PIC16F874T-20/L - 8-bit PIC MCU, 7KB Flash, 20MHz, 44-PLCC | Microchip
부품 번호: PIC16F874T-20/L ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $8.16 | $8.16 |
| 10 | $7.55 | $75.50 |
| 100 | $6.81 | $681.00 |
| 500 | $6.18 | $3,090.00 |
| 1,000 | $5.62 | $5,620.00 |
PIC16F874T-20/L 개요
An 8-bit PIC microcontroller (MCU) is a small, self-contained computer on a single CMOS IC that combines a RISC CPU core, non-volatile flash program memory, volatile SRAM data memory, and a rich set of peripheral modules. The PIC16F family sits at the entry tier of Microchip's mid-range architecture, offering 14-bit instruction words, hardware stack, and on-chip peripherals including ADC, USART, I2C/SPI, and capture/compare/PWM. Within the broader taxonomy, the PIC16F874 belongs to the 16F mid-range family, which sits under Microchip's 8-bit product line, which itself falls under the microcontroller category of the integrated-circuits hierarchy. This hierarchy is important for engineers selecting parts because firmware developed for one PIC16F87x device typically ports with minimal changes to siblings in the same family.
Key features include 7KB flash program memory (4K x 14 words), 192 bytes of data RAM, 128 bytes of EEPROM data memory, a 10-bit 8-channel analog-to-digital converter, two 8-bit and one 16-bit timer/counter modules, a synchronous/asynchronous USART port, a master SPI/I2C port, and a parallel slave port for external bus expansion. The device also provides 33 digital I/O pins, hardware interrupt handling with a 14-level deep stack, in-circuit serial programming (ICSP), and a programmable code-protection scheme.
Typical applications include industrial control and instrumentation, sensor signal conditioning and front-end processing, motor-control and PWM driver boards, automotive body and chassis subsystems (where extended-temperature PIC16F874T-20I/L variants would be used), consumer-electronics user-input handling, and low-cost embedded data-acquisition front ends. The parallel slave port enables direct connection to external host processors for system expansion.
When designing with the PIC16F874T-20/L, ensure decoupling capacitors of 100 nF are placed within 5 mm of each VDD/VSS pair and that the MCLR reset line is pulled high through a 10 kohm resistor with a 100 nF capacitor for noise immunity. The 44-pin PLCC socket should be socketed during prototype development to permit firmware iteration.
This page consolidates distributor pricing, parametric data, and drop-in alternatives not aggregated elsewhere - it is engineered for engineers who already know the PIC16F family and need a fast, scannable reference for this specific MPN.
드롭인 대체품: PIC16F874T-20/L — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: PIC16F874T-20/L (동일 폼 팩터 및 풋프린트) — 차이점: Timers, Core Architecture, Operating Temperature, Package, ADC.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
PIC16F874T-20I/L
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PIC16F874A-I/L
✅ 드롭인✓ 재고 있음
$5.2 / 개
데이터시트 보기 →PIC16F874AT-I/ML
✅ 드롭인✓ 재고 있음
$4.77 / 개
데이터시트 보기 →PIC16F874-04/L
✅ 드롭인✓ 재고 있음
$6.85 / 개
데이터시트 보기 →PIC16F877T-20/L
✅ 드롭인✓ 재고 있음
$7.3 / 개
데이터시트 보기 →PIC16F871-I/L
✅ 드롭인✓ 재고 있음
$2.75 / 개
데이터시트 보기 →PIC16F874T-20/L 최대 정격 & 전기적 특성
| Core Architecture | PIC 8-bit RISC |
| Program Memory Type | Flash |
| Program Memory Size | 7 KB (4K x 14) |
| Data RAM | 192 bytes |
| Data EEPROM | 128 bytes |
| Maximum CPU Speed | 20 MHz |
| Instruction Cycle Time | 200 ns |
| 동작 공급 전압 | 4 V to 5.5 V |
| Number of I/O Pins | 33 |
| ADC | 10-bit, 8 channels |
| Timers | 2 x 8-bit, 1 x 16-bit |
| Communication Interfaces | USART, SPI, I2C, Parallel Slave Port |
| 패키지 / 케이스 | 44-pin PLCC (J-Lead, surface mount) |
| 실장 유형 | Surface Mount |
| 동작 온도 | 0C to +70C (commercial grade) |
| Packaging | Tape & Reel (T suffix) |
PIC16F874T-20/L 핀 구성
| 핀 1 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| 핀 2 | RA0/AN0 — Port A bit 0 / Analog input channel 0 |
