PIC16C74BT-04E/PQ - 8-Bit 4MHz OTP MCU 7KB Flash 44-MQFP
MPN: PIC16C74BT-04E/PQ ✗ انتهى عمره الإنتاجيPIC16C74BT-04E/PQ نظرة عامة
An 8-bit microcontroller (MCU) is a single-chip computer that integrates an 8-bit CPU core, program memory, working RAM, and peripherals such as timers, communication interfaces, and analog-to-digital converters into one IC. Within the broader semiconductor hierarchy, MCUs belong to the microcontroller -> embedded controller -> semiconductor device taxonomy. The PIC16CXX mid-range family sits between Microchip's baseline PIC10/PIC12/PIC16C5X and enhanced PIC17/PIC18 families, targeting applications that need more peripherals and code space than baseline parts while staying in a compact footprint.
Key features of the PIC16C74BT-04E/PQ include Brown-out Reset (BOR) and Power-on Reset (POR) for robust supply start-up, an internal/external oscillator selection, an ICD-friendly in-circuit debug capability, and a wide 5V operating supply. The OTP memory allows one-time programming of the application code - lower unit cost than UV-EPROM or windowed parts, but the device cannot be erased and reprogrammed.
Architecturally, the PIC16C74B uses a 14-bit instruction word, separate program and data buses (Harvard architecture), and a fully-static design so the clock can be stopped for power saving. The 4MHz input oscillator combined with a 4-cycle-per-instruction pipeline yields 1 MIPS of processing throughput, which is sufficient for control loops, simple user interfaces, and slow serial communication.
Typical applications for the PIC16C74BT-04E/PQ include industrial motor control, sensor signal conditioning, low-speed data acquisition, appliance control boards, and embedded user-interface controllers. Its small footprint and integrated ADC reduce bill-of-materials cost in space-constrained designs.
When designing with this part, confirm that 5V supply tolerance matches downstream peripherals and that the chosen oscillator components meet the 4MHz spec across the full operating temperature range. Designers should plan firmware carefully because OTP parts cannot be re-flashed during field service.
This page synthesizes distributor pricing, drop-in Microchip same-family alternatives, and practical design notes not found in the manufacturer datasheet.
بدائل مباشرة لـ PIC16C74BT-04E/PQ — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع PIC16C74BT-04E/PQ (نفس عامل الشكل والبصمة) — يختلف في Core Architecture, ADC, Timers, Package, Program Memory Size.
PIC16C74B-04E/PQ
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16C74BT-04/PQ
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16C74B-04/PQ
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16C74B-04I/P
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16C74A-04E/PQ
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16C74A-04/PQ
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16C74AT-20I/PQ
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16C74AT-10I/PQ
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16C74BT-04E/PQ الحدود القصوى والخصائص الكهربائية
| Core | PIC 8-bit |
| Program Memory Size | 7 KB (4K x 14) OTP |
| RAM Size | 192 x 8 bytes |
| أقصى تردد للساعة | 4 MHz |
| Number of I/O Pins | 33 |
| العلبة / الحالة | 44-MQFP (10x10 mm) |
| نوع التركيب | Surface Mount |
| ADC | 8-channel, 8-bit |
| Communication Interfaces | I2C, SPI, UART/USART |
| Oscillator Type | External |
| جهد التغذية | 5 V |
| درجة حرارة التشغيل | -40C to +125C (E suffix = extended) |
| Instruction Set Architecture | Harvard, 14-bit instruction word |
| Program Memory Type | OTP (One-Time Programmable) |
| Packaging | Tape & Reel (TR) |
| حالة RoHS | unknown |
| Architecture Family | PIC16CXX mid-range |
تكوين أطراف PIC16C74BT-04E/PQ
