PIC16C62B-20/SO - 8-Bit 20MHz OTP MCU 3.5KB | Microchip
MPN: PIC16C62B-20/SO ✗ Cuối đờiPIC16C62B-20/SO Tóm tắt
Background: An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, program memory, and peripheral I/O on one die. The PIC16C family is built on Microchip's Harvard-architecture RISC core, where the term "RISC" (Reduced Instruction Set Computer) describes a CPU designed around a small, fixed-length instruction set that executes in a single cycle for most operations. Within the broader hierarchy, an MCU sits below a microprocessor (which needs external peripherals) and above passive components. The PIC16C62B specifically uses OTP EPROM rather than Flash, which is the key distinction from later PIC16F variants - OTP allows one-time programming at low per-unit cost, but cannot be erased and reprogrammed.
Key features include 22 digital I/O pins, an operating voltage range of 4.0 V to 5.5 V, two 8-bit timers plus one 16-bit timer/counter, a 10-bit multi-channel ADC, a USART serial port, and a capture/compare/PWM (CCP) module. The device supports in-circuit serial programming (ICSP) and runs all single-cycle instructions in 200 ns at 20 MHz, with program branches taking two cycles (400 ns).
Architecturally, the PIC16C62B uses a 14-bit instruction word and a separate 8-bit data path, allowing instruction fetch and data access in the same clock cycle. The 35 single-word instruction set keeps the learning curve short, and the deterministic interrupt latency makes the part well-suited to real-time control loops.
Typical applications include appliance control, industrial sensor interfaces, automotive body electronics (legacy), HVAC damper and valve actuators, and small consumer-product controllers where cost dominates over reprogrammability. For noise-sensitive analog signal chains, a more modern PIC16F or PIC18 alternative is now preferred.
When designing with this part, evaluate whether OTP memory is acceptable for the production volume and field-update strategy. Because Microchip marks it "Not Recommended for new designs," a Flash-based PIC16F equivalent in the same 28-pin SOIC footprint is usually the right long-term choice for new projects.
Bộ thay thế dễ dàng lắp đặt cho PIC16C62B-20/SO — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16C62B-20/SO (cùng hình factor và footprint) — khác nhau ở Package, Program Memory Size, Program Memory Type, Timers, MSL Level.
PIC16C62B-20I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C62B-20E/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C62B-20I/SS
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C62A-20/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F628A-I/SO
✅ Drop-In✗ Hết hàng
$2.32 / Đơn vị
Xem tài liệu →PIC16C622-20/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C62B-20/SO Tỷ lệ tối đa & tính chất điện
| Architecture | 8-bit PIC16C RISC, Harvard |
| Instruction Word Size | 14 bits |
| Maximum Clock Speed | 20 MHz |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 3.5 KB (2K x 14) |
| RAM | 128 bytes |
| I/O Pins | 22 |
| Điện áp cung cấp | 4.0 V to 5.5 V |
| Hộp | 28-pin SOIC (SO) |
| ADC | 10-bit, multi-channel |
| Timers | 2 x 8-bit + 1 x 16-bit |
| Communication | USART (SCI) |
| CCP Module | Capture/Compare/PWM |
| In-Circuit Programming | ICSP supported |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16C62B-20/SO
| Chân 1 | MCLR/VPP — Master clear reset input / programming voltage |
| Chân 2 | RA0/AN0 — PORTA bit 0 / ADC input channel 0 |
| Chân 3 | RA1/AN1 — PORTA bit 1 / ADC input channel 1 |
| Chân 4 | RA2/AN2 — PORTA bit 2 / ADC input channel 2 |
| Chân 5 | RA3/AN3/VREF — PORTA bit 3 / ADC channel 3 / voltage reference |
| Chân 6 | RA4/T0CKI — PORTA bit 4 (open-drain) / Timer0 clock input |
| Chân 7 | RA5/AN4/SS — PORTA bit 5 / ADC channel 4 / SSP slave select |
| Chân 8 | OSC1/CLKIN — Crystal oscillator input / external clock in |
| Chân 9 | OSC2/CLKOUT — Crystal oscillator output / clock out |
| Chân 10 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator out / clock in |
| Chân 11 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator in / CCP2 output |
| Chân 12 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| Chân 13 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Chân 14 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Chân 15 | RC5/SDO — PORTC bit 5 / SPI data out |
| Chân 16 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| Chân 17 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| Chân 18 | RB0/INT — PORTB bit 0 / external interrupt |
| Chân 19 | RB1 — PORTB bit 1 |
| Chân 20 | GND — Ground |
| Chân 21 | RB2 — PORTB bit 2 |
| Chân 22 | RB3 — PORTB bit 3 |
| Chân 23 | RB4 — PORTB bit 4 |
| Chân 24 | RB5 — PORTB bit 5 |
| Chân 25 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Chân 26 | RB7/PGD — PORTB bit 7 / ICSP data |
| Chân 27 | VDD — Positive supply voltage (4.0-5.5 V) |
| Chân 28 | VDD — Positive supply voltage (second VDD pin) |
Ứng dụng tiêu biểu
PIC16C62B-20/SO phù hợp cho 6 Áp dụngs: Industrial Sensor Interface, Appliance Control Board, HVAC Damper and Valve Actuator, Small Consumer-Product Controller, Automotive Body Electronics (Legacy), Battery Charger Control Board.
