PIC16C662T-04I/PT - 8-Bit 4MHz 7KB OTP MCU TQFP-44 | Microchip
MPN: PIC16C662T-04I/PT ✗ پایان تولیدPIC16C662T-04I/PT نمای کلی
An 8-bit microcontroller (MCU) is a small computer-on-a-chip that integrates a CPU, RAM, program memory, and peripherals into a single IC. The PIC16C family uses a RISC (Reduced Instruction Set Computer) Harvard architecture with 35 single-cycle instructions, delivering deterministic execution and a high MIPS-per-mHz ratio. PIC microcontrollers sit in the broader category of embedded MCUs -> microcontrollers -> integrated circuits -> semiconductors, and they form the backbone of countless industrial, consumer, and automotive subsystems. OTP memory allows one-time programming during manufacturing, making the PIC16C662 well suited to high-volume cost-sensitive applications where firmware stability is fixed at production time.
Key features of the PIC16C662T-04I/PT include 7KB (4K x 14) OTP program memory, 176 bytes of RAM, and operating voltage range of 4V to 6V. It integrates multiple peripherals: a 5-channel 8-bit A/D converter, two 8-bit timers and one 16-bit timer, a Watchdog Timer, an LCD driver module (up to 4 common, 32 segments typical), 33 digital I/O pins, and a synchronous serial port (SSP) supporting SPI and I2C. Industrial temperature grade and CMOS low-power technology make it suitable for embedded control panels.
The architecture follows Microchip's enhanced PIC16C mid-range core with 14-bit instruction width, supporting interrupts, hardware stack, and in-circuit serial programming (ICSP). Compared to flash-based F-series successors, the C-series OTP provides lower unit cost at high volume but does not support field reprogramming - this is an intentional design trade-off for stable production firmware.
Typical applications include appliance control boards, HVAC interface panels, industrial sensor readers, security keypads, automotive dashboard sub-modules, and any high-volume embedded control where OTP memory is acceptable. It is also common in legacy industrial systems that standardized on the PIC16C platform.
When designing with this part, note that the OTP memory requires programming during PCB assembly using a Microchip device programmer. Provide a clean 5V supply and respect the 4-6V operating range. The LCD driver module eliminates external LCD controller chips, reducing BOM cost in human-machine interface designs.
This page synthesizes distributor pricing, drop-in same-package alternatives (PIC16C662T-04E/PT, PIC16C662-04I/P family members), and practical design notes not aggregated on a single distributor page.
جایگزین‌های drop-in برای PIC16C662T-04I/PT — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای PIC16C662T-04I/PT (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Timers, Program Memory Size, Core Architecture, Operating Temperature, Package.
PIC16C662T-04E/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16C662T-20I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16C65BT-04I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16C65AT-04I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16C65A-04I/PT
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC16C64AT-04I/PT
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC16C662T-04I/PT حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core Architecture | PIC16C RISC (14-bit instruction) |
| Program Memory Type | OTP (One-Time-Programmable) |
| Program Memory Size | 7 KB (4K x 14) |
| RAM Size | 176 bytes |
| CPU Speed | 4 MHz (04 speed grade) |
| Supply Voltage (Vcc) | 4 V to 6 V |
| دمای کاری | -40 C to +85 C (Industrial, 'I' suffix) |
| Digital I/O Pins | 33 |
| A/D Converter | 5-channel, 8-bit |
| Timers | 2 x 8-bit + 1 x 16-bit + WDT |
| LCD Driver | Integrated, supports up to 4 common / 32 segments typical |
| Serial Interfaces | SSP (SPI / I2C) |
| بسته‌بندی | 44-TQFP (10x10 mm), T/R |
| نوع نصب | Surface Mount |
| وضعیت RoHS | ROHS3 Compliant (per distributor data) |
پیکربندی پین PIC16C662T-04I/PT
| پین 1 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| پین 2 | RA0/AN0 — PORTA bit 0 / analog input channel 0 |
| پین 3 | RA1/AN1 — PORTA bit 1 / analog input channel 1 |
| پین 4 | RA2/AN2 — PORTA bit 2 / analog input channel 2 |
| پین 5 | RA3/AN3/VREF — PORTA bit 3 / analog input 3 / voltage reference |
| پین 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| پین 7 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / SPI slave select |
| پین 8 | RE0/RD — PORTE bit 0 / read control for parallel slave port |
| پین 9 | RE1/WR — PORTE bit 1 / write control for parallel slave port |
| پین 10 | RE2/CS — PORTE bit 2 / chip select for parallel slave port |
| پین 11 | VDD — Positive supply voltage (5V) |
| پین 12 | VSS — Ground reference |
| پین 13 | OSC1/CLKIN — Oscillator input / external clock input |
| پین 14 | OSC2/CLKOUT — Oscillator output / clock output |
