PIC16C662-20/PT - 8-Bit OTP MCU 7KB 20MHz TQFP-44 | Microchip
N.º da peça: PIC16C662-20/PT ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $7.5 | $7,50 |
| 10 | $6.95 | $69,50 |
| 100 | $6.4 | $640,00 |
| 500 | $5.8 | $2.900,00 |
| 1.000 | $5.2 | $5.200,00 |
PIC16C662-20/PT Visão geral
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, ROM/Flash, and peripherals on one die, optimized for embedded control tasks. The PIC16C662 belongs to Microchip's mid-range PIC16 family, which sits between the baseline PIC10/12/16 devices and the high-performance PIC18/dsPIC families. Within the system hierarchy, this device is classified as a microcontroller -> embedded controller -> semiconductor IC. OTP memory means the program can be written once (unlike Flash which is rewritable), which makes the part suitable for low-volume production, prototyping, and legacy systems already in field service.
Key features of the PIC16C662-20/PT include five 8-bit I/O ports, three timer/counters, a Watchdog Timer with its own on-chip RC oscillator, a 5-channel 8-bit Analog-to-Digital Converter (ADC), and two analog comparators. The device operates from 4V to 6V (typical 5V), supports in-circuit serial programming via two pins, and provides power-saving SLEEP mode. The brown-out reset and power-on reset circuits are integrated, eliminating external reset components in many designs.
The PIC16C662 architecture uses a Harvard-style RISC core with a 14-bit instruction word, a single accumulator (W register), and an instruction pipeline that delivers most instructions in one cycle, giving approximately 5 MIPS throughput at 20 MHz. The 35 single-word instructions and 8-level deep hardware stack make the core deterministic and simple to program in assembly or C, which is why PIC16C-series MCUs remain embedded in industrial controllers, appliance controls, and legacy instrumentation.
Typical applications include industrial control panels, HVAC thermostats and fan controllers, security alarm keypads, automotive dashboard sub-modules, vending machine controllers, and legacy LCD/LED display controllers. The 44-pin TQFP footprint provides sufficient I/O for keypad scanning, sensor conditioning through the ADC, and PWM-driven motor or buzzer control.
When designing with this device, ensure the OTP programming window (verified by Microchip programming specifications) is used during code development. Pin 1 orientation on the TQFP must be observed per the package marking, and decoupling capacitors of 0.1 µF plus 10 µF tantalum should be placed close to VDD/VSS pairs to suppress switching noise on the analog ADC channels.
Alternativas drop-in para PIC16C662-20/PT — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC16C662-20/PT (mesmo formato e footprint) — diferindo em Package, Core Architecture, Program Memory Type, Program Memory Size, Watchdog Timer.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16F662-I/PT
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
PIC16C662-20I/PT
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$2.45 / unidade
Ver ficha técnica →PIC16C662-04I/PT
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
PIC16C662-10E/PT
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$5.65 / unidade
Ver ficha técnica →PIC16C662-20/PQ
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$9.75 / unidade
Ver ficha técnica →PIC16C662-20/PT Classificações máximas e características elétricas
| Core Architecture | PIC16C Mid-Range 8-bit RISC |
| Program Memory Size | 7 KB (4K x 14 OTP) |
| RAM Size | 176 bytes |
| Maximum CPU Frequency | 20 MHz |
| Operating Voltage Range | 4 V to 6 V (5 V typical) |
| I/O Pins | 33 |
| ADC | 5 channels x 8-bit |
| Timers | 3 x 8-bit Timer/Counter |
| Analog Comparators | 2 |
| Watchdog Timer | Yes, with dedicated RC oscillator |
| Instruction Set | 35 single-word instructions (14-bit) |
| Hardware Stack | 8 levels deep |
| Encapsulamento | 44-pin TQFP (PT) 10x10 mm |
