PIC16LF872-I/SS - 8-Bit 20MHz 3.5KB FLASH MCU 28-SSOP | Microchip
MPN: PIC16LF872-I/SS ✓ فعالPIC16LF872-I/SS جائزہ
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals on one die. PIC microcontrollers use Microchip's RISC-based PIC16 architecture, which executes instructions in a single cycle (200 ns at 20 MHz) using only 35 single-word instructions. In the system hierarchy, this places the PIC16LF872 as a microcontroller -> 8-bit MCU -> embedded controller -> semiconductor IC.
Key features include 22 digital I/O pins, two 8-bit timers plus one 16-bit timer, a 10-bit multi-channel analog-to-digital converter (ADC), a USART/SCI serial port, an MSSP (Master Synchronous Serial Port) supporting SPI and I2C, and a watchdog timer. The device includes In-Circuit Debugging (ICD), self-programming support, and a 10 MHz internal oscillator option, allowing reduced component count and BOM cost. The 28-SSOP package has a body size of 5.30 mm x 10.20 mm with 0.65 mm pitch.
The PIC16LF872 architecture implements a Harvard-style bus with separate program and data paths, enabling deterministic instruction execution and predictable interrupt latency. Brown's-out Reset (BOR) and Power-on Reset (POR) are integrated, plus code protection to safeguard embedded firmware. The device consumes less than 1 µA in sleep mode at 3V, supporting long-life battery applications.
Typical applications include consumer appliances, automotive body electronics, industrial control panels, sensor signal conditioning, and low-cost motor control. The wide 2.2V-5.5V range also suits single-cell Li-ion or two-cell alkaline battery-powered designs. The compact 28-SSOP footprint enables high-density PCB layouts.
When designing, configure unused I/O pins as outputs to minimize current consumption and use the internal oscillator to reduce external component count. Confirm that the chosen programmer (e.g., PICkit 3/4 or ICD) supports the device family, and budget ADC acquisition time based on source impedance.
This page synthesizes distributor pricing across 13 sources, drop-in 28-SSOP alternatives, and practical design notes not found in the manufacturer datasheet.
کے لیے ڈراپ اِن متبادل PIC16LF872-I/SS — 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 PIC16LF872-I/SS (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, Timers, ADC, Core Architecture, Operating Temperature.
PIC16LF872-I/SO
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F872-I/SS
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC16LF870-I/SS
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16LF871-I/P
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16LF873A-I/SS
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16LF872-I/SS زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | PIC16 (8-bit RISC) |
| CPU Clock Frequency (max) | 20 MHz |
| Instruction Execution Time | 200 ns |
| Program Memory (FLASH) | 3.5 KB (2K x 14) |
| Data RAM | 128 bytes (128 x 8) |
| Data EEPROM | 64 bytes (64 x 8) |
| I/O Pins | 22 |
| ADC | 10-bit, 5 channels |
| Timers | 2 x 8-bit, 1 x 16-bit |
| Serial Interfaces | USART/SCI, MSSP (SPI / I2C) |
| Supply Voltage Range | 2.2 V to 5.5 V |
| آپریٹنگ درجہ حرارت رینج | -40 C to +85 C (Industrial) |
| پیکیج | 28-SSOP (5.30 mm x 10.20 mm, 0.65 mm pitch) |
| ماؤنٹنگ ٹائپ | Surface Mount |
| Internal Oscillator | 10 MHz (selectable) |
| Watchdog Timer | Yes (with on-chip RC oscillator) |
| In-Circuit Debug | ICD support |
| Self-Programming | Yes |
| Brown-out Reset / Power-on Reset | Yes |
