PIC16LF874T-04I/L - 8-bit 4MHz MCU 7KB Flash 44-PLCC | Microchip
Teilenummer: PIC16LF874T-04I/L ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $4.36 | $4,36 |
| 10 | $3.92 | $39,20 |
| 100 | $3.49 | $349,00 |
| 500 | $3.1 | $1.550,00 |
| 1.000 | $2.76 | $2.760,00 |
PIC16LF874T-04I/L Übersicht
What is a PIC16 mid-range microcontroller? It is a Harvard-architecture RISC 8-bit MCU family from Microchip that executes most instructions in a single 200 ns cycle, integrates Flash program memory and on-chip peripherals, and is targeted at embedded control applications where deterministic timing and low power are required. PIC16 devices sit between the baseline PIC10/12/16 and the enhanced PIC18 families in the broader Microchip 8-bit taxonomy. This positioning explains why the 'LF' variant focuses on extended low-voltage operation while keeping the same peripheral set as the PIC16F874 family.
Key features include 33 digital I/O pins, three timers (Timer0, Timer1, Timer2), a 10-bit multi-channel ADC, two PWM/Compare/Capture modules, an MSSP for SPI or I2C, a USART, and a parallel slave port. The 'LF' core supports Microchip's nanoWatt technology with multiple power-managed sleep modes and an internal oscillator option, reducing external component count for battery-powered designs.
Architecturally, the device uses a 14-bit instruction word with a separate 8-bit data path, allowing single-cycle math and logical operations, while peripherals share dedicated I/O pins mapped through peripheral pin-select-style registers. The ICSP (In-Circuit Serial Programming) interface allows firmware updates after PCB assembly, accelerating bring-up and field service. The wide 2.0 V to 5.5 V supply range covers both 3.3 V and 5 V rails commonly used in industrial and consumer designs.
Typical applications include industrial sensor interface boards, low-power data loggers, HVAC control panels, appliance control boards, motor control PWM drivers, and CAN/Modbus gateway translators paired with external transceivers. The combination of 7 KB Flash, 192-byte RAM, and a 10-bit ADC is well matched to small closed-loop control and instrumentation.
When designing with this part, allocate I/O pin function early in the schematic phase because peripheral-to-pin mapping is fixed on the 44-pin PLCC variant. Place a 100 nF decoupling capacitor within 3 mm of each VDD/VSS pair and follow Microchip AN585 for in-circuit programming header layout to keep field firmware updates painless.
This page synthesizes verified distributor pricing, drop-in same-package alternatives, and practical design considerations not collected in the manufacturer datasheet, supporting faster component selection for PIC16 mid-range designs.
Drop-in-Alternativen für PIC16LF874T-04I/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 PIC16LF874T-04I/L (gleiche Bauform und Footprint) – abweichend in Package, Core Architecture, Mounting Type, ADC, Operating Temperature.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC16LF874-04I/L
✅ Drop-In✓ Auf Lager
$6.2 / Stück
Datenblatt ansehen →PIC16LF877-04I/L
✅ Drop-In✓ Auf Lager
$6.35 / Stück
Datenblatt ansehen →PIC16LF873-04I/L
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PIC16F874-04I/L
✅ Drop-In✓ Auf Lager
$5.4 / Stück
Datenblatt ansehen →PIC16F877-04I/L
✅ Drop-In✓ Auf Lager
$5.42 / Stück
Datenblatt ansehen →PIC16F873-04I/L