| ICSP Programming | Yes (In-Circuit Serial Programming) |
| Brown-Out Reset | Yes |
| Power-On Reset | Yes |
Configuração de pinos do PIC16C662-20/PT
| Pino 1 | MCLR/VPP — Master clear reset or programming voltage input |
| Pino 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Pino 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Pino 4 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| Pino 5 | RA3/AN3/VREF — PORTA bit 3 / analog input 3 / ADC reference |
| Pino 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pino 7 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / slave select |
| Pino 8 | VSS — Ground reference |
| Pino 9 | OSC1/CLKIN — Oscillator crystal input or external clock |
| Pino 10 | OSC2/CLKOUT — Oscillator crystal output or clock out |
| Pino 11 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / clock in |
| Pino 12 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Pino 13 | RC2/CCP1 — PORTC bit 2 / Capture Compare PWM1 |
| Pino 14 | RC3 — PORTC bit 3 |
| Pino 15 | RC4 — PORTC bit 4 |
| Pino 16 | RC5 — PORTC bit 5 |
| Pino 17 | RC6 — PORTC bit 6 |
| Pino 18 | RC7 — PORTC bit 7 |
| Pino 19 | VSS — Ground reference |
| Pino 20 | VDD — Positive supply voltage |
| Pino 21 | RB0/INT — PORTB bit 0 / external interrupt |
| Pino 22 | RB1 — PORTB bit 1 |
| Pino 23 | RB2 — PORTB bit 2 |
| Pino 24 | RB3 — PORTB bit 3 |
| Pino 25 | RB4 — PORTB bit 4 |
| Pino 26 | RB5 — PORTB bit 5 |
| Pino 27 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pino 28 | RB7/PGD — PORTB bit 7 / ICSP data |
| Pino 29 | VSS — Ground reference |
| Pino 30 | VDD — Positive supply voltage |
| Pino 31 | RD0 — PORTD bit 0 |
| Pino 32 | RD1 — PORTD bit 1 |
| Pino 33 | RD2 — PORTD bit 2 |
| Pino 34 | RD3 — PORTD bit 3 |
| Pino 35 | RD4 — PORTD bit 4 |
| Pino 36 | RD5 — PORTD bit 5 |
| Pino 37 | RD6 — PORTD bit 6 |
| Pino 38 | RD7 — PORTD bit 7 |
| Pino 39 | VSS — Ground reference |
| Pino 40 | VDD — Positive supply voltage |
| Pino 41 | RE0/RD — PORTE bit 0 / parallel slave port read |
| Pino 42 | RE1/WR — PORTE bit 1 / parallel slave port write |
| Pino 43 | RE2/CS — PORTE bit 2 / parallel slave port chip select |
| Pino 44 | NC — Not connected (per datasheet pinout) |
Aplicações típicas
PIC16C662-20/PT é adequado para 6 aplicaçãos: Industrial Control Panels, HVAC Thermostats and Fan Controllers, Security Alarm Keypads, Vending Machine Controllers, Automotive Dashboard Sub-Modules, Legacy LCD/LED Display Controllers.
Industrial Control Panels
The PIC16C662-20/PT suits industrial control panels because its 33 I/O pins and 5-channel 8-bit ADC support keypad scanning, sensor conditioning, and relay-driving outputs. The 20 MHz CPU delivers approximately 5 MIPS, adequate for real-time PLC-style ladder logic emulation, while the 4-6V supply matches legacy 5V industrial backplanes. Brown-out and power-on reset circuits protect against unreliable startup in factory environments with noisy 24V rails stepped down through DC-DC converters.
Recomendado
HVAC Thermostats and Fan Controllers
The PIC16C662-20/PT fits HVAC thermostat designs because its three timer/counters generate the PWM signals required for triac-fired fan speed control and proportional valve actuation. The two analog comparators enable direct thermistor interface for temperature sensing, while the 8-bit ADC reads setpoint potentiometers and ambient light sensors. Operating from 5V and packaged in compact 44-pin TQFP, the device drops onto wall-mount thermostat PCBs with minimal board real estate.
Recomendado
Security Alarm Keypads
The PIC16C662-20/PT supports security alarm keypads by providing enough I/O to scan 4x4 or 5x5 matrix keypads with debouncing handled in firmware, plus LED indicators driven through PORT C and D. The Watchdog Timer with its own RC oscillator prevents keypad controller lockup, critical for unattended alarm systems. The SLEEP mode reduces quiescent current during armed standby to extend backup battery runtime.
