PIC16F874-04E/L - 4MHz 8-bit Flash MCU 7KB | 44-PLCC | Microchip
Teilenummer: PIC16F874-04E/L ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $9.5 | $9,50 |
| 10 | $8.55 | $85,50 |
| 100 | $7.62 | $762,00 |
| 500 | $6.84 | $3.420,00 |
| 1.000 | $6.1 | $6.100,00 |
| 3.000 | $5.42 | $16.260,00 |
PIC16F874-04E/L Übersicht
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, working RAM, and a rich set of programmable peripherals. PIC16F-series MCUs from Microchip use a RISC-based Harvard architecture with only 35 single-word instructions, making them well suited to deterministic, low-latency embedded control. As members of the broader 8-bit MCU family hierarchy (PIC16 -> 8-bit PIC -> microcontroller -> embedded computing -> semiconductor), they balance code density, peripheral integration, and ultra-low power consumption.
Key features include 33 digital I/O lines, three timer/counter modules, a 10-bit multi-channel analog-to-digital converter, and hardware serial interfaces for I2C, SPI, and UART/USART. The device supports 14 hardware interrupts and 2 capture/compare/PWM modules, providing enough flexibility for motor control, instrumentation, and sensor interfacing. The enhanced Flash memory enables in-circuit serial programming (ICSP) and on-chip debug capability, while the EEPROM supports non-volatile data storage for configuration and calibration parameters.
Architecturally, the PIC16F874 uses a 14-bit instruction word with an 8-bit data path and an integrated brown-out reset, watchdog timer, and power-on reset supervisor. The -04 speed grade (4 MHz maximum oscillator input) and the -E extended-industrial temperature suffix (-40C to +125C) make it suitable for harsh-environment embedded designs. In-system programmability allows field firmware updates without removing the MCU from the application PCB.
Typical applications include automotive body and chassis ECUs, industrial control panels, instrumentation, sensor conditioning nodes, low-end motor control, and small appliance controllers. The wide peripheral set lets one part serve both as a communication gateway and a local control node.
When designing with the PIC16F874-04E/L, observe the supply voltage range of 4.0 V to 5.5 V, place the decoupling capacitor as close as possible to VDD/SS pins, and configure the MCLR pin with the recommended pull-up network. Verify that oscillator layout follows Microchip guidance to avoid timing drift.
This page synthesizes distributor pricing, drop-in same-package alternatives, and design considerations not found in the manufacturer datasheet alone.
Drop-in-Alternativen für PIC16F874-04E/L – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit PIC16F874-04E/L (gleiche Bauform und Footprint) – abweichend in Package, Timers, Core Architecture, Instruction Cycle Time, Maximum Clock Frequency.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC16F874T-04E/L
✅ Drop-In✓ Auf Lager
$7.25 / Stück
Datenblatt ansehen →PIC16F874-04E/PQ
✅ Drop-In✓ Auf Lager
$5.1 / Stück
Datenblatt ansehen →PIC16F874-04/L
✅ Drop-In✓ Auf Lager
$6.85 / Stück
Datenblatt ansehen →PIC16F874-20/L
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PIC16F874-20I/L
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PIC16F874-20E/L
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
PIC16F874-04E/L Grenzwerte & elektrische Eigenschaften
| Family | PIC16F |
| Core | 8-bit PIC RISC |
| Maximale Taktfrequenz | 4 MHz |
| Instruction Cycle Time | 200 ns |
| Program Memory | 7 KB Flash (4K x 14) |
| Data RAM | 192 bytes |
| EEPROM | 128 bytes |
| I/O Pins | 33 |
| Versorgungsspannung | 4.0 V to 5.5 V |
| ADC | 10-bit, 8 channels |
| Timers | 3 (Timer0, Timer1, Timer2) |
| CCP Modules | 2 |
| Serial Interfaces | I2C, SPI, UART/USART |
| Gehäuse | 44-PLCC (16.59x16.59 mm) |
| Temperature Grade | Extended Industrial / Automotive (E suffix) |
| Betriebstemperatur | -40C to +125C |
| Montageart | Surface Mount (J-Lead) |
| RoHS-Status | Compliant |
PIC16F874-04E/L Pin-Konfiguration
| Pin 1 | MCLR/VPP — Master Clear (Reset) input / ICSP programming voltage |
| Pin 2 | RA0/AN0 — PORTA bit 0 / Analog input channel 0 |
| Pin 3 | RA1/AN1 — PORTA bit 1 / Analog input channel 1 |
| Pin 4 | RA2/AN2/VREF- — PORTA bit 2 / Analog input 2 / ADC VREF- |
| Pin 5 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input 3 / ADC VREF+ |
| Pin 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pin 7 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SPI slave select |
| Pin 8 | OSC1/CLKIN — Oscillator input / external clock input |
| Pin 9 | OSC2/CLKOUT — Oscillator output / clock out |