| پین 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / clock input |
| پین 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| پین 17 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM 1 |
| پین 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| پین 19 | RD0/PSP0 — PORTD bit 0 / parallel slave port bit 0 |
| پین 20 | RD1/PSP1 — PORTD bit 1 / parallel slave port bit 1 |
| پین 21 | RD2/PSP2 — PORTD bit 2 / parallel slave port bit 2 |
| پین 22 | RD3/PSP3 — PORTD bit 3 / parallel slave port bit 3 |
| پین 23 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| پین 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| پین 25 | RC6/TX/CK — PORTC bit 6 / USART transmit / clock |
| پین 26 | RC7/RX/DT — PORTC bit 7 / USART receive / data |
| پین 27 | RD4/PSP4 — PORTD bit 4 / parallel slave port bit 4 |
| پین 28 | RD5/PSP5 — PORTD bit 5 / parallel slave port bit 5 |
| پین 29 | RD6/PSP6 — PORTD bit 6 / parallel slave port bit 6 |
| پین 30 | RD7/PSP7 — PORTD bit 7 / parallel slave port bit 7 |
| پین 31 | VSS — Ground reference |
| پین 32 | VDD — Positive supply voltage (5V) |
| پین 33 | RB0/INT — PORTB bit 0 / external interrupt |
| پین 34 | RB1 — PORTB bit 1 |
| پین 35 | RB2 — PORTB bit 2 |
| پین 36 | RB3 — PORTB bit 3 |
| پین 37 | RB4 — PORTB bit 4 |
| پین 38 | RB5 — PORTB bit 5 |
| پین 39 | RB6/PGC — PORTB bit 6 / ICSP clock |
| پین 40 | RB7/PGD — PORTB bit 7 / ICSP data |
| پین 41 | SEG0 — LCD segment driver 0 |
| پین 42 | SEG1 — LCD segment driver 1 |
| پین 43 | COM0 — LCD common driver 0 |
| پین 44 | COM1 — LCD common driver 1 |
کاربردهای معمول
PIC16C662T-04I/PT مناسب است برای 7 کاربردs: Appliance Control Boards, HVAC Interface Panels, Industrial Sensor Readers, Security Keypads and Access Panels, Automotive Dashboard Sub-Modules, Consumer Electronics User Interfaces, Point-of-Sale Terminal Sub-Controllers.
Appliance Control Boards
The PIC16C662T-04I/PT fits appliance control boards because its on-chip LCD driver eliminates external display controller chips, reducing BOM cost in washing machines, microwaves, and dishwashers. Its 5-channel 8-bit ADC reads temperature, water level, and door sensors directly. The 33 I/O pins handle keypad scanning, relay drivers, and triac control. At 5V operation and -40 to +85 C industrial temperature, it survives the under-cabinet heat of a kitchen environment. The OTP memory is acceptable because appliance firmware rarely changes after UL/CE certification, and the lower unit cost compared to flash variants saves dollars at 100k+ annual volume.
پیشنهادی
HVAC Interface Panels
HVAC thermostat and control panels benefit from the PIC16C662T-04I/PT's integrated LCD driver, which supports 4-common 32-segment displays without external chips. The 4 MHz CPU is sufficient for PID temperature loop calculations and keypad debouncing. Industrial temperature rating handles attic and equipment-room thermal stress. The SSP (SPI/I2C) interface connects to external sensors for CO2, humidity, or wireless modules. OTP programming during board assembly prevents field tampering of calibration values - a deliberate security feature in commercial HVAC.
پیشنهادی
Industrial Sensor Readers
Industrial 4-20 mA loop monitors and multi-channel sensor readers use the PIC16C662T-04I/PT because its 5-channel 8-bit ADC handles multiple analog inputs and its 33 I/O bits drive indicator LEDs and relay outputs. The 4 MHz core processes linearization, scaling, and HART-style communication protocols. Industrial temperature grade supports factory-floor operation. OTP memory locks calibration coefficients permanently, preventing field drift in safety-monitored processes. The wide 4-6V supply tolerates unregulated 5V industrial rails with surge transients.
پیشنهادی
Security Keypads and Access Panels
Security keypads with LCD displays leverage the PIC16C662T-04I/PT's integrated LCD driver for status indication without an external controller. The 33 I/O pins drive a 4x4 matrix keypad, LED indicators, and a magnetic-stripe or Wiegand card reader interface. Industrial temperature ensures reliability in outdoor enclosures. OTP memory locks PIN-validation and credential storage code, reducing reverse-engineering risk compared to flash parts that can be read with a debugger. The SSP port interfaces to external EEPROM for audit-log retention.
پیشنهادی
Automotive Dashboard Sub-Modules
Automotive gauge clusters and secondary dashboard controllers historically used the PIC16C662T-04I/PT for its integrated LCD driver and 5V-tolerant I/O. The 33 digital I/O pins interface to backlight drivers, button matrices, and CAN/LIN transceivers. Note that this part is NOT AEC-Q100 qualified, so it is restricted to non-safety dashboard sub-modules (clock, trip computer, climate display) rather than critical powertrain functions. For AEC-Q100 qualified automotive PIC options, the PIC16F series with automotive grade suffix should be selected.
