PIC16C62B/JW - 8-Bit 20MHz OTP EPROM MCU w/UV Window | Microchip
MPN: PIC16C62B/JW ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.2 | $162.00 |
| 25 | $14.85 | $371.25 |
| 100 | $13.4 | $1,340.00 |
| 500 | $11.95 | $5,975.00 |
PIC16C62B/JW Overview
A PIC microcontroller is a RISC (Reduced Instruction Set Computer) based MCU designed around a Harvard architecture with separate program and data buses, enabling single-cycle instruction execution except for program branches. The PIC16C6x family sits within Microchip's 14-bit instruction word mid-range lineup, balancing code density, peripherals and cost. The OTP/UV-EPROM variants allow in-circuit program memory verification and erasure via ultraviolet light, making the /JW windowed package ideal for firmware iteration during early design and field-programming of small production runs.
Key features of the PIC16C62B include 22 digital I/O pins, an integrated 8-bit timer/counter with 8-bit prescaler, a Watchdog Timer with dedicated on-chip RC oscillator, Power-on Reset, Brown-out Reset, and a 4-channel 8-bit Analog-to-Digital Converter. It executes 35 single-word instructions at up to 5 MIPS, supports an operating voltage range of 4.0 V to 5.5 V, and integrates power-saving Sleep mode with multiple oscillator options including crystal, ceramic resonator and RC. The PIC16C62B/JW's UV window allows repeated erasure, distinguishing it from one-time-programmable (OTP) and Flash-based PIC16F6x variants.
Architecturally, the device uses a 14-bit instruction word with 8-bit data path, a hardware multiplier-free ALU optimized for control loops, and an interrupt controller supporting up to 14 sources. The 28-pin ceramic DIP with quartz window provides the highest endurance for repeated erasing - typically 1000+ erase cycles - making the /JW variant the de-facto choice for engineering development, qualification, and long-life industrial systems where firmware updates are infrequent.
Typical applications include embedded industrial control, sensor interface boards, motor control signal conditioning, prototype designs before migrating to OTP/Flash variants, low-volume medical instrumentation, and aerospace prototype controllers. The /JW package is also used in educational and lab training kits where firmware is repeatedly rewritten.
When designing with the PIC16C62B/JW, ensure that the device is erased under a calibrated UV lamp (e.g., 12,000 uW*sec/cm^2) before reprogramming to avoid pattern retention. The 28-pin CDIP footprint is identical to the PIC16C62B-20/SP (plastic DIP) and PIC16C62B-04/P OTP variants, allowing the PCB socket to be reused across development and production. Select the matching oscillator crystal per the datasheet's frequency-vs-voltage table and decouple VDD with a 0.1 uF ceramic capacitor placed within 5 mm of the pin.
Drop-in alternatives for PIC16C62B/JW — 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/JW (same form factor and footprint) — differing in Instruction Set, Architecture, Operating Voltage, Package, Program Memory Size.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16C62A/JW
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$11.2 / Unit
View Datasheet →PIC16C63A/JW
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$17.95 / Unit
View Datasheet →PIC16C62B-20/SP
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F628A-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16C622A/JW
✅ Drop-In✓ In Stock
$9.25 / Unit
View Datasheet →PIC16C62B/JW Maximum Ratings & Electrical Characteristics
| Architecture | 8-bit RISC Harvard |
| Instruction Set | 35 single-word instructions, 14-bit width |
| Core Frequency (max) | 20 MHz |
| Program Memory | 3.5 KB (2K x 14) UV EPROM |
| RAM | 128 x 8 bytes |
| I/O Pins | 22 |