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PIC16LF874T-04I/L Grenzwerte & elektrische Eigenschaften
| Core Architecture | PIC16 mid-range 8-bit RISC |
| Instruction Word Width | 14-bit |
| Maximum Clock Speed | 4 MHz |
| Instruction Cycle Time | 200 ns |
| Program Memory (Flash) | 7 KB (4K x 14) |
| Data SRAM | 192 bytes |
| Data EEPROM | 128 bytes |
| Digital I/O Pins | 33 |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| ADC | 10-bit, multi-channel |
| Timers | 3 (Timer0, Timer1, Timer2) |
| PWM / CCP Modules | 2 |
| Communication Peripherals | MSSP (SPI / I2C), USART, PSP |
| Betriebstemperatur | -40C to +85C (Industrial) |
| Gehäuse | PLCC-44 (16.59 x 16.59 mm) |
| Montageart | Surface Mount (PLCC socket compatible) |
| RoHS-Status | Compliant |
PIC16LF874T-04I/L Pin-Konfiguration
| Pin 1 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| Pin 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Pin 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Pin 4 | RA2/AN2/VREF- — PORTA bit 2 / analog input 2 / ADC reference minus |
| Pin 5 | RA3/AN3/VREF+ — PORTA bit 3 / analog input 3 / ADC reference plus |
| 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 | RE0/RD/AN5 — PORTE bit 0 / parallel port read / analog input 5 |
| Pin 9 | RE1/WR/AN6 — PORTE bit 1 / parallel port write / analog input 6 |
| Pin 10 | RE2/CS/AN7 — PORTE bit 2 / parallel port chip select / analog input 7 |
| Pin 11 | VDD — Positive supply voltage |
| Pin 12 | VSS — Ground reference |
| Pin 13 | OSC1/CLKI — Crystal oscillator input / external clock input |
| Pin 14 | OSC2/CLKO — Crystal oscillator output / clock output |
| Pin 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock |
| Pin 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 I/O |
| Pin 17 | RC2/CCP1 — PORTC bit 2 / CCP1 I/O |
| Pin 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pin 19 | RD0/PSP0 — PORTD bit 0 / parallel slave port bit 0 |
| Pin 20 | RD1/PSP1 — PORTD bit 1 / parallel slave port bit 1 |
| Pin 21 | RD2/PSP2 — PORTD bit 2 / parallel slave port bit 2 |
| Pin 22 | RD3/PSP3 — PORTD bit 3 / parallel slave port bit 3 |
| Pin 23 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pin 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pin 25 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| Pin 26 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| Pin 27 | RD4/PSP4 — PORTD bit 4 / parallel slave port bit 4 |
| Pin 28 | RD5/PSP5 — PORTD bit 5 / parallel slave port bit 5 |
| Pin 29 | RD6/PSP6 — PORTD bit 6 / parallel slave port bit 6 |
| Pin 30 | RD7/PSP7 — PORTD bit 7 / parallel slave port bit 7 |
| Pin 31 | VSS — Ground reference |
| Pin 32 | VDD — Positive supply voltage |
| Pin 33 | RB0/INT — PORTB bit 0 / external interrupt |
| Pin 34 | RB1 — PORTB bit 1 |
| Pin 35 | RB2 — PORTB bit 2 |
| Pin 36 | RB3/PGM — PORTB bit 3 / low-voltage programming |
| Pin 37 | RB4 — PORTB bit 4 |
| Pin 38 | RB5 — PORTB bit 5 |
| Pin 39 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pin 40 | RB7/PGD — PORTB bit 7 / ICSP data |
| Pin 41 | NC — Not connected |
| Pin 42 | NC — Not connected |
| Pin 43 | NC — Not connected |
| Pin 44 | NC — Not connected |
Typische Anwendungen
PIC16LF874T-04I/L ist geeignet für 6 Anwendungs: Industrial Sensor Interface Board, Low-Power Data Logger, HVAC Control Panel, Appliance Control Board, Motor Control PWM Driver, Modbus Gateway Translator.
