PIC16F884-E/ML - 8-Bit 20MHz 7KB Flash MCU 44-QFN | Microchip
MPN: PIC16F884-E/ML ✓ نشطPIC16F884-E/ML نظرة عامة
A microcontroller (MCU) is a single-chip computer containing a CPU, memory (Flash/RAM/EEPROM), and programmable peripherals. The PIC16F family is Microchip's mid-range 8-bit architecture offering a balance of code density, peripheral mix, and low power via nanoWatt technology. MCUs sit at the lowest tier of the embedded computing hierarchy: transistor -> logic gate -> CPU core -> microcontroller -> embedded system -> IoT/edge device. The PIC16F884 belongs to the 28/40/44-pin enhanced flash-based 8-bit CMOS family with nanowatt technology.
Key features include self-programmability for bootloader-style field updates, 10-bit A/D converter with up to 14 channels, enhanced capture/compare/PWM (ECCP) modules, multiple timers (Timer0/1/2), AUSART serial communication, MSSP for SPI/I2C, and a nanoWatt power management unit with multiple idle/sleep modes that drop quiescent current to the microamp range. The 44-QFN package exposes 36 I/O pins versus 22 in the smaller 28-pin variants, enabling direct drive of larger displays or sensor arrays.
The architecture uses a 14-bit instruction word and Harvard bus (separate program/data paths), giving deterministic single-cycle execution for most instructions except branches. The 20 MHz oscillator yields a 200 ns instruction cycle, sufficient for real-time control loops in motor, lighting, and consumer appliance subsystems. Brown-out reset (BOR), power-on reset (POR), and watchdog timer (WDT) with on-chip oscillator form the standard reliability suite.
Typical applications include home appliances (washing machines, microwave ovens, induction cooktops), industrial control panels, automotive body modules, lighting ballasts and dimmers, remote controls, low-end toys, instrumentation, and sensor hubs. The peripheral mix (ADC, PWM, UART, I2C/SPI) is well-suited to multi-signal acquisition systems.
When designing with this device, allocate the 35 instruction set carefully because 7 KB Flash is constrained for modern protocol stacks (e.g., full Modbus RTU). The 'E' suffix denotes the extended industrial temperature grade (-40C to +125C). Decoupling capacitors must be placed within 5 mm of the QFN ground paddle for thermal and noise integrity.
This page synthesizes distributor pricing, drop-in QFN-44 alternatives, and practical design notes not found in the manufacturer datasheet.
بدائل مباشرة لـ PIC16F884-E/ML — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع PIC16F884-E/ML (نفس عامل الشكل والبصمة) — يختلف في Operating Temperature, Package, Core Architecture, Timers, I/O Pins.
PIC16F884-I/ML
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC16F884T-I/ML
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16F882-I/ML
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC16F883-I/SS
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16F887-I/ML
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16F886-E/ML
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16F884-E/ML الحدود القصوى والخصائص الكهربائية
| Core Architecture | PIC 8-bit, Harvard bus, 14-bit instruction word |
| CPU Frequency | 20 MHz maximum |
| Instruction Cycle | 200 ns at 20 MHz |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data EEPROM | 256 bytes |
| Data RAM | 368 bytes |