| ADC | 4 channels, 8-bit |
| Timers | 1 x 8-bit with 8-bit prescaler |
| Watchdog Timer | Yes (with on-chip dedicated RC) |
| Operating Voltage | 4.0 V to 5.5 V |
| Package | 28-pin CDIP (Ceramic DIP) with UV erase window - WDIP, MO-058 |
| Mounting Type | Through-Hole |
| Operating Temperature (commercial /JW) | 0C to +70C |
| Power-on Reset / Brown-out Reset | Yes |
| Interrupts | Up to 14 sources |
| Erase Method | UV light through quartz window |
PIC16C62B/JW Pin Configuration
| Pin 1 | RA2/AN2 — Port A bit 2 / Analog input 2 |
| Pin 2 | RA3/AN3/VREF — Port A bit 3 / Analog input 3 / ADC reference |
| Pin 3 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Pin 4 | RA5/AN4/SS — Port A bit 5 / Analog input 4 / SPI slave select |
| Pin 5 | VSS — Ground reference |
| Pin 6 | OSC1/CLKIN — Crystal oscillator input / external clock in |
| Pin 7 | OSC2/CLKOUT — Crystal oscillator output / clock out (Fosc/4) |
| Pin 8 | RC0 — Port C bit 0 |
| Pin 9 | RC1 — Port C bit 1 |
| Pin 10 | RC2/CCP1 — Port C bit 2 / Capture/Compare/PWM 1 |
| Pin 11 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| Pin 12 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| Pin 13 | RC5/SDO — Port C bit 5 / SPI data out |
| Pin 14 | RC6/TX/CK — Port C bit 6 / USART TX / synchronous clock |
| Pin 15 | RC7/RX/DT — Port C bit 7 / USART RX / synchronous data |
| Pin 16 | VSS — Ground reference |
| Pin 17 | VDD — Positive supply voltage |
| Pin 18 | RB0/INT — Port B bit 0 / External interrupt |
| Pin 19 | RB1 — Port B bit 1 |
| Pin 20 | RB2 — Port B bit 2 |
| Pin 21 | RB3 — Port B bit 3 |
| Pin 22 | RB4 — Port B bit 4 |
| Pin 23 | RB5 — Port B bit 5 |
| Pin 24 | RB6 — Port B bit 6 |
| Pin 25 | RB7 — Port B bit 7 |
| Pin 26 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| Pin 27 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| Pin 28 | MCLR/VPP — Master clear reset / Programming voltage |
Typical Applications
PIC16C62B/JW is suitable for 7 applications: Embedded Industrial Control, Motor Control Signal Conditioning, Sensor Interface and Data Acquisition, Prototype Development before Production Migration, Educational and Training Hardware, Low-Volume Medical Instrumentation, Aerospace Prototype Controllers.
Embedded Industrial Control
The PIC16C62B/JW's 20 MHz core clock, 22 digital I/O pins and integrated 8-bit ADC make it a strong fit for embedded industrial control such as PLC signal-conditioning boards, factory automation I/O expanders and discrete process controllers. The windowed /JW package supports firmware iteration during qualification before migrating to OTP /SP for high-volume production. The 4-channel 8-bit ADC handles thermocouple/4-20 mA inputs after front-end scaling, while the 8-bit timer delivers the deterministic loop period needed for sub-millisecond control updates. The 4.0-5.5 V supply matches standard 5 V industrial backplanes. Brown-out reset and watchdog timer ensure reliable operation in electrically noisy factory floors, and the 35-instruction RISC core keeps firmware deterministic and easy to certify.
Recommended
Motor Control Signal Conditioning
For brushless DC or stepper motor control boards, the PIC16C62B/JW provides a 20 MHz instruction rate that executes 5 MIPS, fast enough for commutation loops at 20 kHz PWM rates. Its 22 I/O pins drive H-bridge enable lines, Hall-effect sensor inputs and encoder feedback, while the 8-bit timer generates the PWM base. The integrated ADC samples motor current via shunt resistor amplifiers for closed-loop torque control. The /JW windowed package allows engineers to iterate commutation tables during prototype development, then migrate code to OTP /SP or PIC16F628A Flash for production. The 5 V supply is compatible with most gate-driver ICs and Hall-sensor interfaces.
