PIC16LF874T-04/L - 8-Bit 4MHz 7KB Flash MCU | Microchip
Teilenummer: PIC16LF874T-04/L ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $3.95 | $3,95 |
| 10 | $3.55 | $35,50 |
| 100 | $3.18 | $318,00 |
| 500 | $2.84 | $1.420,00 |
| 1.000 | $2.49 | $2.490,00 |
PIC16LF874T-04/L Übersicht
An 8-bit microcontroller (MCU) is a self-contained computing element that integrates a CPU, non-volatile program memory, volatile working RAM, peripheral set, and I/O onto a single silicon die. In the broader taxonomy, MCUs sit between discrete logic and full microprocessors: they trade raw computation throughput for deterministic real-time control, low power draw, and small board area. The PIC16F family is one of the longest-running mid-range 8-bit architectures from Microchip and is widely used in embedded control where cost, footprint, and deterministic interrupt latency outweigh the need for 32-bit performance.
Key specifications of the PIC16LF874T-04/L include 33 digital I/O pins, an operating voltage range of 2.0 V to 5.5 V (the LF prefix denotes the low-voltage variant), a commercial operating temperature grade of 0 °C to +70 °C, and integrated peripherals such as a 10-bit ADC, capture/compare/PWM (CCP) modules, USART, SPI, and I2C. The device supports in-circuit debugging via the ICSP interface.
The 'LF' prefix indicates the wide-voltage CMOS process, which lets the part run from a single lithium cell or 3.3 V regulated rail. The 04 speed suffix corresponds to a 4 MHz oscillator input, and the /L suffix denotes the 44-pin PLCC package. The T suffix indicates tape-and-reel packaging for high-volume SMT assembly. The PLCC-44 footprint offers socket-friendly replaceability, which is useful in legacy industrial designs where field serviceability still matters.
Typical applications for the PIC16LF874T-04/L include industrial motor-control boards, HVAC damper and valve actuators, low-power sensor nodes, and consumer appliance controllers. The 33 I/O lines and ADC channels are sufficient to multiplex several analog sensors while still driving displays, keypads, and isolated relay outputs.
When designing with this part, evaluate whether the 4 MHz instruction rate is sufficient for the control loop. If tighter timing is required, consider the 20 MHz -20 speed grade or migrate to the pin-compatible PIC16F877A in the same PLCC-44 footprint.
This page combines current distributor pricing, parametric drop-in alternatives, and practical design notes not found on a single manufacturer datasheet PDF, giving procurement and engineering teams a single consolidated decision point.
Drop-in-Alternativen für PIC16LF874T-04/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-04/L (gleiche Bauform und Footprint) – abweichend in Core Architecture, Package, Operating Temperature, Timers, I/O Pins.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC16F874-04/L
✅ Drop-In✓ Auf Lager
$6.85 / Stück
Datenblatt ansehen →PIC16LF874-04I/L
✅ Drop-In✓ Auf Lager
$6.2 / Stück
Datenblatt ansehen →PIC16F877A-I/L
✅ Drop-In✓ Auf Lager
$7.12 / Stück
Datenblatt ansehen →PIC16F874-04I/L
✅ Drop-In✓ Auf Lager
$5.4 / Stück
Datenblatt ansehen →PIC16LF874T-04/L Grenzwerte & elektrische Eigenschaften
| Core Architecture | PIC16F (8-bit Harvard RISC) |
| CPU Frequency | 4 MHz (DC to 4 MHz instruction rate) |
| Program Memory | 7 KB Flash (4K x 14 words) |
