PIC12CE519/JW - 8-Bit 4MHz 1.5KB EPROM MCU, 8-CDIP Windowed | Microchip
MPN: PIC12CE519/JW ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.1575 | $12.16 |
| 10 | $11.6 | $116.00 |
| 100 | $10.45 | $1,045.00 |
| 500 | $9.3 | $4,650.00 |
| 1,000 | $8.4 | $8,400.00 |
PIC12CE519/JW Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, RAM, non-volatile program memory, and peripherals on a single die. MCUs sit beneath microprocessors in the computing hierarchy, prioritizing low power, deterministic real-time I/O, and small footprint over raw throughput. The PIC 12C family targets cost-sensitive 6- and 8-pin applications where a tiny RISC core, a minimal instruction set (33 single-word instructions for the PIC12CE519), and very low standby current are more important than memory depth or compute performance.
Key features of the PIC12CE519/JW include 4MHz maximum operating frequency, 2.0V-5.5V (or 3.0V-5.5V per the verified data) supply range, six general-purpose I/O pins multiplexed with peripherals, an 8-bit timer/counter, a watchdog timer, an analog comparator, and a programmable weak pull-up on GP0/GP1/GP3. The device also provides an on-chip 4MHz RC oscillator and supports external clock, RC, and XT oscillator modes for application flexibility. Power-managed Sleep mode with multiple wake-up sources reduces quiescent current to microampere levels.
The PIC12CE519/JW uses Microchip's Enhanced PIC16C5X core architecture with a 12-bit instruction word, 2-level hardware stack, and direct/indirect addressing modes. The ceramic windowed CDIP package exposes the silicon die for UV erasure, allowing the same physical device to be reprogrammed many times - a feature reserved for development, prototyping, and low-volume engineering builds. Production deployments typically use the one-time-programmable JW or the OTP plastic DIP/SOIC variants for cost reasons.
Typical applications include low-cost consumer appliances, sensor interface front-ends, battery-powered remote controls, toys, simple timers, and educational development kits. The integrated EEPROM data memory is useful for storing calibration constants, configuration values, or serial numbers without external non-volatile chips. The 6 GPIO pins are sufficient for driving relays (via transistors), reading switches, or talking to a single UART-style bit-banged peripheral.
When designing with this part, note that the JW windowed CDIP variant is functionally identical to the OTP/EPROM PIC12CE519 die - the difference is only the package and erase mechanism. Plan your BOM by reserving JW units for engineering builds and switching to the plastic-DIP PIC12CE519-04/P or SOIC PIC12CE519-04/SM for production to reduce cost. Also confirm the supply voltage range carefully; some PIC12CE519 speed grades (e.g., -04 and -10) differ in minimum Vdd and maximum oscillator frequency.
This page synthesizes distributor pricing, drop-in alternatives within the PIC12C/PIC12CE/PIC12F families, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC12CE519/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 PIC12CE519/JW (same form factor and footprint) — differing in Timers, I/O Pins, RoHS Status, Core Architecture, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC12CE518/JW
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$5.55 / Unit
View Datasheet →PIC12C509A/JW
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$9.4 / Unit
View Datasheet →PIC12C508A/JW
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$7.95 / Unit
View Datasheet →PIC12F629-I/P
✅ Drop-In✓ In Stock
$1.04 / Unit
View Datasheet →PIC12F683-I/P
✅ Drop-In✓ In Stock
$1.22 / Unit
View Datasheet →PIC12CE519/JW Maximum Ratings & Electrical Characteristics
| Family | PIC 12C |
| Core | Enhanced PIC16C5X, 8-bit RISC |
| Program Memory Type | EPROM (UV-erasable in JW package) |
| Program Memory Size | 1.5 KB (1K x 12 words) |
| Data EEPROM | 16 bytes |
| RAM | 41 bytes |
| Maximum CPU Frequency | 4 MHz |
| Supply Voltage Range | 3.0 V to 5.5 V |
| I/O Pins | 6 |
| Timers | 1 x 8-bit (TMR0) |
| Watchdog Timer | Yes |
| Analog Comparator | Yes |
| Internal RC Oscillator | Yes (4 MHz) |
| Instruction Set | 33 single-word instructions |
| Operating Temperature | 0 C to +70 C (commercial) |
| Package | 8-CDIP (0.300", 7.62mm) Windowed |
| Mounting Type | Through-Hole |
| Programming Method | UV-erase + EPROM programming |
PIC12CE519/JW Pin Configuration
| Pin 1 | GP5/OSC1/CLKIN — General-purpose I/O / oscillator input / external clock input |
| Pin 2 | GP4/OSC2/CLKOUT — General-purpose I/O / oscillator output / clock output |
| Pin 3 | GP3/MCLR/Vpp — General-purpose I/O (open-drain) / Master Clear reset / programming voltage |
| Pin 4 | GP2/T0CKI/INT — General-purpose I/O / TMR0 clock input / external interrupt |
| Pin 5 | GP1/COS — General-purpose I/O / comparator output |
| Pin 6 | GP0/CIN — General-purpose I/O / comparator input |
| Pin 7 | Vss — Ground reference |
| Pin 8 | Vdd — Positive supply (3.0V to 5.5V) |
Typical Applications
PIC12CE519/JW is suitable for 6 applications: UV-Reerasable Development Platform, Battery-Powered Remote Control, Toy and Educational Microcontroller Kit, Low-Cost Sensor Interface Front-End, Automotive Aftermarket Accessory Controller, Simple Timer and Appliance Sub-Assembly.
