PIC16C62B-04E/SP - 8-Bit 4MHz 3.5KB OTP MCU | Microchip
MPN: PIC16C62B-04E/SP β End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.95 | $8.95 |
| 10 | $8.05 | $80.50 |
| 100 | $7.15 | $715.00 |
| 500 | $6.4 | $3,200.00 |
| 1,000 | $5.7 | $5,700.00 |
PIC16C62B-04E/SP Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, program memory, timers, and peripherals onto one silicon die. The PIC16C62B belongs to Microchip's mid-range PIC16 family, which sits within the broader taxonomy: microcontroller -> embedded controller -> integrated circuit -> semiconductor. These devices are designed for deterministic, low-power control tasks in cost-sensitive embedded applications where an 8-bit core provides more than sufficient computational headroom.
Key features of the PIC16C62B-04E/SP include its RISC architecture with a small, efficient instruction set, integrated peripherals such as timers, a Capture/Compare/PWM (CCP) module, a USART for serial communication, and an analog comparator. The device supports in-circuit serial programming (ICSP) via Microchip's two-wire programming interface, enabling in-system firmware updates.
The OTP program memory allows the device to be programmed once and retains the code permanently, which is ideal for high-volume production runs where cost-per-unit matters more than re-programmability. The 4MHz maximum operating frequency (denoted by "-04" in the part number) provides adequate throughput for control loops, sensor sampling, and basic serial communication at standard baud rates.
Typical applications include industrial control systems, appliance controllers, automotive body electronics, sensor interface modules, and simple user-interface devices. Designers choose this MCU for its small footprint, low cost, and proven PIC16 toolchain support, including the MPLAB X IDE and MPLAB PM3 programmer ecosystem.
When designing with the PIC16C62B, careful attention must be paid to the OTP nature of program memory: once programmed, the code cannot be erased or rewritten. For prototyping or field-updatable designs, consider the Flash-based PIC16F6xx family as an alternative.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing a consolidated engineering reference for sourcing and design decisions.
Drop-in alternatives for PIC16C62B-04E/SP β 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 PIC16C62B-04E/SP (same form factor and footprint) β differing in Operating Temperature Range, Peripherals, Program Memory Size, Program Memory Type, RoHS Status.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16F628-04/P
β Drop-Inπ Reference alternative (not in catalog)
PIC16C62B-04/SP
β Drop-Inβ In Stock
$4.65 / Unit
View Datasheet βPIC16F627-04/P
β Drop-Inπ Reference alternative (not in catalog)
PIC16C62B-04I/SP
β Drop-Inπ Reference alternative (not in catalog)
PIC16C62A-04E/SP
β Drop-Inβ In Stock
$7.2 / Unit
View Datasheet βPIC16C62B-04E/SP Maximum Ratings & Electrical Characteristics
| Core Processor | PIC |
| Core Size | 8-bit |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 3.5 KB (2K x 14) |
| RAM Size | 128 x 8 bytes |
| EEPROM Size | None |
| Maximum Clock Speed | 4 MHz |
| Number of I/O Pins | 22 |
| Supply Voltage (Vcc) | 4 V to 5.5 V |
| Operating Temperature | -40 C to +125 C (Extended Industrial) |
| Package / Case | 28-DIP (0.300 inch, 7.62 mm) |
| Mounting Type | Through-Hole |
| Oscillator Type | External |
| Connectivity | UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT, CCP |
PIC16C62B-04E/SP Pin Configuration
| Pin 1 | MCLR/VPP β Master Clear (Reset) input / Programming voltage |
| Pin 2 | RA0/AN0 β PORTA bit 0 / Analog input 0 |
| Pin 3 | RA1/AN1 β PORTA bit 1 / Analog input 1 |
| Pin 4 | RA2/AN2/VREF- β PORTA bit 2 / Analog input 2 / Voltage reference negative |
| Pin 5 | RA3/AN3/VREF+ β PORTA bit 3 / Analog input 3 / Voltage reference positive |
| Pin 6 | RA4/T0CKI β PORTA bit 4 / Timer 0 clock input |
| Pin 7 | RA5/SS/AN4 β PORTA bit 5 / Slave Select / Analog input 4 |
| Pin 8 | OSC1/CLKIN β Oscillator crystal input / External clock input |