| Data RAM | 192 bytes |
| Data EEPROM | 128 bytes |
| I/O Pins | 33 digital I/O |
| Operating Voltage | 2.0 V to 5.5 V |
| Betriebstemperatur | 0 °C to +70 °C (Commercial) |
| ADC | 10-bit, 8 channels |
| Timers | Timer0, Timer1, Timer2 |
| Capture/Compare/PWM | 2 CCP modules |
| Serial Interfaces | USART (SCI), SPI, I2C (MSSP) |
| Gehäuse | 44-pin PLCC (16.59 x 16.59 mm) |
| Montageart | Surface Mount (PLCC socket compatible) |
| MSL-Level | MSL-3 (per JEDEC J-STD-020) |
| Programming/Debug | ICSP (In-Circuit Serial Programming) |
PIC16LF874T-04/L Pin-Konfiguration
| Pin 1 | RA3/AN3/VREF+ — PORTA bit 3 / analog input 3 / ADC voltage reference + |
| Pin 2 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pin 3 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / SPI slave select |
| Pin 4 | RE0/RD/AN5 — PORTE bit 0 / parallel port read / analog input 5 |
| Pin 5 | RE1/WR/AN6 — PORTE bit 1 / parallel port write / analog input 6 |
| Pin 6 | RE2/CS/AN7 — PORTE bit 2 / parallel port chip select / analog input 7 |
| Pin 7 | VDD — Positive supply (2.0 V to 5.5 V) |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKIN — Crystal/ceramic resonator input or external clock in |
| Pin 10 | OSC2/CLKOUT — Crystal/ceramic resonator output or clock out |
| Pin 11 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator out / Timer1 clock input |
| Pin 12 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator in / CCP2 I/O |
| Pin 13 | RC2/CCP1 — PORTC bit 2 / CCP1 I/O |
| Pin 14 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pin 15 | RD0/PSP0 — PORTD bit 0 / parallel slave port bit 0 |
| Pin 16 | RD1/PSP1 — PORTD bit 1 / parallel slave port bit 1 |
| Pin 17 | RD2/PSP2 — PORTD bit 2 / parallel slave port bit 2 |
| Pin 18 | RD3/PSP3 — PORTD bit 3 / parallel slave port bit 3 |
| Pin 19 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pin 20 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pin 21 | RC6/TX/CK — PORTC bit 6 / USART transmit / USART clock |
| Pin 22 | RC7/RX/DT — PORTC bit 7 / USART receive / USART data |
| Pin 23 | RD4/PSP4 — PORTD bit 4 / parallel slave port bit 4 |
| Pin 24 | RD5/PSP5 — PORTD bit 5 / parallel slave port bit 5 |
| Pin 25 | RD6/PSP6 — PORTD bit 6 / parallel slave port bit 6 |
| Pin 26 | RD7/PSP7 — PORTD bit 7 / parallel slave port bit 7 |
| Pin 27 | VSS — Ground reference |
| Pin 28 | VDD — Positive supply (2.0 V to 5.5 V) |
| Pin 29 | RB0/INT — PORTB bit 0 / external interrupt |
| Pin 30 | RB1 — PORTB bit 1 |
| Pin 31 | RB2 — PORTB bit 2 |
| Pin 32 | RB3/PGM — PORTB bit 3 / low-voltage programming |
| Pin 33 | RB4 — PORTB bit 4 |
| Pin 34 | RB5 — PORTB bit 5 |
| Pin 35 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pin 36 | RB7/PGD — PORTB bit 7 / ICSP data |
| Pin 37 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Pin 38 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Pin 39 | RA2/AN2/VREF- — PORTA bit 2 / analog input 2 / ADC voltage reference - |
| Pin 40 | MCLR/VPP — Master clear reset / programming voltage |
| 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
PIC16LF874T-04/L ist geeignet für 7 Anwendungs: Industrial Motor Control Board, HVAC Damper and Valve Actuator, Low-Power Sensor Node, Consumer Appliance Controller, Automotive Aftermarket Accessory, Battery Charger / Power Management Front End, Educational / Development Platform.
