PIC16C74A-10E/PQ - 8-bit 10MHz OTP MCU, 44-QFP | Microchip
MPN: PIC16C74A-10E/PQ ⚠ Lần mua cuốiPIC16C74A-10E/PQ Tóm tắt
The PIC16C7X family sits within the broader hierarchy of PIC mid-range microcontrollers, which in turn belongs to the 8-bit RISC MCU category. An 8-bit microcontroller integrates a CPU core, non-volatile program memory, working RAM, peripheral set, and I/O on a single die, enabling compact embedded designs where board space, cost, and predictable real-time response matter more than raw compute throughput. OTP versions target cost-sensitive high-volume applications where field re-programmability is not required.
Key features of the PIC16C74A include a 14-bit instruction word with single-cycle execution except for branches, an interrupt controller with context saving, power-saving SLEEP mode with typical standby current of 1 µA at 3 V / 32 kHz and 15 µA at 5 V / 4 MHz, and high sink/source drive capability of 25 mA per I/O line suitable for direct LED or relay driving. Capture/Compare/PWM modules support motor and power-control loops, while the synchronous serial port (SSP) implements both SPI and I²C master/slave operation.
Typical applications include industrial control front-ends, automotive body and HVAC modules, white-goods and appliance control boards, instrumentation, and consumer products requiring on-board A/D conversion and serial connectivity. The 44-QFP footprint also supports designs migrating from the older 40-pin PIC16C7x family when additional I/O or ADC channels are needed.
When designing with this part, remember that OTP memory cannot be reprogrammed in-circuit, so firmware verification should be completed on a windowed or flash equivalent (e.g. PIC16F74) before committing to OTP. Decoupling, oscillator layout, and MCLR reset discipline follow standard PIC mid-range guidance from the manufacturer datasheet. This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC16C74A-10E/PQ — 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 PIC16C74A-10E/PQ (cùng hình factor và footprint) — khác nhau ở Program Memory Size, Operating Temperature, Program Memory Type, Package, ADC.
PIC16C74A-10/PQ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C74A-04/PQ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C74A-10E/L
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C67-10E/PQ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C662-20/PQ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C65B-04/PQ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C74A-10E/PQ Tỷ lệ tối đa & tính chất điện
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 7 KB (4K x 14 words) |
| RAM Size | 192 bytes |
| CPU Core | 8-bit PIC mid-range RISC |
| Tần số xung maksimum | 10 MHz |
| Instruction Word Width | 14 bits |
| A/D Converter | 8-channel, 8-bit |
| I/O Pins | 33 |
| Timers | 2 x 8-bit + 1 x 16-bit |
| Capture/Compare/PWM Modules | Yes (CCP) |
| Communication Peripherals | USART (SCI), SSP (SPI / I²C), Parallel Slave Port |
| Operating Voltage Range | 2.5 V to 6.0 V |
| Khoảng nhiệt độ hoạt động | -40 °C to +125 °C (Extended) |
| I/O Sink/Source Current | 25 mA / 25 mA |
| Standby Current (3 V, 32 kHz) | 1 µA typical |
| Active Current (5 V, 4 MHz) | 15 µA typical |
| Hộp | 44-pin QFP (PQ) |
| Kiểu lắp đặt | Surface Mount |
Cấu hình chân PIC16C74A-10E/PQ
| Chân 1 | MCLR/VPP — Master Clear reset input / programming voltage |
| Chân 2 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| Chân 3 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| Chân 4 | RA2/AN2 — PORTA bit 2 / Analog input 2 |
| Chân 5 | RA3/AN3/VREF- — PORTA bit 3 / Analog input 3 / ADC VREF- |
| Chân 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Chân 7 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SSP slave select |
| Chân 8 | RE0/RD/AN5 — PORTE bit 0 / Parallel slave port read / Analog input 5 |
| Chân 9 | RE1/WR/AN6 — PORTE bit 1 / Parallel slave port write / Analog input 6 |
| Chân 10 | RE2/CS/AN7 — PORTE bit 2 / Parallel slave port chip select / Analog input 7 |
| Chân 11 | VDD — Positive supply (2.5 V to 6.0 V) |
