC18 J-series) |
| Program Memory (Flash) | 96 KB (48K x 16) |
| RAM | 3,936 bytes |
| Maximum CPU Speed | 48 MHz (10 MIPS) |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| I/O Pins | 51 (5V-tolerant digital inputs) |
| 封装 | 64-pin TQFP (PT) 10x10 mm |
| 安装类型 | Surface Mount |
| 工作温度 | -40 C to +85 C (Industrial, 'I' suffix) |
| Internal Oscillator | 8 MHz (factory calibrated) |
| Communication Interfaces | 2x I2C/SPI, 2x UART (EUSART) |
| Parallel Master Port (PMP) | Yes |
| Hardware Debug | Enhanced ICD with 3 HW breakpoints |
| Power-Saving Technology | nanoWatt (multiple idle/sleep modes) |
| Flash Endurance | 10,000 erase/write cycles, 20-year retention |
| RoHS 状态 | Compliant |
PIC18F66J16T-I/PT 引脚配置
| 引脚 1 | RP2/RG2 — Remappable peripheral / PORTG I/O |
| 引脚 2 | RP3/RG3 — Remappable peripheral / PORTG I/O |
| 引脚 3 | RP4/RG4 — Remappable peripheral / PORTG I/O |
| 引脚 4 | RP5/RG5 — Remappable peripheral / PORTG I/O |
| 引脚 5 | RP6/RG6 — Remappable peripheral / PORTG I/O |
| 引脚 6 | RP7/RG7 — Remappable peripheral / PORTG I/O |
| 引脚 7 | RC1 — PORTC I/O |
| 引脚 8 | RC2 — PORTC I/O |
| 引脚 9 | RC3 — PORTC I/O |
| 引脚 10 | RC4 — PORTC I/O |
| 引脚 11 | VDD — Positive supply (2.0-3.6 V) |
| 引脚 12 | VSS — Ground reference |
| 引脚 13 | RC5 — PORTC I/O |
| 引脚 14 | RC6 — PORTC I/O / TX1 |
| 引脚 15 | RC7 — PORTC I/O / RX1 |
| 引脚 16 | RD0 — PORTD I/O / PMP |
| 引脚 17 | RD1 — PORTD I/O / PMP |
| 引脚 18 | RD2 — PORTD I/O / PMP |
| 引脚 19 | RD3 — PORTD I/O / PMP |
| 引脚 20 | RD4 — PORTD I/O / PMP |
| 引脚 21 | RD5 — PORTD I/O / PMP |
| 引脚 22 | RD6 — PORTD I/O / PMP |
| 引脚 23 | RD7 — PORTD I/O / PMP |
| 引脚 24 | VSS — Ground reference |
| 引脚 25 | VDD — Positive supply (2.0-3.6 V) |
| 引脚 26 | RE0 — PORTE I/O / PMP |
| 引脚 27 | RE1 — PORTE I/O / PMP |
| 引脚 28 | RE2 — PORTE I/O / PMP |
| 引脚 29 | RE3 — PORTE I/O / PMP |
| 引脚 30 | RE4 — PORTE I/O / PMP |
| 引脚 31 | RE5 — PORTE I/O / PMP |
| 引脚 32 | RE6 — PORTE I/O / PMP |
| 引脚 33 | RE7 — PORTE I/O / PMP |
| 引脚 34 | RF0 — PORTF I/O / analog input |
| 引脚 35 | RF1 — PORTF I/O / analog input |
| 引脚 36 | RF2 — PORTF I/O / analog input |
| 引脚 37 | RF3 — PORTF I/O / analog input |
| 引脚 38 | RF4 — PORTF I/O / analog input |
| 引脚 39 | RF5 — PORTF I/O / analog input |
| 引脚 40 | RF6 — PORTF I/O / analog input |
| 引脚 41 | RF7 — PORTF I/O / analog input |
| 引脚 42 | AVDD — Analog positive supply |
| 引脚 43 | AVSS — Analog ground |
| 引脚 44 | RH0 — PORTH I/O |
| 引脚 45 | RH1 — PORTH I/O |
| 引脚 46 | RH2 — PORTH I/O |
| 引脚 47 | RH3 — PORTH I/O |
| 引脚 48 | RH4 — PORTH I/O |
| 引脚 49 | RH5 — PORTH I/O |
| 引脚 50 | RH6 — PORTH I/O |
| 引脚 51 | RH7 — PORTH I/O |
| 引脚 52 | RA0 — PORTA I/O / analog input |
| 引脚 53 | RA1 — PORTA I/O / analog input |
| 引脚 54 | RA2 — PORTA I/O / analog input |
| 引脚 55 | RA3 — PORTA I/O / analog input |
| 引脚 56 | RA4 — PORTA I/O |
| 引脚 57 | RA5 — PORTA I/O |
| 引脚 58 | VDD — Positive supply (2.0-3.6 V) |
| 引脚 59 | VSS — Ground reference |
| 引脚 60 | OSC1 — Crystal/oscillator input |
| 引脚 61 | OSC2 — Crystal/oscillator output |
| 引脚 62 | RB0 — PORTB I/O / programming |
| 引脚 63 | RB1 — PORTB I/O / programming |
| 引脚 64 | MCLR — Master clear reset (active low) |
典型应用
PIC18F66J16T-I/PT 适用于 7 应用s: Industrial Control Panel, USB / Serial Bridge Node, LCD Graphic Display Controller, Home Appliance Control, Sensor Hub / Data Aggregator, Medical Instrumentation Interface, Educational / Development Platform.
