PIC16F687-E/ML - 8-bit 20MHz 3.5KB Flash MCU | Microchip
MPN: PIC16F687-E/ML ✓ فعالPIC16F687-E/ML جائزہ
An 8-bit flash microcontroller is a small single-chip computer built around an 8-bit data path with non-volatile Flash program memory that can be rewritten thousands of times. The PIC16F687 belongs to the broader hierarchy: microcontroller -> embedded MCU -> semiconductor -> integrated circuit. Within Microchip's portfolio, the PIC16 family sits between the baseline PIC10/12/16 and the high-performance PIC18/PIC24 families, optimized for cost-sensitive, low-power, moderate-performance applications. The 'nanoWatt' technology reference in its product page indicates use of Microchip's low-power process enhancements, including multiple sleep modes and dynamic oscillator switching.
Key features include 11 I/O pins supporting digital I/O, ADC input, comparator input, and PWM output; a 10-bit ADC with up to 12 channels; two analog comparators; one Enhanced Capture/Compare/PWM (ECCP) module and one Capture/Compare/PWM (CCP) module; an EUSART module for serial communication; and a 2.0V to 5.5V wide operating voltage range. The 20MHz internal oscillator eliminates the need for an external crystal in many designs. The 'E' suffix denotes the Extended temperature grade (-40C to +125C).
Architecturally, the device uses a Harvard-style separate code and data bus, 14-bit instruction width, 35 single-word instructions, and an 8-level deep hardware stack. The mid-range core executes one instruction per four clock cycles, yielding 200ns instruction time at 20MHz. The 4x4 mm QFN package with exposed pad provides a compact footprint and low thermal resistance suitable for dense PCB layouts.
Typical applications include low-cost sensor interfaces, small motor controls, LED lighting controllers, battery chargers, smoke detectors, remote controls, consumer appliances, and industrial control modules where 8-bit performance and small footprint outweigh raw MIPS. The PIC16F687 also supports in-circuit serial programming (ICSP) and in-circuit debugging via two I/O lines.
When designing with this part, allocate the RA0/RA1 pins for ICSP/ICD if in-field firmware updates are required. Decouple VDD with a 100nF ceramic capacitor placed within 3mm of the package, and tie the exposed thermal pad to GND for optimal thermal and electrical performance. Choose the 'I' (Industrial, -40C to +85C) variant if extended temperature is not needed to reduce unit cost.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
کے لیے ڈراپ اِن متبادل PIC16F687-E/ML — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں PIC16F687-E/ML (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, Timers, Operating Temperature, I/O Pins, ADC.
PIC16F677-E/ML
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F689-E/ML
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F685-E/ML
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہ📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC16F684-E/ML
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC16F685T-I/ML
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F684-I/ML
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F687-E/ML زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | PIC16 mid-range 8-bit RISC |
| Instruction Set Width | 14-bit |
| Program Memory (Flash) | 3.5 KB (2K x 14) |
| Data SRAM | 128 bytes |
| Data EEPROM | 256 bytes |
| CPU Speed | 20 MHz (5 MIPS) |
| Operating Voltage | 2.0 V to 5.5 V |
| I/O Pins | 11 |
| ADC | 10-bit, up to 12 channels |
| Analog Comparators | 2 |
| PWM Modules | 1 ECCP + 1 CCP |
| Serial Interface | EUSART (RS-232/RS-485 capable) |
| Timers | 2x 8-bit, 1x 16-bit |
| پیکیج | 20-pin QFN (4x4 mm) with exposed pad |
| Temperature Grade (E suffix) | -40C to +125C (Extended) |
| ماؤنٹنگ ٹائپ | Surface Mount |
| RoHS اسٹیٹس | Compliant |
PIC16F687-E/ML پن کنفیگریشن
| پن 1 | RA0/AN0/C1IN+/ICSPDAT/ULPWU — Bidirectional I/O / ADC input / comparator input / ICSP data / ultra-low-power wake-up |
