PIC16F74T-E/ML - 8-bit PIC MCU, 7KB Flash, 44-VQFN | Microchip
MPN: PIC16F74T-E/ML ✓ Hoạt độngPIC16F74T-E/ML Tóm tắt
An 8-bit PIC microcontroller is a RISC-based Harvard-architecture device that integrates a CPU, non-volatile Flash program memory, SRAM data memory, and a rich set of peripherals on a single die. PIC microcontrollers sit within the broader hierarchy of microcontroller -> embedded controller -> semiconductor IC, and the PIC16F74 specifically belongs to the mid-range PIC16 family that bridges the baseline PIC10/12/16 and the high-performance PIC18/24 families. The 8-bit data path keeps instruction fetch and execution deterministic, which is favored in real-time control loops.
Key features of the PIC16F74 include an operating frequency up to 20 MHz, on-chip Flash program memory with self-programming support, 192 bytes of data RAM, 33 digital I/O lines, an 8-channel 8-bit ADC, three timer modules (Timer0, Timer1, Timer2), a Capture/Compare/PWM (CCP) module, an SSP, a USART, and a brown-out reset (BOR) circuit. The device operates across the standard PIC16F74 industrial voltage range and is offered in tape-and-reel ('T') packaging with the /ML QFN suffix.
Architecturally, the PIC16F74 uses a 14-bit instruction word with separate program and data buses, enabling simultaneous instruction fetch and operand read. The 8-bit ALU performs arithmetic, logic, and bit-manipulation operations in a single instruction cycle, which simplifies code generation for embedded developers. The integrated analog and digital peripherals are memory-mapped and configured via dedicated SFRs.
Typical applications for the PIC16F74T-E/ML include industrial control systems, sensor interfacing and data acquisition, motor control, automotive body electronics, white goods and appliance subsystems, and general-purpose embedded controllers requiring a 44-pin footprint with extended GPIOs. It is a strong fit where deterministic 8-bit control, on-board A/D conversion, and serial communication are needed.
When designing with this device, ensure the exposed thermal pad of the VQFN-44 package is soldered to a sufficient copper pour for heat dissipation and ground continuity. The 'E' suffix denotes the extended industrial temperature range, allowing reliable operation across harsh environments, which must be confirmed against the device errata and datasheet electrical characteristics before final qualification.
This page synthesizes distributor pricing, drop-in alternatives from Microchip's PIC16F family, comparison parameters, and practical design notes that are not collated in the manufacturer datasheet alone, helping engineers quickly evaluate fit and sourcing options for the PIC16F74T-E/ML.
Bộ thay thế dễ dàng lắp đặt cho PIC16F74T-E/ML — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16F74T-E/ML (cùng hình factor và footprint) — khác nhau ở Package, Serial Interfaces, Timers, Operating Temperature, ADC.
PIC16F74-E/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F747-E/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F74-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F74T-E/ML Tỷ lệ tối đa & tính chất điện
| Core | PIC16 (8-bit RISC) |
| Instruction Set Width | 14-bit |
| Program Memory Type | Flash |
| Program Memory Size | 7 KB |
| Data RAM | 192 B |
| Maximum Operating Frequency | 20 MHz |
| Instruction Execution Time | 200 ns (5 MIPS) |
| Number of Instructions | 35 (single-word) |
| I/O Pins | 33 |
| ADC | 8 channels, 8-bit resolution |
| Timers | 3 (Timer0, Timer1, Timer2) |
| CCP Modules | 1 (Capture/Compare/PWM) |
| Serial Interfaces | SSP, USART |
| Brown-Out Reset | Yes |
| Hộp | 44-pin VQFN (ML) with exposed pad |
| Kiểu lắp đặt | Surface Mount |
| Khoảng nhiệt độ hoạt động | -40C to +125C (E = extended industrial) |
| Packaging Form | Tape & Reel (T suffix) |
| Trạng thái RoHS | Compliant |
| Cấp MSL | 3 (168 hours) |
Cấu hình chân PIC16F74T-E/ML
| Chân 1 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| Chân 2 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| Chân 3 | RA2/AN2 — PORTA bit 2 / Analog input 2 |
| Chân 4 | RA3/AN3/VREF — PORTA bit 3 / Analog input 3 / ADC reference |
| Chân 5 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Chân 6 | RA5/AN4/CCP2 — PORTA bit 5 / Analog input 4 / CCP2 output |
| Chân 7 | OSC1/CLKIN — Oscillator input / external clock input |
