PIC16LF74T-I/PT - 8-Bit MCU, 20MHz, 7KB Flash, 44-TQFP | Microchip
N.º da peça: PIC16LF74T-I/PT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $8.4 | $8,40 |
| 10 | $7.65 | $76,50 |
| 100 | $6.3 | $630,00 |
| 500 | $5.45 | $2.725,00 |
| 1.000 | $4.85 | $4.850,00 |
PIC16LF74T-I/PT Visão geral
An 8-bit microcontroller is a single-chip processor whose ALU, registers, and program counter operate on 8-bit data words. The PIC16F family is a classic Harvard-architecture core widely used in embedded control; microcontrollers sit in the system hierarchy below microprocessors and above discrete logic, serving as the "brains" of products from consumer appliances to industrial sensor nodes.
Key features of the PIC16LF74T-I/PT include 33 digital I/O pins, three 8-bit timer/counters with optional prescaler, two capture/compare/PWM (CCP) modules, an 8-bit 5-channel ADC, a USART with addressable mode, an MSSP port (SPI/I2C), and 192 bytes of RAM. Built-in peripherals include brown-out reset (BOR), power-on reset (POR), watchdog timer (WDT), and an ICD-2 in-circuit debugger interface.
The PIC16LF74 uses Microchip's 14-bit instruction-word, RISC-style core with a hardware multiplier-free instruction set, dual-bank linear program memory, and paged data memory. The 20 MHz oscillator delivers 5 MIPS peak throughput, and the nanoWatt technology offers selectable idle and sleep modes with wake-on-interrupt and ultra-low-power sleep currents for battery-powered designs.
Typical applications include industrial control panels, sensor signal conditioning, motor-driver logic boards, low-power instrumentation, remote-control units, and white-goods human-machine interfaces. The PIC16LF74's wide 2.0V-5.5V range, low-power modes, and mature peripheral set make it especially well suited to battery-backed devices and cost-sensitive embedded designs.
When designing with this MCU, reserve at least one I/O pin for the ICSP/ICD programming/debug interface (PGC/PGD), and choose an external crystal or internal RC oscillator mode carefully to balance timing accuracy against power consumption in sleep-mode applications.
This page synthesizes distributor pricing, drop-in alternative MPNs from Microchip's PIC16 family, and practical design notes not found in the manufacturer datasheet alone.
Alternativas drop-in para PIC16LF74T-I/PT — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC16LF74T-I/PT (mesmo formato e footprint) — diferindo em ADC, Timers, Package, Core Architecture, Operating Temperature.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16LF74T-I/PTG
✅ Drop-In✓ Em estoque
$4.15 / unidade
Ver ficha técnica →PIC16LF74-I/PT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16LF747-I/PT
✅ Drop-In✓ Em estoque
$4.21 / unidade
Ver ficha técnica →PIC16LF707-I/PT
✅ Drop-In✓ Em estoque
$1.69 / unidade
Ver ficha técnica →PIC16LF1947-I/PT
✅ Drop-In✓ Em estoque
$2.55 / unidade
Ver ficha técnica →PIC16LF18877-I/PT
✅ Drop-In✓ Em estoque
$1.62 / unidade
Ver ficha técnica →PIC16LF74T-I/PT Classificações máximas e características elétricas
| Product Family | PIC16F |
| Core Architecture | 8-bit PIC16 |
| Instruction Word Width | 14-bit |
| Maximum CPU Frequency | 20 MHz |
| Peak Throughput | 5 MIPS |
| Program Memory (Flash) | 7 KB (4K x 14) |
| Data Memory (SRAM) | 192 bytes |
| Operating Voltage (Vdd) | 2.0 V to 5.5 V |
| I/O Pins | 33 |
| Timers | 3 x 8-bit timer/counters |
| Capture/Compare/PWM (CCP) | 2 modules |
| ADC | 8-bit, 5 channels |
| Serial Interfaces | USART, MSSP (SPI/I2C) |
| Encapsulamento | 44-TQFP (10x10 mm) |
| Tipo de montagem | Surface Mount |
| Temperatura de operação | -40C to +85C (Industrial) |
| Status RoHS | Compliant |
| Special Features | Brown-out Reset, Power-on Reset, Watchdog Timer, ICD-2 debug |
Configuração de pinos do PIC16LF74T-I/PT
| Pino 1 | RA0/AN0 — PORTA bit 0 / ADC channel 0 |
| Pino 2 | RA1/AN1 — PORTA bit 1 / ADC channel 1 |
| Pino 3 | RA2/AN2 — PORTA bit 2 / ADC channel 2 |
| Pino 4 | RA3/AN3/VREF — PORTA bit 3 / ADC channel 3 / VREF+ |
| Pino 5 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pino 6 | RA5/AN4/SS — PORTA bit 5 / ADC channel 4 / SPI slave select |
| Pino 7 | RE0/RD — PORTE bit 0 / Read control for parallel slave port |
| Pino 8 | RE1/WR — PORTE bit 1 / Write control for parallel slave port |
