PIC16C62A-04I/SP - 8-Bit 4MHz OTP MCU 28-SPDIP | Microchip
MPN: PIC16C62A-04I/SP ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.2 | $8.20 |
| 10 | $7.35 | $73.50 |
| 100 | $6.4 | $640.00 |
| 500 | $5.75 | $2,875.00 |
| 1,000 | $5.1 | $5,100.00 |
PIC16C62A-04I/SP Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals around an 8-bit data path. PIC microcontrollers follow a RISC (Reduced Instruction Set Computer) architecture, executing one instruction per instruction cycle (four clock cycles). The PIC16C62A belongs to the mid-range PIC16C family - itself a sub-family of Microcontrollers -> Integrated Circuits -> Semiconductors. OTP memory allows a one-time-only field programming, which is well suited to mature, low-cost, high-volume products.
Key features of the PIC16C62A-04I/SP include 35 single-word instructions (only 25 are unique), a 14-bit instruction word, an 8-level deep hardware stack, an integrated Timer0 8-bit counter/timer with 8-bit prescaler, Timer1 16-bit counter/timer, Timer2 8-bit counter/timer, capture/compare/PWM (CCP) module, a 10-bit multi-channel analog-to-digital converter, synchronous serial port (SSP) supporting SPI and I2C, USART, watchdog timer with on-chip RC oscillator, and power-on reset (POR).
The PIC16C62A uses a Harvard architecture with separate program and data buses, allowing instruction fetch and operand access to occur in the same cycle. The industrial-grade (-40C to +85C) operating range, indicated by the "I" suffix, makes it suitable for harsh-environment applications. The "04" speed grade corresponds to a 4 MHz maximum oscillator frequency. The device is well suited for low-to-medium complexity embedded control tasks where simple I/O, timing, and serial communication dominate.
Typical applications include industrial automation control, motor control interfaces, sensor signal conditioning, simple consumer appliance controllers, HVAC control boards, and educational/hobbyist embedded platforms. The USART and SSP modules enable straightforward integration with sensors, displays, and host processors.
When designing with the PIC16C62A, note that OTP memory cannot be erased or rewritten; use a windowed (JW) or Flash-based PIC16F equivalent for development and firmware iteration. Industrial temperature grade (-40C to +85C) is sufficient for most indoor and sheltered outdoor applications but does not cover automotive AEC-Q100 environments.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC16C62A-04I/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-04I/SP (same form factor and footprint) — differing in Program Memory Size, Operating Temperature Range, Peripherals, Program Memory Type, Package / Case.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16C62A-04E/SP
✅ Drop-In✓ In Stock
$7.2 / Unit
View Datasheet →PIC16C62A-04/SP
✅ Drop-In✓ In Stock
$4.45 / Unit
View Datasheet →PIC16C62B-04E/SP
✅ Drop-In✓ In Stock
$5.7 / Unit
View Datasheet →PIC16C622A-04I/SO
✅ Drop-In✓ In Stock
$2.72 / Unit
View Datasheet →PIC16C621A-20I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16C62A-04I/SP Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16C (8-bit RISC, Harvard) |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 3.5 KB (2K x 14 words) |
| Data RAM | 128 bytes |
| Data EEPROM | Not present |
| Maximum Clock Speed | 4 MHz |
| Instruction Word Length | 14 bits |
| I/O Pins | 22 |
| Number of Pins | 28 |
| Package | 28-SPDIP (Skinny Plastic DIP, through-hole) |
| Supply Voltage | 5 V (typical PIC16C family) |
| Operating Temperature Range | -40 C to +85 C (Industrial grade) |
| Mounting Type | Through-Hole |
| Instruction Set | 35 single-word instructions |
| Peripherals | Timer0, Timer1, Timer2, CCP, 10-bit ADC, SSP (SPI/I2C), USART, WDT |
| RoHS Status | Compliant |
PIC16C62A-04I/SP Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, active low |
| Pin 2 | RA0 — PORTA bit 0 (digital I/O or AN0 analog input) |
| Pin 3 | RA1 — PORTA bit 1 (digital I/O or AN1 analog input) |
| Pin 4 | RA2 — PORTA bit 2 (digital I/O or AN2 analog input) |
| Pin 5 | RA3 — PORTA bit 3 (digital I/O or AN3 analog input or VREF+) |
| Pin 6 | RA4 — PORTA bit 4 (digital I/O or AN4 / T0CKI) |
| Pin 7 | RA5 — PORTA bit 5 (digital I/O or AN5 / SS) |
| Pin 8 | OSC1 — Crystal oscillator input |
| Pin 9 | OSC2 — Crystal oscillator output |
| Pin 10 | RC0 — PORTC bit 0 (digital I/O or T1OSO/T1CKI) |
| Pin 11 | RC1 — PORTC bit 1 (digital I/O or T1OSI / CCP2) |
| Pin 12 | RC2 — PORTC bit 2 (digital I/O or CCP1) |
| Pin 13 | RC3 — PORTC bit 3 (digital I/O or SCK/SCL) |
| Pin 14 | RC4 — PORTC bit 4 (digital I/O or SDI/SDA) |
