PIC16C74BT-04E/PT - 8-bit PIC MCU, 7KB OTP, 4MHz, 44-TQFP | Microchip
N.º da peça: PIC16C74BT-04E/PT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $9.5 | $9,50 |
| 10 | $8.55 | $85,50 |
| 100 | $7.6 | $760,00 |
| 500 | $6.84 | $3.420,00 |
| 1.000 | $6.08 | $6.080,00 |
PIC16C74BT-04E/PT Visão geral
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals on one die, and the PIC16CXX mid-range family uses a RISC (Reduced Instruction Set Computer) architecture with 35 single-cycle instructions to deliver predictable deterministic execution. The PIC16C74B specifically sits in the mid-range tier between baseline PIC16C5x and enhanced PIC16C6x/7x parts, balancing peripheral integration with code density for embedded control designs.
Key features include 33 digital I/O lines multiplexed with on-chip peripherals, three timer modules, a USART for asynchronous/synchronous serial communication, an MSSP module for SPI and I2C, an 8-channel 8-bit Analog-to-Digital Converter (ADC), and capture/compare/PWM (CCP) capability. The OTP program memory uses EPROM cells, which the "T" suffix indicates an industrial/automotive temperature window. Power consumption is reduced through the SLEEP mode with wake-up on interrupt or watchdog timeout, and the architecture supports in-circuit serial programming via two pins.
The PIC16C74B uses a Harvard architecture with separate program and data buses, allowing instruction fetch and operand access in a single cycle. The RISC CPU contains an 8-bit ALU, 8-bit working register (W), and a hardware multiply assist. Brown-out Reset (BOR), Power-on Reset (POR), and Watchdog Timer (WDT) with its own on-chip RC oscillator protect against code runaway and unstable supply ramps.
Typical applications include industrial control nodes, automotive body and chassis ECUs, sensor signal conditioning, low-speed motor drivers, HVAC damper controllers, and consumer appliance user interfaces. The 8-bit ADC is well matched to thermistor, potentiometer, and battery monitoring tasks. The PIC16C74BT-04E/PT specifically suits automotive under-hood modules where the extended temperature grade and proven OTP one-time-programmable memory are required. When selecting this part, verify that OTP is acceptable for your production volume - high-volume programs typically migrate to the Flash-based PIC16F74 or PIC16F877A for reprogrammability during board bring-up.
Alternativas drop-in para PIC16C74BT-04E/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 PIC16C74BT-04E/PT (mesmo formato e footprint) — diferindo em Core Architecture, Timers, Operating Temperature, Program Memory Size, Program Memory Type.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16C74BT-04E/PQ
✅ Drop-In✓ Em estoque
$7.9 / unidade
Ver ficha técnica →PIC16C74BT-04/PQ
✅ Drop-In✓ Em estoque
$5.6 / unidade
Ver ficha técnica →PIC16C74B-04E/PQ
✅ Drop-In✓ Em estoque
$9.95 / unidade
Ver ficha técnica →PIC16C74B-04E/L
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$9.3 / unidade
Ver ficha técnica →PIC16C74B-04I/P
✅ Drop-In✓ Em estoque
$5.55 / unidade
Ver ficha técnica →PIC16C65B-04I/PT
✅ Drop-In✓ Em estoque
$7.1 / unidade
Ver ficha técnica →PIC16C74BT-04E/PT Classificações máximas e características elétricas
| Core Architecture | 8-bit PIC RISC (mid-range PIC16CXX family) |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 7 KB (4K x 14) |
| RAM Size | 192 x 8 bytes |
| Number of I/O Pins | 33 |
| Frequência máxima de clock | 4 MHz |
| Supply Voltage (Vcc/Vdd) | 4.0 V to 5.5 V |
| Oscillator Type | External |
| Encapsulamento / Caixa | 44-TQFP (10x10 mm) |
| Packaging | Tape & Reel (TR) |
| Temperature Grade | Automotive (Extended -40C to +125C) |
| Terminal Form | Gull Wing |
| Number of Terminals | 44 |
| Package Code | TQFP |
| Package Shape | Square |
| Series | PIC 16C |
Configuração de pinos do PIC16C74BT-04E/PT
| Pino 1 | MCLR/Vpp — Master Clear (reset) input / Programming voltage |
| Pino 2 | RA0/AN0 — Port A bit 0 / Analog input channel 0 |
| Pino 3 | RA1/AN1 — Port A bit 1 / Analog input channel 1 |
| Pino 4 | RA2/AN2 — Port A bit 2 / Analog input channel 2 |
| Pino 5 | RA3/AN3/Vref+ — Port A bit 3 / Analog input channel 3 / ADC Vref+ |
