PIC16F872-E/SS - 8-Bit 20MHz 3.5KB Flash MCU | Microchip | SSOP-28
MPN: PIC16F872-E/SS ✓ فعالPIC16F872-E/SS نمای کلی
A microcontroller (MCU) is a single-chip computer containing a CPU, memory, and programmable I/O peripherals. The PIC16F872 belongs to Microchip's mid-range PIC16 family, which sits in the hierarchy: microcontroller -> embedded processor -> semiconductor device. Within that family, the PIC16F872 is a peripheral-rich member offering 5 channels of 10-bit ADC, two additional timers, a Capture/Compare/PWM (CCP) module, and a Master Synchronous Serial Port (MSSP) configurable for SPI or I2C communication. The 35 single-word instruction RISC core simplifies code development while delivering deterministic real-time response.
Key features include 5 channels of 10-bit analog-to-digital conversion for sensor interfacing, an MSSP supporting both 3-wire SPI and 2-wire I2C protocols, two 8-bit timers plus one 16-bit timer for flexible event capture, and 64 bytes of EEPROM for non-volatile data storage. In-circuit serial programming (ICSP) and in-circuit debugger (ICD) support allow firmware updates and debugging without removing the device from the PCB, accelerating prototyping and field service.
Typical applications include industrial control systems, sensor signal conditioning front-ends, automotive body and chassis subsystems, low-cost motor control loops via the CCP/PWM channel, and battery-powered metering products that demand low quiescent current. The PIC16F872-E/SS is pin-compatible with several PIC16F87x siblings, enabling easy migration when additional memory or peripheral resources are required.
When designing with this device, allocate four pins for in-circuit programming/debug (ICSPDAT/ICSPCLK plus VPP and VDD/GND) even if the debugger is not used in production. Choose a 20 MHz crystal only if the instruction-cycle budget truly requires it; a 4 MHz resonator typically satisfies most loop-control tasks while reducing EMI.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design considerations not consolidated in the manufacturer datasheet - giving engineers a faster procurement and architecture decision path.
جایگزین‌های drop-in برای PIC16F872-E/SS — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای PIC16F872-E/SS (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در ADC, Package, Timers, I/O Pins, Core.
PIC16F872-I/SS
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC16F873-I/SS
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC16F874-I/SS
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC16F876-I/SS
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC16F870-I/SS
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16F871-I/PT
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16F872-E/SS حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core | PIC16 8-bit RISC |
| Program Memory | 3.5 KB (2K x 14) Flash |
| Data Memory (SRAM) | 128 bytes |
| EEPROM | 64 bytes |
| حداکثر فرکانس کلاک | 20 MHz |
| Instruction Cycle Time | 200 ns |
| I/O Pins | 22 |
| ADC | 5 channels x 10-bit |
| Timers | 2 x 8-bit + 1 x 16-bit |
| CCP/PWM Modules | 1 |
| Serial Interface | MSSP (SPI / I2C) |
| Instruction Set Size | 35 single-word instructions |
| دمای کاری | -40C to +125C (Extended, -E) |
| بسته‌بندی | 28-pin SSOP |
| Programming/Debug | ICSP and ICD supported |
| وضعیت RoHS | Compliant |
پیکربندی پین PIC16F872-E/SS
| پین 1 | MCLR/VPP — Master Clear (reset) input or programming voltage |
| پین 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| پین 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| پین 4 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| پین 5 | RA3/AN3/VREF- — PORTA bit 3 / analog input 3 / ADC VREF- |
| پین 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| پین 7 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / SPI slave select |
| پین 8 | VSS — Ground reference |
| پین 9 | OSC1/CLKIN — Crystal oscillator input / external clock in |
| پین 10 | OSC2/CLKOUT — Crystal oscillator output / clock out |
| پین 11 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator out / Timer1 clock in |
| پین 12 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator in / CCP2 output |
| پین 13 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| پین 14 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| پین 15 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| پین 16 | RC5/SDO — PORTC bit 5 / SPI data out |
| پین 17 | RC6 — PORTC bit 6 |
| پین 18 | RC7 — PORTC bit 7 |
| پین 19 | VSS — Ground reference |
| پین 20 | VDD — Positive supply |
| پین 21 | RB0/INT — PORTB bit 0 / external interrupt |
| پین 22 | RB1 — PORTB bit 1 |
| پین 23 | RB2 — PORTB bit 2 |
| پین 24 | RB3/PGM — PORTB bit 3 / low-voltage programming |
| پین 25 | RB4 — PORTB bit 4 |
| پین 26 | RB5 — PORTB bit 5 |
| پین 27 | RB6/PGC — PORTB bit 6 / ICSP clock |
| پین 28 | RB7/PGD — PORTB bit 7 / ICSP data |
کاربردهای معمول
PIC16F872-E/SS مناسب است برای 6 کاربردs: Industrial Process Control, Automotive Body and Chassis ECUs, Battery-Powered Sensor Nodes, Low-Cost Motor Control (PWM/H-bridge), Consumer Appliance Control Boards, Smart Metering and Energy Monitoring.