| Pin 10 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / T1 clock in |
| Pin 11 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Pin 12 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| Pin 13 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pin 14 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pin 15 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pin 16 | RC6/TX/CK — PORTC bit 6 / UART TX / I2C clock (sync) |
| Pin 17 | RC7/RX/DT — PORTC bit 7 / UART RX / I2C data (sync) |
| Pin 18 | VSS — Ground reference |
| Pin 19 | VDD — Positive supply (4.0V to 5.5V) |
| Pin 20 | RB0/INT — PORTB bit 0 / External interrupt |
| Pin 21 | RB1 — PORTB bit 1 |
| Pin 22 | RB2 — PORTB bit 2 |
| Pin 23 | RB3/PGM — PORTB bit 3 / ICSP LVP enable |
| Pin 24 | RB4 — PORTB bit 4 / Interrupt-on-change |
| Pin 25 | RB5 — PORTB bit 5 / Interrupt-on-change |
| Pin 26 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pin 27 | RB7/PGD — PORTB bit 7 / ICSP data |
| Pin 28 | RD0/PSP0 — PORTD bit 0 / Parallel Slave Port bit 0 |
| Pin 29 | RD1/PSP1 — PORTD bit 1 / PSP bit 1 |
| Pin 30 | RD2/PSP2 — PORTD bit 2 / PSP bit 2 |
| Pin 31 | RD3/PSP3 — PORTD bit 3 / PSP bit 3 |
| Pin 32 | RD4/PSP4 — PORTD bit 4 / PSP bit 4 |
| Pin 33 | RD5/PSP5 — PORTD bit 5 / PSP bit 5 |
| Pin 34 | RD6/PSP6 — PORTD bit 6 / PSP bit 6 |
| Pin 35 | RD7/PSP7 — PORTD bit 7 / PSP bit 7 |
| Pin 36 | RE0/RD/AN5 — PORTE bit 0 / Read control / Analog input 5 |
| Pin 37 | RE1/WR/AN6 — PORTE bit 1 / Write control / Analog input 6 |
| Pin 38 | RE2/CS/AN7 — PORTE bit 2 / Chip select / Analog input 7 |
| Pin 39 | VSS — Ground (digital) |
| Pin 40 | VDD — Positive supply |
| Pin 41 | NC — Not connected (per datasheet) |
| Pin 42 | NC — Not connected (per datasheet) |
| Pin 43 | NC — Not connected (per datasheet) |
| Pin 44 | NC — Not connected (per datasheet) |
Typische Anwendungen
PIC16F874-04E/L ist geeignet für 6 Anwendungs: Automotive Body and Chassis ECU, Industrial Sensor Conditioning Node, Small Appliance Controller, Motor Control and PWM Driver, Instrumentation and Data Logger Front End, Low-End Communication Gateway.
Automotive Body and Chassis ECU
The PIC16F874-04E/L's -40C to +125C extended industrial/automotive temperature grade and 7 KB Flash make it well-suited for body and chassis electronic control units where reliability across thermal stress is critical. Its 33 I/O lines drive lamps, relays, and switch-matrix interfaces, while the 10-bit ADC reads battery voltage, thermistors, and sensor inputs. The hardware I2C/SPI buses link to peripheral drivers and the UART serves diagnostic protocols such as ISO 9141 or K-Line. The 4 MHz clock is sufficient for body-control sampling rates in the low kHz range, and the 128-byte EEPROM stores configuration, calibration, and fault history across battery-disconnect events. Microchip's automotive-grade screening (denoted by the -E suffix) and brown-out reset together support the voltage-transient environment of an automotive 12 V rail.
Empfohlen
Industrial Sensor Conditioning Node
The PIC16F874-04E/L provides 8 channels of 10-bit ADC, three timers, and a hardware UART that together form a compact analog sensor-conditioning node for industrial instrumentation. Its 4 MHz clock samples RTDs, thermocouples (via external front-end), and 4-20 mA loops at rates that satisfy SCADA update intervals. The 192-byte SRAM is adequate for short averaging buffers, while the 128-byte EEPROM retains calibration constants across power cycles. The extended -40C to +125C temperature rating supports placement in unconditioned control cabinets and outdoor enclosures. The 33 I/O pins drive indicator LEDs, optocouplers, and HMI keypads, reducing the need for additional glue logic. Compared to a discrete op-amp solution, the integrated ADC and UART simplify BOM and lower total cost for moderate-accuracy measurements.
Empfohlen
Small Appliance Controller
The PIC16F874-04E/L's combination of 7 KB Flash, 33 I/O lines, and CCP-based PWM makes it a strong candidate for small home appliances such as washing machines, dishwashers, and coffee makers. The two CCP modules generate PWM for motor speed control and triac firing, while the 10-bit ADC monitors temperature, water level, and motor current. The hardware I2C connects to character-LCD or segment displays, and the UART supports service-tool diagnostics. Brown-out reset and the watchdog timer ensure recovery from line-voltage transients. The Flash-based in-circuit programming allows field firmware updates via the appliance service port without removing the controller board. The -E temperature grade covers the thermal range of pump and compressor housings.