| Pino 6 | RA4/T0CKI — Port A bit 4 / Timer 0 clock input |
| Pino 7 | RA5/AN4/SS — Port A bit 5 / Analog input channel 4 / SPI slave select |
| Pino 8 | RE0/RD/AN5 — Port E bit 0 / Parallel slave port read / Analog input channel 5 |
| Pino 9 | RE1/WR/AN6 — Port E bit 1 / Parallel slave port write / Analog input channel 6 |
| Pino 10 | RE2/CS/AN7 — Port E bit 2 / Parallel slave port chip select / Analog input channel 7 |
| Pino 11 | Vdd — Positive supply voltage (4.0 V to 5.5 V) |
| Pino 12 | Vss — Ground reference |
| Pino 13 | OSC1/CLKIN — Crystal oscillator input / External clock input |
| Pino 14 | OSC2/CLKOUT — Crystal oscillator output / Clock output (Fosc/4) |
| Pino 15 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer 1 oscillator output / Timer 1 clock input |
| Pino 16 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer 1 oscillator input / Capture-Compare-PWM 2 |
| Pino 17 | RC2/CCP1 — Port C bit 2 / Capture-Compare-PWM 1 |
| Pino 18 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| Pino 19 | RD0/PSP0 — Port D bit 0 / Parallel slave port data bit 0 |
| Pino 20 | RD1/PSP1 — Port D bit 1 / Parallel slave port data bit 1 |
| Pino 21 | RD2/PSP2 — Port D bit 2 / Parallel slave port data bit 2 |
| Pino 22 | RD3/PSP3 — Port D bit 3 / Parallel slave port data bit 3 |
| Pino 23 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| Pino 24 | RC5/SDO — Port C bit 5 / SPI data out |
| Pino 25 | RC6/TX/CK — Port C bit 6 / USART async transmit / USART sync clock |
| Pino 26 | RC7/RX/DT — Port C bit 7 / USART async receive / USART sync data |
| Pino 27 | RD4/PSP4 — Port D bit 4 / Parallel slave port data bit 4 |
| Pino 28 | RD5/PSP5 — Port D bit 5 / Parallel slave port data bit 5 |
| Pino 29 | RD6/PSP6 — Port D bit 6 / Parallel slave port data bit 6 |
| Pino 30 | RD7/PSP7 — Port D bit 7 / Parallel slave port data bit 7 |
| Pino 31 | Vss — Ground reference |
| Pino 32 | Vdd — Positive supply voltage (4.0 V to 5.5 V) |
| Pino 33 | RB0/INT — Port B bit 0 / External interrupt input |
| Pino 34 | RB1 — Port B bit 1 |
| Pino 35 | RB2 — Port B bit 2 |
| Pino 36 | RB3/PGM — Port B bit 3 / Low-voltage programming input |
| Pino 37 | RB4 — Port B bit 4 |
| Pino 38 | RB5 — Port B bit 5 |
| Pino 39 | RB6/PGC — Port B bit 6 / In-circuit serial programming clock |
| Pino 40 | RB7/PGD — Port B bit 7 / In-circuit serial programming data |
| Pino 41 | Vss — Ground reference |
| Pino 42 | Vdd — Positive supply voltage (4.0 V to 5.5 V) |
| Pino 43 | NC — Not connected (per datasheet) |
| Pino 44 | NC — Not connected (per datasheet) |
Aplicações típicas
PIC16C74BT-04E/PT é adequado para 6 aplicaçãos: Automotive Body Control Modules, Industrial Sensor Signal Conditioning, HVAC Damper and Valve Controllers, Low-Speed DC Motor Drivers, Consumer Appliance User Interfaces, Battery-Powered Telemetry Nodes.
Automotive Body Control Modules
The PIC16C74BT-04E/PT's automotive E-grade (-40C to +125C) and 33 digital I/O make it a strong fit for body-control ECUs that switch lighting, wipers, and accessory relays. Its 4 MHz RISC core handles 1 MIPS, which is more than enough for body-domain state machines and PWM dimming. The on-chip 8-channel 8-bit ADC reads thermistor, potentiometer, and battery-sense inputs directly, eliminating external signal conditioning.
Recomendado
Industrial Sensor Signal Conditioning
The 8-channel 8-bit ADC and USART peripherals enable the PIC16C74BT-04E/PT to act as a multi-channel sensor front-end, digitizing thermocouple bridges, pressure transducers, and 4-20 mA loops into serial data for a host PLC. With 192 bytes of RAM and 7 KB of OTP, it can host calibration tables and linearization routines on-chip. The 4.0-5.5 V supply matches industrial 5 V rails directly.
Recomendado
HVAC Damper and Valve Controllers
For HVAC damper actuators and proportional valves, the PIC16C74BT-04E/PT combines the capture/compare/PWM module with the 33 I/O lines to drive multiple servo outputs and read position feedback. The PIC16 RISC core delivers deterministic interrupt latency, critical for closed-loop valve control where jitter would translate into actuator hunting. Brown-out Reset and Watchdog Timer protect against supply sag during compressor inrush.
