PIC12LCE519-04/SN - 8-Bit OTP MCU 1.5KB | Microchip
MPN: PIC12LCE519-04/SN ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.1 | $2.10 |
| 10 | $1.85 | $18.50 |
| 100 | $1.62 | $162.00 |
| 500 | $1.41 | $705.00 |
| 1,000 | $1.22 | $1,220.00 |
PIC12LCE519-04/SN Overview
A microcontroller (MCU) is a single-chip computer containing a CPU, program memory, data memory, and I/O peripherals on one integrated circuit. PIC microcontrollers use a RISC-based Harvard architecture and are programmed using Microchip's MPLAB X IDE and the MPLAB PM3 programmer. Within the semiconductor hierarchy, an MCU is a sub-category of digital IC, and the PIC12C family occupies the low-pin-count, ultra-small-footprint tier alongside the PIC10F, PIC12F, and PIC16C families.
Key features of the PIC12LCE519 include four oscillator selections (including the internal 4 MHz RC oscillator with programmable calibration), a 25 mA source/sink capability per I/O pin for direct LED drive, a Power-on Reset (POR), a Watchdog Timer (WDT), and a 16-byte EEPROM data area. The RISC core executes most instructions in a single 1-microsecond cycle (at 4 MHz).
Typical applications span low-cost consumer appliances, infrared remote controls, sensor signal conditioning, battery-powered timers, and automotive body electronics (non-safety). The 8-pin footprint also makes the part attractive as a one-time-programmable logic replacement in legacy systems and as a glue MCU between analog front-ends and wireless modules.
When designing with this device, ensure the VDD range stays within 2.5V-5.5V and that decoupling is placed within 3 mm of the supply pin. The OTP memory means firmware is final after programming - choose this part for mature, stable code rather than iterative prototyping.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a single manufacturer page, helping engineers compare the PIC12LCE519-04/SN with its 'CE' sibling and identify pin-compatible substitutes for EOL designs.
Drop-in alternatives for PIC12LCE519-04/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 PIC12LCE519-04/SN (same form factor and footprint) — differing in Package, Operating Temperature, Core Architecture, Timers, Watchdog Timer.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC12CE519-04/SN
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC12CE518-04E/SN
✅ Drop-In✓ In Stock
$1.38 / Unit
View Datasheet →PIC12LCE518-04I/SM
✅ Drop-In✓ In Stock
$0.86 / Unit
View Datasheet →PIC12F629-I/SN
✅ Drop-In✓ In Stock
$0.82 / Unit
View Datasheet →PIC12F508-I/SN
✅ Drop-In✓ In Stock
$0.31 / Unit
View Datasheet →PIC12LCE519-04/SN Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit RISC PIC12 |
| Program Memory Type | OTP (One-Time-Programmable) |
| Program Memory Size | 1.5 KB (1K x 12) |
| Data RAM | 41 bytes |
| Data EEPROM | 16 bytes |
| Maximum CPU Speed | 4 MHz |
| I/O Pins | 6 |
| I/O Source/Sink Current | 25 mA per pin |
| Supply Voltage (VDD) | 2.5 V to 5.5 V (L low-voltage core) |
| Oscillator Options | 4 (incl. internal 4 MHz RC, programmable calibration) |
| Package | 8-SOIC (SN, 0.154 inch / 3.90 mm body width) |
| Operating Temperature | 0 C to +70 C (commercial grade) |
| Mounting Type | Surface Mount |
| Terminal Form | GULL WING |
| RoHS Status | Lead free / RoHS Compliant |
PIC12LCE519-04/SN Pin Configuration
| Pin 1 | VDD — Positive supply voltage (2.5 V to 5.5 V) |
| Pin 2 | GP5/OSC1/CLKIN — GPIO / Oscillator input / External clock input |
| Pin 3 | GP4/OSC2/CLKOUT — GPIO / Oscillator output / Clock output |
| Pin 4 | GP3/MCLR/VPP — GPIO / Master Clear (reset) / Programming voltage |
| Pin 5 | GP2/T0CKI — GPIO / Timer0 clock input |
| Pin 6 | GP1 — GPIO |
| Pin 7 | GP0 — GPIO |
| Pin 8 | VSS — Ground reference |
Typical Applications
PIC12LCE519-04/SN is suitable for 6 applications: IR Remote Control Transmitter, Battery-Powered Timer and Delay Module, LED Driver and Lighting Controller, Automotive Body Electronics (non-safety), Sensor Signal Conditioning and Front-End, Cost-Optimized Logic Replacement (Glue MCU).
IR Remote Control Transmitter
The PIC12LCE519-04/SN's 8-pin SOIC footprint, 1.5 KB OTP, and 4 MHz internal RC oscillator make it a strong fit for IR remote control transmitter applications. The 25 mA I/O drive directly modulates an IR LED without an external transistor, and the 2.5 V minimum VDD allows operation from a single CR2032 coin cell for years of standby. The PIC12LCE519 typically runs a state-machine-based RC-5/RC-6 or NEC protocol encoder in 1 KB of code, leaving 512 words free for product-specific keymaps. Its commercial 0-70 C temperature range covers all consumer living-room environments, and the 8-SOIC hand-solders easily during prototyping.
Recommended
Battery-Powered Timer and Delay Module
For battery-powered timer and delay modules, the PIC12LCE519-04/SN's low-voltage 2.5 V-5.5 V VDD range lets the device run directly from two AA cells that have decayed to 1.25 V each. The 4 MHz internal RC oscillator eliminates the need for an external crystal, reducing both BOM cost and standby current. The 41-byte RAM is sufficient for elapsed-time counters in days/hours/minutes, and the Watchdog Timer with its own RC source catches firmware lockups in unattended deployments. With sleep current below 1 uA on the L core, a 2xAA pack can power a year-long irrigation or HVAC service timer.