Recomendado
Vending Machine Controllers
The PIC16C662-20/PT powers vending machine controllers because its 33 I/O lines drive multiplexed 7-segment displays, bill validators, coin acceptors, and product dispensing relays. The 5-channel ADC reads coin acceptor pulse trains and currency sensors. OTP memory locks the firmware to prevent tampering, an important security consideration for unattended retail vending equipment. The 5V supply aligns with industrial vending machine power buses.
Recomendado
Automotive Dashboard Sub-Modules
The PIC16C662-20/PT is found in automotive dashboard sub-modules such as climate control heads, trip computers, and instrument cluster backlight drivers. The 8-bit ADC captures analog sensor inputs (potentiometers, temperature sensors, ambient light) while the PWM-capable timers drive LCD backlight brightness via MOSFET gates. Industrial temperature grade variants like PIC16C662-20I/PT handle under-dash thermal conditions from -40C to +85C.
Recomendado
Legacy LCD/LED Display Controllers
The PIC16C662-20/PT drives legacy LCD character displays and multiplexed LED matrix panels in point-of-sale terminals and industrial HMIs. Its PORT B and PORT D drive segment data while PORT C selects rows, enabling software-driven multiplexing at refresh rates above 100 Hz to eliminate flicker. The 20 MHz core computes display updates without visible lag, and the 4-6V supply interfaces directly to standard character LCD modules.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16C662-20/PT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16F662-I/PT | PIC16C662-20I/PT | PIC16C662-04I/PT | PIC16C662-10E/PT | PIC16C662-20/PQ |
|---|---|---|---|---|---|---|
| Package | 44-pin TQFP (PT) | 44-pin TQFP (PT) | 44-pin TQFP (PT) | 44-pin TQFP (PT) | 44-pin TQFP (PT) | 44-pin MQFP (PQ) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Memory Type | OTP EPROM | Flash | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM |
| Program Memory | 7 KB | 7 KB | 7 KB | 7 KB | 7 KB | 7 KB |
| Max CPU Frequency | 20 MHz | 20 MHz | 20 MHz | 4 MHz | 10 MHz | 20 MHz |
| Operating Voltage | 4 V to 6 V | 2 V to 5.5 V | 4 V to 6 V | 4 V to 6 V | 4 V to 6 V | 4 V to 6 V |
| Lifecycle Status | NRND | Active | NRND | NRND | NRND | NRND |
Principais diferenciais
- Wider operating voltage range with Flash memory (vs PIC16F662-I/PT)
- Industrial temperature grade option available (vs PIC16C662-20I/PT)
- Same die available in 4 MHz speed grade (vs PIC16C662-04I/PT)
Notas de projeto
The PIC16C662-20/PT operates from 4 V to 6 V (5 V typical). Place a 0.1 µF ceramic decoupling capacitor within 5 mm of each VDD pin (three VDD pins on this package) and a single 10 µF tantalum or aluminum bulk capacitor on the board supply rail. For analog reference integrity, isolate AVSS/AVDD from noisy digital lines with a ferrite bead if the ADC accuracy is critical.
OTP (One-Time-Programmable) EPROM memory can only be programmed once per address. Verify firmware completely using a Flash-equipped development part (PIC16F662-I/PT) or simulator before committing production units to OTP programming. Once programmed, OTP bits cannot be erased, so any bug becomes a permanent hardware defect on that device.
TQFP packages have perimeter leads on 0.8 mm pitch with a 10x10 mm body. Use solder paste stencil apertures of 0.25 mm width and a reflow profile with peak temperature of 245-250C for lead-free or 220-225C for leaded solder. Pin 1 is identified by a dot marker on the package top surface; orient the silkscreen outline accordingly.
Informações de conformidade
RoHS/REACH/lead-free status not explicitly stated in the Verified Web Data. Microchip PIC16C-series OTP parts were typically offered in both leaded and lead-free variants; consult the device marking or the manufacturer product page for confirmation. AEC-Q100 qualification is not applicable for this general-purpose industrial MCU.