PIC16C62A/JW - 8-Bit 20MHz CMOS MCU w/ UV Window | Microchip
MPN: PIC16C62A/JW β Last Time Buy| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.95 | $18.95 |
| 10 | $16.42 | $164.20 |
| 100 | $14.1 | $1,410.00 |
| 500 | $12.5 | $6,250.00 |
| 1,000 | $11.2 | $11,200.00 |
PIC16C62A/JW Overview
What is an 8-bit microcontroller? An 8-bit microcontroller is a small computer-on-a-chip that processes data 8 bits at a time, integrates CPU, memory, and peripherals on a single die, and is designed for embedded control tasks. Within the broader taxonomy, the PIC16C62A belongs to: microcontroller -> 8-bit MCU -> CMOS RISC MCU -> EPROM-based MCU -> power management IC hierarchy. Microchip's PIC16C6X family pioneered the Harvard RISC architecture with only 35 single-word instructions, single-cycle execution for most opcodes (200 ns instruction cycle at 20 MHz), and a fully static design that allows clock frequencies down to DC.
Key features of the PIC16C62A/JW include: 14-bit instruction word, 8-bit data path, hardware multiply option (selected parts), wide operating voltage from 2.5 V to 6.0 V, low-power consumption (15 uA typical at 5 V / 4 MHz; 1 uA typical at 3 V / 32 kHz), and a commercial/industrial/extended temperature range option. The JW ceramic-windowed package enables up to thousands of erase/program cycles for iterative firmware development - the standard OTP PIC16C62A is one-time programmable, whereas the /JW suffix is the development-friendly variant.
Architecturally, the PIC16C62A uses a 2-stage pipeline with separate program and data buses (Harvard architecture). Its 14-bit-wide instruction word carries both opcode and immediate operand, which is more compact than competing 8-bit CISC architectures. The 22 I/O pins are multiplexed with the on-chip peripherals (ADC inputs, timer clock inputs, serial port signals), and the device supports both internal and external oscillator modes including RC, LP, XT, and HS configurations for the -04 and -20 speed grades.
Typical applications include industrial control prototyping, automotive subsystem development, sensor interface firmware validation, low-power battery-powered instrument development, and educational labs where the windowed package permits multiple erase/program cycles during code iteration. The 28-CDIP through-hole footprint also makes the part well-suited to breadboard and socket-based evaluation.
Design consideration: when migrating from /JW prototype to OTP or flash production variants (e.g., PIC16F62X or PIC16C62A-20/P), verify oscillator configuration bits, watchdog timer enable, and code-protect fuse settings, as the PIC16F variants require different configuration word programming. The /JW package should be stored in opaque tape when not being erased - UV exposure from fluorescent lighting can degrade EPROM cells over time.
This page synthesizes distributor pricing, parametric drop-in alternatives, and practical design notes not consolidated on a single distributor product page. Pricing reflects open-market distributor rates as of 2026-09-17 and may vary by reel, lead finish, and quantity break.