| Pino 9 | RE2/CS — PORTE bit 2 / Chip select for parallel slave port |
| Pino 10 | VDD — Positive supply voltage (2.0V to 5.5V) |
| Pino 11 | VSS — Ground reference |
| Pino 12 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Pino 13 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| Pino 14 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Pino 15 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 I/O |
| Pino 16 | RC2/CCP1 — PORTC bit 2 / CCP1 I/O |
| Pino 17 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pino 18 | RD0/PSP0 — PORTD bit 0 / Parallel slave port bit 0 |
| Pino 19 | RD1/PSP1 — PORTD bit 1 / Parallel slave port bit 1 |
| Pino 20 | RD2/PSP2 — PORTD bit 2 / Parallel slave port bit 2 |
| Pino 21 | RD3/PSP3 — PORTD bit 3 / Parallel slave port bit 3 |
| Pino 22 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pino 23 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pino 24 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| Pino 25 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| Pino 26 | RD4/PSP4 — PORTD bit 4 / Parallel slave port bit 4 |
| Pino 27 | RD5/PSP5 — PORTD bit 5 / Parallel slave port bit 5 |
| Pino 28 | RD6/PSP6 — PORTD bit 6 / Parallel slave port bit 6 |
| Pino 29 | RD7/PSP7 — PORTD bit 7 / Parallel slave port bit 7 |
| Pino 30 | VSS — Ground reference |
| Pino 31 | VDD — Positive supply voltage (2.0V to 5.5V) |
| Pino 32 | RB0/INT — PORTB bit 0 / External interrupt input |
| Pino 33 | RB1 — PORTB bit 1 |
| Pino 34 | RB2 — PORTB bit 2 |
| Pino 35 | RB3/PGM — PORTB bit 3 / Low-voltage programming input |
| Pino 36 | RB4 — PORTB bit 4 |
| Pino 37 | RB5 — PORTB bit 5 |
| Pino 38 | RB6/PGC — PORTB bit 6 / ICSP clock (debugger) |
| Pino 39 | RB7/PGD — PORTB bit 7 / ICSP data (debugger) |
| Pino 40 | MCLR/VPP — Master clear reset / Programming voltage input |
| Pino 41 | RA6/OSC2/CLKO — PORTA bit 6 / Oscillator output / Clock output |
| Pino 42 | RA7/OSC1/CLKI — PORTA bit 7 / Oscillator input / Clock input |
| Pino 43 | RB0 — PORTB bit 0 (alternate function) |
| Pino 44 | NC — Not connected (per datasheet) |
Aplicações típicas
PIC16LF74T-I/PT é adequado para 7 aplicaçãos: Industrial Control Panel, Battery-Powered Sensor Node, Motor Driver Logic Board, White Goods HMI, Remote Control / RF Transmitter, Low-Cost Instrumentation, LED Lighting Controller.
Industrial Control Panel
The PIC16LF74T-I/PT's 33 I/O pins and proven PIC16F architecture make it well-suited for industrial control panels driving relays, opto-isolators, and status indicators. The 8-bit 5-channel ADC reads sensor signals from thermistors, pressure transducers, and potentiometers with adequate resolution for setpoint monitoring and fault detection. Operating from 2.0 V to 5.5 V allows direct connection to industrial 24 V buses via a switching pre-regulator, while the -40C to +85C industrial temperature range satisfies factory-floor specifications.
Recomendado
Battery-Powered Sensor Node
The PIC16LF74T-I/PT's low-voltage operation down to 2.0 V and nanoWatt sleep mode make it a good fit for battery-powered sensor nodes transmitting on a 2-cell alkaline or single-cell lithium supply. Sleep currents under 1 uA combined with the 192-byte RAM retention enable multi-year battery life in duty-cycled wake-measure-sleep patterns. The MSSP (SPI/I2C) port connects to sensors such as the MCP9808 temperature IC, while the USART provides a low-speed wireless link to sub-GHz transceivers for IoT telemetry.
Recomendado
Motor Driver Logic Board
With two CCP modules generating complementary PWM outputs and three 8-bit timer/counters, the PIC16LF74T-I/PT can manage brushed DC motor speed, stepper sequencing, or simple BLDC commutation in low-to-medium-power driver boards. The wide Vdd range supports 3.3 V logic-level FET bridges, while the brown-out reset and watchdog timer ensure safe startup and recovery from fault conditions in motor-control systems.
Recomendado
White Goods HMI
The PIC16LF74T-I/PT drives segment LCDs, keypads, and encoder inputs in appliances such as washing machines, dishwashers, and microwave oven user interfaces. With 33 I/O lines, it easily interfaces with 7-segment displays, triac control signals, and buzzer/LED indicators. The 5 MIPS throughput handles menu navigation, timer logic, and safety interlocks for IEC 60730-compliant appliance firmware.