Industrial Motor Control Board
The PIC16LF874T-04/L fits industrial motor-control boards where its 33 I/O lines drive phase-control signals, the 8-channel 10-bit ADC reads current/voltage feedback, and the 2 CCP modules generate PWM at up to 4 MHz instruction rate. Its 2.0-5.5 V LF supply rail accepts 24 V industrial bus regulation down to 3.3 V without level shifters. The 7 KB Flash holds typical BLDC/PMSM state-machine firmware, while 192 bytes RAM covers the small lookup tables these algorithms require.
Empfohlen
HVAC Damper and Valve Actuator
The PIC16LF874T-04/L is well suited to HVAC damper and valve actuator modules that need multiple analog inputs (temperature, pressure, humidity) and digital outputs to drive triac optocouplers. The 8 ADC channels multiplex several analog sensors while the 33 I/O lines handle relay and triac switching. Its LF grade runs directly from a 24 VAC rectified-rail regulator, eliminating the extra linear stage required by F-grade parts. EEPROM (128 bytes) retains user setpoints across power cycles.
Empfohlen
Low-Power Sensor Node
The PIC16LF874T-04/L suits battery-powered sensor nodes because the LF grade operates from a single 3.3 V coin cell or lithium pack down to 2.0 V. The 192-byte RAM and 128-byte EEPROM are enough to buffer a few sensor samples and persist calibration values, while the 7 KB Flash accommodates typical IoT-style sensing firmware. Its low active current (a few mA at 4 MHz) and small PLCC-44 footprint simplify enclosure design in remote or wall-mounted sensor enclosures.
Empfohlen
Consumer Appliance Controller
The PIC16LF874T-04/L is a fit for consumer appliance controllers (coffee machines, washing machines, microwave ovens) because the 33 I/O lines multiplex seven-segment drivers, keypad scans, and buzzer/relay outputs while the USART interfaces to inverter boards. The 7 KB Flash accommodates the typical mid-complexity appliance firmware, and the ICSP programming interface allows factory firmware updates. The PLCC-44 package is socket-compatible for serviceability in field-replaceable modules.
Empfohlen
Automotive Aftermarket Accessory
The PIC16LF874T-04/L drives automotive aftermarket accessories (alarm modules, LED drivers, fan controllers) where its 33 I/O lines are split between keypad/display and load drivers, and the 8-channel ADC reads battery voltage and sensor feedback. Note that this part is commercial-temp graded; for under-hood or extreme-ambient installations, choose the PIC16LF874-04I/L industrial variant. The LF grade handles 12 V battery regulation down to 3.3 V reliably.
Empfohlen
Battery Charger / Power Management Front End
The PIC16LF874T-04/L controls simple NiMH/Li-ion chargers where its 10-bit ADC monitors cell voltage and current with 7.5 mV LSB (at 5 V Vref), and its PWM modules regulate switching converters via feedback. The LF grade accepts a single-cell Li-ion rail (2.0 V-5.5 V) directly, simplifying charger topology. The 128-byte EEPROM stores charge profile parameters, and 192 bytes RAM is sufficient for a single-channel charging state machine without dynamic memory allocation.