| Chân 8 | OSC2/CLKOUT — Oscillator output / clock output |
| Chân 9 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Chân 10 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Chân 11 | RC2/CCP1 — PORTC bit 2 / CCP1 I/O |
| Chân 12 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Chân 13 | RD0/PSP0 — PORTD bit 0 / Parallel slave port bit 0 |
| Chân 14 | RD1/PSP1 — PORTD bit 1 / Parallel slave port bit 1 |
| Chân 15 | RD2/PSP2 — PORTD bit 2 / Parallel slave port bit 2 |
| Chân 16 | RD3/PSP3 — PORTD bit 3 / Parallel slave port bit 3 |
| Chân 17 | RD4/PSP4 — PORTD bit 4 / Parallel slave port bit 4 |
| Chân 18 | RD5/PSP5 — PORTD bit 5 / Parallel slave port bit 5 |
| Chân 19 | RD6/PSP6 — PORTD bit 6 / Parallel slave port bit 6 |
| Chân 20 | RD7/PSP7 — PORTD bit 7 / Parallel slave port bit 7 |
| Chân 21 | VSS — Ground reference |
| Chân 22 | VDD — Positive supply voltage |
| Chân 23 | RB0/INT — PORTB bit 0 / External interrupt |
| Chân 24 | RB1 — PORTB bit 1 |
| Chân 25 | RB2 — PORTB bit 2 |
| Chân 26 | RB3/PGM — PORTB bit 3 / Low-voltage programming input |
| Chân 27 | RB4 — PORTB bit 4 |
| Chân 28 | RB5 — PORTB bit 5 |
| Chân 29 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Chân 30 | RB7/PGD — PORTB bit 7 / ICSP data |
| Chân 31 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Chân 32 | RC5/SDO — PORTC bit 5 / SPI data out |
| Chân 33 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| Chân 34 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| Chân 35 | RE0/RD/AN5 — PORTE bit 0 / Read control / Analog input 5 |
| Chân 36 | RE1/WR/AN6 — PORTE bit 1 / Write control / Analog input 6 |
| Chân 37 | RE2/CS/AN7 — PORTE bit 2 / Chip select / Analog input 7 |
| Chân 38 | MCLR/VPP — Master clear reset / programming voltage |
| Chân 39 | NC — Not connected (per datasheet) |
| Chân 40 | NC — Not connected (per datasheet) |
| Chân 41 | NC — Not connected (per datasheet) |
| Chân 42 | NC — Not connected (per datasheet) |
| Chân 43 | NC — Not connected (per datasheet) |
| Chân 44 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC16F74T-E/ML phù hợp cho 6 Áp dụngs: Industrial Sensor Monitoring, Motor Control and Drive Signaling, Appliance Control Boards, Automotive Body Electronics, Data Acquisition Front-Ends, General-Purpose Embedded Controllers.
Industrial Sensor Monitoring
The PIC16F74T-E/ML's 8-channel 8-bit ADC and 33 I/O pins let it interface with multiple analog sensors (temperature, pressure, flow) in industrial monitoring nodes. The 20 MHz / 5 MIPS core samples each channel at deterministic intervals, while the extended -40C to +125C temperature range handles factory-floor conditions. Its 7KB Flash stores calibration tables and linearization curves; the USART streams telemetry to a host PLC or gateway.
Được đề xuất
Motor Control and Drive Signaling
The PIC16F74T-E/ML integrates one Capture/Compare/PWM (CCP) module and three timers, sufficient to generate PWM drive signals for small DC or stepper motors and to capture feedback from Hall sensors or optical encoders. With 7KB Flash, the firmware can implement PID control loops and soft-start routines. The 44-VQFN compact footprint fits inside motor-control PCBs where space is constrained, and the exposed pad aids thermal dissipation under sustained drive currents.
Được đề xuất
Appliance Control Boards
White goods such as washing machines, dishwashers, and HVAC controllers use the PIC16F74T-E/ML because it integrates an 8-bit ADC, USART, and PWM in a compact 44-VQFN exposed-pad package. The 7KB Flash holds application code and user-interface state machines, while 192 bytes of RAM supports small RTOS or cooperative-scheduler designs. Brown-out reset (BOR) ensures clean recovery from supply brown-outs common in appliance line-voltage environments.
Được đề xuất
Automotive Body Electronics
Body-control modules (lighting, seat controllers, mirror adjusters) deploy the PIC16F74T-E/ML for its extended -40C to +125C range and integrated peripherals. The PIC16F74's 8-channel ADC reads switch panels and sensor inputs; the USART links to LIN or CAN bridges for in-vehicle networking. The 44-VQFN surface-mount form factor supports high-density PCB layouts typical of body-electronics ECUs. Note: AEC-Q100 grade is not specifically listed for this part - verify with Microchip for safety-critical automotive use.