UV-Reerasable Development Platform
The PIC12CE519/JW is purpose-built for iterative firmware development thanks to its ceramic windowed 8-CDIP package, which exposes the silicon die for UV erasure. The 1.5 KB EPROM (1K x 12) supports thousands of erase/program cycles during bring-up, while the Enhanced PIC16C5X core (33 single-word instructions) keeps assembly code compact and easy to debug. Engineers prefer the /JW variant over OTP versions because a single windowed part can host dozens of code revisions; the BOM cost is justified by the saved programming-tool cycle time during prototype validation phases.
Recommended
Battery-Powered Remote Control
The PIC12CE519/JW fits handheld remote controls because of its 6 GPIO pins, 41-byte RAM, 4 MHz internal RC oscillator (no external crystal), and Sleep current in the microampere range. Its 3.0V-5.5V supply range is compatible with two AA cells (3V) or a single CR2032 with boost converter, while the 16-byte EEPROM can store pairing codes or user settings without external non-volatile memory. The PIC12CE519's 4 MHz clock ceiling is more than enough for bit-banged IR transmitter protocols such as NEC, RC5, or Sony format.
Recommended
Toy and Educational Microcontroller Kit
The PIC12CE519/JW's 8-pin form factor, 33-instruction RISC core, and forgiving 3.0V-5.5V supply range make it a popular MCU in entry-level toys and university microcontroller courses. With 1.5 KB EPROM, students can fit basic PWM motor control, button input debouncing, and simple sensor readout routines without external memory. The windowed package also lets instructors erase and re-program the same hardware unit for each lab session, dramatically reducing kit cost compared with disposable OTP parts in classroom settings.
Recommended
Low-Cost Sensor Interface Front-End
The PIC12CE519/JW can serve as a tiny analog-to-digital preprocessor for industrial sensors using its on-chip analog comparator and 8-bit TMR0. The 6 GPIO pins are sufficient to drive a 4-channel digital sensor via bit-banged SPI or I2C, then output results over a single UART-style bit-bang line. With 41 bytes of RAM and 16 bytes of EEPROM for calibration constants, the part can autonomously filter, threshold, and retransmit sensor data - useful as a smart front-end in legacy 4-20 mA loops or simple Modbus RTU slave nodes.
Recommended
Automotive Aftermarket Accessory Controller
Although the commercial-grade PIC12CE519/JW is rated 0C to +70C, the part is widely seen in non-safety automotive aftermarket accessories such as lighting controllers, alarm beepers, and relay drivers. Its 5V-tolerant inputs integrate with most 12V automotive rails via simple resistor dividers, and the watchdog timer plus Sleep mode support reliable always-on operation. Production designs usually graduate to the PIC12F629-I/SN or PIC12F683 for flash reprogramming and wider temperature range, but the /JW remains a development favorite.
Recommended
Simple Timer and Appliance Sub-Assembly
The PIC12CE519/JW excels in standalone timer modules such as washing-machine sub-assemblies, irrigation valves, and HVAC actuator controllers where the program logic is fixed and the I/O count is small. With TMR0 as an 8-bit counter plus the on-chip analog comparator, the part can implement countdown, delay-on-make, and proportional control algorithms using less than 800 instructions. The 16-byte EEPROM stores last-state or fault-log information across power cycles, while Sleep mode keeps standby current negligible when the appliance is idle.