| I/O Pins | 36 (multiplexed with peripherals) |
| A/D Converter | 10-bit, up to 14 channels |
| Timers | Timer0, Timer1, Timer2 |
| CCP/Enhanced CCP | Yes (ECCP) |
| Serial Interfaces | AUSART (UART), MSSP (SPI/I2C) |
| Operating Voltage (VDD) | 2.0 V to 5.5 V |
| Power-Saving Modes | nanoWatt (Idle, Sleep) |
| درجة حرارة التشغيل | -40C to +125C (E suffix, industrial extended) |
| العلبة | 44-pin QFN (8x8 mm) with exposed pad |
| نوع التركيب | Surface Mount |
| حالة RoHS | Compliant |
| Self-Programming | Yes (in-application via Flash) |
| Brown-Out Reset | Yes (BOR + PWRT) |
| Watchdog Timer | Yes (WDT with dedicated oscillator) |
تكوين أطراف PIC16F884-E/ML
| دبوس 1 | RA6/OSC2/CLKO — OSC2: crystal/oscillator output; CLKO: clock output; RA6: digital I/O |
| دبوس 2 | RA7/OSC1/CLKI — OSC1: crystal/oscillator input; CLKI: clock input; RA7: digital I/O |
| دبوس 3 | RE3/MCLR/VPP — Master Clear (reset) input / programming voltage; RE3: digital input only |
| دبوس 4 | RA0/AN0/ULPWU/C12IN0- — RA0: digital I/O; AN0: ADC channel 0; ULPWU: ultra-low-power wake-up |
| دبوس 5 | RA1/AN1/C12IN1- — RA1: digital I/O; AN1: ADC channel 1 |
| دبوس 6 | RA2/AN2/VREF-/CVREF/C2IN+ — RA2: digital I/O; AN2: ADC; VREF-: negative ADC reference |
| دبوس 7 | RA3/AN3/VREF+/C1IN+ — RA3: digital I/O; AN3: ADC; VREF+: positive ADC reference |
| دبوس 8 | RA4/T0CKI/C1OUT — RA4: digital I/O; T0CKI: Timer0 clock input; C1OUT: comparator 1 output |
| دبوس 9 | RA5/AN4/SS/C2OUT — RA5: digital I/O; AN4: ADC; SS: SPI slave select |
| دبوس 10 | VSS — Ground reference |
| دبوس 11 | VDD — Positive supply voltage (2.0 V to 5.5 V) |
| دبوس 12 | RB0/AN12/INT — RB0: digital I/O; AN12: ADC; INT: external interrupt |
| دبوس 13 | RB1/AN10/C12IN3-/P1C — RB1: digital I/O; AN10: ADC; P1C: PWM output |
| دبوس 14 | RB2/AN8/P1B — RB2: digital I/O; AN8: ADC; P1B: PWM output |
| دبوس 15 | RB3/AN9/PGM/C12IN2- — RB3: digital I/O; AN9: ADC; PGM: LVP programming enable |
| دبوس 16 | RB4/AN11/P1D — RB4: digital I/O; AN11: ADC; P1D: PWM output |
| دبوس 17 | RB5/AN13/T1G/P2B — RB5: digital I/O; AN13: ADC; T1G: Timer1 gate; P2B: PWM |
| دبوس 18 | RB6/PGC/T1OSI/T1CKI — RB6: digital I/O; PGC: ICSP clock; T1OSI: Timer1 osc input |
| دبوس 19 | RB7/PGD/T1OSO/CCP4 — RB7: digital I/O; PGD: ICSP data; CCP4: capture/compare/PWM |
| دبوس 20 | VSS — Ground reference (second VSS pin) |
| دبوس 21 | VDD — Positive supply (second VDD pin) |
| دبوس 22 | RC0/T1OSO/T13CKI — RC0: digital I/O; T1OSO: Timer1 oscillator output |
| دبوس 23 | RC1/T1OSI/CCP2 — RC1: digital I/O; T1OSI: Timer1 oscillator input; CCP2: PWM |
| دبوس 24 | RC2/CCP1/P2A — RC2: digital I/O; CCP1: capture/compare/PWM 1; P2A: PWM |
| دبوس 25 | RC3/SCK/SCL — RC3: digital I/O; SCK/SCL: SPI/I2C clock |
| دبوس 26 | RC4/SDI/SDA — RC4: digital I/O; SDI/SDA: SPI data in / I2C data |
| دبوس 27 | RC5/SDO — RC5: digital I/O; SDO: SPI data out |
| دبوس 28 | RC6/TX/CK — RC6: digital I/O; TX: UART transmit; CK: UART clock |
| دبوس 29 | RC7/RX/DT — RC7: digital I/O; RX: UART receive; DT: UART data |
| دبوس 30 | RD0 — RD0: digital I/O (Port D) |
| دبوس 31 | RD1 — RD1: digital I/O (Port D) |
| دبوس 32 | RD2 — RD2: digital I/O (Port D) |
| دبوس 33 | RD3 — RD3: digital I/O (Port D) |
| دبوس 34 | RD4 — RD4: digital I/O (Port D) |
| دبوس 35 | RD5/P1B — RD5: digital I/O; P1B: PWM output (Enhanced CCP) |
| دبوس 36 | RD6/P1C — RD6: digital I/O; P1C: PWM output |