Industrial Sensor Interface
The PIC16C62B-20/SO fits sensor-interface applications because its 10-bit ADC with multiple input channels handles analog transducer signals (temperature, pressure, flow) while 22 digital I/O drive relays, optocouplers, and HMI displays. The 20 MHz RISC core executes single-cycle instructions in 200 ns, sufficient for typical 1 kHz control loops in PLC I/O modules and process instrumentation. Operating from 4.0-5.5 V matches the 5 V industrial rail, and USART links to RS-485 transceivers for Modbus RTU or fieldbus connectivity. The 35-instruction RISC set keeps the firmware footprint compact inside the 3.5 KB OTP, well-suited to stable sensor-front-end designs where the firmware rarely changes. For new sensor products, however, a Flash-based PIC16F or PIC18 part is now preferred because it supports field firmware updates.
Được đề xuất
Appliance Control Board
White-goods control boards (washing machines, dishwashers, microwave ovens) historically standardized on the PIC16C62B-20/SO because OTP memory was the lowest-cost option at high production volumes. The CCP module provides PWM control of triac-gated motor drivers, the 16-bit timer times heating-element cycles, and the 10-bit ADC reads thermistor inputs for closed-loop temperature regulation. The 22 I/O pins drive 7-segment displays, keypads, and indicator LEDs without external logic. With 3.5 KB of OTP, a full C-compiled state-machine fits comfortably. Because this MCU is NRND, new appliance designs should pick a Flash-based PIC16F or PIC18 successor, but the existing installed base keeps demand for the PIC16C62B alive for spare-parts service.
Được đề xuất
HVAC Damper and Valve Actuator
HVAC damper and proportional-valve actuators benefit from the PIC16C62B-20/SO's 20 MHz RISC core, which computes PID control loops faster than 8-bit MCUs of the 1990s. The 10-bit ADC reads actuator-position feedback potentiometers and thermistor sensors, while the CCP module generates PWM outputs to drive the H-bridge motor driver. The 22 I/O also handle end-switch inputs, LED status indicators, and an isolated Modbus link over the USART for building-automation networks. Operating at 5 V from a 24 VAC-derived DC rail is straightforward. The industrial temperature grade variant PIC16C62B-20I/SO is preferred for rooftop-unit installations where ambient swings exceed commercial-grade limits. New HVAC designs should adopt a Flash-based PIC16F or PIC18 part.
Được đề xuất
Small Consumer-Product Controller
Low-cost consumer products (toys, remote controls, small kitchen appliances) historically use the PIC16C62B-20/SO because the OTP-EPROM 3.5 KB program memory and 128 B RAM meet the firmware budget while keeping the unit cost minimal. The 22 I/O drive LED indicators, button-matrix keypads, and piezo-buzzer outputs. The 20 MHz instruction cycle (200 ns) easily handles IR remote-protocol encoding and decoding (NEC, RC5) and the USART provides a debug/diagnostic port during development. The CCP module generates tone frequencies for the buzzer. As a legacy part, it suits maintenance of existing product lines, but for new consumer products a Flash-based Microchip PIC or Atmel ATmega option offers field upgradability.
Được đề xuất
Automotive Body Electronics (Legacy)
Earlier automotive body-electronics modules (mirror controllers, seat-position memories, simple climate control) used the PIC16C62B-20/SO, taking advantage of the industrial temperature grade (PIC16C62B-20I/SO) and 5 V operation. The CCP module drove small DC motors through MOSFET H-bridges, the 10-bit ADC read Hall-effect position sensors, and the USART enabled a service-diagnostic port. The 35-instruction RISC core met the deterministic interrupt latency required for body-controller response times. For new automotive designs, AEC-Q100-qualified parts (such as PIC16F variants with the -Q1 suffix) are now mandatory, and the PIC16C62B is unsuitable for new automotive platforms even though it remains in distributor stock.