| Pin 9 | OSC2/CLKOUT β Oscillator crystal output / Clock output |
| Pin 10 | RC0/T1OSO/T1CKI β PORTC bit 0 / Timer 1 oscillator output / Timer 1 clock input |
| Pin 11 | RC1/T1OSI/CCP2 β PORTC bit 1 / Timer 1 oscillator input / CCP2 module |
| Pin 12 | RC2/CCP1 β PORTC bit 2 / Capture/Compare/PWM 1 |
| Pin 13 | RC3/SCK/SCL β PORTC bit 3 / SPI clock / I2C clock |
| Pin 14 | RC4/SDI/SDA β PORTC bit 4 / SPI data in / I2C data |
| Pin 15 | RC5/SDO β PORTC bit 5 / SPI data out |
| Pin 16 | RC6/TX/CK β PORTC bit 6 / USART transmit / USART clock |
| Pin 17 | RC7/RX/DT β PORTC bit 7 / USART receive / USART data |
| Pin 18 | RB0/INT β PORTB bit 0 / External interrupt |
| Pin 19 | RB1 β PORTB bit 1 |
| Pin 20 | RB2 β PORTB bit 2 |
| Pin 21 | RB3/PGM β PORTB bit 3 / Low-voltage programming |
| Pin 22 | RB4 β PORTB bit 4 |
| Pin 23 | RB5 β PORTB bit 5 |
| Pin 24 | RB6/PGC β PORTB bit 6 / ICSP clock |
| Pin 25 | RB7/PGD β PORTB bit 7 / ICSP data |
| Pin 26 | VSS β Ground |
| Pin 27 | VDD β Positive supply voltage |
| Pin 28 | NC β Not connected (per datasheet, reserved) |
Typical Applications
PIC16C62B-04E/SP is suitable for 6 applications: Industrial Control Systems, Appliance Control, Automotive Body Electronics, Sensor Interface Modules, Simple User Interface Devices, Educational and Hobbyist Projects.
Industrial Control Systems
The PIC16C62B-04E/SP fits industrial control applications because its extended temperature range (-40C to +125C), 4MHz RISC core, and integrated peripherals (CCP/PWM, USART, watchdog timer, brown-out reset) provide the deterministic response times and reliability required for factory automation. The 22 digital I/O pins support direct interfacing to sensors, relays, and motor drivers without external glue logic. The 4V-5.5V supply range tolerates industrial 5V rails with significant noise and droop. According to Microchip's PIC16C62B datasheet typical applications section, this MCU is well-suited for PLC I/O modules, sensor multiplexing, and simple closed-loop control loops where 8-bit computational headroom is sufficient.
Recommended
Appliance Control
The PIC16C62B-04E/SP suits consumer and commercial appliance controllers (washing machines, dishwashers, microwave ovens, HVAC controls) where its OTP memory locks in production firmware to prevent field tampering and its 22 I/O pins drive displays, keypads, and power-switching components. The CCP/PWM module generates precise control signals for motor speed or heater regulation, while the integrated USART supports communication with inverters, sensors, or Wi-Fi modules. With 3.5KB of OTP, designers can implement state-machine-based control logic, fault detection, and user-interface handling at minimal BOM cost.
Recommended
Automotive Body Electronics
The PIC16C62B-04E/SP fits automotive body electronics such as seat controllers, mirror adjusters, lighting modules, and dashboard accessory controllers where its extended temperature range (-40C to +125C) survives under-hood and cabin thermal stress. The 4MHz RISC core and deterministic interrupt response handle CAN/LIN communication stacks and switch debouncing at production-grade reliability. The 28-pin SPDIP package is through-hole mountable for service-friendly assembly. While not AEC-Q100 qualified per the obsolete part status, the device has historically been deployed in non-safety automotive subsystems where extended industrial temperature grade is acceptable.
Recommended
Sensor Interface Modules
The PIC16C62B-04E/SP excels as a sensor interface and data acquisition front-end, using its integrated analog comparator, timers, and USART to read multiple sensor inputs and forward processed data over a serial link. The 22 digital I/O pins handle discrete sensor channels, while the CCP module measures pulse widths from ultrasonic, flow, or rotary encoders. Its low power consumption and 4V-5.5V supply range suit battery-monitored sensor nodes and 5V industrial transducer systems. Engineers deploy this MCU in environmental monitoring, building automation sensor hubs, and remote telemetry units.