| Chân 12 | VSS — Ground reference |
| Chân 13 | OSC1/CLKIN — Oscillator crystal input / external clock in |
| Chân 14 | OSC2/CLKOUT — Oscillator crystal output / clock out |
| Chân 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Chân 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 I/O |
| Chân 17 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM/capture |
| Chân 18 | RC3/SCK/SCL — PORTC bit 3 / SSP SPI clock / I²C clock |
| Chân 19 | RD0/PSP0 — PORTD bit 0 / Parallel slave port bit 0 |
| Chân 20 | RD1/PSP1 — PORTD bit 1 / Parallel slave port bit 1 |
| Chân 21 | RD2/PSP2 — PORTD bit 2 / Parallel slave port bit 2 |
| Chân 22 | RD3/PSP3 — PORTD bit 3 / Parallel slave port bit 3 |
| Chân 23 | RC4/SDI/SDA — PORTC bit 4 / SSP SPI data in / I²C data |
| Chân 24 | RC5/SDO — PORTC bit 5 / SSP SPI data out |
| Chân 25 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| Chân 26 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| Chân 27 | RD4/PSP4 — PORTD bit 4 / Parallel slave port bit 4 |
| Chân 28 | RD5/PSP5 — PORTD bit 5 / Parallel slave port bit 5 |
| Chân 29 | RD6/PSP6 — PORTD bit 6 / Parallel slave port bit 6 |
| Chân 30 | RD7/PSP7 — PORTD bit 7 / Parallel slave port bit 7 |
| Chân 31 | VSS — Ground reference |
| Chân 32 | VDD — Positive supply (2.5 V to 6.0 V) |
| Chân 33 | RB0/INT — PORTB bit 0 / External interrupt input |
| Chân 34 | RB1 — PORTB bit 1 |
| Chân 35 | RB2 — PORTB bit 2 |
| Chân 36 | RB3 — PORTB bit 3 |
| Chân 37 | RB4 — PORTB bit 4 |
| Chân 38 | RB5 — PORTB bit 5 |
| Chân 39 | RB6/PGC — PORTB bit 6 / In-circuit debugger clock |
| Chân 40 | RB7/PGD — PORTB bit 7 / In-circuit debugger data |
| 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
PIC16C74A-10E/PQ phù hợp cho 6 Áp dụngs: Industrial Sensor Monitoring, Appliance Control Boards, Automotive Body Electronics, Instrumentation and Data Logging, Consumer Remote Control and HMI, LED Lighting and Signage Control.
Industrial Sensor Monitoring
The PIC16C74A-10E/PQ is well-suited to industrial sensor-monitoring front-ends, where its 8-channel 8-bit ADC provides direct conditioning for thermistor, voltage, and process-variable inputs without an external converter. The 33 I/O pins handle digital sensors, keypads, and indicator LEDs, while the USART links the node to a host PLC or SCADA gateway. Operating across 2.5-6.0 V and -40 to +125 C, the part tolerates factory-floor supply variation and ambient temperature swings, while 25 mA sink/source drive directly fires relays or opto-isolators.
Được đề xuất
Appliance Control Boards
In washing machines, dishwashers, and HVAC indoor units, the PIC16C74A-10E/PQ integrates the user-interface scan, motor-driver handshake via PWM, and temperature monitoring through its on-board ADC. The 10 MHz instruction cycle gives 100 ns response, fast enough for closed-loop PID on a triac-fired heater or BLDC driver. The 44-QFP PQ package drops onto standard white-goods control PCBs, and the 25 mA I/O drive eliminates driver transistors for LED bar-graph displays and buzzer signaling.
Được đề xuất
Automotive Body Electronics
The PIC16C74A-10E/PQ's Extended temperature grade (-40 to +125 C) supports under-dash and body-electronics modules such as mirror controllers, seat-position memories, and HVAC blend-door actuators. The CCP modules generate PWM outputs for servo valves, while the SSP port drives SPI sensors or I/O expanders. Because the OTP PIC16C family is not AEC-Q100 qualified, this part targets non-safety automotive body applications where field re-programmability is not required.
Được đề xuất
Instrumentation and Data Logging
Portable test and measurement instruments use the PIC16C74A-10E/PQ to digitize sensor inputs via the 8-bit ADC, drive an LCD character display through PORTD, and stream results via USART to a host PC. The 7 KB OTP program memory accommodates calibration tables and a basic command interpreter, while 192 B RAM serves as a sample buffer. Low standby current (1 µA typical at 3 V / 32 kHz) extends battery life between measurements, and the wide 2.5-6.0 V supply range supports both lithium and 5 V regulated rails.