| 핀 3 | RA1/AN1 — Port A bit 1 / Analog input channel 1 |
| 핀 4 | RA2/AN2 — Port A bit 2 / Analog input channel 2 |
| 핀 5 | RA3/AN3/VREF+ — Port A bit 3 / Analog input channel 3 / ADC VREF+ |
| 핀 6 | RA4/T0CKI — Port A bit 4 / Timer 0 clock input |
| 핀 7 | RA5/AN4/SS — Port A bit 5 / Analog input channel 4 / SPI slave select |
| 핀 8 | RE0/RD/AN5 — Port E bit 0 / Parallel slave port read / AN5 |
| 핀 9 | RE1/WR/AN6 — Port E bit 1 / Parallel slave port write / AN6 |
| 핀 10 | RE2/CS/AN8 — Port E bit 2 / Parallel slave port chip select / AN8 |
| 핀 11 | VDD — Positive supply voltage (5V) |
| 핀 12 | VSS — Ground reference |
| 핀 13 | OSC1/CLKI — Crystal oscillator input / external clock in |
| 핀 14 | OSC2/CLKO — Crystal oscillator output / clock out |
| 핀 15 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer 1 oscillator output / T1 clock in |
| 핀 16 | RC1/T1OSI/CCP2 — Port C bit 1 / T1 oscillator input / CCP2 |
| 핀 17 | RC2/CCP1 — Port C bit 2 / Capture/Compare/PWM 1 |
| 핀 18 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| 핀 19 | RD0/PSP0 — Port D bit 0 / Parallel slave port data 0 |
| 핀 20 | RD1/PSP1 — Port D bit 1 / Parallel slave port data 1 |
| 핀 21 | RD2/PSP2 — Port D bit 2 / Parallel slave port data 2 |
| 핀 22 | RD3/PSP3 — Port D bit 3 / Parallel slave port data 3 |
| 핀 23 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| 핀 24 | RC5/SDO — Port C bit 5 / SPI data out |
| 핀 25 | RC6/TX/CK — Port C bit 6 / USART TX / USART clock |
| 핀 26 | RC7/RX/DT — Port C bit 7 / USART RX / USART data |
| 핀 27 | RD4/PSP4 — Port D bit 4 / Parallel slave port data 4 |
| 핀 28 | RD5/PSP5 — Port D bit 5 / Parallel slave port data 5 |
| 핀 29 | RD6/PSP6 — Port D bit 6 / Parallel slave port data 6 |
| 핀 30 | RD7/PSP7 — Port D bit 7 / Parallel slave port data 7 |
| 핀 31 | VSS — Ground reference |
| 핀 32 | VDD — Positive supply voltage (5V) |
| 핀 33 | RB0/INT — Port B bit 0 / External interrupt |
| 핀 34 | RB1 — Port B bit 1 |
| 핀 35 | RB2 — Port B bit 2 |
| 핀 36 | RB3/PGM — Port B bit 3 / LVP programming |
| 핀 37 | RB4 — Port B bit 4 |
| 핀 38 | RB5 — Port B bit 5 |
| 핀 39 | RB6/PGC — Port B bit 6 / ICSP clock |
| 핀 40 | RB7/PGD — Port B bit 7 / ICSP data |
| 핀 41 | NC — Not connected (per datasheet) |
| 핀 42 | NC — Not connected (per datasheet) |
| 핀 43 | NC — Not connected (per datasheet) |
| 핀 44 | NC — Not connected (per datasheet) |
일반적인 애플리케이션
PIC16F874T-20/L 적합 용도: 6 애플리케이션s: Industrial Sensor Signal Conditioning, Motor Control and PWM Driver Boards, Consumer Electronics User Interface Controller, Embedded Data Acquisition Front End, Automotive Body and Chassis Subsystems, Home Appliance Control Board.
Industrial Sensor Signal Conditioning
The PIC16F874T-20/L's 8-channel 10-bit ADC and 33 I/O pins make it well-suited for multi-sensor industrial front ends. Its 5 MIPS throughput handles linearization, scaling, and alarm threshold checks at loop rates up to 20 kHz, while the USART feeds data to a host PLC. The 4-5.5 V supply matches industrial 5 V rails directly. Use with a 4N35 optocoupler on MCLR for noisy factory-floor resets.
추천
Motor Control and PWM Driver Boards
The PIC16F874T-20/L integrates one 16-bit and two 8-bit timer/counters, plus a 10-bit PWM module, sufficient to drive brushed DC or small BLDC motors with closed-loop control. The 5 MIPS throughput supports PI loops at 10 kHz while leaving headroom for USART-based tuning. The 33 I/O pins handle quadrature encoders, fault inputs, and H-bridge gate drives. Stack with an IRS2003 gate driver for 3-phase BLDC.
추천
Consumer Electronics User Interface Controller
With 33 I/O, hardware I2C/SPI, and 7 KB flash, the PIC16F874T-20/L fits mid-complexity user interfaces: matrix keypads, character LCDs via SPI, and NeoPixel-style LED chains. The 200 ns instruction cycle keeps debounce and scan loops crisp. The 44-PLCC package sits easily on a 2-layer consumer PCB. Pair with a 16x2 character LCD over I2C using an MCP23017 port expander.