Recommended
Sensor Interface and Data Acquisition
The PIC16C62B/JW suits low-channel-count data acquisition front-ends where 22 I/O and a 4-channel 8-bit ADC provide adequate signal handling. The 20 MHz clock supports sampling rates up to ~500 kS/s aggregate across the four ADC channels, suitable for temperature, pressure and flow sensors in process instrumentation. The integrated UART/I2C/SPI peripherals (inherited from PIC16C6x family) simplify interface to digital sensors and host MCUs. The ceramic windowed /JW package supports laboratory prototype firmware updates without removing the device from its test socket. Power-on reset and brown-out reset ensure clean startup after sensor supply disturbances on industrial buses.
Recommended
Prototype Development before Production Migration
The /JW suffix specifically designates the UV-erasable windowed ceramic DIP package, making the PIC16C62B/JW the ideal choice for prototype development cycles where firmware is rewritten many times. Engineers can erase and reflash the EPROM hundreds of times during qualification, then freeze the validated firmware onto PIC16C62B-20/SP (OTP plastic DIP) for production. The same 28-pin DIP footprint means the development board socket is reused across prototype and pilot builds. This dramatically reduces engineering cost vs throwing away plastic-OTP parts during firmware development. The windowed package also suits field-return debug, where the original firmware can be erased and re-flashed to test fault conditions.
Recommended
Educational and Training Hardware
Universities and embedded-systems training programs favor the PIC16C62B/JW for its UV-erasable window, allowing students to erase and re-flash hundreds of times without throwing away devices. The 14-bit instruction word and 35-instruction RISC core cover all fundamental MCU concepts: timers, interrupts, ADC, GPIO, and serial peripherals. The 28-pin DIP footprint drops into standard breadboards and 0.1 inch-pitch development boards. At 20 MHz the device is fast enough to teach real-time control, and the on-chip watchdog timer introduces students to safety and reliability concepts. The windowed package cost premium is acceptable in an educational context where device longevity is paramount.
Recommended
Low-Volume Medical Instrumentation
For low-volume medical device prototypes and qualification units, the PIC16C62B/JW provides deterministic real-time response, integrated ADC for analog biosignal acquisition, and ceramic-package reliability well-suited to long-term thermal cycling. The 5 V supply simplifies analog front-end designs for ECG, pulse oximetry and blood-pressure monitoring prototype boards. The windowed package allows final firmware tuning during FDA submission pre-clinical phases. Brown-out reset and watchdog timer support the patient-safety requirements common in medical electrical equipment. Once design is frozen, code migrates to PIC16F628A-I/P or PIC16C62B-20/SP for pilot production runs.
Recommended
Aerospace Prototype Controllers
Aerospace prototype controllers and lab-grade flight control subsystems benefit from the PIC16C62B/JW's wide operating temperature tolerance, ceramic-package robustness, and the qualification flexibility UV-erase enables. Engineers can iterate firmware across multiple qualification cycles without scrapping flight-prototype hardware. The deterministic 5 MIPS instruction rate provides predictable control-loop latency essential in attitude-control and actuator drive prototypes. Once flight code is finalized, it migrates to radiation-hardened or qualified PIC variants. The 28-pin DIP package also simplifies bench testing and rework on engineering-model hardware that does not yet need the ruggedized package.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C62B/JW — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C62A/JW | PIC16C63A/JW | PIC16C62B-20/SP | PIC16F628A-I/P | PIC16C622A/JW |
|---|---|---|---|---|---|---|
