PIC18F87K22-E/PT - 64MHz 128KB Flash 8-bit MCU | Microchip
料号： PIC18F87K22-E/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $11.22 | $11.22 |
| 10 | $10.45 | $104.50 |
| 100 | $9.18 | $918.00 |
| 500 | $8.42 | $4,210.00 |
| 1,000 | $7.65 | $7,650.00 |
PIC18F87K22-E/PT 概述
A microcontroller (microcontroller unit, MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (typically Flash), working RAM, and a rich set of peripherals including timers, communication controllers, and analog-to-digital converters. The PIC18F family sits inside the broader 8-bit microcontroller hierarchy of Microchip's product line and uses an enhanced RISC Harvard architecture. MCUs sit below microprocessors in system complexity but above bare digital ICs in functional density, and are the standard choice for embedded control.
Key features of the PIC18F87K22 include 128KB Flash (64K x 16 words), 4KB general-purpose RAM, a 12-bit A/D converter with up to 24 channels, multiple Enhanced USART, MSSP (I2C/SPI) modules, and the integrated CTMU peripheral. The device operates over a wide voltage window of 1.8V to 5.5V and supports industrial and extended temperature grades, making it usable across consumer, industrial, and automotive-style applications.
Architecture-wise, the PIC18F87K22 uses an enhanced Harvard core with a 16-bit instruction word and 8-bit data path. nanoWatt XLP technology delivers sleep currents in the nanoamp range and multiple power-managed operating modes (Run, Idle, Sleep). The CTMU provides a constant-current source and timer-based measurement that simplifies capacitive-touch and flow-measurement designs without an external analog front-end.
Typical applications for the PIC18F87K22-E/PT include low-power battery-powered sensing nodes, capacitive-touch user interfaces, industrial control panels with graphical or segment LCD interfaces, automotive body and climate modules, and IoT edge nodes requiring deterministic 8-bit control. Designers pick this part when they need a large Flash budget (128KB) and rich analog/digital peripherals in a single 80-pin TQFP.
For design, ensure the Vcap pin is decoupled with a low-ESR bulk capacitor, leave the ICSP/ICD pins accessible for in-circuit debugging with MPLAB ICD tools, and review the nanoWatt XLP modes (Sleep, Idle, Doze) when targeting nanoamp sleep currents. Watch the maximum source/sink current per I/O pin (typical 25 mA) and aggregate VDD/GND current limits when driving relays or LEDs.
This page synthesizes distributor pricing, drop-in alternatives from the same PIC18F K22 family, and practical design notes not found in the manufacturer datasheet. Engineers comparing microcontrollers for embedded designs should also review the PIC18F86K22, PIC18F85K22, and PIC18F67K22 as pin-compatible same-footprint variants in the same family.
直接替换替代料： PIC18F87K22-E/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： PIC18F87K22-E/PT （相同外形与封装尺寸） ——差异在于 Timers, ADC, Package, Operating Temperature, I/O Pins.
快速对比工具——选择替代料号进行并排对比：
PIC18F86K22-E/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F85K22-E/PT
✅ 直接替换✓ 有现货
$4.55 / 个
查看数据手册 →PIC18F87K22-I/PT
✅ 直接替换✓ 有现货
$5.27 / 个
查看数据手册 →PIC18F8722-I/PT
✅ 直接替换✓ 有现货
$6.5 / 个
查看数据手册 →PIC18F8720-E/PT
✅ 直接替换✓ 有现货
$9.3 / 个
查看数据手册 →PIC18F87K22-E/PT 最大额定值与电气特性
| Core | PIC18F (8-bit) Enhanced RISC |
| Program Memory | 128 KB Flash (64K x 16) |
| RAM | 4 KB |
| Maximum CPU Frequency | 64 MHz |
| Operating Voltage | 1.8 V to 5.5 V |
| ADC | 12-bit, up to 24 channels |
| Timers | Multiple 8-bit and 16-bit timers |
| Communication | Enhanced USART, MSSP (I2C/SPI) |
| Special Peripherals | CTMU, nanoWatt XLP, LCD driver |
| 封装 | 80-pin TQFP (PT), 12x12 mm |
| 安装类型 | Surface Mount |
| 工作温度 | -40 C to +125 C (Extended, -E suffix) |
| MSL 等级 | 3 |
| RoHS 状态 | Compliant |
PIC18F87K22-E/PT 80-pin tqfp (pt), 12x12 mm 引脚配置指南
PIC18F87K22-E/PT（80-pin tqfp (pt), 12x12 mm 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： PIC18F87K22-E/PT.
请参阅 数据手册 以查看完整引脚配置。
典型应用
PIC18F87K22-E/PT 适用于 6 应用s: Battery-Powered Wireless Sensor Nodes, Capacitive Touch User Interfaces, Industrial Control Panels with LCD, Automotive Body and Climate Modules, IoT Edge Nodes and Home Automation, Medical Monitoring and Diagnostic Devices.
Battery-Powered Wireless Sensor Nodes
The PIC18F87K22-E/PT's nanoWatt XLP technology delivers nanoamp-range sleep currents critical for battery-powered wireless sensor nodes. With 128 KB Flash it accommodates protocol stacks such as LoRaWAN, Zigbee, or proprietary sub-GHz stacks. The 12-bit ADC with up to 24 channels supports multiple sensor inputs, and the 64 MHz CPU clock provides real-time signal processing headroom. The device's 1.8 V to 5.5 V operating range allows direct connection to single-cell Li-ion or two-cell alkaline packs without an additional LDO.
