PIC16C662-20/PT - 8-Bit OTP MCU 7KB 20MHz TQFP-44 | Microchip
Артикул: PIC16C662-20/PT ✗ Снят с производства| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 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 Обзор
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.
Аналоги без доработки для PIC16C662-20/PT — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с PIC16C662-20/PT (тот же форм-фактор и посадочное место) — отличается по Package, Core Architecture, Program Memory Type, Program Memory Size, Watchdog Timer.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
PIC16F662-I/PT
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
PIC16C662-20I/PT
✅ Прямая замена ⚠️ Характеристики не проверены✓ В наличии
$2.45 / шт.
Открыть даташит →PIC16C662-04I/PT
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
PIC16C662-10E/PT
✅ Прямая замена ⚠️ Характеристики не проверены✓ В наличии
$5.65 / шт.
Открыть даташит →PIC16C662-20/PQ
✅ Прямая замена ⚠️ Характеристики не проверены✓ В наличии
$9.75 / шт.
Открыть даташит →PIC16C662-20/PT Максимальные параметры и электрические характеристики
| 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 |
| Корпус | 44-pin TQFP (PT) 10x10 mm |
| ICSP Programming | Yes (In-Circuit Serial Programming) |
| Brown-Out Reset | Yes |
| Power-On Reset | Yes |
Конфигурация выводов PIC16C662-20/PT
| Контакт 1 | MCLR/VPP — Master clear reset or programming voltage input |
| Контакт 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Контакт 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Контакт 4 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| Контакт 5 | RA3/AN3/VREF — PORTA bit 3 / analog input 3 / ADC reference |
| Контакт 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Контакт 7 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / slave select |
| Контакт 8 | VSS — Ground reference |
| Контакт 9 | OSC1/CLKIN — Oscillator crystal input or external clock |
| Контакт 10 | OSC2/CLKOUT — Oscillator crystal output or clock out |
| Контакт 11 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / clock in |
| Контакт 12 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Контакт 13 | RC2/CCP1 — PORTC bit 2 / Capture Compare PWM1 |
| Контакт 14 | RC3 — PORTC bit 3 |
| Контакт 15 | RC4 — PORTC bit 4 |
| Контакт 16 | RC5 — PORTC bit 5 |
| Контакт 17 | RC6 — PORTC bit 6 |
| Контакт 18 | RC7 — PORTC bit 7 |
| Контакт 19 | VSS — Ground reference |
| Контакт 20 | VDD — Positive supply voltage |
| Контакт 21 | RB0/INT — PORTB bit 0 / external interrupt |
| Контакт 22 | RB1 — PORTB bit 1 |
| Контакт 23 | RB2 — PORTB bit 2 |
| Контакт 24 | RB3 — PORTB bit 3 |
| Контакт 25 | RB4 — PORTB bit 4 |
| Контакт 26 | RB5 — PORTB bit 5 |
| Контакт 27 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Контакт 28 | RB7/PGD — PORTB bit 7 / ICSP data |
| Контакт 29 | VSS — Ground reference |
| Контакт 30 | VDD — Positive supply voltage |
| Контакт 31 | RD0 — PORTD bit 0 |
| Контакт 32 | RD1 — PORTD bit 1 |
| Контакт 33 | RD2 — PORTD bit 2 |
| Контакт 34 | RD3 — PORTD bit 3 |
| Контакт 35 | RD4 — PORTD bit 4 |
| Контакт 36 | RD5 — PORTD bit 5 |
| Контакт 37 | RD6 — PORTD bit 6 |
| Контакт 38 | RD7 — PORTD bit 7 |
| Контакт 39 | VSS — Ground reference |
| Контакт 40 | VDD — Positive supply voltage |
| Контакт 41 | RE0/RD — PORTE bit 0 / parallel slave port read |
| Контакт 42 | RE1/WR — PORTE bit 1 / parallel slave port write |
| Контакт 43 | RE2/CS — PORTE bit 2 / parallel slave port chip select |
| Контакт 44 | NC — Not connected (per datasheet pinout) |
Типичное применение
PIC16C662-20/PT подходит для 6 применениеs: 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.
Рекомендуется
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.
Рекомендуется
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.
Рекомендуется
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.
Рекомендуется
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.
Рекомендуется
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.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для PIC16C662-20/PT — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | 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 |
Ключевые отличия
- Wider operating voltage range with Flash memory (против PIC16F662-I/PT)
- Industrial temperature grade option available (против PIC16C662-20I/PT)
- Same die available in 4 MHz speed grade (против PIC16C662-04I/PT)
Заметки по проектированию
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.
Информация о соответствии
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.