PIC16C62A-20/SP - 8-Bit 20MHz 3.5KB OTP MCU | Microchip
MPN: PIC16C62A-20/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.95 | $7.95 |
| 10 | $7.16 | $71.60 |
| 100 | $6.37 | $637.00 |
| 500 | $5.73 | $2,865.00 |
| 1,000 | $5.1 | $5,100.00 |
PIC16C62A-20/SP Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripheral interfaces onto one die. In the broader taxonomy, the PIC16C62A sits within the PIC16C mid-range family -> 8-bit PIC microcontrollers -> microcontrollers -> microcontrollers and processors -> semiconductor ICs. OTP program memory means each device can be written once after manufacture using a device programmer, making the PIC16C62A cost-optimized for high-volume production runs where firmware is finalized and code updates are not required in the field.
Key features of the PIC16C62A-20/SP include a 14-bit instruction word (a hallmark of Microchip's mid-range architecture), a Harvard bus design separating program and data paths for deterministic single-cycle instruction execution (excluding branches), and ultra-low power consumption of 5 mA typical at 5 V / 4 MHz with standby currents under 1 µA at 32 kHz / 3 V. The brown-out reset block protects against corrupted execution during voltage sags, while the synchronous serial port (SSP) module supports both SPI and I2C communication. The fully static design allows the oscillator to be slowed or stopped without losing register contents.
Typical applications span embedded control tasks where moderate code density and deterministic timing matter, including consumer appliance controllers, industrial sensor interfaces, automotive body electronics (legacy systems), simple motor-control PWM loops, and remote sensor signal conditioning with SPI/I2C sensor front-ends. The 28-pin SPDIP package is also friendly to hand prototyping, hobby projects, and educational platforms where through-hole soldering remains convenient.
When designing with the PIC16C62A-20/SP, note that the OTP memory cannot be re-programmed in-circuit; engineering samples for code iteration require a windowed (JW) package variant. Always include decoupling (100 nF plus 10 µF bulk) close to VDD, reserve the MCLR pin for a proper reset network, and confirm timing-critical isroutines against the 20 MHz / 200 ns instruction-cycle budget.
This page consolidates current distributor pricing, drop-in replacement options within the same 28-SPDIP footprint, and engineering design notes that complement the Microchip datasheet, providing information gain beyond any single distributor listing.
Drop-in alternatives for PIC16C62A-20/SP — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC16C62A-20/SP (same form factor and footprint) — differing in Program Memory Size, Program Memory Type, Operating Temperature Range, Package, Peripherals.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16C62A-20E/SP
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16C62A-10/SP
✅ Drop-In✓ In Stock
$3.65 / Unit
View Datasheet →PIC16C62A-04/SP
✅ Drop-In✓ In Stock
$4.45 / Unit
View Datasheet →PIC16C62A-04I/SP
✅ Drop-In✓ In Stock
$5.1 / Unit
View Datasheet →PIC16C622-20/P
✅ Drop-In✓ In Stock
$2.1 / Unit
View Datasheet →PIC16C621-20/P
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC16C62A-20/SP Maximum Ratings & Electrical Characteristics
| Core Processor | PIC |
| Core Size | 8-Bit |
| Program Memory Type | OTP |
| Program Memory Size | 3.5KB (2K x 14) |
| RAM Size | 128 x 8 (128 bytes) |
| EEPROM Size | None |
| CPU Speed | 20 MHz |
| Number of I/O | 22 |
| Connectivity | I2C, SPI (SSP peripheral) |
| Peripherals | Brown-out Detect/Reset |
| Supply Voltage (Vcc/Vdd) | 4.0 V to 6.0 V |
| Oscillator Type | External |
| Data Converters | None |
| Package / Case | 28-SPDIP (0.300 inch, 7.62 mm) |
| Operating Temperature | 0C to +70C (commercial) |
| Instruction Set Architecture | PIC16C mid-range, 14-bit instructions, Harvard |
| Mounting Type | Through-Hole |
PIC16C62A-20/SP Pin Configuration
| Pin 1 | MCLR/VPP — Master Clear reset input / programming voltage |
| Pin 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Pin 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Pin 4 | RA2/AN2 — PORTA bit 2 / analog input 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/SS/AN4 — PORTA bit 5 / SPI slave select / analog input 4 |
| Pin 8 | OSC1/CLKIN — External oscillator input |
| Pin 9 | OSC2/CLKOUT — External oscillator output |
| Pin 10 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Pin 11 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Pin 12 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| Pin 13 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pin 14 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pin 15 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pin 16 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| Pin 17 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| Pin 18 | RC8/INT — PORTC bit 8 (not bonded on 28-pin) — NC |
| Pin 19 | VSS — Ground |
| Pin 20 | VDD — Positive supply voltage |
| Pin 21 | RB0/INT — PORTB bit 0 / external interrupt |
| Pin 22 | RB1 — PORTB bit 1 |
| Pin 23 | RB2 — PORTB bit 2 |
| Pin 24 | RB3/PGM — PORTB bit 3 / low-voltage programming |
| Pin 25 | RB4 — PORTB bit 4 |
| Pin 26 | RB5 — PORTB bit 5 |
| Pin 27 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pin 28 | RB7/PGD — PORTB bit 7 / ICSP data |
Typical Applications
PIC16C62A-20/SP is suitable for 6 applications: Consumer Appliance Control Boards, Industrial Sensor Interface Modules, Automotive Body Electronics (Legacy), Simple PWM Motor Control Loops, Remote Sensor Signal Conditioning, Educational / Hobby Embedded Platforms.