Được đề xuất
Data Acquisition Front-Ends
The PIC16F74T-E/ML serves as a multi-channel data-acquisition front-end, with its 8-channel 8-bit ADC sampling analog signals at up to 20 MHz core clock. The 192-byte RAM buffers recent samples before block transfer over USART/SSP to a host processor. The 7KB Flash stores calibration coefficients and protocol stacks. The exposed-pad VQFN-44 package provides good thermal performance when the ADC is sampling at high duty cycle.
Được đề xuất
General-Purpose Embedded Controllers
For cost-sensitive 8-bit embedded designs, the PIC16F74T-E/ML delivers 7KB Flash, 192 bytes RAM, three timers, one CCP, SSP, and USART in a 44-VQFN surface-mount package. The 35 single-word instructions minimize firmware complexity and speed time-to-market. The exposed thermal pad simplifies PCB layout for compact modules such as IoT edge nodes, sensor hubs, and consumer peripherals where stable 8-bit control is sufficient.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F74T-E/ML — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC16F74-E/ML | PIC16F747-E/ML | PIC16F74-I/ML |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin VQFN (ML) | 44-pin VQFN (ML) - same | 44-pin VQFN (ML) - same | 44-pin VQFN (ML) - same |
| Program Memory (Flash) | 7 KB | 7 KB | 7 KB | 7 KB |
| Data RAM | 192 B | 192 B | 192 B | 192 B |
| Maximum Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| I/O Pins | 33 | 33 | 36 | 33 |
| ADC Channels x Resolution | 8 x 8-bit | 8 x 8-bit | 8 x 8-bit | 8 x 8-bit |
| CCP Modules | 1 | 1 | 2 (enhanced) | 1 |
| Operating Temperature Range | -40C to +125C (E) | -40C to +125C | -40C to +125C | -40C to +85C |
| Packaging Form | Tape & Reel (T) | Tray/Tube | Tray/Tube | Tray/Tube |
Bảo phân biệt quan trọng
- Tape-and-reel packaging for high-volume SMD assembly (vsPIC16F74-E/ML)
- Extended -40C to +125C temperature range (vsPIC16F74-I/ML)
- Enhanced CCP/USART peripherals in same footprint (vsPIC16F74-E/ML)
Ghi chú thiết kế
Estimated: The 44-pin VQFN (ML) package relies on the exposed thermal pad for heat removal. For sustained ADC sampling at high duty cycle, calculate total power as P = Vdd x I_dd. With Vdd=5V and I_dd~15 mA typical, P is well below 100 mW; even at maximum I_dd=40 mA, P=200 mW and the exposed pad connected to at least 1 square inch of copper pour keeps junction rise within ratings. Always solder the EP for thermal and electrical continuity.
Place a 0.1 uF decoupling capacitor as close as possible to the VDD pin (pin 22 in this 44-VQFN package) and a bulk capacitor (e.g., 10 uF tantalum or ceramic) near the supply input. Provide a clean analog ground reference for ADC accuracy by using a star-ground topology or by isolating the AVSS/AGND (where applicable) from noisy digital returns. Place the MCLR/VPP pull-up (typically 10 kOhm) close to the MCLR pin to avoid spurious resets.
Always configure unused I/O pins as outputs (set the corresponding TRIS bit to 0 and drive the LAT bit low) to minimize current consumption in sleep mode. Do not float the MCLR pin - if not used for external reset, tie it to VDD through a 10 kOhm resistor. When using the ADC, allow adequate acquisition time (TACQ) per the datasheet electrical characteristics to avoid channel-to-channel crosstalk. Verify the configuration bits (FOSC, WDTE, BOREN, PWRTE) match your design intent before programming.
Route the oscillator traces (OSC1/OSC2) symmetrically and keep them short - long paths act as antennas and degrade clock stability. Place the crystal or resonator within a few millimeters of the OSC pins and guard the traces with a ground pour. For SSP/USART signals, match trace lengths where timing matters and avoid routing parallel to switching power traces. Keep the EP copper pour clear of signal vias to maintain a low-inductance ground.
Thông tin tuân thủ
RoHS and lead-free per Microchip product page. AEC-Q100 qualification status not specified for this part; consult Microchip for safety-critical automotive applications. Halogen-free per Microchip environmental certification.