| Package | CDIP-28 (Windowed) - WDIP, MO-058 | CDIP-28 (Windowed) - same | CDIP-28 (Windowed) - same | PDIP-28 - same pinout, plastic OTP | PDIP-28 - same pinout, Flash plastic | CDIP-28 (Windowed) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Frequency (max) | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Program Memory | 3.5 KB EPROM (2K x 14) | 3.5 KB EPROM (2K x 14) | 7.2 KB EPROM (4K x 14) - +106% | 3.5 KB EPROM (2K x 14) - same | 3.5 KB Flash (2K x 14) - same | 3.5 KB EPROM (2K x 14) - same |
| RAM | 128 bytes | 128 bytes | 192 bytes - +50% | 128 bytes - same | 224 bytes - +75% | 128 bytes - same |
| I/O Pins | 22 | 22 - same | 22 - same | 22 - same | 16 - lower | 22 - same |
| ADC | 4-ch 8-bit | 4-ch 8-bit - same | 5-ch 8-bit - +1 ch | 4-ch 8-bit - same | No ADC | No ADC |
| Memory Type | UV EPROM (erasable) | UV EPROM - same | UV EPROM - same | OTP EPROM (non-erasable) | Flash (electrically erasable) | UV EPROM - same |
| Pin-to-Pin Compatible | Reference | Yes | Yes | Yes (package variant only) | Yes (with code recompile) | Yes |
Key Differentiators
- UV-erasable windowed package enables repeated firmware iteration (vs PIC16C62B-20/SP (OTP plastic DIP))
- Higher program memory for expanded firmware (vs PIC16C62A/JW (3.5 KB predecessor))
- Lower cost and wider availability than ceramic windowed variants (vs PIC16C62A/JW (windowed CDIP-28))
Design Notes
The PIC16C62B/JW operates from 4.0 V to 5.5 V. Place a 0.1 uF ceramic decoupling capacitor within 5 mm of the VDD pin (pin 17) and a bulk 10 uF tantalum or electrolytic capacitor near the device. The MCLR/VPP pin (pin 28) requires a 10 kohm pull-up to VDD for normal operation; during EPROM programming, MCLR is pulled to VPP (typically 13-14 V). Ensure the supply rise time at power-on is shorter than the Power-on Reset timeout, otherwise the device may enter undefined state. Estimated: Pdiss at 5 V, 20 MHz, all I/O toggling, is approximately 100 mW.
The 28-pin ceramic DIP (CDIP) package has a thermal resistance of approximately 70 C/W junction-to-ambient. For commercial temperature grade (0C to +70C) operation the junction temperature must remain below 70C. At 5 V supply, 20 MHz clock and full I/O toggle the estimated power dissipation is 100 mW; at room temperature this yields a 7C junction rise above ambient - well within spec. For industrial temperature grades (-40C to +85C) ensure derating remains adequate; the /JW windowed ceramic package has wider operating range than the plastic OTP /SP version.
When laying out a 28-pin DIP socket for the PIC16C62B/JW, keep the crystal or resonator within 5-10 mm of pins 6-7 (OSC1, OSC2) to minimize stray capacitance. Keep the MCLR/VPP trace short and away from high-frequency switching signals. If using a programming header, route the ICSPCLK/ICSPDAT to RB6/RB7 (pins 25-26) without series resistors - in-circuit serial programming (ICSP) requires direct access. Use a low-ESR 0.1 uF cap on VDD placed within 5 mm. Provide a ground plane under the IC to reduce EMI. For UV-erase windowed /JW parts, ensure no opaque component sits above the quartz window.
Do not assume the PIC16F628A can be programmed with PIC16C6x EPROM programming algorithms - they require different programming voltages and protocols. The PIC16C62B/JW is erased by 12,000+ uW*sec/cm^2 of 253.7 nm UV light, typically 15-30 minutes; over-erase can damage the EPROM cell. Brown-out reset is configured via configuration bits - leaving BOR disabled can cause lockup under marginal supply. The watchdog timer uses a dedicated on-chip RC oscillator (~18 ms nominal) independent of the system clock, so WDT continues to run in Sleep mode unless disabled via software. Always read-modify-write PORTB/RA correctly to avoid read-modify-write hazards on I/O pin direction changes.
Compliance Information
PIC16C62B/JW is supplied in a ceramic DIP package that may be exempt under RoHS Annex IV (lead in glass/ceramic). Confirm RoHS/REACH status with Microchip for the specific date code. AEC-Q100 not applicable to general 8-bit MCU lines - this part is not automotive-qualified. Halogen-free status unknown.