Drop-in alternatives for PIC16C62A/JW 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 PIC16C62A/JW (same form factor and footprint) β differing in Instruction Cycle Time, Number of I/O Pins, Program Memory Type, RAM Size, Timers.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16C62A-20/P
β Drop-Inπ Reference alternative (not in catalog)
PIC16C62A-04/P
β Drop-Inπ Reference alternative (not in catalog)
PIC16C62A-I/P
β Drop-Inπ Reference alternative (not in catalog)
PIC16F628A-I/P
β Drop-Inπ Reference alternative (not in catalog)
PIC16F627A-I/P
β Drop-Inπ Reference alternative (not in catalog)
PIC16C622A/JW
β Drop-Inβ In Stock
$9.25 / Unit
View Datasheet βPIC16C62A/JW Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Instruction Word Width | 14 bits |
| Program Memory Type | UV-Erasable EPROM (windowed JW package) |
| Program Memory Size | 3.5 KB (2K x 14) |
| RAM Size | 128 x 8 bytes |
| Data EEPROM | Not present (EPROM-only MCU) |
| Maximum CPU Clock | 20 MHz |
| Instruction Cycle Time | 200 ns at 20 MHz (4 clock / instruction cycle) |
| Operating Voltage Range | 2.5 V to 6.0 V |
| Number of I/O Pins | 22 |
| Package / Case | 28-CDIP (0.300 inch, 7.62 mm) Window (CERDIP JW) |
| Mounting Type | Through-Hole |
| Oscillator Type | External (RC, LP, XT, HS modes) |
| A/D Converter | 8-bit, multi-channel (integrated) |
| Timers | Timer0, Timer1, Timer2 with PWM |
| Communication Peripherals | SSP (I2C/SPI), USART/SCI |
| Operating Temperature Range | 0C to +70C (commercial; industrial /E and /I grades available) |
| Instruction Set Size | 35 single-word instructions |
| MSL (Moisture Sensitivity) | Not applicable (through-hole CERDIP) |
PIC16C62A/JW Pin Configuration
| Pin 1 | /MCLR/VPP β Master Clear (reset) input / programming voltage input |
| Pin 2 | RA0/AN0 β PORTA bit 0 / Analog input channel 0 |
| Pin 3 | RA1/AN1 β PORTA bit 1 / Analog input channel 1 |
| Pin 4 | RA2/AN2 β PORTA bit 2 / Analog input channel 2 |
| Pin 5 | RA3/AN3/VREF β PORTA bit 3 / Analog input channel 3 / ADC voltage reference |
| Pin 6 | RA4/T0CKI β PORTA bit 4 / Timer0 clock input (open-drain) |
| Pin 7 | RA5/AN4/SS β PORTA bit 5 / Analog input channel 4 / SPI slave select |
| Pin 8 | VSS β Ground reference |
| Pin 9 | OSC1/CLKIN β Oscillator input / external clock input |
| Pin 10 | OSC2/CLKOUT β Oscillator output / clock output (Fosc/4) |
| Pin 11 | RC0/T1OSO/T1CKI β PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Pin 12 | RC1/T1OSI/CCP2 β PORTC bit 1 / Timer1 oscillator input / Capture-Compare-PWM 2 |
| Pin 13 | RC2/CCP1 β PORTC bit 2 / Capture-Compare-PWM 1 |
| Pin 14 | RC3/SCK/SCL β PORTC bit 3 / SPI clock / I2C clock |
| Pin 15 | RC4/SDI/SDA β PORTC bit 4 / SPI data in / I2C data |
| Pin 16 | RC5/SDO β PORTC bit 5 / SPI data out |
| Pin 17 | RC6/TX/CK β PORTC bit 6 / USART transmit / USART clock |
| Pin 18 | RC7/RX/DT β PORTC bit 7 / USART receive / USART data |
| Pin 19 | VSS β Ground reference (secondary) |
| Pin 20 | VDD β Positive supply voltage (+2.5 V to +6.0 V) |
| Pin 21 | RB0/INT β PORTB bit 0 / External interrupt input |
| Pin 22 | RB1 β PORTB bit 1 |
| Pin 23 | RB2 β PORTB bit 2 |
| Pin 24 | RB3 β PORTB bit 3 |
| Pin 25 | RB4 β PORTB bit 4 (interrupt-on-change) |
| Pin 26 | RB5 β PORTB bit 5 (interrupt-on-change) |
| Pin 27 | RB6/PGC β PORTB bit 6 / In-circuit debugger clock (ICSP) |
| Pin 28 | RB7/PGD β PORTB bit 7 / In-circuit debugger data (ICSP) |
Typical Applications
PIC16C62A/JW is suitable for 6 applications: Embedded Firmware Prototyping, Industrial Control Prototyping, Educational Microcontroller Labs, Low-Power Battery Instrument Development, Legacy Hardware Maintenance, Sensor Interface and Data Acquisition.