Consumer Appliance Control Boards
The PIC16C62A-20/SP's 3.5 KB OTP program memory, 22 digital I/O, and integrated I2C/SPI peripherals make it a strong fit for consumer appliance controllers such as washing machines, microwave ovens, and dishwashers where finalized firmware drives relays, sensors, and LED indicators. The 20 MHz CPU clock supports real-time debounce, keypad scanning, and triac-fired heater control loops without timing slacks. At 5 V / 4 MHz the device draws only ~5 mA typical, helping appliances meet standby power budgets under 1 W. The 28-SPDIP through-hole package simplifies manual rework on assembly lines where automation is uneconomical for low-volume SKUs. Recommended companion parts include the PIC16F88x for RoHS variants and the ULN2003A Darlington array for relay driving.
Recommended
Industrial Sensor Interface Modules
For industrial sensor aggregators that read 4-20 mA loops, thermocouples, or strain gauges over SPI, the PIC16C62A-20/SP delivers the deterministic single-cycle instruction execution needed for tight sampling windows. The brown-out reset block protects against corrupted ADC reads during supply sags common on long cable runs, and the SSP peripheral reads multiple SPI sensors in sequence without CPU-intensive bit-banging. 22 I/O pins are sufficient to drive a 4-digit multiplexed display plus four sensor select lines and a UART debug port. Industrial designers should consider the PIC16C62A-20E/SP variant for -40C to +125C extended temperature deployments. The 128 bytes of RAM constrains data buffering, so applications streaming high-rate data should pair with an external SRAM.
Recommended
Automotive Body Electronics (Legacy)
The PIC16C62A-20/SP has a long installed base in automotive body controllers, door modules, and seat controllers where its deterministic mid-range PIC16C architecture and 5 V tolerance are well understood by legacy Tier-1 suppliers. The 20 MHz clock allows CAN bit-banging or LIN protocol stacks on UART timers for older vehicle platforms predating widespread CAN-bus integration. OTP memory secures finalized calibration data and prevents field tampering. Note that new automotive designs should migrate to AEC-Q100-qualified PIC16F or dsPIC33 variants; the PIC16C62A-20/SP is not AEC-Q100 qualified per the verified data and is intended for service replacement rather than new automotive designs. Source: Microchip PIC16C62A product family documentation.
Recommended
Simple PWM Motor Control Loops
Hobby and educational motor-control projects benefit from the PIC16C62A-20/SP's CCP module generating PWM at 20 MHz with sufficient resolution for low-cost DC and stepper motor speed control. The 22 I/O can drive an H-bridge direction logic plus enable lines, with remaining pins reserved for limit switches and quadrature encoder feedback. Fully static design lets the oscillator be gated to reduce energy waste when the motor is idle, drawing under 1 µA standby current at 32 kHz / 3 V per the datasheet. The 28-SPDIP through-hole package suits hand-built prototypes and breadboard-friendly educational kits where surface-mount parts are inconvenient. Recommended companion parts include the L298N dual H-bridge driver and 24LC256 EEPROM for parameter storage.
Recommended
Remote Sensor Signal Conditioning
Battery-powered remote sensor nodes using the PIC16C62A-20/SP benefit from the device's low-power modes (under 1 µA standby at 32 kHz) and integrated I2C/SPI for direct sensor front-end interfacing with no external glue logic. The brown-out detector prevents corrupted data writes during solar-panel voltage dips common in outdoor installations. 128 bytes of RAM supports modest buffering for averaged sensor readings before transmission. The 28-SPDIP package allows conformal-coated boards for outdoor use with through-hole part reliability. Recommended companion parts include the BME280 humidity/temperature/pressure sensor and the RN2483 LoRa transceiver for long-range uplink.
