PIC16F87-I/ML - 8-Bit 20MHz 7KB Flash MCU | Microchip
部品番号: PIC16F87-I/ML ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $5.42 | $5.42 |
| 10 | $4.85 | $48.50 |
| 100 | $4.1 | $410.00 |
| 500 | $3.55 | $1,775.00 |
| 1,000 | $3.12 | $3,120.00 |
PIC16F87-I/ML 概要
A PIC16F microcontroller is part of Microchip's mid-range 8-bit RISC architecture family. PIC microcontrollers are Harvard-architecture devices that execute single-word instructions in as little as 200 ns, with a small instruction set (35 instructions for PIC16F87) and deterministic timing. Within the broader taxonomy, PIC16F87 sits as: 8-bit microcontroller -> PIC16 family -> PIC16F87 sub-family -> nanoWatt enhanced Flash MCU -> CMOS Flash-based MCU. nanoWatt Technology is Microchip's branding for low-power operating modes such as Sleep and the ability to run the CPU and peripherals from the internal RC oscillator, drastically reducing quiescent current versus earlier PIC16 parts.
Key features include a wide 2.0 V to 5.5 V supply range, brown-out reset (BOR), power-on reset (POR), watchdog timer with on-chip RC oscillator, ICD (In-Circuit Debug) support, and Flash program memory endurance of 100,000 erase/write cycles. The device supports in-circuit serial programming (ICSP) via two pins, allowing firmware updates without removing the MCU from the board. The internal 8 MHz RC oscillator with software-selectable frequency scaling gives designers flexibility when external crystals are undesirable.
The PIC16F87 architecture uses a 14-bit instruction word with separate code and data buses, optimizing instruction fetch while still permitting byte-level data access. The peripheral set is well suited to mixed-signal embedded designs: the Addressable USART supports RS-232/RS-485 links, the CCP module generates PWM or captures timing events, and the 10-bit ADC enables direct sensor interface. nanoWatt modes such as Sleep and Timer1 oscillator run on as little as a few microamperes.
Typical applications include industrial sensor nodes, automotive interior subsystems, white-goods control boards, low-end consumer appliances, and battery-powered measurement instruments where the 256-byte EEPROM provides convenient non-volatile parameter storage. The 28-QFN exposed-pad package enables compact PCB layouts. A leading design consideration is that the 28-pin QFN shares its footprint with other PIC16F8x family members, simplifying upgrade paths. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
ドロップイン代替品: PIC16F87-I/ML — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: PIC16F87-I/ML （同一形状・フットプリント） — 相違点: Package, Internal Oscillator, Core Architecture, Operating Temperature, ADC.
クイック比較ツール — 並列比較する代替部品を選択:
PIC16F87-E/ML
✅ ドロップイン✓ 在庫あり
$3.5 / 個
データシートを見る →PIC16F88-I/ML
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PIC16F87-I/ML-ICD
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
PIC16LF87-I/ML
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
PIC16F819-I/ML
✅ ドロップイン✓ 在庫あり
$1.92 / 個
データシートを見る →PIC16F87-I/ML 最大定格＆電気的特性
| Family | PIC16F |
| Core | 8-bit RISC (PIC16) |
| Program Memory (Flash) | 7 KB (4K x 14) |
| RAM | 368 bytes |
| EEPROM | 256 bytes |
| 最大クロック周波数 | 20 MHz |
| Instruction Cycle Time | 200 ns |
| Instruction Set Size | 35 single-word instructions |
| Supply Voltage (Vdd) | 2.0 V to 5.5 V (industrial 4.0-5.5 V) |
| I/O Pins | 16 |
| Internal Oscillator | 8 MHz (software-selectable) |
| ADC | 10-bit, up to 5 channels |
| Comparators | 2 analog comparators |
| CCP (Capture/Compare/PWM) | 1 module |
| Communication | Addressable USART |
| Timers | Timer0, Timer1 (with external gate), Timer2 |
| Watchdog Timer | Yes (on-chip RC oscillator) |
| Brown-out Reset (BOR) | Yes |
| Power-on Reset (POR) | Yes |
| In-Circuit Debug | ICD support |
| In-Circuit Serial Programming | ICSP via 2 pins |