| RoHS اسٹیٹس | Compliant |
PIC16LF872-I/SS پن کنفیگریشن
| پن 1 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| پن 2 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| پن 3 | RA2/AN2/VREF- — Digital I/O / Analog input channel 2 / ADC negative reference |
| پن 4 | RA3/AN3/VREF+ — Digital I/O / Analog input channel 3 / ADC positive reference |
| پن 5 | RA4/T0CKI — Digital I/O / Timer0 clock input (open-drain) |
| پن 6 | RA5/SS/AN4 — Digital I/O / SPI slave select / Analog input channel 4 |
| پن 7 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| پن 8 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| پن 9 | RC0/T1OSO/T1CKI — Digital I/O / Timer1 oscillator output / Timer1 clock input |
| پن 10 | RC1/T1OSI/CCP2 — Digital I/O / Timer1 oscillator input / Capture/Compare/PWM 2 |
| پن 11 | RC2/CCP1 — Digital I/O / Capture/Compare/PWM 1 |
| پن 12 | RC3/SCK/SCL — Digital I/O / SPI clock / I2C clock |
| پن 13 | RC4/SDI/SDA — Digital I/O / SPI data in / I2C data |
| پن 14 | RC5/SDO — Digital I/O / SPI data out |
| پن 15 | RC6/TX/CK — Digital I/O / USART TX / USART clock |
| پن 16 | RC7/RX/DT — Digital I/O / USART RX / USART data |
| پن 17 | GND — Ground |
| پن 18 | VDD — Positive supply (2.2V to 5.5V) |
| پن 19 | RB0/INT — Digital I/O / External interrupt 0 |
| پن 20 | RB1 — Digital I/O |
| پن 21 | RB2 — Digital I/O |
| پن 22 | RB3/PGM — Digital I/O / Low-voltage programming input |
| پن 23 | RB4 — Digital I/O / interrupt-on-change |
| پن 24 | RB5 — Digital I/O / interrupt-on-change |
| پن 25 | RB6/PGC — Digital I/O / In-circuit debugger clock |
| پن 26 | RB7/PGD — Digital I/O / In-circuit debugger data |
| پن 27 | MCLR/VPP — Master clear reset / programming voltage input |
| پن 28 | NC — Not connected (per datasheet) |
عام استعمالات
PIC16LF872-I/SS کے لیے موزوں ہے 7 ایپلیکیشنs: Consumer Appliance Control, Battery-Powered Sensor Node, Industrial Control Panel, Automotive Body Electronics, Small DC Motor / Fan Speed Controller, Educational / Hobby Development Board, Smart Card / RFID Reader Slave.
Consumer Appliance Control
The PIC16LF872-I/SS fits consumer appliance control boards because its 22 I/O pins directly drive segment LCDs, keypads, relays, and triac interfaces without external mux ICs. The 2.2V-5.5V supply accommodates both 3.3V logic-level sensor chains and legacy 5V relay drivers on the same PCB. With 5-channel 10-bit ADC, the MCU samples NTC thermistors for temperature regulation, while the MSSP SPI/I2C port drives EEPROM for user presets and an external RTC. FLASH self-programming supports field firmware updates via the appliance's service port. Per Microchip AN1229 reference design patterns, configure INT0 for zero-crossing detection to synchronize TRIAC firing and minimize EMI.
تجویز کردہ
Battery-Powered Sensor Node
The PIC16LF872-I/SS is well matched to wireless sensor nodes powered by 2x AA alkaline or single-cell Li-coin cells because its 2.2V minimum VDD covers the full battery discharge curve down to near-end-of-life. Sleep current below 1 µA at 3V (per Microchip datasheet DS30210F) lets a duty-cycled sensor node run years on one battery. The 10 MHz internal oscillator eliminates an external crystal, saving $0.20-$0.40 BOM and reducing parasitic leakage. Five 10-bit ADC channels read temperature, humidity, and battery voltage; the USART handles UART-linked radios; MSSP I2C drives low-power sensor ICs. Use the watchdog timer with internal RC (~18 ms nominal) to recover from firmware lockups during RF brown-out.