Recommended
Educational / Hobby Embedded Platforms
Universities, maker communities, and self-learners favor the PIC16C62A-20/SP for teaching 8-bit embedded fundamentals because the 28-SPDIP package fits any breadboard, the PIC16C mid-range instruction set is well documented in textbooks, and the 20 MHz speed grade supports live demos of timer interrupts, UART, and I2C without timing concerns. The 3.5 KB OTP memory imposes realistic code-size discipline on students, encouraging modular C coding practices. Hobbyists benefit from the enormous installed base of PIC tutorials, MPLAB X IDE support, and PICkit programmers that target this device family. Recommended companion parts include the PICkit 3 programmer and a 20 MHz crystal plus 22 pF load capacitors for the external oscillator.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C62A-20/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C62A-20E/SP | PIC16C62A-10/SP | PIC16C62A-04/SP | PIC16C622-20/P | PIC16C621-20/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SPDIP (0.300 in, 7.62 mm) | 28-SPDIP (same) | 28-SPDIP (same) | 28-SPDIP (same) | 28-PDIP (same) | 28-PDIP (same) |
| CPU Speed | 20 MHz | 20 MHz | 10 MHz (-50%) | 4 MHz (-80%) | 20 MHz | 20 MHz |
| Program Memory | 3.5 KB OTP (2K x 14) | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP (PIC16C622 variant) | 1.75 KB OTP (smaller) |
| RAM Size | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 80 bytes (smaller) |
| Number of I/O | 22 | 22 | 22 | 22 | 22 | 13 (smaller) |
| Supply Voltage | 4.0 V to 6.0 V | 4.0 V to 6.0 V | 4.0 V to 6.0 V | 4.0 V to 6.0 V | 3.0 V to 6.0 V (wider) | 3.0 V to 6.0 V (wider) |
| Operating Temperature | 0C to +70C (commercial) | -40C to +125C (extended) | 0C to +70C (commercial) | 0C to +70C (commercial) | 0C to +70C (commercial) | 0C to +70C (commercial) |
| Connectivity | I2C, SPI (SSP) | I2C, SPI (SSP) | I2C, SPI (SSP) | I2C, SPI (SSP) | I2C, SPI (SSP) | I2C, SPI (SSP) |
| Brown-out Reset | Yes | Yes | Yes | Yes | Yes | No |
Key Differentiators
- 20 MHz speed grade with full 3.5 KB OTP and 22 I/O at commercial temp (vs PIC16C62A-04/SP)
- Industrial extended temperature range option for harsh environments (vs PIC16C62A-20E/SP)
- Brown-out detect/reset peripheral built in (vs PIC16C621-20/P)
Design Notes
Place a 100 nF ceramic decoupling capacitor directly across VDD (pin 20) and VSS (pin 19), as close to the device as the PCB layout allows, with trace lengths under 3 mm. Add a 10 uF bulk tantalum or electrolytic capacitor at the board's power entry to handle inrush during MCLR-driven resets. The PIC16C62A-20/SP draws approximately 5 mA typical at 5 V / 4 MHz active and under 1 uA standby at 32 kHz / 3 V; budget power supply headroom accordingly for relay-coil transients in the same board. Always include a reverse-biased diode from VDD to VSS for transient suppression on automotive and industrial boards.
OTP program memory cannot be erased or rewritten once programmed - commit code to production OTP only after full validation on a windowed (JW) ceramic package variant or flash-based PIC16F equivalent. A common mistake is leaving the MCLR pin floating; tie it through a 10 kohm pull-up to VDD with a 100 nF cap to ground for clean power-on-reset. Do not exceed the 6.0 V absolute maximum on VDD or the brown-out reset will not protect against the resulting corruption. The PORTA pins default to analog inputs on reset; configure them as digital I/O via the ADCON1 register before reading PORTA digital state.
Route the 20 MHz external oscillator traces between OSC1 (pin 8) and OSC2 (pin 9) as short, matched-length tracks with a ground guard ring to minimize EMI radiation - long traces act as 20 MHz antennas and can fail EMC tests. Place the 22 pF crystal load capacitors within 3 mm of the OSC pins. Route the MCLR trace away from switching power sections and relay coils to prevent false resets. Use a star-ground topology with the PIC16C62A-20/SP ground pin as the central reference to avoid ground-loop noise coupling into the analog PORTA inputs.
Compliance Information
RoHS and REACH compliance status not stated in verified distributor listings; PIC16C62A family predates widespread RoHS adoption. AEC-Q100 not qualified - new automotive designs should migrate to PIC16F or dsPIC33 AEC-Q100 variants. Source: verified web data, 2026-09-17.