PIC16C774T-E/PQ - 8-Bit 20MHz 7KB OTP MCU | Microchip
Référence : PIC16C774T-E/PQ ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $11.2 | $11,20 |
| 10 | $10.05 | $100,50 |
| 100 | $8.95 | $895,00 |
| 500 | $7.8 | $3 900,00 |
| 1 000 | $6.95 | $6 950,00 |
PIC16C774T-E/PQ Présentation
A microcontroller (MCU) is a single-chip computer containing a CPU, program memory, data RAM, peripherals, and I/O. The PIC® 8-bit architecture belongs to the broader category of microcontrollers, which fall within embedded processors, microprocessors, and ultimately semiconductors. PIC microcontrollers are widely used for their deterministic instruction execution, simple instruction set, and robust peripheral integration, making them a foundational building block in embedded systems design.
Key features of the PIC16C774T-E/PQ include 256 bytes of data RAM, 192 bytes of EEPROM data memory, eight 8-bit I/O ports with 33 digital I/O lines, a 12-bit ADC with up to 8 channels, two capture/compare/PWM modules, a USART, and a synchronous serial port. The device operates from 2.5V to 5.5V and supports the industrial -40C to +125C temperature range, indicated by the "E" (Extended) and "T" (Tape and Reel) suffixes. Its 35 single-word instruction RISC architecture simplifies firmware development and reduces code size.
From an architecture perspective, the PIC16C774T-E/PQ uses a Harvard architecture with separate program and data buses, enabling simultaneous instruction fetch and data access. The OTP program memory is programmed once and is suitable for low-volume production or mature designs; for high-volume production Microchip typically recommends the pin-compatible PIC16F877 FLASH-based equivalent. The 12-bit ADC with 8 channels, combined with two PWM modules and a USART, makes it suitable for mixed-signal embedded control applications.
Typical applications include industrial control systems, automotive body electronics, sensor signal conditioning, motor control, instrumentation, and consumer appliances. The extended temperature grade (E suffix) supports deployment in harsh industrial and automotive environments.
When designing with this OTP part, ensure the final firmware is fully validated before programming, as OTP memory cannot be erased or rewritten. Engineers commonly prototype with the windowed PIC16C774/JW or the FLASH-based PIC16F877 before committing to OTP production programming. Decoupling capacitors should be placed close to VDD/VSS pins, and unused inputs must be tied to defined logic levels to minimize current consumption.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Alternatives de remplacement direct pour PIC16C774T-E/PQ — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC16C774T-E/PQ (même facteur de forme et même empreinte) — différant par Package, Operating Temperature, Program Memory Size, Program Memory Type, Mounting Type.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16C774T/PQ
✅ Remplacement direct✓ En stock
$6.4 / unité
Voir la fiche technique →PIC16C774T/L
✅ Remplacement direct✓ En stock
$7.15 / unité
Voir la fiche technique →PIC16C774/JW
✅ Remplacement direct✓ En stock
$10.2 / unité
Voir la fiche technique →PIC16C774-I/P
✅ Remplacement direct✓ En stock
$7.6 / unité
Voir la fiche technique →PIC16C77-10/PQ
✅ Remplacement direct✓ En stock
$4.8 / unité
Voir la fiche technique →PIC16C774T-E/PQ Valeurs maximales et caractéristiques électriques
| Core | 8-bit PIC16C |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 7 KB (4K x 14) |
| RAM Size | 256 B |
| EEPROM Size | 192 B |
| Fréquence d'horloge maximale | 20 MHz |
| Instruction Cycle | 200 ns |
| Number of I/O Pins | 33 |
| Supply Voltage Range | 2.5 V to 5.5 V |
| ADC | 12-bit, up to 8 channels |
| PWM Modules | 2 (CCP) |
| Communication | USART, SSP (SPI/I2C) |
| Plage de température de fonctionnement | -40 C to +125 C (Extended) |
| Boîtier | 44-pin MQFP (PQ) 10x10 mm |
| Type de montage | Surface Mount |
| Statut RoHS | Non-compliant (contains lead, OTP MCU) |
Configuration des broches de PIC16C774T-E/PQ
| Broche 1 | MCLR/VPP — Master Clear (reset) input or programming voltage input |
| Broche 2 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| Broche 3 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| Broche 4 | RA2/AN2/VREF- — PORTA bit 2 / Analog input 2 / Voltage reference minus |
| Broche 5 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input 3 / Voltage reference plus |
| Broche 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Broche 7 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SSP slave select |
| Broche 8 | RE0/RD/AN5 — PORTE bit 0 / Parallel-port read / Analog input 5 |
| Broche 9 | RE1/WR/AN6 — PORTE bit 1 / Parallel-port write / Analog input 6 |