Recommended
Simple User Interface Devices
The PIC16C62B-04E/SP powers simple user interface devices like remote controls, keypads, LED status panels, and small LCD-display modules where its 22 I/O pins directly drive matrix keypads and indicator LEDs without external driver ICs. The USART supports communication with a host processor or wireless module, while the CCP/PWM output fades LED brightness or drives a piezo buzzer for audible feedback. OTP memory locks the firmware in production, preventing end-user code modification. The 4MHz clock rate provides sufficient throughput for matrix-scanning algorithms and serial protocol handling at standard baud rates up to 38.4 kbps.
Recommended
Educational and Hobbyist Projects
The PIC16C62B-04E/SP is commonly deployed in educational lab kits, university embedded systems courses, and hobbyist projects where students learn 8-bit MCU fundamentals at low cost. Its simple RISC instruction set, 35 single-word instructions, and well-documented PIC16 toolchain (MPLAB X IDE, XC8 compiler, MPLAB PM3 programmer) make it accessible for teaching registers, timers, interrupts, and peripheral interfacing. The 28-pin DIP through-hole package is breadboard-friendly and easy to solder, ideal for lab exercises. While obsolete for new commercial designs, surplus stock remains affordable for educational deployments.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C62B-04E/SP β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F628-04/P | PIC16C62B-04/SP | PIC16F627-04/P |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SPDIP (0.300 inch) | 28-PDIP - same footprint | 28-SPDIP - same footprint | 28-PDIP - same footprint |
| Core Size | 8-bit | 8-bit | 8-bit | 8-bit |
| Program Memory | 3.5 KB OTP | 3.5 KB Flash | 3.5 KB OTP | 1.75 KB Flash |
| RAM Size | 128 bytes | 224 bytes | 128 bytes | 128 bytes |
| Maximum Clock Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Operating Temperature | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) | 0 C to +70 C (Commercial) | -40 C to +85 C (Industrial) |
| Programmability | OTP (one-time) | Flash (reprogrammable) | OTP (one-time) | Flash (reprogrammable) |
| Lifecycle Status | Obsolete | Active | Obsolete | Active |
Key Differentiators
- Extended industrial temperature range (-40C to +125C) (vs PIC16C62B-04/SP)
- Industry-standard PIC16 toolchain and ecosystem (vs PIC16C62A-04E/SP)
- Migration-friendly to Flash-based PIC16F62x family (vs PIC16F628-04/P)
Design Notes
The PIC16C62B-04E/SP operates from a 4V to 5.5V supply. Place a 100nF decoupling capacitor as close as possible to the VDD pin (pin 27) and a bulk capacitor (10uF tantalum or aluminum electrolytic) at the board's power entry point. For battery-powered designs, Microchip's MCP1700 LDO provides a stable 5V output from a higher-voltage source with only 1.6uA quiescent current. Always include a power-on reset delay of at least 72ms by tying MCLR to VDD through a 10k resistor with a 1uF capacitor to ensure stable startup.
The 28-pin SPDIP package has 0.100 inch (2.54 mm) pin pitch, which is breadboard-friendly but consumes significant board area versus SOIC or QFN alternatives. Keep analog and digital traces physically separated to minimize digital switching noise coupling into sensitive analog inputs (RA0-RA5). Route the OSC1/OSC2 traces short and symmetric, with the crystal (or ceramic resonator) placed within 0.5 inch of the MCU to reduce parasitic capacitance. Provide a ground plane under the MCU to improve thermal dissipation and EMI performance.
Estimated: OTP memory cannot be erased or rewritten; once programmed, the firmware is permanent and a programming error wastes the part. Use the PIC16F62x Flash variant for development and prototyping. The CCP/PWM module requires the TRISC bits for the CCP pin (RC2) to be configured as output before use. Brown-out reset (BOR) must be enabled in the configuration word to protect against VDD droop below 4V causing undefined code execution. Always read the configuration word back after programming to verify the fuse settings.
The USART module on the PIC16C62B operates synchronously or asynchronously up to the system clock divided by 16. At 4MHz FOSC, the maximum asynchronous baud rate is 250 kbps. For reliable communication over cables longer than 0.5 meter, use a lower baud rate (38.4 kbps or below) and add a MAX232 or MCP2221 level shifter for RS-232 or USB bridging. The analog comparator input has limited noise rejection; for precision measurements, average multiple samples or use an external ADC such as the MCP3421 18-bit delta-sigma converter.
Compliance Information
Compliance data not present in verified web search results. PIC16C62B-04E/SP is listed as obsolete on distributor pages; AEC-Q100 qualification is not indicated. Refer to Microchip's product compliance declarations for authoritative RoHS/REACH status before sourcing for production.