Recommended
LED Driver and Lighting Controller
The 25 mA source/sink capability of each of the PIC12LCE519-04/SN's 6 I/O pins allows it to directly drive small LED arrays, status indicators, or single 7-segment displays without external transistors, making it well suited for low-cost LED lighting controllers. The 1.5 KB OTP holds color-sequence state machines, PWM tables, and fade curves for decorative lighting. The 4 MHz internal RC is stable enough for 8-bit PWM at refresh rates above 100 Hz, eliminating visible flicker. Commercial temperature grade is sufficient for indoor luminaires and accent strips; choose the I-temp variant for outdoor use.
Recommended
Automotive Body Electronics (non-safety)
Although the PIC12LCE519-04/SN is commercial grade, the same die is offered in I-temp variants for non-safety automotive body electronics such as door-lock indicators, mirror controllers, and ambient lighting drivers. Its small 8-SOIC package fits behind switches and inside mirror housings where PCB area is constrained. The 2.5 V-5.5 V VDD range tolerates 12 V battery transients after a simple LDO pre-regulation. Designers should note that AEC-Q100 qualification requires the automotive-grade version; the standard part is for non-safety, non-AEC-Q100 body modules.
Recommended
Sensor Signal Conditioning and Front-End
The PIC12LCE519-04/SN is a natural fit for sensor signal conditioning front-ends that require a small microcontroller to perform linearization, calibration, and PWM/SPI output of an analog sensor. The 41-byte RAM accommodates moving-average filters for temperature, pressure, or humidity sensors, and the 1.5 KB OTP stores lookup tables for non-linear sensor compensation. The 4 MHz core executes a 16-point FIR filter in under 100 microseconds, and the 6 I/O pins map to VCC, GND, sensor input enable, alarm output, and a UART/PWM data line. Pair with a MEMS sensor for a complete IoT-style sensor node.
Recommended
Cost-Optimized Logic Replacement (Glue MCU)
For designs that would otherwise use discrete 7400-series logic or a small PLD, the PIC12LCE519-04/SN provides a single-chip 8-bit programmable alternative that costs less than four logic gates at volume. Its 8-SOIC footprint replaces 2-3 small SO-8 logic packages, saving PCB area, and the 6 I/O pins can implement custom encoding, debouncing, sequencing, or protocol conversion that no fixed-logic part can match. Designers can prototype in OTP, then move to the flash-based PIC12F629-I/SN for the same PCB layout when firmware iterations are required.
Recommended
Recommended Products Summary
Engineering reference data for PIC12LCE519-04/SN — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12CE519-04/SN | PIC12CE518-04E/SN | PIC12LCE518-04I/SM | PIC12F629-I/SN | PIC12F508-I/SN |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 8-SOIC (SN, 3.90 mm body) | 8-SOIC (SN) - same | 8-SOIC (SN) - same | 8-SOIC (SM) - same | 8-SOIC (SN) - same | 8-SOIC (SN) - same |
| Program Memory | 1.5 KB OTP | 1.5 KB OTP | 0.75 KB OTP | 0.75 KB OTP | 1 KB Flash | 0.75 KB Flash |
| Data RAM | 41 B | 41 B | 25 B | 25 B | 64 B | 25 B |
| Data EEPROM | 16 B | 16 B | 16 B | 16 B | 128 B | None |
| Max CPU Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz | 4 MHz |
| VDD Range | 2.5 V to 5.5 V (L) | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 2.5 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| I/O Pins | 6 | 6 | 6 | 6 | 6 | 6 |
| RoHS / Lead-Free | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Low-voltage 2.5 V minimum VDD core (vs PIC12CE519-04/SN)
- Larger 1.5 KB OTP vs 0.75 KB in CE518 / LCE518 siblings (vs PIC12CE518-04E/SN)
- Lower unit cost with 8-SOIC (SN) standard footprint (vs PIC12F629-I/SN)
Design Notes
Place a 0.1 uF ceramic decoupling capacitor within 3 mm of the VDD pin (pin 1), with the ground return via a short trace to pin 8. For battery applications, add a 10 uF bulk capacitor near the supply to handle the inrush of an LED or buzzer load and prevent VDD droop below 2.5 V. The L low-voltage core will brown-out cleanly if VDD drops below the BOD threshold, and the Power-on Reset (POR) will re-initialize all registers reliably on recovery.
The 8-SOIC (SN, 0.154 inch / 3.90 mm body) footprint accepts 0.65 mm pitch SO-8 hand-solder pads. Route the MCLR/GP3 pin (pin 4) away from switching traces to avoid spurious resets; if not used, tie MCLR to VDD through a 10 kohm resistor. The OSC1/OSC2 pins (pins 2 and 3) can be left floating when using the internal 4 MHz RC oscillator, but keep-out copper pour within 2 mm of these pads to reduce stray capacitance that could detune the internal oscillator calibration.
Do not assume OTP firmware is erasable - the 'C' in PIC12C means EPROM, and the LCE519 is OTP. Plan your code revision carefully or use a flash-based PIC12F-series for prototyping. Avoid exceeding the 25 mA per-pin source/sink limit or the 100 mA total port budget; the absolute maximum is not 100% derated for hot operation. For in-circuit programming, MPLAB PM3 or PICkit is required; the device has no ICSP-disable fuse, so leave the MCLR/PGM pin accessible for production programming.
Compliance Information
RoHS compliant and lead-free per distributor listings. Commercial temperature grade (0 C to +70 C) - not AEC-Q100 qualified; choose the I-temp / automotive-graded variant for AEC-Q100 applications. REACH, halogen-free, and conflict-minerals status not stated in the provided data.