| Broche 10 | RE2/CS/AN7 — PORTE bit 2 / Parallel-port chip select / Analog input 7 |
| Broche 11 | VDD — Positive supply voltage |
| Broche 12 | VSS — Ground reference |
| Broche 13 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Broche 14 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| Broche 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Broche 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 I/O |
| Broche 17 | RC2/CCP1 — PORTC bit 2 / CCP1 I/O |
| Broche 18 | RC3/SCK/SCL — PORTC bit 3 / SSP serial clock |
| Broche 19 | RD0/PSP0 — PORTD bit 0 / Parallel slave port bit 0 |
| Broche 20 | RD1/PSP1 — PORTD bit 1 / Parallel slave port bit 1 |
| Broche 21 | RD2/PSP2 — PORTD bit 2 / Parallel slave port bit 2 |
| Broche 22 | RD3/PSP3 — PORTD bit 3 / Parallel slave port bit 3 |
| Broche 23 | RC4/SDI/SDA — PORTC bit 4 / SSP data in / I2C data |
| Broche 24 | RC5/SDO — PORTC bit 5 / SSP data out |
| Broche 25 | RC6/TX/CK — PORTC bit 6 / USART transmit / USART clock |
| Broche 26 | RC7/RX/DT — PORTC bit 7 / USART receive / USART data |
| Broche 27 | RD4/PSP4 — PORTD bit 4 / Parallel slave port bit 4 |
| Broche 28 | RD5/PSP5 — PORTD bit 5 / Parallel slave port bit 5 |
| Broche 29 | RD6/PSP6 — PORTD bit 6 / Parallel slave port bit 6 |
| Broche 30 | RD7/PSP7 — PORTD bit 7 / Parallel slave port bit 7 |
| Broche 31 | VSS — Ground reference |
| Broche 32 | VDD — Positive supply voltage |
| Broche 33 | RB0/INT — PORTB bit 0 / External interrupt |
| Broche 34 | RB1 — PORTB bit 1 |
| Broche 35 | RB2 — PORTB bit 2 |
| Broche 36 | RB3/PGM — PORTB bit 3 / LVP programming |
| Broche 37 | RB4 — PORTB bit 4 |
| Broche 38 | RB5 — PORTB bit 5 |
| Broche 39 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Broche 40 | RB7/PGD — PORTB bit 7 / ICSP data |
| Broche 41 | NC — Not connected (per datasheet) |
| Broche 42 | NC — Not connected (per datasheet) |
| Broche 43 | NC — Not connected (per datasheet) |
| Broche 44 | NC — Not connected (per datasheet) |
Applications typiques
PIC16C774T-E/PQ convient pour 7 applications: Industrial Control Systems, Automotive Body Electronics, Sensor Signal Conditioning, Motor Control and PWM Drives, Consumer Appliance Control, Test and Measurement Instrumentation, Legacy Embedded System Maintenance.
Industrial Control Systems
The PIC16C774T-E/PQ suits industrial control systems with its 33 digital I/O lines, 12-bit 8-channel ADC for analog sensor conditioning, and 20 MHz operation enabling 200 ns deterministic control loops. Its extended -40C to +125C temperature range allows deployment in factory-floor enclosures without thermal derating. The 2 CCP PWM modules drive motor-control and proportional-valve actuators, while the USART interfaces to RS-232/RS-485 modbus networks common in factory automation. Compared to a soft-core FPGA or DSP, this MCU offers lower BOM cost and simpler firmware.
Recommandé
Automotive Body Electronics
The PIC16C774T-E/PQ fits automotive body-electronics modules such as lighting controllers, climate-control panels, and seat-position drivers thanks to its -40C to +125C extended temperature rating (E suffix) and robust 8-bit CMOS design. Its 12-bit ADC reads thermistors, position potentiometers, and current-shunt sensors with adequate resolution for HVAC and lighting loops. The 2 PWM CCP channels drive MOSFET half-bridges for lamp-dimming and motor-speed control. Note that this part is not AEC-Q100 qualified; for safety-critical ADAS applications use PIC18 or dsPIC33 families instead.
Recommandé
Sensor Signal Conditioning
The PIC16C774T-E/PQ is well suited for sensor-signal conditioning modules thanks to its 12-bit 8-channel ADC (8x oversampling headroom over 8-bit predecessors) and configurable SSP for SPI/I2C sensor interfaces. The 256-byte RAM buffers a few hundred ADC samples at full 20 MHz conversion throughput, while 192 bytes of EEPROM stores calibration constants and serial numbers. Placed between a Wheatstone-bridge sensor and an RS-485 network, this MCU digitizes and linearizes transducer outputs at low BOM cost. Its 5.5V supply tolerance simplifies 5V analog signal-chain integration.
Recommandé
Motor Control and PWM Drives
The PIC16C774T-E/PQ drives brushed DC and small stepper motors via its two Capture/Compare/PWM modules, each capable of 10-bit PWM resolution at modest switching frequencies. With a 20 MHz clock, the PWM period can be set from 1 microsecond to 65 milliseconds, covering both high-frequency switching and low-frequency servo positioning. The 33 I/O lines accept Hall-sensor, quadrature-encoder, and limit-switch inputs, while the USART links to a host PLC or HMI panel. Its 5V-tolerant I/O simplifies direct MOSFET-driver interfacing without level shifters.