Industrial Control Panel
The PIC18F66J16T-I/PT suits industrial control panels thanks to its 48 MHz core delivering 10 MIPS, 51 general-purpose I/O lines with selected 5V-tolerant digital inputs for direct sensor interface, and the parallel master port (PMP) that drives character or graphic LCDs without external logic. The industrial -40 C to +85 C operating range handles factory floor temperatures, while dual I2C/SPI plus dual UART ports connect to motor drivers, ADC front-ends, and fieldbus transceivers in parallel. The nanoWatt feature set reduces standby power during panel sleep modes, and 96 KB of Flash accommodates state-machine logic plus bootloader plus diagnostic protocols on a single device.
推荐
USB / Serial Bridge Node
The PIC18F66J16T-I/PT functions as a USB-to-UART or USB-to-SPI bridge thanks to its two EUSART ports and two MSSP (I2C/SPI) peripherals, allowing simultaneous conversion between USB and two legacy serial channels. The 3,936 bytes of RAM buffer high-throughput packet traffic, while the 96 KB Flash hosts USB stack plus class firmware plus vendor commands without external memory. Operating at 3.3 V with 5V-tolerant digital inputs simplifies coexistence with 5V hosts, and the 48 MHz core handles full-speed USB polling with margin for protocol parsing.
推荐
LCD Graphic Display Controller
The PIC18F66J16T-I/PT's parallel master port (PMP) drives 8080/6800-style graphic LCDs directly, offloading pixel streaming from the CPU and freeing MIPS for GUI logic. With 48 MHz / 10 MIPS, the MCU can refresh small QVGA panels while still handling touch-screen sampling via I2C, push-button inputs, and serial command interfaces. The 96 KB Flash stores font tables, bitmap assets, and the GUI state machine, while 3,936 bytes RAM holds frame buffers for monochrome or low-color displays.
推荐
Home Appliance Control
White-goods and HVAC subsystems benefit from the PIC18F66J16T-I/PT's combination of 5V-tolerant digital inputs (for direct connection to 5V triac feedback networks), dual UART for diagnostic and main-board communication, and nanoWatt low-power modes for standby. The 48 MHz core runs real-time control loops for motor or valve actuation, while 96 KB of Flash supports application firmware plus optional RF protocol stacks for connected appliances. The -40 C to +85 C industrial range covers refrigerator, washing machine, and oven control environments.
推荐
Sensor Hub / Data Aggregator
Sensor hubs aggregating I2C environmental sensors, SPI IMUs, and UART GPS modules fit naturally on the PIC18F66J16T-I/PT's dual I2C/SPI and dual UART peripheral set. The 48 MHz CPU fuses multi-rate sensor streams while 3,936 bytes RAM holds intermediate sample buffers, and 96 KB Flash stores the fusion algorithm plus logging drivers. nanoWatt sleep modes cut quiescent current between sensor reads, extending battery life in remote or wireless sensor deployments; PMP can also drive a small status LCD or seven-segment display for local indication.
推荐
Medical Instrumentation Interface
The PIC18F66J16T-I/PT powers medical device front-ends such as handheld monitors, diagnostic peripherals, and lab instrument control boards. Its 5V-tolerant digital inputs interface to legacy analog front-ends, the PMP drives alphanumeric or small graphic displays for patient readouts, and dual UART streams data to host PCs or wireless modules. The industrial -40 C to +85 C temperature range supports clinical environment operation, while the enhanced ICD with three hardware breakpoints simplifies IEC 62304 / FDA firmware validation cycles. Note that medical safety-critical functions require additional qualification and redundancy beyond any single MCU's specifications.