Empfohlen
Educational / Development Platform
The PIC16LF874T-04/L is a common choice in university microcontroller courses and hobbyist projects because of its well-documented PIC16F87X architecture, plentiful application notes from Microchip, and standard PLCC-44 socket compatibility for easy prototyping. The 33 I/O lines, full peripheral set (ADC, PWM, I2C, SPI, USART), and 7 KB Flash exercise virtually every 8-bit MCU concept without overwhelming beginners. PICkit programmers support ICSP for in-circuit debugging.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC16LF874T-04/L – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC16F874-04/L | PIC16LF874-04I/L | PIC16F877A-I/L | PIC16F874-04I/L |
|---|---|---|---|---|---|
| Package | 44-pin PLCC (16.59x16.59 mm) | 44-pin PLCC - same | 44-pin PLCC - same | 44-pin PLCC - same | 44-pin PLCC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 7 KB (4K x 14) | 7 KB (same) | 7 KB (same) | 14 KB (+100%) | 7 KB (same) |
| RAM | 192 bytes | 192 bytes (same) | 192 bytes (same) | 368 bytes (+92%) | 192 bytes (same) |
| EEPROM | 128 bytes | 128 bytes (same) | 128 bytes (same) | 256 bytes (+100%) | 128 bytes (same) |
| Operating Voltage | 2.0 V to 5.5 V (LF grade) | 4.0 V to 5.5 V (F grade) | 2.0 V to 5.5 V (LF) | 2.0 V to 5.5 V (LF) | 4.0 V to 5.5 V (F grade) |
| Operating Temperature | 0 °C to +70 °C (Commercial) | 0 °C to +70 °C (Commercial) | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) |
| Max CPU Clock | 4 MHz (04 grade) | 4 MHz (same) | 4 MHz (same) | 20 MHz (max) | 4 MHz (same) |
| I/O Pins | 33 | 33 (same) | 33 (same) | 33 (same) | 33 (same) |
| Approx. Unit Price (qty 1) | $3.95 | $4.50 | $5.10 | $5.50 | $5.20 |
Wichtigste Unterscheidungsmerkmale
- Wide-voltage LF grade for low-power battery operation (vs. PIC16F874-04/L (standard F grade))
- Cost-effective mid-range 8-bit MCU with full peripheral set (vs. PIC16F877A-I/L)
- Commercial temperature grade optimized for indoor industrial use (vs. PIC16LF874-04I/L (industrial temp grade))
- PLCC-44 socket compatibility for serviceability (vs. TQFP-44 (PIC16LF874AT-I/PT))
Designhinweise
The PIC16LF874T-04/L requires a decoupling capacitor (100 nF ceramic) within 5 mm of the VDD/VSS pins and a bulk capacitor (10 uF tantalum or aluminum) at the supply rail. The LF grade (2.0 V to 5.5 V) lets the part share a 3.3 V rail with other peripherals, but ensure the regulator has at least 50 mA headroom for I/O switching transients and ADC reference current draw. A separate analog AVdd trace is recommended if the ADC is used to minimize digital noise coupling into analog readings.
Do not confuse the LF grade (2.0 V to 5.5 V) with the F grade (4.0 V to 5.5 V); applying 3.3 V to a PIC16F874 will fail to operate below the brown-out threshold. The MCLR pin must be pulled high through a 10 kohm resistor for normal operation; leaving it floating causes erratic resets. When using ICSP, ensure the PGC/PGD pins (RB6/RB7) are not heavily loaded by external circuitry during programming, or the programmer will fail to communicate.
Place the 4 MHz crystal/ceramic resonator within 5 mm of OSC1/OSC2 with the load capacitors (typically 15-33 pF) grounded close to the MCU ground pin. The PLCC-44 socket should be retained with proper hold-down hardware since PLCC sockets can vibrate loose in high-shock industrial environments. Keep high-current switching traces (relay/triac outputs) at least 10 mm away from the oscillator traces to avoid noise injection into the system clock.
Estimated: At 4 MHz, VDD=5 V, and all 33 I/O lines switching at full load, the PIC16LF874T-04/L dissipates approximately 250 mW (calculated from datasheet DC characteristics, IDD ~50 mA at 5 V). This is well within the thermal limit of the PLCC-44 package (theta_JA ~50 C/W, junction rise ~12.5 C above ambient at 250 mW), so no heatsink is required. Industrial variants with industrial temperature grade may dissipate slightly more at extended temperature due to leakage current.
Compliance-Informationen
RoHS, lead-free, and halogen-free status not stated in the verified web snippets; consult the Microchip product page or the device datasheet's compliance section for definitive values. AEC-Q100 is not applicable since this is a commercial-temperature-grade general-purpose MCU not marketed for automotive safety-critical applications.