Industrial Process Control
The PIC16F872-E/SS is well matched to industrial process control loops thanks to its 5-channel 10-bit ADC for multi-sensor acquisition and 22 I/O for actuator drive. Its -40C to +125C operating range handles panel-side cabinets near motor drives, while the MSSP running I2C or SPI talks to modern sensor front-ends and HMI displays. The 200 ns instruction cycle supports deterministic PID loops at sub-millisecond update rates, and the 64-byte EEPROM retains calibration constants across power cycles without an external memory IC.
پیشنهادی
Automotive Body and Chassis ECUs
The PIC16F872-E/SS Extended temperature grade (-40C to +125C) and 28-SSOP footprint suit automotive body modules such as mirror controllers, seat adjusters, and lighting drivers. The CCP/PWM module generates accurate dimming and motor-drive waveforms, while the 10-bit ADC reads potentiometers for position feedback. The MSSP links to peripheral drivers over SPI, and the low-power SLEEP mode reduces quiescent draw on always-on battery rails. For under-hood deployment, migrate to PIC16F872 with the automotive-qualified PIC16F873A-I/SS sibling.
پیشنهادی
Battery-Powered Sensor Nodes
For IoT and remote-monitoring sensor nodes, the PIC16F872-E/SS draws less than 1 uA in SLEEP mode and wakes on interrupt to service scheduled measurements, making it ideal for multi-year battery deployments. The 5-channel ADC sequentially reads temperature, humidity, and gas sensors, while the MSSP streams results to a connected radio module over SPI. Its 22 I/O pins free up GPIOs for status LEDs and user buttons, and the on-chip EEPROM logs calibration drift that survives brownouts without external FRAM.
پیشنهادی
Low-Cost Motor Control (PWM/H-bridge)
The PIC16F872-E/SS CCP/PWM module drives MOSFET H-bridges for small DC motors, fans, and pumps up to several amps when paired with gate drivers. Its 16-bit timer provides precise PWM frequency control, and the 10-bit ADC closes the current or RPM feedback loop in software without external DSP hardware. The extended temperature range supports under-hood automotive and outdoor industrial environments, while the SSOP-28 footprint simplifies hand-soldered prototypes and high-density PCB layouts.
پیشنهادی
Consumer Appliance Control Boards
Small kitchen and home appliances (coffee makers, air purifiers, washing-machine control panels) deploy the PIC16F872-E/SS as the main user-interface controller. It scans keypads, drives 7-segment or LCD character displays, regulates heating elements via PWM, and talks to sensor boards over I2C. The 35-instruction RISC core keeps firmware small and predictable, while in-circuit serial programming (ICSP) enables end-of-line calibration and field firmware updates without desoldering.