| پن 2 | RA1/AN1/C1IN-/VREF-/ICSPCLK — Bidirectional I/O / ADC input / comparator input / ADC Vref- / ICSP clock |
| پن 3 | RA2/AN2/C2IN+/VREF+/CVREF — Bidirectional I/O / ADC input / comparator input / ADC Vref+ / comparator Vref output |
| پن 4 | RA3/AN3/C1OUT — Bidirectional I/O / ADC input / comparator 1 output |
| پن 5 | RA4/AN4/C2OUT/CCP1/OSC2/CLKOUT — Bidirectional I/O / ADC input / comparator 2 output / CCP1 output / oscillator output |
| پن 6 | RA5/AN5/C2IN-/OSC1/CLKIN — Bidirectional I/O / ADC input / comparator input / oscillator input |
| پن 7 | RC0/AN6/P1D/C2IN+ — Bidirectional I/O / ADC input / PWM output / comparator 2 input |
| پن 8 | RC1/AN7/P1C/C2IN- — Bidirectional I/O / ADC input / PWM output / comparator 2 input |
| پن 9 | RC2/AN8/P1B/C12IN3- — Bidirectional I/O / ADC input / PWM output / comparator 1/2 input |
| پن 10 | RC3/AN9/P1C/C12IN2- — Bidirectional I/O / ADC input / PWM output / comparator 1/2 input |
| پن 11 | RC4/C12OUT/TX/CK — Bidirectional I/O / comparator output / EUSART async TX or sync clock |
| پن 12 | RC5/RX/DT — Bidirectional I/O / EUSART async RX or sync data |
| پن 13 | RC6/AN10/P1A/TX/CK — Bidirectional I/O / ADC input / PWM output / EUSART TX/clock |
| پن 14 | RC7/AN11/RX/DT — Bidirectional I/O / ADC input / EUSART RX/data |
| پن 15 | VSS — Ground reference |
| پن 16 | VDD — Positive power supply (2.0V to 5.5V) |
| پن 17 | RA6/OSC2/CLKO — Bidirectional I/O / oscillator output / clock output |
| پن 18 | RA7/OSC1/CLKI — Bidirectional I/O / oscillator input / clock input |
| پن 19 | RB4/AN10/CCP1/P1D — Bidirectional I/O / ADC input / CCP1 / PWM output |
| پن 20 | RB5/AN11/P1C — Bidirectional I/O / ADC input / PWM output |
عام استعمالات
PIC16F687-E/ML کے لیے موزوں ہے 6 ایپلیکیشنs: Low-Cost Sensor Interface Module, LED Lighting Controller, Battery Charger / Power Bank, Small Brushless DC Motor Control, Smoke / CO Detector Logic Board, Consumer Remote Control / IR Transmitter.
Low-Cost Sensor Interface Module
The PIC16F687-E/ML suits low-cost sensor interfaces because its 10-bit ADC with up to 12 channels and two analog comparators digitize analog sensor signals directly without external signal conditioning, while the 20MHz CPU executes averaging and threshold algorithms at 5 MIPS, well above typical 8-bit MCU application needs. Its 2.0V-5.5V range allows direct connection to 3.3V or 5V sensor boards. The 20-pin QFN (4x4 mm) keeps the sensor PCB small.
تجویز کردہ
LED Lighting Controller
The PIC16F687-E/ML is well-suited for LED lighting controllers due to its 1 ECCP + 1 CCP module that generates PWM dimming signals for multi-channel LED strings, its 2.0V-5.5V operation matching common LED driver rails, and the 4x4 mm QFN package that fits inside compact bulb or strip housings. The EUSART supports DMX or wireless module links for tunable-white or RGBW fixtures, and the 256-byte EEPROM stores calibration and trim values across power cycles.
تجویز کردہ
Battery Charger / Power Bank
The PIC16F687-E/ML fits battery charger and power bank designs because its two analog comparators implement precise over-voltage and over-current protection without external op-amps, while the 10-bit ADC monitors battery voltage and charge current in real time. The 2.0V minimum VDD operation allows direct connection to single-cell Li-Ion cells through a regulator, and the nanoWatt sleep modes minimize quiescent current during standby, extending shelf life.
تجویز کردہ
Small Brushless DC Motor Control
For small brushless DC motor control, the PIC16F687-E/ML delivers PWM commutation signals from its ECCP module with complementary outputs and dead-band control, while the 20 MHz CPU runs sensorless back-EMF zero-cross detection algorithms in real time. The QFN-20 4x4 mm footprint suits small fan or pump driver PCBs. The -40C to +125C extended temperature range (E suffix) supports under-hood or industrial motor enclosures.
