PIC16LF74T-I/PT - 8-Bit MCU, 20MHz, 7KB Flash, 44-TQFP | Microchip
MPN: PIC16LF74T-I/PT ✓ פעילPIC16LF74T-I/PT סקירה
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.
חלופות תחליף ישיר עבור PIC16LF74T-I/PT — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם PIC16LF74T-I/PT (אותו גורם צורה וטביעת רגל) — שונים ב ADC, Timers, Package, Core Architecture, Operating Temperature.
PIC16LF74T-I/PTG
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16LF74-I/PT
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC16LF747-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16LF707-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16LF1947-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16LF18877-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16LF74T-I/PT דירוגים מרביים ומאפיינים חשמליים
| 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) |
| מארז | 44-TQFP (10x10 mm) |
| סוג הרכבה | Surface Mount |
| טמפרטורת פעולה | -40C to +85C (Industrial) |
| סטטוס RoHS | Compliant |
| Special Features | Brown-out Reset, Power-on Reset, Watchdog Timer, ICD-2 debug |
תצורת פינים של PIC16LF74T-I/PT
| פין 1 | RA0/AN0 — PORTA bit 0 / ADC channel 0 |
| פין 2 | RA1/AN1 — PORTA bit 1 / ADC channel 1 |
| פין 3 | RA2/AN2 — PORTA bit 2 / ADC channel 2 |
| פין 4 | RA3/AN3/VREF — PORTA bit 3 / ADC channel 3 / VREF+ |
| פין 5 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| פין 6 | RA5/AN4/SS — PORTA bit 5 / ADC channel 4 / SPI slave select |
| פין 7 | RE0/RD — PORTE bit 0 / Read control for parallel slave port |
| פין 8 | RE1/WR — PORTE bit 1 / Write control for parallel slave port |
| פין 9 | RE2/CS — PORTE bit 2 / Chip select for parallel slave port |
| פין 10 | VDD — Positive supply voltage (2.0V to 5.5V) |
| פין 11 | VSS — Ground reference |
| פין 12 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| פין 13 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| פין 14 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| פין 15 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 I/O |
| פין 16 | RC2/CCP1 — PORTC bit 2 / CCP1 I/O |
| פין 17 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| פין 18 | RD0/PSP0 — PORTD bit 0 / Parallel slave port bit 0 |
| פין 19 | RD1/PSP1 — PORTD bit 1 / Parallel slave port bit 1 |
| פין 20 | RD2/PSP2 — PORTD bit 2 / Parallel slave port bit 2 |
| פין 21 | RD3/PSP3 — PORTD bit 3 / Parallel slave port bit 3 |
| פין 22 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| פין 23 | RC5/SDO — PORTC bit 5 / SPI data out |
| פין 24 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| פין 25 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| פין 26 | RD4/PSP4 — PORTD bit 4 / Parallel slave port bit 4 |
| פין 27 | RD5/PSP5 — PORTD bit 5 / Parallel slave port bit 5 |
| פין 28 | RD6/PSP6 — PORTD bit 6 / Parallel slave port bit 6 |
| פין 29 | RD7/PSP7 — PORTD bit 7 / Parallel slave port bit 7 |
| פין 30 | VSS — Ground reference |
| פין 31 | VDD — Positive supply voltage (2.0V to 5.5V) |
| פין 32 | RB0/INT — PORTB bit 0 / External interrupt input |
| פין 33 | RB1 — PORTB bit 1 |
| פין 34 | RB2 — PORTB bit 2 |
| פין 35 | RB3/PGM — PORTB bit 3 / Low-voltage programming input |
| פין 36 | RB4 — PORTB bit 4 |
| פין 37 | RB5 — PORTB bit 5 |
| פין 38 | RB6/PGC — PORTB bit 6 / ICSP clock (debugger) |
| פין 39 | RB7/PGD — PORTB bit 7 / ICSP data (debugger) |
| פין 40 | MCLR/VPP — Master clear reset / Programming voltage input |
| פין 41 | RA6/OSC2/CLKO — PORTA bit 6 / Oscillator output / Clock output |
| פין 42 | RA7/OSC1/CLKI — PORTA bit 7 / Oscillator input / Clock input |
| פין 43 | RB0 — PORTB bit 0 (alternate function) |
| פין 44 | NC — Not connected (per datasheet) |
יישומים טיפוסיים
PIC16LF74T-I/PT מתאים עבור 7 יישוםs: 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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC16LF74T-I/PT — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | 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 |
מבדילים עיקריים
- Wider Vdd range (2.0-5.5 V) than PIC16F74 (4.0-5.5 V) (לעומתPIC16F74T-I/PT)
- Enhanced 10-bit ADC upgrade path (לעומתPIC16LF747-I/PT)
- Lower power XLP technology upgrade path (לעומתPIC16LF1947-I/PT)
הערות תכנון
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.
מידע על תאימות
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.