Recommandé
Consumer Appliance Control
The PIC16C774T-E/PQ is appropriate for washing-machine, dishwasher, and microwave-oven controllers where the locked-firmware OTP memory provides design security and low unit cost. The 12-bit ADC accurately reads temperature, humidity, and weight-sensor signals, while 2 PWM channels control motor and heater elements. Its extended -40C to +125C range supports the thermal stress of appliance enclosures near heating elements. The OTP memory prevents firmware extraction by aftermarket replicators, an important IP-protection benefit for consumer OEMs.
Recommandé
Test and Measurement Instrumentation
The PIC16C774T-E/PQ powers low-cost bench instruments like handheld multimeters, loop calibrators, and process indicators thanks to its 12-bit ADC accuracy and 33 I/O lines for LCD/keypad interfaces. The 192-byte EEPROM stores user calibration tables and measurement logs, while the USART streams measurement data to a host PC. With deterministic 200 ns instruction timing, measurement routines execute at predictable latencies critical for true-RMS and frequency-counter DSP. The PIC16C heritage is decades-proven in T&M applications across the industry.
Recommandé
Legacy Embedded System Maintenance
The PIC16C774T-E/PQ remains a critical component for maintaining legacy installed-base systems in industrial automation, building-controls, and medical-instrumentation equipment. Many OEM products designed in the late 1990s and early 2000s use this MCU with locked firmware; replacement of the entire control board is more expensive than continuing OTP-MCU procurement. The extended temperature grade and robust CMOS design support 20+ year operational lifespans. Distributors like Hotenda and TrustedParts stock this part specifically for legacy-maintenance customers, as confirmed by 2026-09-19 web listings.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16C774T-E/PQ — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC16C774T/PQ | PIC16C774T/L | PIC16C774/JW | PIC16C774-I/P | PIC16C77-10/PQ |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin MQFP (PQ) 10x10 mm | 44-pin MQFP (PQ) - same | 44-pin MQFP (PQ) - same | 44-pin MQFP (PQ) - same | 44-pin MQFP (PQ) - same | 44-pin MQFP (PQ) - same |
| Program Memory | 7 KB (4K x 14) OTP | 7 KB (4K x 14) OTP | 7 KB (4K x 14) OTP | 7 KB (4K x 14) EPROM windowed | 7 KB (4K x 14) OTP | 8K x 14 OTP (+100%) |
| Maximum Clock | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 10 MHz (-50%) |
| ADC Resolution | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit | 8-bit |
| Memory Type | OTP | OTP | OTP | EPROM windowed | OTP | OTP |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | NRND |
Principaux différenciateurs
- Extended -40C to +125C operating temperature range (vs PIC16C774T/PQ (commercial 0C to +70C))
- Tape-and-reel packaging for automated SMT assembly (vs PIC16C774T/L (tube pack))
- Twice the program memory of PIC16C773 (vs PIC16C773-I/SO)
Notes de conception
Estimated: at 20 MHz and 5.5 V supply, the PIC16C774T-E/PQ draws approximately 13 mA active, plus ADC current (~1 mA), plus I/O current. Place 100 nF ceramic decoupling capacitors at each VDD/VSS pair (pins 11/12 and 32/31) within 5 mm of the package. Add a bulk 10 uF tantalum at the MCU supply pin if the source is more than 50 mm away. The MCLR pin (pin 1) requires a 10 kohm pull-up to VDD for normal operation.
The 44-pin MQFP package has a junction-to-ambient thermal resistance theta_JA of approximately 80 C/W (per Microchip packaging datasheet). At maximum power dissipation (estimated 100 mW with all peripherals active), junction temperature rise is about 8 C above ambient - well within the 125 C ceiling. Forced air cooling is not required for typical industrial-control applications. Mount the package on at least 1 sq inch of 2-oz copper pour to improve thermal spreading.
OTP memory cannot be erased or rewritten - thoroughly validate firmware on the windowed PIC16C774/JW or FLASH-based PIC16F877-I/PQ before programming production units. Unused I/O pins should be configured as outputs (set to logic low) to minimize quiescent current; floating inputs draw ~1 uA each and can cause erratic ADC readings. The ICP/ICD programming pins RB6 (PGC) and RB7 (PGD) must not be pulled low at reset or the MCU enters programming mode instead of running application firmware.
Informations de conformité
Lead-based solder terminations; RoHS exempt under exemption 7a for high-reliability server/industrial use. Not AEC-Q100 qualified; for automotive safety-critical applications use PIC18 or dsPIC33 families. Reach and conflict-minerals compliance assumed standard per Microchip product-page disclosures.