Recommended
Recommended Products Summary
Engineering reference data for PIC12CE519/JW — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12CE518/JW | PIC12C509A/JW | PIC12C508A/JW | PIC12F629-I/P | PIC12F683-I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 8-CDIP Windowed (0.300") | 8-CDIP Windowed (same) | 8-CDIP Windowed (same) | 8-CDIP Windowed (same) | PDIP-8 (same footprint, plastic) | PDIP-8 (same footprint, plastic) |
| Program Memory | 1.5 KB EPROM | 0.75 KB EPROM (-50%) | 1.5 KB EPROM (same) | 0.75 KB EPROM (-50%) | 1 KB Flash (-33%) | 2 KB Flash (+33%) |
| Data EEPROM | 16 bytes | 16 bytes (same) | 0 bytes (no EEPROM) | 0 bytes (no EEPROM) | 128 bytes (+700%) | 256 bytes (+1500%) |
| RAM | 41 bytes | 25 bytes (-39%) | 41 bytes (same) | 25 bytes (-39%) | 64 bytes (+56%) | 128 bytes (+212%) |
| Max CPU Frequency | 4 MHz | 4 MHz (same) | 4 MHz (same) | 4 MHz (same) | 20 MHz (+400%) | 20 MHz (+400%) |
| Supply Voltage | 3.0V to 5.5V | 3.0V to 5.5V (same) | 3.0V to 5.5V (same) | 3.0V to 5.5V (same) | 2.0V to 5.5V (wider) | 2.0V to 5.5V (wider) |
| Memory Type | UV-EPROM | UV-EPROM (same) | UV-EPROM (same) | UV-EPROM (same) | Flash (in-circuit programmable) | Flash (in-circuit programmable) |
| AEC-Q100 Qualified | No | No | No | No | No (industrial grade) | No (industrial grade) |
Key Differentiators
- Windowed UV-erasable package for development (vs PIC12CE518/JW (same die, 0.75 KB EPROM))
- On-chip EEPROM data memory (vs PIC12C509A/JW (1.5 KB EPROM, no EEPROM))
- Single-family pinout compatibility with flash-based production targets (vs PIC12F629-I/P (flash-based))
Design Notes
Estimated: do not treat GP3 as a normal CMOS I/O pin. GP3 is shared with MCLR (Master Clear reset) on PIC12CE519 and is open-drain only - it cannot actively drive a high logic level. To use GP3 as a digital input, either disable the MCLR function via the CONFIG register (MCLRE = 0) or wire a pull-up to it. Mis-wiring GP3 as a push-pull output is the most common PIC12CE519 design error. When MCLR is required, size the MCLR pull-up to at least 10 kohm to ensure proper reset behaviour during power-up ramp.
The PIC12CE519 draws less than 2 mA active at 4 MHz and 5V, but its peak current spikes during internal flash-like operations can briefly exceed this figure. Decouple Vdd (pin 8) with a 100 nF ceramic capacitor placed within 5 mm of the IC pin, plus a bulk 1-10 uF electrolytic on the same rail. For Sleep-mode designs, add a 100 kohm pull-up on MCLR (pin 3) to prevent spurious wake-ups from leakage current; the part's Sleep current is otherwise below 1 uA typical.
The 8-CDIP windowed package is a through-hole device with 2.54 mm (0.100") pin pitch. Reserve the PCB footprint for socketed designs (e.g., 8-pin DIP socket) so the JW part can be removed for UV erasure without desoldering. The quartz window on the package top must remain unobstructed - do not place heatsinks or shields over the IC. Provide at least 10 mm clearance above the package to allow the UV lamp to illuminate the die during erasure, and clearly mark the orientation (pin 1 dot or notch) on the silkscreen to avoid reversed insertion.
Estimated: when migrating from PIC12CE519/JW to PIC12F629 or PIC12F683, do not assume CONFIG register bit positions are identical. The PIC12F family uses different CONFIG addresses for watchdog enable, oscillator mode, code protection, and MCLR selection. A bit-for-bit copy of the PIC12CE519 CONFIG word into a PIC12F629 will yield an unconfigured or locked part. Always re-derive the CONFIG word using the target PIC12F datasheet and confirm oscillator mode and code-protect settings in MPLAB X before programming the production target.
Compliance Information
Ceramic windowed CDIP package contains lead in the ceramic-glass seal, which is the most likely reason the /JW windowed CDIP variant is RoHS non-compliant even if the silicon die is lead-free. The PIC12CE519 die is RoHS-compliant in plastic OTP packages (PIC12CE519-04/P, -04/SM); windowed JW is a development-only package form factor. REACH compliance assumed based on Microchip's standard REACH statement. AEC-Q100 not qualified; for automotive designs use PIC12F629T-I/SN or PIC12F683T-I/SN industrial-grade variants.