| 動作温度範囲 | -40 C to +85 C (industrial) |
| パッケージ | 28-pin QFN (6x6 mm) with EP |
| 実装タイプ | Surface Mount |
| Technology | nanoWatt CMOS Flash |
| RoHS ステータス | Compliant |
PIC16F87-I/ML ピン構成
| ピン 1 | RA3/AN3/VREF+ — Bidirectional I/O, analog channel 3, ADC reference positive |
| ピン 2 | RA4/T0CKI — Bidirectional I/O, Timer0 clock input |
| ピン 3 | RA5/AN4/SS — Bidirectional I/O, analog channel 4, SPI slave select |
| ピン 4 | RA0/AN0 — Bidirectional I/O, analog channel 0 |
| ピン 5 | RA1/AN1 — Bidirectional I/O, analog channel 1 |
| ピン 6 | RA2/AN2/VREF- — Bidirectional I/O, analog channel 2, ADC reference negative |
| ピン 7 | VDD — Positive supply (4.0-5.5 V industrial) |
| ピン 8 | VSS — Ground reference |
| ピン 9 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| ピン 10 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| ピン 11 | RC0/T1OSO/T1CKI — Bidirectional I/O, Timer1 oscillator output or clock input |
| ピン 12 | RC1/T1OSI/CCP2 — Bidirectional I/O, Timer1 oscillator input, CCP2 |
| ピン 13 | RC2/CCP1 — Bidirectional I/O, CCP1 PWM output |
| ピン 14 | RC3/SCK/SCL — Bidirectional I/O, SPI clock, I2C clock |
| ピン 15 | RB0/INT — Bidirectional I/O, external interrupt |
| ピン 16 | RB1 — Bidirectional I/O |
| ピン 17 | RB2 — Bidirectional I/O |
| ピン 18 | RB3/PGM — Bidirectional I/O, low-voltage programming |
| ピン 19 | RB4 — Bidirectional I/O |
| ピン 20 | RB5 — Bidirectional I/O |
| ピン 21 | RB6/PGC — Bidirectional I/O, ICSP clock / ICD clock |
| ピン 22 | RB7/PGD — Bidirectional I/O, ICSP data / ICD data |
| ピン 23 | MCLR/VPP — Master clear reset / programming voltage |
| ピン 24 | RC4/SDI/SDA — Bidirectional I/O, SPI data in, I2C data |
| ピン 25 | RC5/SDO — Bidirectional I/O, SPI data out |
| ピン 26 | RC6/TX/CK — Bidirectional I/O, USART async TX / sync clock |
| ピン 27 | RC7/RX/DT — Bidirectional I/O, USART async RX / sync data |
| ピン 28 | VSS — Ground reference |
主な用途
PIC16F87-I/ML の用途: 6 件s: Industrial Sensor Interface Node, Automotive Interior Control Module, White Goods Control Board, Battery-Powered Measurement Instrument, Low-End Consumer Appliance Controller, RS-232/RS-485 Sensor Concentrator.
Industrial Sensor Interface Node
The PIC16F87-I/ML fits industrial sensor-interface nodes because its 10-bit ADC with up to 5 channels and 256 bytes of EEPROM support direct transducer digitisation and persistent calibration storage. The wide 4.0-5.5 V supply matches 5 V industrial bus rails, while the 20 MHz / 5 MIPS throughput is enough for digital filtering and HART or Modbus framing. Its nanoWatt Sleep mode at single-digit microamp quiescent current lets battery-backed remote nodes survive for years. Compared with the PIC16F88, the F87 trades one ADC channel for lower cost in volume.
おすすめ
Automotive Interior Control Module
The PIC16F87-I/ML suits automotive interior control modules such as HVAC flap drivers and seat-position controllers thanks to its 16 I/O lines for switch-matrix scanning, the CCP module for PWM-driven actuators, and the Addressable USART for body-network communication. Operating over the industrial -40 C to +85 C range, the part handles cabin-temperature extremes. The PIC16F87-E/ML (-40 C to +125 C) is the natural choice for under-hood modules. Drop-in compatibility between I and E grades lets designers standardise PCBs across both thermal zones.
おすすめ
White Goods Control Board
The PIC16F87-I/ML is well matched to white-goods control boards in washing machines, dishwashers, and small kitchen appliances where it must drive triac-controlled loads via opto-isolated outputs, read user-panel keypads, and run brushless-DC motor algorithms. Its 7 KB Flash holds application code plus a small bootloader for in-field firmware updates via ICSP, and the 368-byte RAM supports the table-driven state machines typical of appliance firmware. The 28-QFN (6x6 mm) is small enough to fit behind a display module.