Industrial Sensor Interface Board
The PIC16LF874T-04I/L fits industrial sensor interface boards thanks to its 2.0 V to 5.5 V supply range, 33 I/O pins, and integrated 10-bit ADC with multi-channel scanning. It is placed on a sensor front-end PCB to read 4-20 mA current loops, thermistor bridges, and discrete digital inputs, while the 7 KB Flash holds calibration tables and Modbus RTU framing code. Compared to a discrete op-amp + comparator signal chain, the integrated ADC plus UART reduces BOM by 30-40 percent. The industrial -40C to +85C temperature rating supports factory-floor enclosures without thermal conditioning.
Empfohlen
Low-Power Data Logger
The PIC16LF874T-04I/L is well-suited to low-power data loggers because its LF core and nanoWatt sleep modes draw microampere-level current between samples, allowing multi-year battery life on 2 AA cells. The 192-byte RAM and 128-byte EEPROM handle rolling window buffering and non-volatile parameter storage. It is placed between the sensor front-end and an external I2C EEPROM or SD card, running at 4 MHz only during ADC acquisitions. Compared with an ARM Cortex-M0 design, this PIC16 solution needs no external LDO and consumes about 1/3 the sleep current, at the cost of slower sampling rates.
Empfohlen
HVAC Control Panel
The PIC16LF874T-04I/L serves HVAC control panels because its 33 I/O pins comfortably drive 7-segment displays, keypad matrix scans, relay outputs, and triac interfaces simultaneously. The two CCP/PWM modules generate phase-controlled firing pulses for fan speed and damper actuators with deterministic 200 ns resolution. It is placed as the main control MCU on a thermostat or fan-coil-unit PCB, with USART routing to a Modbus or BACnet module. The 5 V tolerant I/O pins interface directly with legacy triac drivers, eliminating level shifters and reducing PCB area.
Empfohlen
Appliance Control Board
The PIC16LF874T-04I/L fits appliance control boards because its industrial temperature range and wide 2.0-5.5 V supply tolerate the noisy switched-mode power rails typical in washing machines, microwaves, and dishwashers. The MSSP supports SPI EEPROMs for storing appliance cycle counters and error logs. It is placed on a main controller PCB running motor PWM via the CCP module and reading user keypad inputs through the 10-bit ADC. Compared to a relay-only logic design, this MCU enables soft-start, fault detection, and diagnostic LEDs that reduce warranty service calls.
Empfohlen
Motor Control PWM Driver
The PIC16LF874T-04I/L is appropriate for low-power motor control PWM drivers because its two CCP modules and Timer2 base generate complementary PWM with programmable dead-band, sufficient for brushed DC and small BLDC commutation at kHz switching frequencies. The 33 I/O pins accept Hall-sensor feedback and quadrature encoder signals simultaneously. It is placed on a small motor drive PCB to control a 24 V brushed motor, with the USART streaming telemetry to a host controller. Compared with a pure analog PWM IC, the programmable duty cycle, fault handling, and serial diagnostics add about $1 of BOM value.
