PIC12CE519-04/SN - 4MHz 8-Bit OTP MCU w/ EEPROM | Microchip
MPN: PIC12CE519-04/SN ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.61 | $1.61 |
| 10 | $1.46 | $14.60 |
| 100 | $1.3 | $130.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $1.05 | $1,050.00 |
PIC12CE519-04/SN Overview
What is an 8-bit OTP microcontroller? An 8-bit microcontroller (MCU) is a small computer-on-a-chip with an 8-bit data path, used in embedded applications requiring low cost, low power, and deterministic real-time behavior. OTP (One-Time-Programmable) memory allows the program to be written once and retained indefinitely, which is ideal for high-volume, cost-sensitive end products that do not need firmware updates. Within the broader hierarchy, the PIC12CE519 sits at: 8-bit MCU -> PIC12 baseline -> PIC12C5xx/CE5xx sub-family, used where EEPROM-backed user data storage is required in a tiny SOIC-8 form factor.
Key features include 25 mA source/sink per I/O pin (allowing direct LED or small-transistor drive), selectable oscillator modes (internal 4 MHz RC, external RC, external crystal, and low-frequency crystal), an 8-bit timer/counter (TMR0) with an 8-bit prescaler, and a watchdog timer (WDT) with its own on-chip RC oscillator for reliable operation. The integrated 16-byte EEPROM supports up to 1M erase/write cycles, and the device operates from 2.5V to 5.5V across the commercial temperature window.
Typical applications include low-cost consumer electronics, simple sensor conditioning, household appliances (toaster/coffee timers), LED lighting controllers, remote control transmitters, IR learning devices, and any low-I/O-count embedded design needing non-volatile user parameters. When replacing legacy 8-bit designs, the 4 MHz instruction rate provides ~1 MIPS, enough to handle keypad scanning, basic PWM, and UART-style bit-banged communication.
Drop-in alternatives for PIC12CE519-04/SN — 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 PIC12CE519-04/SN (same form factor and footprint) — differing in Package, Core Architecture, Instruction Cycle Time, Operating Temperature, Program Memory Size.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC12F519-I/SN
✅ Drop-In📋 Reference alternative (not in catalog)
PIC12F519T-I/SN
✅ Drop-In📋 Reference alternative (not in catalog)
PIC12CE518-04E/SN
✅ Drop-In✓ In Stock
$1.38 / Unit
View Datasheet →PIC12CE518T-04E/SN
✅ Drop-In✓ In Stock
$1.4 / Unit
View Datasheet →PIC12CE519-04E/SN
✅ Drop-In✓ In Stock
$1.67 / Unit
View Datasheet →PIC12F629-I/SN
✅ Drop-In📋 Reference alternative (not in catalog)
PIC12CE519-04/SN Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC |
| Core Sub-Family | PIC12C5xx / PIC12CE5xx |
| CPU Frequency (Max) | 4 MHz |
| Program Memory Type | OTP (One-Time-Programmable) |
| Program Memory Size | 1.5 KB (1K x 12 words) |
| RAM Size | 41 bytes |
| Data EEPROM | 16 bytes |
| I/O Pins | 6 |
| I/O Source/Sink | 25 mA per pin |
| Timers | TMR0 (8-bit) with 8-bit prescaler |
| Watchdog Timer | Yes (independent on-chip RC) |
| Oscillator Options | Internal 4 MHz RC, External RC, External Crystal, LF Crystal |
| Operating Voltage | 2.5 V to 5.5 V |
| Operating Temperature | 0 C to +70 C (Commercial) |
| Package | SOIC-8 (SN, 150 mil) |
| Instruction Set Width | 12-bit |
| Power-on Reset | Yes |
| RoHS Status | Compliant |
PIC12CE519-04/SN Pin Configuration
| Pin 1 | GP5/OSC1/CLKIN — Bidirectional I/O; oscillator input or external clock input |
| Pin 2 | GP4/OSC2/CLKOUT — Bidirectional I/O; oscillator output or clock output |
| Pin 3 | GP3/MCLR/VPP — Input-only I/O; Master Clear reset (active low) or programming voltage input |
| Pin 4 | GP2/T0CKI/INT — Bidirectional I/O; Timer0 clock input or external interrupt |
| Pin 5 | GP1/CIN-/ICSPCLK — Bidirectional I/O; comparator inverting input or ICSP clock |
| Pin 6 | GP0/CIN+/ICSPDAT — Bidirectional I/O; comparator non-inverting input or ICSP data |
| Pin 7 | VSS — Ground reference |
| Pin 8 | VDD — Positive supply voltage (2.5 V to 5.5 V) |
Typical Applications
PIC12CE519-04/SN is suitable for 6 applications: Consumer Appliance Timers, IR Remote Control Transmitters, LED Lighting Controllers, Low-Cost Sensor Signal Conditioning, Security and Accessory Controllers, Automotive Accessory Modules (Non-Safety).
Consumer Appliance Timers
The PIC12CE519-04/SN suits low-cost household appliances like toaster and coffee-maker timers where 1.5 KB of OTP code is sufficient for state-machine control and where the on-chip 16-byte EEPROM stores user-set toast darkness or brew strength. At 4 MHz the part delivers ~1 MIPS, enough to debounce a keypad, drive a 7-segment display, and emit relay-control pulses within tight timing budgets. The integrated POR and WDT eliminate external reset supervisors, reducing BOM cost on a sub-$1 controller slot.
Recommended
IR Remote Control Transmitters
The PIC12CE519-04/SN is a strong fit for handheld IR remote controls: 6 I/O pins support a 3x4 or 4x4 matrix keypad plus a single IR-LED driver, and the 25 mA source/sink per pin can drive a TSAL6200-style IR LED directly without a buffer transistor. Internal 4 MHz RC oscillator avoids an external resonator, saving board area and cost. The 16-byte EEPROM retains last-channel preferences across battery changes, while OTP program memory secures the protocol firmware against unauthorized clones.