| Pin 15 | RC5 — PORTC bit 5 (digital I/O or SDO) |
| Pin 16 | RC6 — PORTC bit 6 (digital I/O or TX/CK) |
| Pin 17 | RC7 — PORTC bit 7 (digital I/O or RX/DT) |
| Pin 18 | VSS — Ground reference |
| Pin 19 | VDD — Positive supply voltage (+5V) |
| Pin 20 | RB0 — PORTB bit 0 (digital I/O / external interrupt) |
| Pin 21 | RB1 — PORTB bit 1 (digital I/O) |
| Pin 22 | RB2 — PORTB bit 2 (digital I/O) |
| Pin 23 | RB3 — PORTB bit 3 (digital I/O / PGM) |
| Pin 24 | RB4 — PORTB bit 4 (digital I/O) |
| Pin 25 | RB5 — PORTB bit 5 (digital I/O) |
| Pin 26 | RB6 — PORTB bit 6 (digital I/O / PGC) |
| Pin 27 | RB7 — PORTB bit 7 (digital I/O / PGD) |
| Pin 28 | VSS — Ground reference |
Typical Applications
PIC16C62A-04I/SP is suitable for 6 applications: Industrial Automation Control, Motor Control Interface Board, Sensor Signal Conditioning Front-End, HVAC Control Board, Simple Consumer Appliance Controller, Educational and Hobbyist Embedded Platform.
Industrial Automation Control
The PIC16C62A-04I/SP fits industrial automation control because it integrates a 10-bit ADC, USART, and SPI/I2C peripheral set in a single 28-SPDIP device, simplifying PLC I/O expansion boards and sensor interface modules. The 22 I/O pins drive relays, optocouplers, and status LEDs directly, while the SSP peripheral links to digital temperature or pressure sensors over SPI at MHz-class bit rates. Industrial -40C to +85C operation handles factory-floor thermal stress without additional protection. Power-on reset and watchdog timer ensure reliable startup and field-recovery in unattended installations. Compared with discrete logic controllers, the PIC16C62A collapses a multi-chip circuit into one MCU, reducing PCB area and BOM cost while the 5V supply matches legacy 5V industrial backplanes. Firmware fits within the 2K-word OTP, ideal for fixed-function machine controllers.
Recommended
Motor Control Interface Board
The PIC16C62A-04I/SP suits small motor-control interface boards that need PWM generation, fault detection, and serial telemetry in one device. Its Capture/Compare/PWM (CCP) module produces a hardware PWM output to drive a motor-driver FET gate, while the 10-bit ADC samples the back-EMF or current-sense amplifier for closed-loop speed control. The USART transmits telemetry to a host controller at 9600-115200 baud. With 22 I/O pins the MCU manages direction, brake, enable, and limit-switch signals plus status LEDs. The 4 MHz clock gives a 1 microsecond instruction cycle, plenty for an 8 kHz PWM update rate and current-loop sampling. Industrial temperature grade permits cabinet-mounted use near drive electronics. Combined with external H-bridge drivers, the PIC16C62A becomes the control brain of small brushed-DC or stepper motor subsystems.
Recommended
Sensor Signal Conditioning Front-End
For sensor signal-conditioning front-ends the PIC16C62A-04I/SP combines an on-chip 10-bit ADC, programmable prescaler Timer0 for sampling cadence, and a USART for digital output - all in one 28-SPDIP device. The ADC multiplexes across analog channels, allowing simultaneous temperature, humidity, and pressure sensing using external transducers. Linearization and digital filtering run inside the 35-instruction PIC16C instruction set; math is light because sensor compensation is typically a polynomial fit or lookup table. The 128-byte RAM accommodates moving-average buffers. I2C bus via the SSP peripheral connects to EEPROM calibration storage or a companion DAC. Industrial temperature and 5V operation match standard transducer signal levels directly without level shifters. The OTP memory locks the calibration constants for end-of-line programming in volume production.
Recommended
HVAC Control Board
The PIC16C62A-04I/SP fits HVAC control boards where the MCU must read thermistor inputs, drive triac/optocoupler outputs, and offer service-port diagnostics. The 10-bit ADC captures temperature from NTC thermistor divider networks with 0.5C resolution across the 0-100C range. PORTB directly drives optoisolated triac interfaces for fan, compressor, and valve control - 8 outputs handle a typical split-system unit. The USART provides a service-port UART for technician diagnostics at 9600 baud. The 22 I/O pins accommodate the user-interface buttons, LEDs, and the IR receiver for the remote control. The -40C to +85C industrial temperature grade covers equipment-room, attic, and outdoor-unit environments. The PIC16C62A's hardware watchdog and brown-out reset (BOR) prevent firmware lockup during power-line transients common in HVAC installations.