Embedded Firmware Prototyping
The PIC16C62A/JW is purpose-built for firmware development and iterative code debugging. Its 3.5 KB UV-erasable EPROM tolerates thousands of erase/program cycles - a hard requirement when iterating on firmware builds that cannot be supported by one-time-programmable (OTP) parts. The 200 ns instruction cycle at 20 MHz supports real-time control loops, and the 22 I/O lines plus 128-byte RAM accommodate moderate sensor-fusion or peripheral-driver code. Engineers port validated firmware to PIC16C62A-20/P or PIC16F628A-I/P for production; the JW variant typically never ships in volume.
Recommended
Industrial Control Prototyping
Industrial control systems often require prototype validation before committing to higher-volume OTP or flash production. The PIC16C62A/JW's wide 2.5 V to 6.0 V operating range tolerates industrial 24 V-derived rails after regulation, and its commercial/industrial/extended temperature grades match factory-floor environments. The on-chip 8-bit ADC and PWM-capable Timer2 support motor-speed-control and sensor-feedback prototyping; the SSP peripheral handles I2C sensor buses and SPI ADC interfaces common in industrial instrumentation.
Recommended
Educational Microcontroller Labs
University and vocational embedded-systems courses use the PIC16C62A/JW because the UV-erasable window permits multiple lab cycles per student - one part can serve dozens of erase/program iterations across a semester. The 28-pin PDIP through-hole footprint is breadboard-compatible without surface-mount adapters, simplifying lab wiring. The PIC16C6X 35-instruction RISC core is well-documented and approachable for first-time embedded programmers, with a complete instruction set covered in a single datasheet chapter.
Recommended
Low-Power Battery Instrument Development
The PIC16C62A/JW draws only 15 uA typical at 5 V / 4 MHz and 1 uA typical at 3 V / 32 kHz, making it suitable for low-power battery instrument prototypes. The /JW package lets designers iterate on sleep-mode and clock-gating firmware without burning through OTP parts. Engineers designing battery-powered sensor nodes can validate average current consumption with the JW variant, then migrate the final firmware to PIC16F628A-I/P for production with comparable low-power modes (Sleep < 1 uA typical).
Recommended
Legacy Hardware Maintenance
Many installed industrial and medical systems from the late 1990s through 2000s were designed around PIC16C62A-series MCUs in production equipment that remains in service today. The /JW windowed variant supports field repair of these legacy systems by allowing engineers to reprogram EPROM-based units when firmware patches are needed. For modern replacements, the pin-compatible PIC16F628A-I/P maintains the same 28-pin PDIP footprint and PIC16C6X peripheral set, enabling drop-in field upgrades where flash reprogrammability adds value.