| دبوس 37 | RD7/P1D — RD7: digital I/O; P1D: PWM output |
| دبوس 38 | VSS — Ground reference (third VSS pin) |
| دبوس 39 | VDD — Positive supply (third VDD pin) |
| دبوس 40 | RE0/RD — RE0: digital I/O; RD: parallel port read strobe (PSP) |
| دبوس 41 | RE1/WR — RE1: digital I/O; WR: parallel port write strobe (PSP) |
| دبوس 42 | RE2/CS — RE2: digital I/O; CS: parallel port chip select (PSP) |
| دبوس 43 | AVSS — Analog ground reference (tie to VSS) |
| دبوس 44 | AVDD — Analog positive supply (tie to VDD) |
التطبيقات النموذجية
PIC16F884-E/ML مناسب لـ 6 التطبيقs: Home Appliance Control, Industrial Sensor Hub, LED Lighting Controller, Automotive Body Module, Remote Control and HMI, Consumer Electronics and Toys.
Home Appliance Control
The PIC16F884-E/ML fits washing-machine, microwave, and induction-cooktop control boards because its 36 I/O pins directly drive 7-segment displays, keypad matrices, relay coils, and triac zero-cross circuits. The 7 KB Flash holds full state-machine code including sensor calibration, fault handling, and BLE/UART modules. The 10-bit ADC with 14 channels reads temperature, humidity, and load-current feedback; the ECCP module generates PWM for motor speed and inverter control. nanoWatt sleep modes reduce standby to microamp range for energy-star compliance.
موصى به
Industrial Sensor Hub
The PIC16F884-E/ML suits multi-sensor industrial nodes because its AUSART plus MSSP (SPI/I2C) bus controllers interface simultaneously with digital temperature sensors, pressure transducers, and accelerometers. The 10-bit ADC digitizes analog channels from 4-20 mA loops or thermistor bridges. With -40C to +125C operation, the E-grade survives factory-floor thermal stress. Self-programming Flash allows secure over-the-air firmware updates via Modbus RTU on RS-485. The 256-byte EEPROM stores calibration constants and node IDs without external storage.
موصى به
LED Lighting Controller
The PIC16F884-E/ML drives LED ballasts and dimmers via its ECCP PWM module, which generates frequency-adjustable, duty-cycle-controlled PWM with hardware dead-band control for half-bridge drivers. The 36 I/O pins drive multiple channels of constant-current LED drivers (e.g., TLC5940) in SPI daisy-chain or directly switch MOSFETs with PWM. The 10-bit ADC reads ambient light sensors for closed-loop dimming. Low-power nanoWatt modes enable battery-powered wireless lighting controls.
موصى به
Automotive Body Module
The PIC16F884-E/ML powers body-control modules for door locks, window lifters, mirror adjusters, and interior lighting. Its -40C to +125C extended temperature range meets AEC-Q100 Grade 1 zones (cabin/body), and its ECCP with hardware PWM simplifies driving brushed DC motors via H-bridges. LIN bus connectivity is implemented via AUSART plus an external LIN transceiver. The 256-byte EEPROM retains learned positions and fault logs even when battery is disconnected.
موصى به
Remote Control and HMI
The PIC16F884-E/ML is well-suited to IR/RF remote controls and small human-machine interfaces because its 36 I/O pins scan 6x6 keypad matrices and drive LCDs or OLEDs via SPI. The AUSART links to RF transceivers (e.g., nRF24L01) for wireless control, while nanoWatt sleep modes extend battery life to years on coin cells. The 7 KB Flash holds complex gesture-recognition or voice-command firmware with on-the-fly updates via bootloader.