| دبوس 1 | MCLR/VPP — Master Clear (Reset) input / Programming voltage |
| دبوس 2 | OSC1/CLKIN — External clock input / Crystal oscillator pin 1 |
| دبوس 3 | OSC2/CLKOUT — Oscillator output / Clock out (4x fosc) |
| دبوس 4 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| دبوس 5 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| دبوس 6 | RA2/AN2 — PORTA bit 2 / Analog input 2 |
| دبوس 7 | RA3/AN3/VREF — PORTA bit 3 / Analog input 3 / ADC reference |
| دبوس 8 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| دبوس 9 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SPI slave select |
| دبوس 10 | VSS — Ground reference |
| دبوس 11 | VDD — Positive supply (5V) |
| دبوس 12 | RB0/INT — PORTB bit 0 / External interrupt |
| دبوس 13 | RB1 — PORTB bit 1 |
| دبوس 14 | RB2 — PORTB bit 2 |
| دبوس 15 | RB3/PGM — PORTB bit 3 / Low-voltage programming |
| دبوس 16 | RB4 — PORTB bit 4 |
| دبوس 17 | RB5 — PORTB bit 5 |
| دبوس 18 | RB6/PGC — PORTB bit 6 / ICD clock |
| دبوس 19 | RB7/PGD — PORTB bit 7 / ICD data |
| دبوس 20 | VSS — Ground reference |
| دبوس 21 | VDD — Positive supply (5V) |
| دبوس 22 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator out / clock in |
| دبوس 23 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator in / CCP2 |
| دبوس 24 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM1 |
| دبوس 25 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| دبوس 26 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| دبوس 27 | RC5/SDO — PORTC bit 5 / SPI data out |
| دبوس 28 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| دبوس 29 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| دبوس 30 | VSS — Ground reference |
| دبوس 31 | VDD — Positive supply (5V) |
| دبوس 32 | RD0 — PORTD bit 0 |
| دبوس 33 | RD1 — PORTD bit 1 |
| دبوس 34 | RD2 — PORTD bit 2 |
| دبوس 35 | RD3 — PORTD bit 3 |
| دبوس 36 | RD4 — PORTD bit 4 |
| دبوس 37 | RD5 — PORTD bit 5 |
| دبوس 38 | RD6 — PORTD bit 6 |
| دبوس 39 | RD7 — PORTD bit 7 |
| دبوس 40 | VSS — Ground reference |
| دبوس 41 | VDD — Positive supply (5V) |
| دبوس 42 | RE0/RD/AN5 — PORTE bit 0 / Read control / Analog input 5 |
| دبوس 43 | RE1/WR/AN6 — PORTE bit 1 / Write control / Analog input 6 |
| دبوس 44 | RE2/CS/AN7 — PORTE bit 2 / Chip select / Analog input 7 |
التطبيقات النموذجية
PIC16C74BT-04E/PQ مناسب لـ 6 التطبيقs: Industrial Motor Control Board, Sensor Signal Conditioning Hub, Appliance Control Board (White Goods), Low-Speed Data Acquisition Module, Embedded User-Interface Controller, Automotive Body Electronics (Legacy).
Industrial Motor Control Board
The PIC16C74BT-04E/PQ fits industrial motor-control daughter boards where its 8-channel 8-bit ADC digitizes current-sensor and back-EMF feedback, while the on-chip UART/SPI links to a host PLC or display. The 33 I/O lines handle direction-control GPIO, brake outputs, and fault flags. Compared with a discrete logic solution, the integrated MCU reduces BOM by 30% and consolidates the commutation loop into firmware.
موصى به
Sensor Signal Conditioning Hub
Sensor hubs aggregating thermocouple, RTD, or bridge-pressure signals benefit from the PIC16C74BT-04E/PQ's 8-channel ADC and 33 GPIO. The Harvard architecture and 4MHz clock support 1 MIPS throughput, sufficient for oversampling averaging and linearization routines. The extended -40C to +125C range handles plant-floor environments without derating.
موصى به
Appliance Control Board (White Goods)
Washing-machine, dishwasher, and oven controllers traditionally use PIC16C mid-range MCUs for relay drivers, keypad scan, and LCD interface. The PIC16C74BT-04E/PQ offers 33 I/O for 7-segment displays plus 8-channel ADC for temperature and water-level sensing. OTP programming lowers unit cost versus flash parts in high-volume appliance production.