Recommended
Simple Consumer Appliance Controller
The PIC16C62A-04I/SP targets simple consumer appliances like coffee makers, washing-machine sub-controllers, and small kitchen electronics where 5V operation, 22 I/O lines, and the integrated 10-bit ADC suffice. Relay-driver outputs and seven-segment or LED displays connect directly to PORTB. The PWM module controls heating-element power via TRIAC phase-angle firing. Firmware stored in OTP prevents post-shipment tampering and locks the appliance behavior. Internal watchdog and power-on reset protect against brown-outs during heavy load switching. The 4 MHz oscillator delivers deterministic 1 microsecond instruction timing for debouncing and sequencing tasks. Industrial temperature handling covers under-cabinet and laundry-room environments. Because the part is mature and low-cost, legacy designs continue using it where field updates are not required.
Recommended
Educational and Hobbyist Embedded Platform
The PIC16C62A-04I/SP has long been used in educational labs and hobbyist embedded platforms due to its 28-SPDIP through-hole package, which is breadboard-friendly and easy to solder without hot-air rework. Its 35-instruction RISC core is teachable in a single lab session, and the 4 MHz speed gives students visible timing on oscilloscopes and logic analyzers. The integrated peripherals - USART, SSP (SPI/I2C), three timers, 10-bit ADC, CCP - cover most introductory microcontroller curricula without external glue. The OTP memory is a teaching moment about one-time-programmable vs Flash memory trade-offs. Hobbyists use the SPDIP variant for permanent prototypes where firmware is finalized. The industrial temperature grade ensures student-built projects work in any environment. PICkit programmers and MPLAB X IDE support the PIC16C62A for assembly and C development.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C62A-04I/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C62A-04E/SP | PIC16C62A-04/SP | PIC16C62B-04E/SP | PIC16C622A-04I/SO | PIC16C621A-20I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SPDIP (through-hole) | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same | 28-SOIC (surface-mount, different footprint) | 28-PDIP - same family |
| Core | PIC16C 8-bit RISC | PIC16C 8-bit RISC | PIC16C 8-bit RISC | PIC16C 8-bit RISC | PIC16C 8-bit RISC | PIC16C 8-bit RISC |
| Program Memory | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 1.75 KB OTP |
| RAM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 80 bytes |
| Max Clock Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz |
| Temperature Grade | Industrial -40C to +85C | Extended -40C to +125C | Commercial 0C to +70C | Extended -40C to +125C | Industrial -40C to +85C | Industrial -40C to +85C |
| I/O Pins | 22 | 22 | 22 | 22 | 22 | 13 |
Key Differentiators
- Industrial temperature grade with full 3.5KB OTP program memory (vs PIC16C621A-20I/P)
- Pin-compatible migration path to Flash-based PIC16F72-I/SP (vs PIC16C62B-04E/SP)
- Industrial-grade operating range (-40C to +85C) (vs PIC16C62A-04/SP)
Design Notes
The PIC16C62A-04I/SP is a CMOS device operating from a single 5V supply. Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 20) and a bulk capacitor (10 uF or larger) on the supply rail. The MCLR pin (pin 1) should be pulled up through a 10 kohm resistor to VDD. If using an external reset supervisor or RC delay on MCLR, ensure the rise time meets the device's minimum pulse width to avoid spurious resets.
For reliable oscillator operation with the PIC16C62A, keep the crystal or resonator traces between OSC1 (pin 8) and OSC2 (pin 9) short and surrounded by a ground pour. Capacitor selection for crystal mode (HS, XT, LP) follows the datasheet's C1/C2 recommendation table based on the chosen oscillator frequency. For 4 MHz operation, the XT mode with 15-33 pF load capacitors is typical. Avoid routing high-frequency signal traces under the oscillator area to prevent coupling.
The PIC16C62A uses One-Time-Programmable (OTP) memory; once a program is written it cannot be erased or rewritten. Always develop and debug firmware on a Flash-based equivalent (PIC16F72 or PIC16F73) before programming OTP units for production. Additionally, the I prefix denotes industrial temperature grade; do not confuse with PIC16C62A-04/SP (commercial 0C to +70C) or PIC16C62A-04E/SP (extended -40C to +125C). Verify the suffix against your application's thermal envelope before ordering.
Compliance Information
RoHS compliance per Microchip product page. Not AEC-Q100 qualified; for automotive applications use AEC-Q100-qualified parts such as PIC16F72-I/SP or PIC18F family.