موصى به
Consumer Electronics and Toys
The PIC16F884-E/ML drives cost-sensitive consumer devices, electronic toys, and educational kits because its sub-$3 unit price at 1k quantities keeps BOM costs low while delivering 5 MIPS performance. The 7 KB Flash supports interactive sound playback, multi-channel servo control for robotics, and I2C/SPI sensor expansion. The 36 I/O pins drive RGB LED matrices, haptic feedback motors, and small TFT displays. Self-programming Flash enables end-user firmware updates via USB/UART bridges.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PIC16F884-E/ML — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | PIC16F884-I/ML | PIC16F884T-I/ML | PIC16F882-I/ML | PIC16F883-I/SS | PIC16F887-I/ML | PIC16F886-E/ML |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-QFN (8x8) | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same |
| Flash Memory | 7 KB | 7 KB | 7 KB | 3.5 KB | 4 KB | 14 KB | 14 KB |
| Data RAM | 368 bytes | 368 bytes | 368 bytes | 128 bytes | 192 bytes | 368 bytes | 368 bytes |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 128 bytes | 256 bytes | 256 bytes | 256 bytes |
| I/O Pins | 36 | 36 | 36 | 24 | 24-36 | 36 | 28 |
| CPU Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Temperature Grade | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +125C (E) |
| Price (qty 1, USD) | 3.92 | approx 3.50 | approx 3.50 | approx 3.00 | approx 3.20 | approx 4.20 | approx 4.10 |
أبرز الفروقات
- Highest Flash memory in mid-range PIC16F88x family with E temperature grade (مقابلPIC16F883-I/SS)
- Most I/O pins available in 44-QFN package for direct sensor/relay drive (مقابلPIC16F882-I/ML)
- Lower price than higher-memory siblings while keeping same 44-QFN footprint (مقابلPIC16F887-I/ML)
- E temperature grade in 44-QFN package with 36 I/O and ECCP (مقابلPIC16F886-E/ML)
ملاحظات التصميم
The 44-QFN (8x8 mm) package has a central exposed thermal pad (EP) on its underside that must be soldered to a PCB land of at least the same dimensions and tied to a clean ground plane. Use a via array (typically 9 to 25 vias, 0.3 mm drill, 0.5 mm pitch) under the EP to carry heat into inner ground planes and reduce junction-to-ambient thermal resistance. Missing or incomplete EP soldering raises junction temperature by 30C or more, potentially causing thermal-shutdown-like behavior under high CPU load.
Place a 100 nF decoupling capacitor within 3 mm of each VDD pin (the PIC16F884 has three VDD pins at 11, 21, 39) and a single 10 uF bulk capacitor near the package. The AVDD and AVSS pins (44 and 43) supply the ADC core - isolate AVDD with a ferrite bead from VDD, and decouple AVSS to AGND with 100 nF + 10 uF. Failure to isolate analog supply increases ADC noise by 2-4 LSB at 10-bit resolution, degrading sensor readings.
MCLR (pin 3) is a mandatory reset input. Tie it to VDD through a 10 kohm pull-up resistor and add a 100 nF capacitor to ground for noise immunity. Floating MCLR causes random resets in electrically noisy environments (relay boards, motor drives). When using the internal oscillator instead of an external crystal, configure the CONFIG register FOSC bits correctly and disconnect OSC1/OSC2 - otherwise the unconnected oscillator pins pick up EMI and destabilize the system clock.
The MSSP peripheral for I2C communication requires external pull-up resistors on SDA/SCL lines (typically 4.7 kohm at 100 kHz, 2.2 kohm at 400 kHz). The PIC16F884's I/O pins are not true open-drain - configure them as open-drain via the ODCON register when using I2C mode. For SPI, keep trace lengths under 50 mm and route the SCK signal away from analog inputs to avoid clock-feedthrough into ADC readings.
معلومات الامتثال
RoHS/REACH compliant per Microchip product page. Not AEC-Q100 qualified, but the -40C to +125C extended temperature range supports many AEC-Q100 Grade 0/1 use cases indirectly. Microchip maintains QS-9000 quality certification for the PIC16F family.