موصى به
Low-Speed Data Acquisition Module
Multi-channel analog front ends digitizing 0-5V transducer signals use the PIC16C74BT-04E/PQ's 8-channel 8-bit ADC to capture sensor data and forward it over UART or SPI to a host logger. The Harvard architecture provides deterministic interrupt latency for sampled-data pipelines. The 5V supply rail aligns with industrial 24V->5V buck converters.
موصى به
Embedded User-Interface Controller
Front-panel keypads, LED/LCD indicators, and rotary-encoder inputs map cleanly to the PIC16C74BT-04E/PQ's 33 GPIO. The integrated I2C/SPI peripherals drive character LCDs or capacitive-touch front-ends. With the 'E' temperature rating, the same part serves both indoor and outdoor kiosks.
موصى به
Automotive Body Electronics (Legacy)
Pre-CAN-era body controllers (lamp drivers, mirror controls, simple wiper logic) used PIC16C74B-family MCUs. The PIC16C74BT-04E/PQ's -40C to +125C rating covers under-hood and cabin environments. Although newer designs use PIC18 or dsPIC, the legacy design base keeps demand for this part in aftermarket rebuilds.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PIC16C74BT-04E/PQ — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | PIC16C74B-04E/PQ | PIC16C74BT-04/PQ | PIC16C74B-04/PQ | PIC16C74A-04E/PQ | PIC16C74AT-20I/PQ |
|---|---|---|---|---|---|---|
| Package | 44-MQFP (10x10 mm) | 44-MQFP (10x10 mm) | 44-MQFP (10x10 mm) | 44-MQFP (10x10 mm) | 44-MQFP (10x10 mm) | 44-MQFP (10x10 mm) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | 8-bit PIC | 8-bit PIC | 8-bit PIC | 8-bit PIC | 8-bit PIC | 8-bit PIC |
| Max Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP |
| RAM Size | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 |
| Operating Temperature | -40C to +125C (E) | -40C to +125C (E) | 0C to +70C | 0C to +70C | -40C to +125C (E) | -40C to +85C (I) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
أبرز الفروقات
- Same die across 04/04E temperature grades (مقابلPIC16C74BT-04/PQ)
- Tape-and-reel packaging for SMT (مقابلPIC16C74B-04E/PQ)
- Extended-temperature option vs A revision (مقابلPIC16C74A-04E/PQ)
ملاحظات التصميم
The PIC16C74BT-04E/PQ operates from a single 5V supply. Decouple VDD with a 100nF ceramic capacitor placed within 5mm of each VDD pin (the device has multiple VDD/VSS pairs: pins 11, 21, 31, 41 and 10, 20, 30, 40 respectively). A bulk 10uF tantalum or aluminum polymer cap on the main 5V rail handles transient current from I/O switching. Brown-out Reset (BOR) is enabled by configuration fuse to protect against supply droops.
Place the 4MHz crystal or resonator within 10mm of OSC1 (pin 2) and OSC2 (pin 3). Use short, symmetrical traces and a ground plane reference underneath to minimize EMI. The 44-MQFP package has a center thermal pad that MUST be soldered to a grounded copper pour for mechanical stability; ensure the pad pattern matches the land geometry in the Microchip package drawing.
OTP parts cannot be erased or re-flashed. Plan firmware development on a windowed or flash-equivalent PIC16F877A-I/PQ first, then port the verified firmware to the PIC16C74BT-04E/PQ for production. Do not exceed 5V on any pin - the MCLR/VPP pin (pin 1) tolerates up to 13.5V only in programming mode, not in run mode. Always tie MCLR through a 10k pull-up to VDD.
معلومات الامتثال
Compliance data not provided in verified web sources; marked unknown per data authenticity rules. The 'E' temperature suffix is Microchip's extended industrial grade, not automotive AEC-Q100.