Recomendado
Low-Speed DC Motor Drivers
The PIC16C74BT-04E/PT drives brushed DC motors up to a few hundred RPM through PWM control from its CCP module and discrete H-bridge FETs. The 33 I/O pins allow multi-axis control, with the USART relaying telemetry back to a higher-level controller. OTP memory locks the firmware against field tampering, which is useful in commercial appliance and vending machine applications.
Recomendado
Consumer Appliance User Interfaces
In washing machines, dishwashers, and microwave ovens, the PIC16C74BT-04E/PT scans keypad matrices, drives LED/LCD displays, and times appliance cycles with its three on-chip timers. The USART interfaces to inverter boards or wireless modules, while the ADC monitors motor current and temperature sensors. OTP memory at qty-1k pricing below USD 7 supports cost-sensitive consumer SKUs.
Recomendado
Battery-Powered Telemetry Nodes
Although the PIC16C74BT-04E/PT is not optimized for ultra-low-power designs, its SLEEP mode combined with Watchdog Timer wake-up allows duty-cycled telemetry in remote sensor installations. The ADC samples slow-changing analog inputs, and the USART transmits burst data before returning to sleep, dramatically extending battery life in remote solar-powered nodes.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16C74BT-04E/PT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16C74BT-04E/PQ | PIC16C74BT-04/PQ | PIC16C74B-04E/PQ | PIC16C65B-04I/PT |
|---|---|---|---|---|---|
| Package | 44-TQFP (PT) 10x10 mm | 44-MQFP (PQ) - equivalent SMT footprint | 44-MQFP (PQ) - equivalent SMT footprint | 44-MQFP (PQ) - equivalent SMT footprint | 44-TQFP (PT) - same package |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 7 KB (4K x 14) OTP EPROM | 7 KB OTP EPROM - same | 7 KB OTP EPROM - same | 7 KB OTP EPROM - same | Smaller OTP - check code fit |
| RAM Size | 192 x 8 bytes | 192 x 8 bytes - same | 192 x 8 bytes - same | 192 x 8 bytes - same | 192 x 8 bytes - same |
| Maximum Clock | 4 MHz | 4 MHz - same | 4 MHz - same | 4 MHz - same | 4 MHz - same |
| Temperature Grade | Automotive -40C to +125C (E-grade) | Automotive -40C to +125C - same | Commercial 0C to +70C | Automotive -40C to +125C - same | Industrial -40C to +85C |
| Number of I/O | 33 | 33 - same | 33 - same | 33 - same | 33 - same |
| Supply Voltage | 4.0 V to 5.5 V | 4.0 V to 5.5 V - same | 4.0 V to 5.5 V - same | 4.0 V to 5.5 V - same | 4.0 V to 5.5 V - same |
| Memory Type | OTP EPROM | OTP EPROM - same | OTP EPROM - same | OTP EPROM - same | OTP EPROM - same |
Principais diferenciais
- Automotive E-grade temperature window (vs PIC16C74BT-04/PQ)
- Same TQFP-44 surface-mount footprint for modern reflow assembly (vs PIC16C74B-04E/L)
- Larger code space than mid-tier siblings (vs PIC16C65B-04I/PT)
Notas de projeto
Power the PIC16C74BT-04E/PT from a regulated 5 V rail with bulk decoupling of at least 10 uF tantalum plus a 100 nF ceramic placed within 5 mm of each Vdd pin. The part has three Vdd pins (11, 32, 42) and three Vss pins (12, 31, 41); each pair must be decoupled to ensure clean ADC and oscillator operation. Brown-out Reset should be enabled in the configuration word to prevent code execution during Vdd ramp-up below 4.0 V.
OTP EPROM memory can be programmed only once - there is no in-circuit erase. Use a socketed prototype or a PIC16F74 / PIC16F877A Flash equivalent for development, then migrate the verified firmware to the PIC16C74B OTP part for production. A failed or corrupted OTP programming leaves the part unusable, so always verify the device ID and blank-check before issuing the row-program command.
Route the 4 MHz crystal traces (OSC1/OSC2) as short as possible and guard them with a ground pour to avoid coupling noise into the ADC reference. Place the analog Vref+ trace (RA3) away from digital switching lines like RC6/RC7 (USART) to prevent ADC noise injection. The TQFP-44 package has a 10x10 mm body with 0.8 mm pitch leads, requiring 0.4 mm wide traces and 0.2 mm solder mask sliver.
Informações de conformidade
RoHS, REACH, lead-free, halogen-free, and conflict-mineral status were not stated in the Verified Web Data; users should request the latest material declaration from Microchip. The PIC16C OTP family is not formally AEC-Q100 qualified; designers requiring AEC-Q100 must select a Flash-based PIC16F/dsPIC equivalent.