Được đề xuất
Consumer Remote Control and HMI
Handheld remote controllers, dimmers, and small HMI panels use the PIC16C74A-10E/PQ to scan keypads, drive IR or RF transmitters via PWM, and decode incoming IR via the Capture input. The 8-bit mid-range core is sufficient for protocol stacks like RC5, NEC, or simple proprietary codes, and the 33 I/O pins allow matrix keypads up to 8x8 without external scan logic. Low-power SLEEP mode (1 µA typical standby) maximizes battery life in remote controls.
Được đề xuất
LED Lighting and Signage Control
In architectural LED lighting drivers, channel-letter signs, and stage-lighting fixtures, the PIC16C74A-10E/PQ's 25 mA sink/source I/O directly drives low-current LED strings and MOSFET gates for higher-power strings. The CCP module provides PWM dimming with 10-bit resolution at the 10 MHz clock, and the USART interfaces to DMX-512 or proprietary lighting-control protocols. The Extended temperature range supports outdoor enclosure operation, and 7 KB OTP holds channel-mapping tables for medium-complexity installations.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C74A-10E/PQ — 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 | PIC16C74A-10/PQ | PIC16C74A-04/PQ | PIC16C74A-10E/L | PIC16C67-10E/PQ | PIC16C662-20/PQ |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-QFP (PQ) | 44-QFP (PQ) - same | 44-QFP (PQ) - same | 44-PLCC (L) - through-hole | 44-QFP (PQ) - same | 44-QFP (PQ) - same |
| Maximum Clock Frequency | 10 MHz | 10 MHz | 4 MHz | 10 MHz | 10 MHz | 20 MHz |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 |
| A/D Converter | 8-channel, 8-bit | 8-channel, 8-bit | 8-channel, 8-bit | 8-channel, 8-bit | 8-channel, 8-bit | 8-channel, 8-bit |
Bảo phân biệt quan trọng
- Extended temperature grade -40 to +125 C in 44-QFP (vsPIC16C74A-10/PQ)
- 10 MHz instruction throughput vs 4 MHz (vsPIC16C74A-04/PQ)
- Adds parallel slave port and PORTE over 40-pin variants (vsPIC16C74B-20I/P)
Ghi chú thiết kế
Decouple VDD/VSS pairs with 100 nF ceramic capacitors placed within 5 mm of each VDD pin (the 44-QFP exposes two VDD pins at positions 11 and 32, plus VSS at pins 12 and 31). For battery-backed or sleep-dominated applications, add a 10 µF bulk capacitor on the main VDD rail to handle transient inrush when the oscillator starts and peripherals wake. According to the Microchip PIC16C7X datasheet, holding MCLR high through a 10 kΩ pull-up with a 100 nF cap-to-VSS provides a clean power-on-reset ramp without false triggering.
Because the PIC16C74A is a One-Time-Programmable device, firmware cannot be patched once programmed. Prototype and verify all firmware on a windowed or flash-equivalent part (PIC16F74 or PIC16C74A JW) before committing to OTP production units. According to Microchip, OTP programming requires VPP ≈ 13 V on the MCLR/VPP pin and a verified configuration-word setting - any configuration error (e.g. wrong oscillator mode or watchdog enable) bricks the part irreversibly. Order a small over-build for engineering samples and use only verified production units on the final assembly line.
Route the OSC1/OSC2 traces short and symmetric to ground, with the crystal/ resonator located within 10 mm of the pins and guarded by a ground ring to reduce EMI susceptibility. According to the Microchip mid-range layout guidelines, the analog inputs (AN0-AN7) should be routed away from digital switching lines (PORTD parallel-slavc port, PWM outputs) and use a separate analog ground island tied to VSS at a single point. The parallel slave port on PORTD/RE0-RE2 should be length-matched if used with an external bus master.
Estimated: At the maximum Extended temperature grade of +125 °C ambient and with all 33 I/O pins sourcing 25 mA each, total I/O drive power can exceed 800 mW, raising junction temperature above the safe limit. Cap simultaneous high-current drive to roughly 8-10 pins active at 25 mA each (≈200-250 mW total) when the ambient approaches +125 °C. The 44-QFP has theta_JA of approximately 50-60 °C/W on a standard JEDEC 2S2P test board (per Microchip package thermal data); provide adequate copper pour and consider forced-air cooling in enclosed industrial cabinets.
Thông tin tuân thủ
The PIC16C74A OTP family is not AEC-Q100 qualified per Microchip product classification. RoHS / REACH / lead-free finish status was not confirmed in the verified web data and is marked as unknown - verify against the manufacturer datasheet or lot-specific Certificate of Compliance before procurement.