おすすめ
Battery-Powered Measurement Instrument
For battery-powered handheld measurement instruments such as digital calipers, multimeters, and medical-grade spot monitors, the PIC16F87-I/ML offers nanoWatt Sleep at single-digit microamperes, fast wake-up via interrupts, and a wide 2.0-5.5 V supply that lets the device run from a single lithium coin cell. The 10-bit ADC captures sensor readings, while the 256-byte EEPROM stores calibration constants across power cycles. Compared with the PIC16LF88, the F87's lower cost makes sense when the design does not need the F88's extra ADC channels.
おすすめ
Low-End Consumer Appliance Controller
The PIC16F87-I/ML is a strong fit for low-end consumer appliances such as coffee machines, toasters, and humidifiers where its 7 KB Flash, 16 I/O lines, single CCP PWM channel, and integrated USART support all the typical control and user-interface functions. The exposed-pad 28-QFN keeps the PCB small and thermally robust, while ICSP programming via two pins eliminates a programming header on production boards. The F87's tiny instruction set (35 instructions) lowers firmware complexity for cost-sensitive designs.
おすすめ
RS-232/RS-485 Sensor Concentrator
The PIC16F87-I/ML works as a low-cost sensor concentrator that polls local analog and digital sensors and relays data over an Addressable USART configured for RS-485 multi-drop. The 256-byte EEPROM stores node address and calibration, while the 5 MIPS core handles the polling loop, checksum, and Modbus framing. The industrial -40 C to +85 C range covers factory-floor deployments. The 28-QFN footprint and pinout allow reuse across multiple product variants that share the same concentrator PCB.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: PIC16F87-I/ML — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | PIC16F87-E/ML | PIC16F88-I/ML | PIC16F87-I/ML-ICD | PIC16LF87-I/ML | PIC16F819-I/ML |
|---|---|---|---|---|---|---|
| Package | 28-QFN (6x6 mm) with EP | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 7 KB | 7 KB | 7 KB | 7 KB | 7 KB | 3.5 KB (-50%) |
| RAM | 368 B | 368 B | 368 B | 368 B | 368 B | 256 B (-30%) |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| Supply Voltage | 4.0 V to 5.5 V | 4.0 V to 5.5 V | 2.0 V to 5.5 V | 4.0 V to 5.5 V | 2.0 V to 3.6 V (LF) | 2.0 V to 5.5 V |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
主な差別化要因
- Pin-compatible upgrade path to PIC16F88 in same 28-QFN （vs PIC16F88-I/ML)
- Extended-temperature variant for harsh environments （vs PIC16F87-E/ML)
- Smaller memory footprint than PIC16F873A while keeping pinout （vs PIC16F873A-I/ML)
設計ノート
The 28-QFN package exposes its die through a thermal pad on the underside, which must be soldered to a ground copper pour with multiple thermal vias to keep junction temperature within Microchip's -40 C to +85 C (industrial) range. At 20 MHz the PIC16F87-I/ML dissipates roughly 25 mW worst case; without a thermal pad the QFN's theta_JA would exceed 80 C/W and the device could self-heat above ambient. Estimated junction rise = 25 mW x 80 C/W = 2 C above ambient without proper PCB copper, which is normally acceptable, but a 1 square-inch copper pour is still recommended to maintain margin across the full -40 C to +85 C range.
Place the 0.1 uF VDD bypass capacitor within 3 mm of the VDD pin (pin 7) and the VSS pin (pin 8) with a short, wide trace to the ground plane. Add a bulk 1 uF to 10 uF tantalum or ceramic on the same rail for switching transients. For multi-rail designs, route each VDD/VSS pair with its own decoupling capacitor. The ICSP pins RB6/PGC and RB7/PGD need a 10 kohm pull-up on MCLR/VPP for proper reset behaviour during programming.
Do not assume the device operates below 4.0 V on the I (Industrial) grade; the LF variant is required for 2.0-3.6 V operation. Confusing I and LF grades is a frequent cause of brown-out reset behaviour on low-voltage rails. Avoid enabling the watchdog timer without first clearing it in the main loop, since WDT reset at 18 ms (typical) will reboot the MCU mid-cycle. Use the CONFIG register to disable unused peripherals and reduce current draw.
The 20 MHz clock and USART at 115.2 kbps are within the QFN package's signal-integrity limits, but the analog AN0-AN4 inputs must be kept away from switching traces such as PWM outputs on RC1/RC2. Add a small RC filter (10 kohm + 100 pF) on each analog input to attenuate switching noise. The exposed thermal pad should be tied to VSS with a star-ground connection to avoid ground loops that would corrupt ADC readings.
コンプライアンス情報
RoHS compliant per Microchip product page. Not AEC-Q100 qualified; PIC16F87-E/ML is the extended-temperature variant. Industrial operating range -40 C to +85 C.