推荐
Capacitive Touch User Interfaces
The integrated CTMU peripheral simplifies capacitive-touch button, slider, and proximity sensing by providing a constant-current source and timer-based capacitance measurement. With 128 KB Flash, designers can run sophisticated touch firmware libraries from Microchip's mTouch suite. The 12-bit ADC captures analog signals from the touch electrodes, and the 64 MHz CPU executes touch algorithms in real time. The 80-pin TQFP package offers ample I/O for backlighting, haptic feedback, and segment or TFT displays.
推荐
Industrial Control Panels with LCD
The PIC18F87K22-E/PT's integrated LCD driver and 80-pin TQFP package make it suitable for industrial control panels driving segment LCDs up to several hundred pixels. The 128 KB Flash stores multi-language menus and configurable HMI logic. nanoWatt XLP sleep modes enable battery-backed panel operation during power loss, and the 12-bit ADC interfaces with potentiometers, temperature sensors, and 4-20 mA loops. The extended -40 C to +125 C temperature range suits factory-floor installations.
推荐
Automotive Body and Climate Modules
Automotive body and climate modules demand extended temperature grades, robust peripherals, and large memory budgets for CAN/LIN stack libraries. The PIC18F87K22-E/PT's -40 C to +125 C extended operating range and 128 KB Flash suit climate-control, seat-control, and lighting modules. Multiple Enhanced USART ports support LIN bus connectivity, and MSSP modules handle SPI peripherals. The 12-bit ADC with up to 24 channels captures temperature, position, and current-sense signals across the vehicle body domain.
推荐
IoT Edge Nodes and Home Automation
IoT edge nodes benefit from the PIC18F87K22-E/PT's nanoWatt XLP sleep currents and rich peripheral set. The 128 KB Flash holds TLS or application-layer security stacks, while the 4 KB RAM supports connection state buffers. The MSSP peripheral interfaces with sensors over I2C or SPI, and the Enhanced USART connects to Wi-Fi or BLE modules. Multiple timer modules support PWM-driven LED lighting or motor control, and the 12-bit ADC reads analog environmental sensors.
推荐
Medical Monitoring and Diagnostic Devices
Medical monitoring devices require deterministic 8-bit control, low power consumption, and reliable operation across extended temperature ranges. The PIC18F87K22-E/PT's nanoWatt XLP technology extends battery life in portable monitors, and the 12-bit ADC with up to 24 channels captures multiple physiological signals simultaneously. The 128 KB Flash supports FDA-compliant firmware with logging capabilities, and the 64 MHz CPU processes filter and threshold algorithms in real time. Multiple USART ports connect to Bluetooth or Wi-Fi data links.
推荐
推荐产品汇总
工程参考数据： PIC18F87K22-E/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 | PIC18F86K22-E/PT | PIC18F85K22-E/PT | PIC18F87K22-I/PT | PIC18F8722-I/PT | PIC18F8720-E/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 80-pin TQFP (PT), 12x12 mm | 80-pin TQFP (PT) - same | 80-pin TQFP (PT) - same | 80-pin TQFP (PT) - same | 80-pin TQFP (PT) - same | 80-pin TQFP (PT) - same |
| Flash Memory | 128 KB | 64 KB | 32 KB | 128 KB | 128 KB | 128 KB |
| RAM | 4 KB | 4 KB | 2 KB | 4 KB | 3.9 KB | 3.9 KB |
| Maximum CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 40 MHz | 40 MHz |
| nanoWatt XLP | Yes | Yes | Yes | Yes | No (legacy) | No (legacy) |
| CTMU Peripheral | Yes | Yes | Yes | Yes | No (legacy) | No (legacy) |
| Operating Temperature | -40 C to +125 C (Extended) | -40 C to +125 C (Extended) | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) |
关键差异点
- Largest Flash budget in the K22 family in the same 80-pin TQFP （对比 PIC18F86K22-E/PT)
- nanoWatt XLP and CTMU peripherals absent on legacy PIC18F parts （对比 PIC18F8722-I/PT)
- Extended -40 C to +125 C temperature grade for industrial/automotive （对比 PIC18F87K22-I/PT)
设计说明
Decouple the Vcap pin with a low-ESR bulk capacitor (typically 4.7 uF to 10 uF ceramic) and place it as close to the Vcap pin as the PCB layout allows. Provide separate VDD/VSS pairs for the analog and digital sections and decouple each pair with a 100 nF ceramic in parallel with a bulk capacitor. nanoWatt XLP sleep modes can drop quiescent current to sub-microamp levels when peripherals are disabled and the core is in Sleep.
Route the ICSP/ICD pins (PGC, PGD, MCLR) to a dedicated programming/debug header to enable in-circuit debugging with MPLAB X IDE and ICD tools. Place the programming header on the edge of the board or in an accessible location. The 80-pin TQFP package requires a 0.5 mm pitch land pattern with 0.3 mm via drill for fan-out; use 4-layer PCB stack-up with a dedicated ground plane to minimize EMI from the 64 MHz CPU clock.
Watch the maximum source/sink current per I/O pin (typical 25 mA) and aggregate VDD/VSS current limits when driving relays or LED arrays. Use external drivers or transistors if the design exceeds these limits. Confirm that CTMU current source calibration values from Microchip's mTouch library are applied correctly; miscalibrated CTMU readings can yield unstable touch button response. Avoid running the CPU at 64 MHz below 2.7 V VDD - the device requires higher voltage for full-speed operation.
合规信息
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - this is a PIC18F general-purpose part, not an automotive-qualified MCU. For AEC-Q100 applications, select PIC18F K40 or PIC18F Q-series variants.