PIC12LCE519-04I/SM - 8-bit OTP MCU, 1.5KB EPROM, 4MHz | Microchip
MPN: PIC12LCE519-04I/SM ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.79 | $1.79 |
| 10 | $1.61 | $16.10 |
| 100 | $1.43 | $143.00 |
| 500 | $1.25 | $625.00 |
| 1,000 | $1.07 | $1,070.00 |
PIC12LCE519-04I/SM Overview
What is an 8-bit microcontroller? An 8-bit MCU is a small, self-contained computing device built around an 8-bit data path, integrating a CPU, program memory (ROM/EPROM/Flash), working RAM, and peripheral I/O on a single die. The PIC12LCE519 belongs to the PIC12C/LC5xx family of low-cost, low-pin-count Microchip microcontrollers, sitting within the broader PIC architecture taxonomy: PIC12 -> baseline 8-bit RISC -> 8-bit microcontroller -> microcontroller -> embedded IC -> semiconductor. The 'LC' prefix denotes the low-voltage CMOS process variant.
Key differentiating features include an 8-bit real-time clock/counter (TMR0) with programmable prescaler, power-on reset (POR), device reset timer (DRT), watchdog timer (WDT) with dedicated on-chip RC oscillator, and integrated EEPROM-style data memory suitable for storing user configuration and calibration values. The '04' speed grade denotes 4 MHz maximum clock input, while the 'I' suffix designates the industrial operating temperature range.
The architecture uses a Harvard-style memory layout with separate program and data buses, 12-bit wide instruction words, and 8-bit wide data paths. This allows single-cycle instruction execution for most opcodes while program branches take two cycles. The 6 I/O pins share peripheral functions including timer I/O and interrupt sources.
Typical applications include low-cost consumer appliances, automotive body electronics (non-safety), battery-powered sensor nodes, simple LED drivers, remote-control transmitters, and small white goods controllers. The wide voltage tolerance allows direct connection to unregulated 3.3 V or 5 V rails without additional regulation. Industrial-grade temperature rating extends usability to harsh environments.
When designing with the PIC12LCE519, ensure the oscillator configuration bits match the system clock requirement and consider the EPROM programming window for one-time-programmed production units. The SOIJ package requires standard surface-mount reflow; the J-Lead form factor improves solder joint reliability on automated assembly lines compared to standard SOIC gull-wing leads.
Drop-in alternatives for PIC12LCE519-04I/SM — 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 PIC12LCE519-04I/SM (same form factor and footprint) — differing in Program Memory Size, Core Architecture, RAM Size, Instruction Execution Time, Operating Temperature Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC12CE519-04I/SM
✅ Drop-In📋 Reference alternative (not in catalog)
PIC12LCE519T-04I/SM
✅ Drop-In📋 Reference alternative (not in catalog)
PIC12CE518-04E/SM
✅ Drop-In✓ In Stock
$1.6 / Unit
View Datasheet →PIC12LC509A-04I/SM
✅ Drop-In✓ In Stock
$0.71 / Unit
View Datasheet →PIC12C508A-04I/SM
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC12LCE519-04I/SM Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC |
| Program Memory Size | 1.5 KB EPROM (OTP) |
| RAM Size | 41 bytes |
| Maximum Clock Frequency | 4 MHz |
| Instruction Cycle Time | 1 microsecond (single cycle) |
| Supply Voltage Range | 2.5 V to 5.5 V |
| I/O Pins | 6 |
| Timers | TMR0 with 8-bit programmable prescaler |
| Watchdog Timer | Yes, with dedicated on-chip RC oscillator |
| Program Memory Type | OTP EPROM |
| Package Type | 8-pin SOIJ (SM) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | Industrial (I suffix) |
| Number of Instructions | 33 single-word |
| Data EEPROM | On-chip (per family) |
| Power-On Reset | Yes (POR + Device Reset Timer) |
PIC12LCE519-04I/SM Pin Configuration
| Pin 1 | VDD — Positive supply voltage (2.5V to 5.5V) |
| Pin 2 | GP5/OSC1/CLKIN — General-purpose I/O / Oscillator crystal input / External clock input |
| Pin 3 | GP4/OSC2/CLKOUT — General-purpose I/O / Oscillator crystal output / Clock output |
| Pin 4 | GP3/MCLR/VPP — General-purpose input / Master Clear reset (active low) / Programming voltage |
| Pin 5 | GP2/T0CKI — General-purpose I/O / Timer0 clock input |
| Pin 6 | GP1 — General-purpose I/O |
| Pin 7 | GP0 — General-purpose I/O |
| Pin 8 | VSS — Ground reference |
Typical Applications
PIC12LCE519-04I/SM is suitable for 7 applications: Low-Cost Consumer Appliance Control, Battery-Powered Sensor Node, Remote Control Transmitter, Automotive Body Electronics (Non-Safety), LED Driver / Lighting Controller, Smart Home Sensor Hub, White Goods Control Board.
Low-Cost Consumer Appliance Control
The PIC12LCE519-04I/SM fits low-cost consumer appliance control applications because it combines a 33-instruction RISC core with 1.5 KB OTP EPROM, 6 I/O pins, and a 2.5 V to 5.5 V operating range in an 8-pin SOIJ package. The 4 MHz clock and 1 microsecond instruction cycle are sufficient to service simple control loops such as button debouncing, LED sequencing, relay timing, and small protocol handlers. The OTP EPROM reduces per-unit cost compared with Flash MCUs for high-volume production.