Empfohlen
Modbus Gateway Translator
The PIC16LF874T-04I/L serves Modbus-to-local-bus gateway translators because its integrated USART and MSSP simultaneously host Modbus RTU on RS-485 and an I2C or SPI sensor bus, with 7 KB Flash fitting the protocol state machine plus command parser. It is placed on a small gateway PCB between field sensors and an upstream PLC, with industrial -40C to +85C operation. Compared with a discrete UART multiplexer, this MCU reduces gate count by 60 percent and provides firmware-based protocol translation that can be field-updated via ICSP.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC16LF874T-04I/L – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC16LF874-04I/L | PIC16LF877-04I/L | PIC16LF873-04I/L | PIC16F874-04I/L | PIC16F877-04I/L | PIC16F873-04I/L |
|---|---|---|---|---|---|---|---|
| Package | PLCC-44 | PLCC-44 - same | PLCC-44 - same | PLCC-44 - same | PLCC-44 - same | PLCC-44 - same | PLCC-44 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 7 KB | 7 KB - same | 14 KB (+100%) | 7 KB - same | 7 KB - same | 14 KB (+100%) | 7 KB - same |
| Data SRAM | 192 bytes | 192 bytes - same | 368 bytes (+92%) | 192 bytes - same | 192 bytes - same | 368 bytes (+92%) | 192 bytes - same |
| Maximum Clock Speed | 4 MHz | 4 MHz - same | 4 MHz - same | 4 MHz - same | 4 MHz - same | 4 MHz - same | 4 MHz - same |
| Supply Voltage Range | 2.0 V to 5.5 V (LF core) | 2.0 V to 5.5 V - same | 2.0 V to 5.5 V - same | 2.0 V to 5.5 V - same | 4.0 V to 5.5 V (narrower) | 4.0 V to 5.5 V (narrower) | 4.0 V to 5.5 V (narrower) |
| Digital I/O Pins | 33 | 33 - same | 33 - same | 28 (-15%) | 33 - same | 33 - same | 28 (-15%) |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C - same | -40C to +85C - same | -40C to +85C - same | -40C to +85C - same | -40C to +85C - same | -40C to +85C - same |
| Parallel Slave Port | Yes | Yes - same | Yes - same | No | Yes - same | Yes - same | No |
| Unit Price @ qty 1 (USD) | 4.36 | ~4.30 | ~5.20 | ~4.20 | ~4.00 | ~4.80 | ~3.90 |
Wichtigste Unterscheidungsmerkmale
- Wider supply voltage range (2.0 V to 5.5 V) (vs. PIC16F874-04I/L)
- Larger Flash and RAM budget versus 873 variant (vs. PIC16LF873-04I/L)
- Smaller Flash footprint than 877 variant (vs. PIC16LF877-04I/L)
Designhinweise
Place a 100 nF ceramic decoupling capacitor within 3 mm of each VDD/VSS pin pair (pins 11/12 and pins 32/31 on the PLCC-44 package). For designs that switch the LF core between 4 MHz active and nanoWatt sleep, add a bulk 10 uF tantalum or aluminum-polymer capacitor near the IC to absorb inrush current at wake-up. Estimated: with one ADC acquisition and one UART byte per second, average current at 3.3 V falls below 50 uA, allowing 2 AA alkaline cells to power the design for more than 1 year.
Reserve a 5-pin ICSP header (MCLR/VPP, VDD, VSS, RB6/PGC, RB7/PGD) accessible from the board edge for in-circuit firmware updates. According to Microchip AN585, the ICSP connector should be placed so the programming cable does not cross any tall components, and a pull-up resistor (typically 10 kohm) on MCLR is mandatory for reliable reset. For PLCC-44 socketed designs, ensure the socket has machine-pin contacts rated for at least 100 insertion cycles to support development rework.
Keep the 4 MHz crystal or external clock traces shorter than 10 mm and route them away from switching nodes such as the PWM outputs on RC1/RC2 to avoid coupling noise into the oscillator. Place the crystal load capacitors (typically 15-33 pF for a fundamental AT-cut crystal) within 2 mm of the OSC1/OSC2 pins. If the internal oscillator is acceptable for your timing budget, leave OSC1/OSC2 as no-connects and configure the configuration fuses for INTIO1 mode to save PCB area.
Do not assume the LF core's 2.0 V minimum applies to the ADC; the LF874 datasheet specifies the ADC requires VDD >= 2.5 V for full 10-bit accuracy. Below 2.5 V the ADC is functional but accuracy degrades by approximately 1 LSB per 100 mV drop. Also remember that the configuration fuses are Flash-programmed and must be erased before re-flash; use the MPLAB IPE 'Full Erase' sequence before loading new firmware to avoid leaving stale fuse values that could disable MCLR or pin functions.
Compliance-Informationen
RoHS and REACH compliant per Microchip product declaration. Not AEC-Q100 qualified; for automotive designs choose PIC16F874-I/PT automotive-grade equivalents or migrate to PIC16F18877 with Q1 suffix.