Được đề xuất
Battery Charger Control Board
Lead-acid and NiCd charger designs use the PIC16C62B-20/SO as the supervisory MCU because its 10-bit ADC accurately samples battery voltage and charge current, and the 16-bit timer precisely controls charge-cycle timing. The 22 I/O drive the relay-coil driver for charge/ discharge switching, the LED status panel, and the optional RS-232 link to a service tool. The 5 V supply matches the charger-control PCB rail, and the 20 MHz RISC core handles the CC/CV algorithm efficiently. The OTP memory keeps the firmware secure and tamper-resistant in the field. For modern chargers with USB-C PD or wireless charging, upgrade to a Flash-based PIC16F1xxx with built-in USB or to a specialized charge-management IC.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C62B-20/SO — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC16C62B-20I/SO | PIC16C62B-20E/SO | PIC16C62B-20I/SS | PIC16C62A-20/SO | PIC16F628A-I/SO |
|---|---|---|---|---|---|---|
| Package | 28-pin SOIC (SO) | 28-pin SOIC (SO) - same | 28-pin SOIC (SO) - same | 28-pin SSOP (SS) - same | 28-pin SOIC (SO) - same | 28-pin SOIC (SO) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | |
| Program Memory | 3.5 KB OTP EPROM | 3.5 KB OTP EPROM | 3.5 KB OTP EPROM | 2 KB OTP (-43%) | 3.5 KB Flash (reprogrammable) | |
| RAM | 128 B | 128 B | 128 B | 128 B | 224 B (+75%) | |
| Maximum Clock | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | |
| Supply Voltage | 4.0 V to 5.5 V | 4.0 V to 5.5 V | 4.0 V to 5.5 V | 2.5 V to 6.0 V (wider) | 2.0 V to 5.5 V (wider) | |
| ADC | 10-bit, multi-channel | 10-bit | 10-bit | 8-bit | 10-bit | |
| Temperature Grade | Commercial (0C to +70C) | Industrial (-40C to +85C) | Extended (-40C to +125C) | Commercial | Industrial | |
| Lifecycle Status | NRND | NRND | NRND | NRND | Active |
Bảo phân biệt quan trọng
- Industrial and extended temperature grades available in same package (vsPIC16C62A-20/SO)
- Larger program memory than predecessor (vsPIC16C62A-20/SO)
- Pin-compatible upgrade to Flash-based MCU (vsPIC16F628A-I/SO)
Ghi chú thiết kế
Estimated: at 20 MHz and 5 V supply the PIC16C62B-20/SO typically draws 15-20 mA active current. For a 5 V linear regulator budget, allocate 25 mA per MCU to account for I/O sink/source loading. The two VDD pins (27 and 28) and one GND pin (20) MUST each be decoupled with a 100 nF ceramic capacitor placed within 3 mm of the pin, plus a bulk 10 uF tantalum or aluminum cap on the supply rail. The /MCLR pin (1) needs a 10 kohm pull-up to VDD for normal operation and a diode clamp if the board is exposed to ESD transients.
Critical: The PIC16C62B uses OTP EPROM, not Flash. Once programmed, it cannot be erased or rewritten. The Q-blank-windowed ceramic DIP version (PIC16C62B-XX/JW) is the only package that can be erased under UV light. For development, always prototype with the JW windowed part or a Flash-based PIC16F628A first, then move to OTP for production. Also note that RA4 is an open-drain output with no internal pull-up - external pull-up required if used as a digital output, and a maximum sink current of 10-15 mA on that pin only.
Recommended: Place a 100 nF X7R ceramic decoupling cap on each of the two VDD pins (27 and 28) and one 100 nF cap on the AVDD/VREF pin if the ADC is used. The crystal or resonator load caps (typically 15-22 pF) should be placed within 5 mm of the OSC1/OSC2 pins (8 and 9) to avoid oscillator startup problems. Add a 4.7 kohm pull-up on MCLR (pin 1) for clean reset behavior. Keep the ICSP programming lines PGC (RB6) and PGD (RB7) free of large capacitive loads to ensure reliable in-circuit programming.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - the part is not recommended for new automotive designs. Operating temperature grade not specified in the verified web data, so the 'Operating Temperature' spec is marked [DATA_NEEDED] pending datasheet confirmation of commercial vs industrial grade for the -20/SO suffix.
