PIC16C662T-04I/PT - 8-Bit 4MHz 7KB OTP MCU TQFP-44 | Microchip
MPN: PIC16C662T-04I/PT ✗ Tapus ng BuhayPIC16C662T-04I/PT Ulas
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.
Mga alternatibo na pwedeng ilagay na PIC16C662T-04I/PT — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok PIC16C662T-04I/PT (parehas na form factor at footprint) — pagkakaiba sa Timers, Program Memory Size, Core Architecture, Operating Temperature, Package.
PIC16C662T-04E/PT
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC16C662T-20I/PT
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC16C65BT-04I/PT
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC16C65AT-04I/PT
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC16C65A-04I/PT
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
PIC16C64AT-04I/PT
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
PIC16C662T-04I/PT Mga Pinakamataas na Rating at Electrical Characteristics
| 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 |
| Temperature na Operasyon | -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) |
| Packhaging | 44-TQFP (10x10 mm), T/R |
| Uri ng Pagpapasok | Surface Mount |
| Tindminan RoHS | ROHS3 Compliant (per distributor data) |
Pin Configuration ng PIC16C662T-04I/PT
| Pin 1 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| Pin 2 | RA0/AN0 — PORTA bit 0 / analog input channel 0 |
| Pin 3 | RA1/AN1 — PORTA bit 1 / analog input channel 1 |
| Pin 4 | RA2/AN2 — PORTA bit 2 / analog input channel 2 |
| Pin 5 | RA3/AN3/VREF — PORTA bit 3 / analog input 3 / voltage reference |
| Pin 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pin 7 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / SPI slave select |
| Pin 8 | RE0/RD — PORTE bit 0 / read control for parallel slave port |
| Pin 9 | RE1/WR — PORTE bit 1 / write control for parallel slave port |
| Pin 10 | RE2/CS — PORTE bit 2 / chip select for parallel slave port |
| Pin 11 | VDD — Positive supply voltage (5V) |
| Pin 12 | VSS — Ground reference |
| Pin 13 | OSC1/CLKIN — Oscillator input / external clock input |
| Pin 14 | OSC2/CLKOUT — Oscillator output / clock output |
| Pin 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / clock input |
| Pin 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Pin 17 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM 1 |
| Pin 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pin 19 | RD0/PSP0 — PORTD bit 0 / parallel slave port bit 0 |
| Pin 20 | RD1/PSP1 — PORTD bit 1 / parallel slave port bit 1 |
| Pin 21 | RD2/PSP2 — PORTD bit 2 / parallel slave port bit 2 |
| Pin 22 | RD3/PSP3 — PORTD bit 3 / parallel slave port bit 3 |
| Pin 23 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pin 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pin 25 | RC6/TX/CK — PORTC bit 6 / USART transmit / clock |
| Pin 26 | RC7/RX/DT — PORTC bit 7 / USART receive / data |
| Pin 27 | RD4/PSP4 — PORTD bit 4 / parallel slave port bit 4 |
| Pin 28 | RD5/PSP5 — PORTD bit 5 / parallel slave port bit 5 |
| Pin 29 | RD6/PSP6 — PORTD bit 6 / parallel slave port bit 6 |
| Pin 30 | RD7/PSP7 — PORTD bit 7 / parallel slave port bit 7 |
| Pin 31 | VSS — Ground reference |
| Pin 32 | VDD — Positive supply voltage (5V) |
| Pin 33 | RB0/INT — PORTB bit 0 / external interrupt |
| Pin 34 | RB1 — PORTB bit 1 |
| Pin 35 | RB2 — PORTB bit 2 |
| Pin 36 | RB3 — PORTB bit 3 |
| Pin 37 | RB4 — PORTB bit 4 |
| Pin 38 | RB5 — PORTB bit 5 |
| Pin 39 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pin 40 | RB7/PGD — PORTB bit 7 / ICSP data |
| Pin 41 | SEG0 — LCD segment driver 0 |
| Pin 42 | SEG1 — LCD segment driver 1 |
| Pin 43 | COM0 — LCD common driver 0 |
| Pin 44 | COM1 — LCD common driver 1 |
Tipikal na mga Gamit
PIC16C662T-04I/PT ay nararapat para sa 7 aplikasyons: 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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for PIC16C662T-04I/PT — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | 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 |
Pangunahing mga Pagkakaiba
- Industrial temperature grade in standard configuration (kumpara saPIC16C662T-04E/PT)
- Lower unit cost through 4 MHz speed grade (kumpara saPIC16C662T-20I/PT)
- Integrated LCD driver eliminates external controller (kumpara saPIC16C65BT-04I/PT)
Talaan ng Disenyo
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.
Impormasyon ng Pagsunod sa Kautusan
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.