推荐
Educational / Development Platform
The PIC18F66J16T-I/PT is widely adopted in university curricula and hobbyist development boards thanks to MPLAB X IDE support, PICkit programmer compatibility, and a robust free XC8 compiler. 96 KB Flash gives students headroom for full projects, 51 I/O pins expose enough peripherals for robotics, instrumentation, and IoT labs, and nanoWatt modes introduce low-power design concepts. Its 64-pin TQFP package also lends itself to breadboard-friendly breakout boards.
推荐
推荐产品汇总
工程参考数据： PIC18F66J16T-I/PT ——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 | PIC18F66J15T-I/PT | PIC18F66J15-I/PT | PIC18F66J11T-I/PT | PIC18F65J94-I/PT | PIC18F65J11-I/PT | PIC18F65K90T-I/MR |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (PT) 10x10 mm | TQFP-64 (PT) 10x10 mm - same | TQFP-64 (PT) 10x10 mm - same | TQFP-64 (PT) 10x10 mm - same | TQFP-64 (PT) 10x10 mm - same | TQFP-64 (PT) 10x10 mm - same | QFN-64 (MR) 10x10 mm - same footprint family |
| Core | PIC18 8-bit | PIC18 8-bit | PIC18 8-bit | PIC18 8-bit | PIC18 K-series 8-bit | ||
| Flash Memory | 96 KB | 48 KB (-50%) | 64 KB (-33%) | 32 KB (-67%) | 32 KB (-67%) | 32 KB (-67%) | |
| Max CPU Speed | 48 MHz / 10 MIPS | 48 MHz / 10 MIPS | 48 MHz / 10 MIPS | 64 MHz / 16 MIPS | |||
| Operating Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 1.8 V to 5.5 V | |||
| 5V-Tolerant Digital Inputs | Yes (selected pins) | Yes (selected pins) | Yes (selected pins) | Yes (wider VDD tolerance) | |||
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | |||
| Lifecycle Status | Active | Active | Active | Active |
关键差异点
- Highest Flash density in the 64-pin PIC18F87J11 TQFP family at this exact die （对比 PIC18F66J15T-I/PT)
- Selected 5V-tolerant digital inputs simplify 3V-to-5V bridging without level shifters （对比 PIC18F65K90T-I/MR)
- Parallel master port (PMP) drives character or graphic LCDs directly （对比 PIC18F66J11T-I/PT)
设计说明
Decoupling must include one 100 nF ceramic capacitor placed within 5 mm of every VDD/VSS pin pair, plus a bulk 4.7-10 uF tantalum or ceramic at the regulator output. Multiple VDD pins on the 64-pin TQFP (pin 11, 25, 58) each require their own high-frequency decoupling - sharing one cap across all VDD pins can introduce ground bounce and code-fetch glitches at 48 MHz. AVSS/AVDD (pins 42/43) need a separate 100 nF cap and a small ferrite bead if analog accuracy is required on PORTF inputs.
Route the 48 MHz crystal traces (OSC1/OSC2, pins 60/61) with short, symmetric lengths and guard them with a ground pour on both sides to minimize EMI coupling. The MCLR pin (pin 64) needs a 10 kohm pull-up to VDD plus a 100 nF cap to ground for noise immunity; do not leave MCLR floating. Place ICSP programming header pads (RB0/RB1/MCLR) on the board edge to allow field re-flashing via PICkit without disassembling the enclosure.
Do not exceed 3.6 V on any VDD pin - the PIC18F66J16 is a 3V-only part even though some inputs are 5V-tolerant. Confusing the J16 with the K90 (which spans 1.8-5.5 V) is a frequent PCB-rework cause. Also, leaving unused I/O pins floating can cause shoot-through current in nanoWatt sleep modes; configure all unused pins as outputs driving low (or inputs with internal pull-ups) before entering sleep. Finally, the 48 MHz Fosc requires the PLL configuration bits to be set correctly in CONFIG1L - omitting this leaves the core at the 8 MHz internal oscillator.
合规信息
RoHS compliant per Microchip product page. Industrial temperature grade -40C to +85C, not AEC-Q100 qualified (no automotive grade listed). Lead-free and halogen-free packaging per Microchip green-product declarations.