Recommended
LED Lighting Controllers
For low-channel-count decorative or accent LED drivers, the PIC12CE519-04/SN's 6 high-drive I/O pins (25 mA each) can sink RGB channels directly with no external transistors, and the 4 MHz core supports bit-banged WS2812-style or simple PWM dimming at modest update rates. OTP memory is acceptable because the color sequences are fixed at production; the on-chip EEPROM stores user brightness/scene presets. A 2.5V to 5.5V operating range supports both 3.3V and 5V LED strings from a small linear regulator.
Recommended
Low-Cost Sensor Signal Conditioning
The PIC12CE519-04/SN can replace simple analog signal-conditioning circuits by digitizing sensor outputs through a comparator (CIN+/CIN- on GP0/GP1) and applying threshold logic in firmware. Operating at 4 MHz, the part executes threshold comparisons in under a microsecond, well below the response time of most slow-changing sensors (temperature, humidity, soil moisture). The integrated 16-byte EEPROM records calibration offsets per unit at factory trim, while the small SOIC-8 footprint fits inside probe housings.
Recommended
Security and Accessory Controllers
Door-bell chimes, simple alarm keypads, and garage-door accessory controllers benefit from the PIC12CE519-04/SN's 6 I/O pins, internal watchdog timer, and Power-on Reset. The watchdog catches firmware lockups in unattended installations, and the 16-byte EEPROM stores installer codes or zone configurations. The SOIC-8 footprint plus 2.5V to 5.5V supply range fit easily on a small accessory PCB powered from a battery or wall adapter, and the low OTP cost enables sub-$2 bill-of-materials.
Recommended
Automotive Accessory Modules (Non-Safety)
For non-safety automotive accessories (interior LED modules, vanity mirror controllers, simple switch panels), the extended-temperature PIC12CE519-04E/SN variant offers -40C to +125C operation in the same SOIC-8 footprint. The 4 MHz internal oscillator and on-chip EEPROM keep the BOM to a minimum, while the 25 mA I/O drives small relays and indicator LEDs directly. Designers should still verify AEC-Q100 qualification requirements for the specific subsystem - this part family is not broadly AEC-Q100 listed.
Recommended
Recommended Products Summary
Engineering reference data for PIC12CE519-04/SN — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12F519-I/SN | PIC12F519T-I/SN | PIC12CE518-04E/SN | PIC12CE518T-04E/SN | PIC12CE519-04E/SN | PIC12F629-I/SN |
|---|---|---|---|---|---|---|---|
| Package | SOIC-8 (SN, 150 mil) | SOIC-8 (SN, 150 mil) - same | SOIC-8 (SN, 150 mil) - same | SOIC-8 (SN, 150 mil) - same | SOIC-8 (SN, 150 mil) - same | SOIC-8 (SN, 150 mil) - same | SOIC-8 (SN, 150 mil) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Program Memory | 1.5 KB OTP | 1.5 KB Flash | 1.5 KB Flash | 0.75 KB OTP | 0.75 KB OTP | 1.5 KB OTP | 1.75 KB Flash |
| Data EEPROM | 16 bytes | 16 bytes | 16 bytes | None | None | 16 bytes | 128 bytes |
| CPU Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz |
| Operating Temperature | 0 C to +70 C | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +85 C |
| I/O Pins | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Memory Type | OTP (one-time) | Flash (reprogrammable) | Flash (reprogrammable) | OTP | OTP | OTP | Flash (reprogrammable) |
Key Differentiators
- On-chip 16-byte EEPROM with 1M erase/write endurance (vs PIC12CE518-04E/SN)
- Flash memory reprogrammability (vs PIC12F519-I/SN)
- 25 mA I/O drive without external buffers (vs PIC12F629-I/SN)
Design Notes
The PIC12CE519-04/SN operates from 2.5 V to 5.5 V. Decouple VDD (pin 8) with a 100 nF X7R ceramic capacitor placed within 5 mm of the pin, and add a bulk 10 uF aluminum-polymer capacitor on the same rail if the supply comes from a switching regulator. Internal POR holds the part in reset until VDD reaches the safe threshold (~1.5 V), but a slow-rising supply can cause incomplete initialization - add a diode-clamped RC on MCLR if the supply rise time exceeds 100 ms.
Keep the oscillator traces short and surround the XTAL or resonator with a ground guard ring to reduce EMI pickup. When using the internal 4 MHz RC oscillator, no external components are needed but verify the calibrated frequency across voltage and temperature - Microchip's datasheet specifies calibration to within +/- 1 percent at 5 V and +25 C. For ICSP programming, route ICSPCLK (GP1) and ICSPDAT (GP0) to a 2-pin header without series resistors so the programmer can drive them directly.
GP3 is input-only; attempting to configure it as an output will read back 0 and may cause unexpected behavior in firmware relying on TRISIO reads. The MCLR pin (GP3/VPP) must NOT be left floating - either tie it to VDD through a 10 kohm resistor for normal operation, or connect it directly to the ICSP header for in-circuit programming. Writing to on-chip EEPROM without checking the WR bit can corrupt data; always poll WR or use the recommended EEIF interrupt sequence from the datasheet.
Compliance Information
RoHS compliance per Microchip product declaration and distributor listings. Not AEC-Q100 qualified; the PIC12CE519-04E/SN extended-temperature variant is not AEC-Q100 either. Halogen-free status not explicitly stated in the datasheet; confirm with Microchip before shipping into regions requiring halogen-free evidence.