پیشنهادی
Smart Metering and Energy Monitoring
The PIC16F872-E/SS supports single-phase energy meters by combining its 10-bit ADC for current/voltage sensing, MSSP for communication with companion metering ICs, and 64-byte EEPROM for tariff and tamper-log storage. The extended temperature range suits outdoor meter enclosures, and the deterministic 200 ns instruction cycle ensures accurate RMS and power-factor calculations synchronized to mains zero-crossing events. SPI to an external LoRa or PLC modem extends connectivity to AMI back-haul networks.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای PIC16F872-E/SS — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | PIC16F872-I/SS | PIC16F873-I/SS | PIC16F874-I/SS | PIC16F876-I/SS | PIC16F870-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SSOP-28 | SSOP-28 - same | SSOP-28 - same | SSOP-28 - same | SSOP-28 - same | SSOP-28 - same |
| Program Memory | 3.5 KB Flash | 3.5 KB | 7 KB | 7 KB | 14 KB | 2 KB |
| SRAM | 128 B | 128 B | 128 B | 192 B | 368 B | 128 B |
| EEPROM | 64 B | 64 B | 128 B | 128 B | 256 B | 64 B |
| ADC Channels / Resolution | 5 x 10-bit | 5 x 10-bit | 5 x 10-bit | 8 x 10-bit | 5 x 10-bit | 5 x 10-bit |
| Operating Temperature | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
| CCP/PWM Channels | 1 | 1 | 2 | 2 | 2 | 1 |
| Serial Interface | MSSP (SPI/I2C) | MSSP (SPI/I2C) | MSSP + USART | MSSP + USART | MSSP + USART | MSSP (SPI/I2C) |
تفاوت‌های کلیدی
- Extended -40C to +125C temperature grade in same SSOP-28 footprint (در مقابلPIC16F872-I/SS)
- Doubles program memory to 7 KB in pin-compatible upgrade path (در مقابلPIC16F873-I/SS)
- Larger EEPROM and USART addition in same package (در مقابلPIC16F876-I/SS)
یادداشت‌های طراحی
Reserve a 4-pin ICSP header (ICSPCLK, ICSPDAT, MCLR/VPP, GND) even when no debugger is used in production - this allows in-system firmware updates during end-of-line test. Keep the trace from MCLR/VPP to the ICSP header under 50 mm to avoid ringing during programming voltage transitions. Place a 10 kohm pull-up on MCLR and a decoupling capacitor pair (100 nF + 10 uF) within 5 mm of VDD/GND pins 20 and 19 respectively.
Do not leave the OSC1/OSC2 pins floating when using an external clock - tie unused clock input pins to VSS through 10 kohm. Configure unused I/O pins as outputs driving low rather than inputs to minimize supply current. The CONFIG word must be programmed with the correct oscillator selection and watchdog timer setting; an incorrect WDTE bit will cause spurious resets in noisy industrial environments.
Estimated: With a 20 MHz crystal and 15 pF load capacitors, total loop trace length should be kept under 10 mm to avoid exceeding the 200 ns instruction cycle timing margin. For long SPI buses (>50 mm) between the PIC16F872 and peripheral ICs, add 33 ohm series resistors at the driving pins to dampen reflections, and route SPI signals over a continuous ground plane. The MSSP in I2C mode requires external 4.7 kohm pull-ups on SDA and SCL regardless of bus length.
Estimated: Average current consumption is roughly 2 mA active at 4 MHz / 5V and below 1 uA in SLEEP mode. For battery-powered designs, duty-cycle the MCU on a 1:100 ratio (10 ms active per second) to keep average draw near 20 uA. Brown-out detection (BOR) should be enabled in the CONFIG word to prevent Flash corruption during VDD dips below 4.0V; otherwise firmware may execute erratically from a partially erased program memory cell.
اطلاعات انطباق
RoHS and REACH compliance per Microchip product page. The PIC16F872-E/SS is not AEC-Q100 qualified - for automotive AEC-Q100 applications, choose PIC16F873A-I/SS or PIC16F876A-I/SS siblings that carry the Q-grade designation. Lead-free reflow profile per J-STD-020.