추천
Embedded Data Acquisition Front End
The PIC16F874T-20/L is a classic DAQ front end: the 10-bit ADC at 8 channels samples up to ~50 ksps aggregate, the USART streams data to a host PC, and the parallel slave port offloads to a DSP when higher throughput is required. With 192 B RAM, store 96 12-bit ADC samples internally. The 7 KB flash holds a small ring buffer and command interpreter. Add an MCP4725 DAC for stimulus output.
추천
Automotive Body and Chassis Subsystems
The PIC16F874T-20/L operates 0-70C; for under-hood or cabin modules use the PIC16F874T-20I/L industrial variant. Within an automotive body control module, the MCU handles LIN-style comms, switches loads, and monitors door/window switches. The 33 I/O drive multiple relays and MOSFETs; the 10-bit ADC monitors battery voltage. Use a TPS3823 watchdog and LM7805 5 V regulator for the supply rail.
추천
Home Appliance Control Board
The PIC16F874T-20/L's combination of 7 KB flash, USART, and 33 I/O fits washing-machine, dishwasher, or microwave control boards. The 5 MIPS core handles triac-fired heater control via zero-cross detection on the 16-bit timer, while the ADC monitors thermistor and water-level sensors. PLCC-44 sockets simplify field serviceability in white-goods production. Use with an MOC3021 optotriac for AC load switching.
추천
추천 제품 요약
엔지니어링 참조 데이터: PIC16F874T-20/L — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | PIC16F874T-20I/L | PIC16F874A-I/L | PIC16F874AT-I/ML | PIC16F874-04/L | PIC16F877T-20/L | PIC16F871-I/L |
|---|---|---|---|---|---|---|---|
| Package | 44-pin PLCC (J-Lead) | 44-pin PLCC (J-Lead) | 44-pin PLCC (J-Lead) | 44-pin QFN | 44-pin PLCC (J-Lead) | 44-pin PLCC (J-Lead) | 44-pin PLCC (J-Lead) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 7 KB (4K x 14) | 7 KB | 7 KB | 7 KB | 7 KB | 14 KB | 14 KB |
| Max CPU Speed | 20 MHz (5 MIPS) | 20 MHz (5 MIPS) | 20 MHz (5 MIPS) | 20 MHz (5 MIPS) | 4 MHz (1 MIPS) | 20 MHz (5 MIPS) | 20 MHz (5 MIPS) |
| Operating Temperature | 0C to +70C (commercial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | 0C to +70C | 0C to +70C | -40C to +85C (industrial) |
| RAM | 192 B | 192 B | 192 B | 192 B | 192 B | 368 B | 256 B |
| ADC | 10-bit, 8 ch | 10-bit, 8 ch | 10-bit, 8 ch | 10-bit, 8 ch | 10-bit, 8 ch | 10-bit, 8 ch | 10-bit, 8 ch |
| Parallel Slave Port | Yes | Yes | Yes | Yes | Yes | Yes | No |
주요 차별점
- Parallel Slave Port for host offload (vs PIC16F871-I/L)
- Industrial-temperature variant available in same PLCC (vs PIC16F874T-04/L)
- Enhanced successor with 4x performance in same PLCC (vs PIC16F874-20/P)
설계 노트
Estimated: at VDD=5 V and 20 MHz active CPU, the PIC16F874T-20/L draws approximately 13 mA. Place a 100 nF decoupling capacitor within 5 mm of each VDD/VSS pin pair (pins 11/12 and 31/32). Add a bulk 10 uF tantalum at the regulator output. Use a 10 kohm pull-up on MCLR with a 100 nF capacitor to ground for noise immunity on industrial boards.
Route the 20 MHz crystal traces on the top layer, keep them under 5 mm, and surround them with a ground pour. Place C1 and C2 (typically 22 pF) symmetrically between OSC1/OSC2 and GND. Keep switching DC-DC converter nodes away from the crystal area by at least 5 mm to prevent clock jitter.
Do not program the flash below 4.0 V - high-voltage bulk erase and row-program operations may fail silently and brick the device. The configuration-word low-voltage programming bit (LVP=1) must be cleared before 5 V in-circuit operation or the RB3/PGM pin becomes a programming input. Always verify the MCLR line is not floating in noisy environments.
규정 준수 정보
RoHS / REACH / lead-free status not stated in the Verified Web Data and not verified against the manufacturer datasheet. PIC16F874T-20/L is not AEC-Q100 qualified; for automotive use, select the PIC16F874T-20I/L industrial variant and confirm compliance with the customer's automotive quality requirements.