Recommended
Battery-Powered Sensor Node
The PIC12LCE519-04I/SM suits battery-powered sensor nodes due to its 2.5 V to 5.5 V supply tolerance, which permits direct connection to 3.3 V or 5 V rails. The 41 bytes of RAM and 6 I/O pins support small sensor signal-conditioning loops with periodic sleep cycles controlled by the watchdog timer and TMR0 prescaler. The SOIJ package occupies less PCB area than DIP alternatives, enabling compact wearable or disposable designs.
Recommended
Remote Control Transmitter
The PIC12LCE519-04I/SM is well matched to remote-control transmitter applications where low cost and low pin count are essential. The TMR0 prescaler and 6 I/O pins can drive IR LEDs via PWM-like bit-banging while the on-chip data EEPROM stores pairing codes. The wide supply range tolerates 2-cell battery operation down to 2.5 V, extending battery life. The industrial temperature rating suits outdoor and automotive cabin applications.
Recommended
Automotive Body Electronics (Non-Safety)
The PIC12LCE519-04I/SM supports non-safety automotive body electronics such as interior lighting, seat controllers, and accessory modules. The industrial temperature range (-40C to +85C typical) and wide voltage tolerance accommodate 12 V battery rail variations after regulation. The 33-instruction RISC core and 1 microsecond cycle time handle simple state-machine logic. For safety-critical or AEC-Q100 requirements, choose AEC-qualified variants from the PIC12 family.
Recommended
LED Driver / Lighting Controller
The PIC12LCE519-04I/SM controls LED strings and small lighting fixtures by toggling I/O pins with software-driven PWM at modest frequencies. The 4 MHz clock produces PWM frequencies in the audible avoidance band when 8-bit resolution is needed, while the 41 bytes of RAM accommodate lookup tables for color mixing or fade sequences. The SOIJ package handles moderate reflow profiles reliably, and the 2.5 V to 5.5 V range covers single-cell Li-ion and USB-powered installations.
Recommended
Smart Home Sensor Hub
The PIC12LCE519-04I/SM is appropriate for compact smart-home sensor hubs handling motion, temperature, or contact closure inputs. Six I/O pins connect directly to digital sensors or analog front-ends with on-chip comparators. The on-chip data EEPROM stores calibration constants and last-known state across power cycles. The low BOM cost and small 8-pin SOIJ footprint enable discrete, wall-mounted sensor modules with minimal PCB size.
Recommended
White Goods Control Board
The PIC12LCE519-04I/SM serves white goods control boards such as microwave keypads, washing machine front panels, and small kitchen appliances. Its industrial temperature range tolerates the elevated ambient temperatures inside appliance enclosures, while the OTP EPROM protects firmware IP in competitive markets. The 1 microsecond instruction cycle at 4 MHz is sufficient for keypad scanning, display multiplexing, and simple motor-control timing.
Recommended
Recommended Products Summary
Engineering reference data for PIC12LCE519-04I/SM — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12CE519-04I/SM | PIC12LCE519T-04I/SM | PIC12LC509A-04I/SM | PIC12C508A-04I/SM | PIC12CE518-04E/SM |
|---|---|---|---|---|---|---|
| Package | 8-pin SOIJ (SM) | 8-pin SOIJ (SM) - same | 8-pin SOIJ (SM) - same | 8-pin SOIJ (SM) - same | 8-pin SOIJ (SM) - same | 8-pin SOIJ (SM) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 1.5 KB OTP EPROM | 1.5 KB OTP EPROM | 1.5 KB OTP EPROM | 1.5 KB Flash (LC family) | 0.75 KB OTP EPROM | 0.75 KB OTP EPROM |
| RAM | 41 bytes | 41 bytes | 41 bytes | 41 bytes | 25 bytes | 25 bytes |
| Supply Voltage | 2.5 V to 5.5 V | 3.0 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 3.0 V to 5.5 V |
| Max Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| I/O Pins | 6 | 6 | 6 | 6 | 6 | 6 |
| Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | Flash | OTP EPROM | OTP EPROM |
Key Differentiators
- Widest low-voltage operation in its family (vs PIC12CE519-04I/SM)
- Largest OTP EPROM in 8-pin SOIJ family (vs PIC12C508A-04I/SM)
- OTP EPROM protects firmware IP at lowest cost (vs PIC12LC509A-04I/SM)
Design Notes
Estimated: At 4 MHz clock and 5 V supply, the PIC12LCE519 typically draws 1 to 2 mA active and a few microamps in sleep mode. Always place a 0.1 microfarat decoupling capacitor close to the VDD pin to suppress digital switching noise. For battery-powered designs, use the watchdog timer and SLEEP instruction aggressively to extend battery life; verify the chosen battery chemistry can source the active current peaks without significant voltage droop.
The 8-pin SOIJ package uses J-leads, which require careful pad geometry per the Microchip SOIJ land-pattern recommendation. Place the device away from board edges to reduce stress during depanelization. Provide a solid ground pour under and around the device for thermal dissipation and EMI reduction. Avoid routing high-speed signals (none expected at 4 MHz) directly adjacent to the MCLR/VPP pin to prevent unintended reset during programming or transient events.
MCLR must be tied to VDD through a resistor (typically 10 kOhm) or driven by the internal MCLR circuit if unused; floating MCLR causes spurious resets. The configuration bits must be set correctly to select the oscillator mode (XT, LP, RC, or external clock) - a mismatch prevents startup. For OTP devices, verify firmware thoroughly before programming because OTP cannot be erased. The GP3 pin is input-only - do not configure it as an output.
Compliance Information
RoHS compliant per Microchip product page. Industrial temperature range (I suffix). Not AEC-Q100 qualified - choose AEC-Q100 parts from the PIC12 family for automotive safety applications. Halogen-free status not specified in verified data.