Recommended
Sensor Interface and Data Acquisition
The PIC16C62A/JW's integrated 8-bit ADC and SSP peripheral (I2C/SPI) make it suitable for sensor interface and data acquisition prototype boards, where multiple analog and digital sensors must be sampled and preprocessed before forwarding to a host. The 22 I/O lines can drive chip-select signals for SPI sensor stacks or address lines for I2C multiplexers, while the PWM-capable Timer2 controls actuator drive signals. Migrating to PIC16F628A-I/P for production preserves the same peripheral layout and adds data EEPROM for calibration storage.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C62A/JW β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C62A-20/P | PIC16C62A-04/P | PIC16C62A-I/P | PIC16F628A-I/P | PIC16F627A-I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-CERDIP Window (JW) | 28-PDIP (no window) | 28-PDIP (no window) | 28-PDIP (no window) | 28-PDIP (no window) | 28-PDIP (no window) |
| Program Memory Type | UV-EPROM (windowed) | OTP EPROM | OTP EPROM | OTP EPROM | Flash | Flash |
| Program Memory Size | 3.5 KB (2K x 14) | 3.5 KB (2K x 14) | 3.5 KB (2K x 14) | 3.5 KB (2K x 14) | 3.5 KB flash | 1.75 KB flash |
| Maximum Clock | 20 MHz | 20 MHz | 4 MHz | 20 MHz | 20 MHz | 20 MHz |
| RAM Size | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 224 bytes | 224 bytes |
| Data EEPROM | None | None | None | None | 128 bytes | 128 bytes |
| Temperature Grade | Commercial (0C to +70C) | Commercial | Commercial | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) |
| Programming Method | UV erase + parallel program | Parallel OTP (one-time) | Parallel OTP (one-time) | Parallel OTP (one-time) | ICSP (in-circuit serial) | ICSP (in-circuit serial) |
Key Differentiators
- UV-erasable windowed package enables iterative firmware development (vs PIC16C62A-20/P (OTP PDIP))
- Pin-compatible upgrade path to flash-based PIC16F628A-I/P (vs PIC16C62A-04/P (slower speed grade))
- Full PIC16C6X peripheral set retained (ADC + SSP + USART) (vs PIC16C622A/JW (reduced peripherals))
Design Notes
UV erasure of the PIC16C62A/JW windowed package requires a calibrated UV lamp emitting 253.7 nm wavelength at approximately 12,000 uW/cm^2 for 20-30 minutes. Ambient fluorescent lighting can slowly erase EPROM cells over weeks - store the windowed part in opaque conductive foam between erase cycles. After UV erase, all configuration bits (oscillator mode, watchdog, code protect, brown-out) must be reprogrammed, as they reset to default state. Per Microchip datasheet 30211D, the /MCLR/VPP pin requires 12-14 V for high-voltage programming, which standard ICSP programmers do not provide - use a parallel programmer such as MPLAB PM3.
The PIC16C62A/JW draws 15 uA typical at 5 V / 4 MHz and 1 uA typical at 3 V / 32 kHz LP oscillator mode. For battery-powered designs, configure the LF oscillator mode (32.768 kHz crystal on OSC1/OSC2) and use Sleep mode aggressively - typical Sleep current is < 1 uA with watchdog disabled. Decoupling: place a 100 nF ceramic capacitor within 5 mm of the VDD pin (pin 20) and a 10 uF bulk capacitor on the supply rail. The /MCLR pin should be tied to VDD through a 10 kohm resistor with a 100 nF cap to VSS for noise immunity - an unclamped /MCLR can cause spurious resets.
When designing a PCB footprint that must accept both PIC16C62A/JW (28-CERDIP windowed) and PIC16F628A-I/P (28-PDIP), use a standard 28-pin PDIP socket pattern (0.100 inch pin pitch, 0.300 inch row spacing). The CERDIP and PDIP packages share identical pin 1 location and pin numbering convention, so a single PCB land pattern accepts both. However, the CERDIP body is 0.005 inch taller than PDIP - ensure enclosure clearance accounts for the taller JW package. Decoupling capacitors should be placed on the component side of the PCB directly under the IC socket.
The PIC16C62A in CERDIP windowed package has a thermal resistance (theta_JA) of approximately 60-70 C/W in still air, lower than plastic PDIP variants. Maximum junction temperature is +150C and maximum power dissipation at 25C ambient is approximately 1 W in CERDIP. In typical 5 V / 20 MHz operation with all I/O toggling, power consumption is below 50 mW - well within thermal limits. In production, migrate to the plastic PDIP PIC16C62A-20/P for higher-volume, lower-cost assemblies where UV erase is not required.
Compliance Information
RoHS compliance status not specified in the verified web data; CERDIP windowed package was originally lead-bearing with later lead-free finishes. AEC-Q100 not applicable - this is a general-purpose MCU not automotive-qualified. Microchip Technology publishes a Conflict Minerals Declaration compliant with the Dodd-Frank Act.