پیشنهادی
Consumer Electronics User Interfaces
Audio amplifiers, set-top boxes, and small kitchen appliances use the PIC16C662T-04I/PT to drive front-panel LCDs and read rotary encoders or pushbuttons. The integrated LCD driver saves 1-2 mm of PCB space and reduces external component count - critical for slim consumer enclosures. The 4 MHz CPU handles IR remote decoding (via SSP), volume knob quadrature, and display refresh. OTP programming locks manufacturer UI logic, preventing third-party firmware tampering. Industrial temperature rating is overkill for indoor use but provides margin for shelf placement near heat sources.
پیشنهادی
Point-of-Sale Terminal Sub-Controllers
Point-of-sale terminals and vending machine controllers use the PIC16C662T-04I/PT for its integrated LCD (showing price, total, status) and 5-channel ADC (reading coin acceptor signals and supply voltage). The 33 I/O pins drive bill acceptors, keypads, and dispensing relays. Industrial temperature handles outdoor vending cabinet heat. OTP programming locks fiscal regulations and tax tables per deployment region. The SSP port connects to a main controller or secure authentication module. Low unit cost makes it economical for high-volume vending rollouts.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای PIC16C662T-04I/PT — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | PIC16C662T-04E/PT | PIC16C662T-20I/PT | PIC16C65BT-04I/PT | PIC16C65AT-04I/PT |
|---|---|---|---|---|---|
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP |
| CPU Speed | 4 MHz | 4 MHz | 20 MHz | 4 MHz | 4 MHz |
| Temperature Grade | Industrial -40 to +85 C | Extended -40 to +125 C | Industrial -40 to +85 C | Industrial -40 to +85 C | Industrial -40 to +85 C |
| Memory Type | OTP | OTP | OTP | OTP | OTP |
| LCD Driver | Integrated | Integrated | Integrated | Integrated | Integrated |
| A/D Converter | 5-channel, 8-bit | 5-channel, 8-bit | 5-channel, 8-bit | 5-channel, 8-bit | 5-channel, 8-bit |
| Pin Count | 44 | 44 | 44 | 44 | 44 |
تفاوت‌های کلیدی
- Industrial temperature grade in standard configuration (در مقابلPIC16C662T-04E/PT)
- Lower unit cost through 4 MHz speed grade (در مقابلPIC16C662T-20I/PT)
- Integrated LCD driver eliminates external controller (در مقابلPIC16C65BT-04I/PT)
یادداشت‌های طراحی
The PIC16C662T-04I/PT operates from a single 4V to 6V supply. Place a 100 nF decoupling capacitor as close as possible to VDD pins (pins 11 and 32) and a bulk 10 uF tantalum or ceramic capacitor at the board power entry. The 5V supply tolerance accommodates unregulated industrial 5V rails but not 3.3V logic levels - level shifters are required when interfacing to 3.3V peripherals on the digital I/O. The analog reference (RA3/VREF) needs its own 100 nF bypass capacitor to minimize ADC noise.
The OTP (One-Time-Programmable) memory can only be programmed once - there is no field reprogramming. Ensure firmware is fully debugged and verified on a windowed or flash equivalent (such as PIC16F946-I/PT in the same TQFP-44 package) before committing to OTP programming during production. A programming failure on a populated PCB wastes the entire MCU. Always use Microchip's MPLAB REAL ICE or PICkit 3 with ICSP via RB6/PGC and RB7/PGD (pins 39 and 40) for in-circuit programming verification before OTP commit.
The TQFP-44 (10x10 mm) package has 0.8 mm lead pitch and requires careful PCB layout for reliable hand-soldering or rework. Use NSMD (Non-Solder Mask Defined) pads with 0.4 mm pad width and 0.2 mm solder mask expansion for best results. The exposed die pad is not present on this package, but ensure continuous ground plane underneath to provide thermal mass and EMI shielding. Place the 4 MHz crystal or resonator within 10 mm of pins 13-14 (OSC1/OSC2) with short traces and ground guard ring to minimize EMI.
The LCD driver outputs (SEG0/SEG1 on pins 41-42, COM0/COM1 on pins 43-44) drive relatively low currents but are high-impedance. Use short PCB traces to the LCD glass connector and avoid routing digital switching signals (PORTD parallel slave port, USART) adjacent to the LCD segment lines. Add a ground trace between LCD signals and digital I/O to prevent cross-talk that would appear as ghost segments on the display. If using the parallel slave port (PORTD + PORTE control signals), keep trace lengths matched and use a ground plane to control impedance.
اطلاعات انطباق
ROHS3 compliant per Heisener distributor listing (2026-09-18). Not AEC-Q100 qualified - not suitable for safety-critical automotive applications. Lead-free finish confirmed. Halogen-free status not explicitly stated in distributor data.