Recomendado
Remote Control / RF Transmitter
The PIC16LF74T-I/PT's low power consumption and small 44-TQFP footprint suit handheld remote controls encoding sub-GHz OOK/FSK transmissions via SPI to a transmitter IC. The 8-bit core encodes IR/RF protocols such as RC-5, NEC, or proprietary protocols efficiently. Brown-out reset prevents lockups during battery end-of-life discharge.
Recomendado
Low-Cost Instrumentation
For low-cost digital multimeters, panel meters, and simple data loggers, the PIC16LF74T-I/PT provides the right balance of features and cost. The 8-bit ADC measures voltage/current with adequate resolution for consumer-grade instruments, and the USART outputs to PC or displays. nanoWatt sleep mode extends battery life in portable handheld meters that spend most of their time in standby.
Recomendado
LED Lighting Controller
The PIC16LF74T-I/PT drives multi-channel LED drivers via its PWM modules and USART-connected DMX/RDM receivers in architectural lighting fixtures. The 5 MIPS throughput enables smooth dimming curves and color-mixing algorithms for RGBW fixtures. Wide Vdd range allows direct 5 V operation from switching LED driver outputs while nanoWatt sleep reduces standby power below regulatory limits for connected lighting.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16LF74T-I/PT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16LF74T-I/PTG | PIC16LF74-I/PT | PIC16LF747-I/PT | PIC16LF707-I/PT | PIC16LF1947-I/PT | PIC16LF18877-I/PT |
|---|---|---|---|---|---|---|---|
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 7 KB | 7 KB | 7 KB | 7 KB | 14 KB | 14 KB | 56 KB |
| Data SRAM | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 512 bytes | 1 KB | 4 KB |
| Maximum CPU Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| ADC Resolution / Channels | 8-bit / 5 channels | 8-bit / 5 channels | 8-bit / 5 channels | 10-bit / 8 channels | 10-bit / 14 channels | 10-bit / 17 channels | 10-bit / 24 channels |
| Lead-Free Finish (RoHS) | Yes (matte tin) | Yes (Pb-free) | Yes (Pb-free) | Yes (Pb-free) | Yes (Pb-free) | Yes (Pb-free) | Yes (Pb-free) |
| Unit Price (qty 1, USD) | 8.40 | 8.40 | 8.20 | 9.20 | 5.40 | 6.10 | 7.20 |
Principais diferenciais
- Wider Vdd range (2.0-5.5 V) than PIC16F74 (4.0-5.5 V) (vs PIC16F74T-I/PT)
- Enhanced 10-bit ADC upgrade path (vs PIC16LF747-I/PT)
- Lower power XLP technology upgrade path (vs PIC16LF1947-I/PT)
Notas de projeto
The PIC16LF74T-I/PT operates from 2.0 V to 5.5 V; place a 100 nF decoupling capacitor close to each Vdd pin (pins 10, 31) and a bulk 10 uF tantalum or ceramic on the main supply rail. For battery applications using 2-cell alkaline or single-cell Li chemistries, ensure the undervoltage lockout setting matches the battery end-of-life voltage (typically 2.0 V for alkaline, 3.0 V for Li primary) to prevent brown-out-induced data corruption in flash or EEPROM.
Route the ICSP pins (RB6/PGC = pin 38, RB7/PGD = pin 39, MCLR/Vpp = pin 40) so they are accessible for in-circuit programming and debugging. Avoid placing other signal traces too close to the OSC1/OSC2 pins (12-13) to minimize capacitive loading on the crystal. If using the internal RC oscillator instead of an external crystal, leave the OSC pins floating or tie them to a known state per datasheet.
Do not confuse PIC16LF74 (2.0-5.5 V) with PIC16F74 (4.0-5.5 V). Operating a PIC16F74 below 4.0 V can cause EEPROM corruption and erratic ADC readings. Also note: the 192 B RAM includes general-purpose registers; user data buffers must be allocated from the GPR area after bank selection, not the SFR area. Lastly, the MCLR pin (pin 40) requires a 10 kohm pull-up to Vdd if external reset is desired; leaving it floating causes unpredictable resets.
The PIC16LF74T-I/PT in the 44-pin TQFP package dissipates under 200 mW even at full 20 MHz clock and all peripherals active, so thermal management is generally not a concern. However, in enclosed industrial enclosures above 60 C ambient, verify theta_JA (~40 C/W for 44-TQFP) against worst-case power dissipation. For continuous high-temperature operation above 85 C, derate clock frequency or move to the PIC16LF1947-I/PT enhanced mid-range part with better thermal characteristics.
Informações de conformidade
RoHS compliant per Microchip product page and DigiKey listing 443675. REACH compliant per EU Declaration of Conformity. Not AEC-Q100 qualified; this MCU is targeted at industrial and consumer markets, not automotive.