تجویز کردہ
Smoke / CO Detector Logic Board
The PIC16F687-E/ML serves smoke and CO detector logic boards because its nanoWatt sleep modes draw microamps during idle, extending 10-year battery life. Its two comparators monitor the photoelectric or electrochemical sensor signal, the 10-bit ADC performs periodic measurement, and the ECCP drives the piezo alarm sounder. The 256-byte EEPROM retains calibration constants, while the 20-pin QFN keeps the BOM small and the PCB compact for ceiling-fixture mounting.
تجویز کردہ
Consumer Remote Control / IR Transmitter
The PIC16F687-E/ML is ideal for IR remote controls because its ECCP module generates accurate 38 kHz carrier PWM for NEC / RC5 / SIRC protocols, the 20 MHz core handles button-scanning debounce and protocol framing, and the nanoWatt sleep mode extends coin-cell life to multi-year durations. The 20-pin QFN (4x4 mm) easily fits behind keypads in slim remote enclosures. The 128-byte SRAM is sufficient for protocol buffers.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC16F687-E/ML — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC16F677-E/ML | PIC16F689-E/ML | PIC16F685-E/ML |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-pin QFN (4x4 mm) | 20-pin QFN (4x4 mm) - same | 20-pin QFN (4x4 mm) - same | 20-pin QFN (4x4 mm) - same |
| Program Memory (Flash) | 3.5 KB (2K x 14) | 3.5 KB (2K x 14) | 7 KB (4K x 14) | 7 KB (4K x 14) |
| Data SRAM | 128 bytes | 128 bytes | 256 bytes | 256 bytes |
| Data EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Max CPU Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Operating Voltage | 2.0V to 5.5V | 2.0V to 5.5V | 2.0V to 5.5V | 2.0V to 5.5V |
| I/O Pins | 11 | 11 | 11 | 11 |
| Temperature Grade | Extended -40C to +125C | Extended -40C to +125C | Extended -40C to +125C | Extended -40C to +125C |
اہم امتیازی خصوصیات
- Industry-standard mid-range x14 core (بمقابلہPIC16F684-E/ML)
- On-chip EUSART module eliminates external UART ICs (بمقابلہPIC16F677-E/ML)
- Compact 4x4 mm QFN with exposed pad (بمقابلہPIC16F687-I/SO (SOIC-20))
- Extended -40C to +125C temperature grade (بمقابلہPIC16F687-I/ML (Industrial grade))
ڈیزائن نوٹس
Place a single 100nF ceramic decoupling capacitor between VDD (pin 16) and VSS (pin 15) within 3mm of the package. For noisy analog designs, add a 10uF bulk capacitor near the regulator and a small ferrite bead in series with VDD. The exposed thermal pad (EP) on the QFN package must be soldered to a GND copper pour of at least 4x4 thermal vias to ground for proper thermal dissipation and electrical performance.
Reserve RA0 and RA1 for ICSPDAT and ICSPCLK if in-circuit serial programming or debugging is required in production. These pins cannot be repurposed as general I/O without losing in-field firmware update capability. According to Microchip programming specifications, these pins are required during the reset sequence for ICSP. If using as general I/O, you must provide a programming header and disconnect external loads during ICSP.
Route the oscillator pins RA6/OSC2 and RA7/OSC1 as short and symmetric as possible if using an external crystal. Keep crystal traces away from switching signals and surround them with a ground guard ring. For internal oscillator operation (default), RA6 and RA7 become general-purpose I/O but remain shared with the oscillator circuit, so disable the oscillator bits in configuration before driving RA6/RA7 as outputs.
Estimated: At VDD=5V, 20MHz CPU active, and typical I/O drive of 20mA total, the PIC16F687-E/ML draws approximately 8-11 mA. In sleep mode with WDT disabled, this drops to less than 1 uA. For battery-powered designs, use the nanoWatt sleep modes aggressively - sleep between ADC conversions and wake from the ADC interrupt to maximize battery life.
تعمیل کی معلومات
RoHS compliant per Microchip product page. PIC16F687 is not AEC-Q100 qualified - automotive designs should use the PIC16F687-E/ML with external qualification testing or select AEC-Q100-qualified parts from the PIC16F1xx family. Lead-free and halogen-free status should be confirmed with the latest manufacturer declaration.