تجویز کردہ
Industrial Control Panel
The PIC16LF872-I/SS suits industrial control panels where its -40 to +85 C industrial temperature range and wide 2.2V-5.5V supply tolerate factory-floor power transients. The 22 I/O lines handle 7-segment LED or character-LCD displays, optocoupler-isolated inputs, and 24V logic-level interfaces via external resistors. Its Brown-out Reset and Power-on Reset features ensure deterministic startup under noisy 24V->5V buck converter rails. The MSSP SPI drives MAX7219 LED drivers or external EEPROMs for parameter logging, while the USART links to RS-485 transceivers like MAX3485 for Modbus RTU. The 10-bit ADC (5 channels, ~10 µs conversion) reads 4-20 mA loopback resistors for analog sensor inputs.
تجویز کردہ
Automotive Body Electronics
Although the PIC16LF872-I/SS is the standard -40 to +85 C industrial grade (not AEC-Q100), its wide supply range and PIC16 robustness make it useful for non-safety automotive body modules such as interior lighting controllers, seat heaters, and accessory switches. The 22 I/O pins drive LED drivers, MOSFET half-bridges for seat motors, and LIN bus transceivers like TJA1027 via the USART. The 10-bit ADC samples NTC seat temperature sensors and current shunts; the MSSP I2C port reads ambient light sensors. Brown-out Reset prevents EEPROM corruption during cranking transients. For AEC-Q100-qualified versions of the same pinout, look at PIC16F1936-I/SS in the enhanced midrange family.
تجویز کردہ
Small DC Motor / Fan Speed Controller
The PIC16LF872-I/SS is well suited for closed-loop DC motor or fan speed controllers because its 16-bit timer (Timer1) with capture/compare can be triggered by Hall sensor pulses for accurate RPM measurement, while the 10-bit PWM output (CCP module) drives a MOSFET gate through a gate driver. The 5-channel ADC reads back EMF sensing resistors for sensorless applications. The MSSP SPI port drives external gate drivers like MCP14A0901 or communicates with a host controller. Watchdog timer and BOR ensure safe restart after motor stall events. Per Microchip AN894 reference design, use Timer0 overflow as a timebase for PID calculation and the ADC in sleep-idle mode to save power.
تجویز کردہ
Educational / Hobby Development Board
The PIC16LF872-I/SS is widely used in university curricula and hobbyist projects because of its simple 35-instruction RISC architecture and free MPLAB X IDE + XC8 toolchain support. The 28-SSOP breakout footprint pairs well with PICkit 3/4 and ICD headers for in-circuit debugging - students can single-step through code without external hardware. Per Microchip datasheet DS30210F, the 22 I/O and built-in peripherals (USART, ADC, I2C, SPI) let one chip implement a full lab exercise: UART terminal, ADC voltmeter, I2C EEPROM programmer, or SPI-controlled OLED. The 3.5KB FLASH is enough for several textbook exercises while still allowing the LF low-voltage variant to run from a single 3V coin cell.
تجویز کردہ
Smart Card / RFID Reader Slave
The PIC16LF872-I/SS fits as a slave MCU in dual-MCU RFID reader designs, where it handles low-level ISO 14443 or 15693 protocol framing while a host processor runs the application stack. The MSSP SPI port connects to a CRYPTO or NFC frontend IC at up to 10 MHz; the USART bridges to the host. The 10-bit ADC monitors antenna tuning voltage; the 16-bit Timer1 provides microsecond-accurate timing for bit-period sampling. The 128-byte RAM is sufficient for protocol buffers, and the 64-byte EEPROM stores per-card keys. The 2.2V-5.5V supply lets the same board run from 3.3V regulators commonly used in NFC frontend designs.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC16LF872-I/SS — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC16LF872-I/SO | PIC16F872-I/SS | PIC16LF870-I/SS | PIC16LF873A-I/SS |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP (0.65 mm pitch) | 28-SOIC (1.27 mm pitch) - different footprint | 28-SSOP - same footprint | 28-SSOP - same footprint | 28-SSOP - same footprint |