Empfohlen
Motor Control and PWM Driver
The PIC16F874-04E/L delivers two CCP modules that produce PWM outputs suitable for DC and stepper motor control, while the 10-bit ADC closes the current/voltage feedback loop at low to medium switching frequencies. The 33 digital I/O lines interface to discrete MOSFET drivers, encoder inputs, and direction-control logic. At 4 MHz instruction rate, the device computes duty cycles and PID terms fast enough for sub-kW brushless-DC and brushed-DC motor commutation. The -E extended temperature grade supports integration near motors where ambient can exceed 85C. EEPROM stores motor tuning parameters, and ICSP firmware updates let OEMs iterate control algorithms without re-flashing in production.
Empfohlen
Instrumentation and Data Logger Front End
The PIC16F874-04E/L functions as a low-power front-end microcontroller for portable instrumentation, where its 7 KB Flash hosts the calibration and acquisition firmware, and its 128-byte EEPROM stores unit-specific constants. The 10-bit ADC digitizes thermocouple, strain-gauge, or pressure-sensor inputs at sub-1 kHz rates; the UART streams data to a host PC or Bluetooth module. The PIC16F874-04E/L's low power consumption (under 2 mA active at 4 MHz, 5 V) supports battery-powered operation, and brown-out reset protects against weak-cell data corruption. Compared with a fully integrated data-acquisition ASIC, this MCU approach offers flexible firmware-defined measurement sequences.
Empfohlen
Low-End Communication Gateway
The PIC16F874-04E/L serves as a simple bridging microcontroller between legacy serial peripherals and a host system, using its MSSP for I2C/SPI sensors and its UART for RS-232/TTL links. The 33 I/O lines manage chip-select lines and indicator LEDs, while the 192-byte SRAM buffers incoming protocol frames. Brown-out reset ensures clean recovery from supply glitches common in field-deployed gateway hardware. The -E temperature grade supports outdoor enclosures and industrial cabinets. The combination of three hardware timers supports protocol timeouts and watchdog duties, and the 7 KB Flash accommodates lightweight Modbus-RTU or vendor-specific translation firmware.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC16F874-04E/L – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC16F874T-04E/L | PIC16F874-04E/PQ | PIC16F874-04/L | PIC16F874-20/L | PIC16F874-20I/L | PIC16F874-20E/L |
|---|---|---|---|---|---|---|---|
| Package | 44-PLCC (16.59x16.59) | 44-PLCC - same | 44-PLCC (PQ) - same | 44-PLCC - same | 44-PLCC - same | 44-PLCC - same | 44-PLCC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Max Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz | 20 MHz | 20 MHz |
| Flash Program Memory | 7 KB (4K x 14) | 7 KB | 7 KB | 7 KB | 7 KB | 7 KB | 7 KB |
| Operating Temperature | -40C to +125C (-E grade) | -40C to +125C | -40C to +125C | 0C to +70C (commercial) | 0C to +70C (commercial) | -40C to +85C (industrial) | -40C to +125C (extended) |
| Data RAM | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 | 33 |
| EEPROM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Lifecycle Status | Active | Active | Active | Active | Active | Active | Active |
Wichtigste Unterscheidungsmerkmale
- Extended -E temperature grade qualified for automotive and harsh-environment applications (vs. PIC16F874-04/L (commercial))
- Automotive-grade temperature screening denoted by the -E suffix (vs. PIC16F874-20I/L (industrial grade))
- 4 MHz speed grade optimized for low-power and deterministic control loops (vs. PIC16F874-20/L (20 MHz))
Designhinweise
Estimated: Decouple VDD with a 100 nF ceramic capacitor placed within 5 mm of the package pin pair (pins 19 and 11 on the 44-PLCC). Microchip recommends adding a bulk tantalum or aluminum 10 uF cap if the supply impedance is high. The brown-out reset and power-on reset must be considered when designing the supply ramp; a VDD rise time slower than 100 ms can trigger BOR retries that affect startup behavior.
Keep the MCLR pin (pin 1) pulled high through a 10 kohm resistor and a 100 nF decoupling cap to ground; this prevents spurious resets. Place the ICSP connector (PGC/PGD on pins 26/27) such that the programming header does not introduce stray capacitance on those lines, and route the oscillator traces short and surrounded by a ground guard ring to minimize EMI susceptibility on OSC1/OSC2 (pins 8/9).
Do not exceed 5.5 V on VDD; the part has no internal regulator and a transient above the absolute-maximum rating of 7 V will permanently damage it. Configure the watchdog timer (WDT) in long-life firmware to avoid endless resets. The MSSP peripheral must be initialized with the correct mode bits (I2C vs SPI) before use; a common bug is leaving the SSPM bits at POR defaults.
Estimated: At 4 MHz and 5 V, active current is about 2 mA, dissipating roughly 10 mW - well below the thermal limit of the 44-PLCC package. The -E temperature grade (-40C to +125C) is the binding constraint for placement near heat sources such as power resistors or motor housings. Designers must verify that ambient temperature inside the enclosure stays within the operating range.
Compliance-Informationen
RoHS-compliant per Microchip product page; -E temperature grade is automotive-screened but not formally AEC-Q100 qualified for the PIC16F874 family per public documentation; consult Microchip for automotive PPAP documentation