| Core | PIC16 8-bit RISC | PIC16 8-bit RISC | PIC16 8-bit RISC | PIC16 8-bit RISC | PIC16 enhanced midrange 8-bit |
| Max CPU Clock | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| FLASH Program Memory | 3.5 KB (2K x 14) | 3.5 KB | 3.5 KB | 2 KB (-43%) | 7 KB (+100%) |
| RAM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 192 bytes (+50%) |
| EEPROM | 64 bytes | 64 bytes | 64 bytes | 64 bytes | 128 bytes (+100%) |
| I/O Pins | 22 | 22 | 22 | 22 | 22 |
| Supply Voltage | 2.2 V to 5.5 V (LF) | 2.2 V to 5.5 V (LF) | 4.0 V to 5.5 V (standard) | 2.2 V to 5.5 V (LF) | 2.0 V to 5.5 V (LF) |
| ADC | 10-bit, 5 channels | 10-bit, 5 ch | 10-bit, 5 ch | 10-bit, 5 ch | 10-bit, 5 ch |
| Serial Interfaces | USART + MSSP (SPI/I2C) | USART + MSSP | USART + MSSP | USART + MSSP | USART + MSSP + 2nd USART |
| Pinout Compatibility | Reference | Drop-in except package | Drop-in (check VDD) | Pin-compatible per chart 00148J2 | Pin-compatible per PIC16F87x family |
اہم امتیازی خصوصیات
- Wider voltage range than non-LF variant (بمقابلہPIC16F872-I/SS)
- Smaller pitch than 28-SOIC (بمقابلہPIC16LF872-I/SO)
- Pin-compatible upgrade path to more memory (بمقابلہPIC16LF873A-I/SS)
- More FLASH than PIC16LF870 (بمقابلہPIC16LF870-I/SS)
ڈیزائن نوٹس
Power supply design: Place a 100 nF decoupling capacitor within 5 mm of VDD (pin 18) and a 10 µF bulk capacitor near the regulator. The PIC16LF872-I/SS BOR (Brown-out Reset) trip is factory-set around 4.0V (F-version) or 2.0V (LF-version). For designs that must operate across 2.5-5.5V, configure BOR in software via PCON register per Microchip datasheet DS30210F. The /MCLR pin (pin 27) requires a 10 kohm pull-up to VDD and a 100 nF cap to ground for in-circuit debugging; omit the cap if you only need reset (not ICD).
PCB layout: For the 28-SSOP variant, keep clock traces short (<25 mm) and away from switching nodes. Use a guard ring around the OSC1/OSC2 crystal pins and connect the crystal case to ground. Per Microchip AN1229 EMC guidelines, place the analog AVSS/AVDD (here shared with VDD/GND) away from digital switching currents - if analog accuracy is critical, add ferrite beads and a separate analog LDO. Keep the ADC input traces short and use a 100 ohm series resistor with 100 nF cap to limit current injection during ADC channel switching.
Common pitfalls: (1) Selecting configuration bits - the watchdog timer is enabled by default in some configurations and can lock up the firmware; disable WDTE in CONFIG1 if not needed. (2) The 10-bit ADC needs minimum acquisition time; for 10 kohm source impedance, TACQ must be at least ~13 µs per datasheet DS30210F. (3) Reading EEPROM - allow ~4 ms typical write time and clear EEIF in interrupt service. (4) Brown-out detection is not the same as low-voltage detect; use BOR + sleep mode for lowest quiescent current.
Thermal considerations: The PIC16LF872-I/SS in 28-SSOP is rated for -40 C to +85 C industrial operation. Typical supply current is 2-10 mA at 5V/20 MHz (active) and <1 µA in sleep. Estimated: at 5V/20 MHz active with 5 mA, dissipation is ~25 mW - no heatsink needed. Junction-to-ambient thermal resistance theta_JA for 28-SSOP is approximately 100 C/W per Microchip packaging specs, yielding a self-heating rise of only ~2.5 C above ambient. No thermal management is required for normal operation.
تعمیل کی معلومات
Standard -40C to +85C industrial grade; not AEC-Q100 qualified. For automotive safety applications use PIC16F1936-I/SS (enhanced midrange, AEC-Q100).
