PIC12LCE519-04I/P - 8-Bit 4MHz CMOS MCU w/ EEPROM DIP-8 | Microchip
MPN: PIC12LCE519-04I/P β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.18 | $2.18 |
| 10 | $1.96 | $19.60 |
| 100 | $1.74 | $174.00 |
| 500 | $1.52 | $760.00 |
| 1,000 | $1.31 | $1,310.00 |
PIC12LCE519-04I/P Overview
What is a PIC12 microcontroller? The PIC12 family is Microchip's baseline 8-bit CMOS microcontroller line based on the 14-bit enhanced mid-range architecture, optimized for low pin-count, low-power, cost-sensitive embedded tasks. It sits hierarchically under PIC16 (mid-range) and PIC18 (high-end 8-bit) in Microchip's 8-bit product tree. Variants such as the PIC12LCE519 add integrated serial EEPROM that can be read/written during runtime for parameter storage, distinguishing them from PIC12C5xx OTP-only siblings.
Key features include industrial-grade -40C to +85C operation, 2.5V to 5.5V single-supply operation, low-power CMOS design, and a wide range of oscillator options (RC, LP, XT, HS, INTOSC). The "L" prefix indicates the low-voltage (2.5V) variant of the PIC12CE519 family; "04" denotes 4 MHz maximum clock; "I" indicates the industrial temperature grade; and "/P" specifies the PDIP-8 through-hole package.
Typical applications include consumer appliance controllers, battery-powered sensor nodes, smart lighting controls, security alarm keypads, and educational/hobbyist projects. The integrated EEPROM makes it especially well-suited to designs that need to retain user settings, calibration constants, or tamper counters across power cycles without an external memory IC.
Design tip: When migrating designs that were originally built around a PIC12C5xx OTP-only part, replacing it with the PIC12LCE519 lets you add 16 bytes of non-volatile storage at zero PCB cost - but you must still verify timing, oscillator mode, and ICD pin assignments match.
This page synthesizes distributor pricing (as of 2026-09-16), same-family and cross-family drop-in alternatives, application notes, and design notes not aggregated in any single manufacturer datasheet.
Drop-in alternatives for PIC12LCE519-04I/P 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 PIC12LCE519-04I/P (same form factor and footprint) β differing in Operating Temperature, Package, Core Architecture, Instruction Set, MSL Level.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC12CE519-04I/P
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
PIC12F519-I/P
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$1.05 / Unit
View Datasheet βPIC12CE519-04/P
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$1.5 / Unit
View Datasheet βPIC12LCE519-04I/P Maximum Ratings & Electrical Characteristics
| Core Architecture | Enhanced PIC16C5X (14-bit instruction, 8-bit data) |
| Program Memory (OTP) | 1.5 KB (1K x 12 words) |
| Data Memory (RAM) | 41 bytes |
| EEPROM Data Memory | 16 bytes |
| Maximum Clock Frequency | 4 MHz |
| Supply Voltage (Vdd) | 2.5 V to 5.5 V |
| I/O Pins | 6 |
| Timers | TMR0 (8-bit) with 8-bit programmable prescaler |
| Watchdog Timer (WDT) | Yes, with dedicated on-chip RC oscillator |
| Reset Sources | Power-On Reset (POR), Device Reset Timer (DRT) |
| Instruction Set | 33 single-word instructions |
| Operating Temperature | -40C to +85C (Industrial grade) |
| Package | PDIP-8 (300 mil, through-hole) |
| Mounting Type | Through-Hole |
| ROM Type | OTP |
| Oscillator Modes | RC, LP, XT, HS, INTOSC |
PIC12LCE519-04I/P Pin Configuration
| Pin 1 | VDD β Positive supply voltage, 2.5 V to 5.5 V |
| Pin 2 | GP5/OSC1/CLKIN β Bidirectional I/O pin GP5; oscillator input or external clock input |
| Pin 3 | GP4/OSC2/CLKOUT β Bidirectional I/O pin GP4; oscillator output or clock output (Fosc/4) |
| Pin 4 | GP3/MCLR/VPP β Input-only I/O pin GP3; master-clear reset (active low); programming voltage input |
| Pin 5 | GP2/T0CKI/INT β Bidirectional I/O pin GP2; TMR0 clock input; external interrupt input |
| Pin 6 | GP1 β Bidirectional I/O pin GP1 |
| Pin 7 | GP0 β Bidirectional I/O pin GP0 |
| Pin 8 | VSS β Ground reference |
Typical Applications
PIC12LCE519-04I/P is suitable for 6 applications: Battery-Powered Sensor Node Controller, Consumer Appliance User Interface Controller, Security Alarm Keypad / Access Control, Smart Lighting / LED Strip Controller, Educational / Hobbyist Microcontroller Projects, Industrial Sensor Transmitter Front-End.
Battery-Powered Sensor Node Controller
The PIC12LCE519's 2.5V minimum Vdd lets it keep running deep into alkaline battery discharge where a 3.0V PIC12CE519 would brown out. With 4 MHz MIPS throughput, 41 bytes of RAM, and 16 bytes of EEPROM for storing calibration constants across power cycles, the part fits wireless sensor nodes, smart thermostats, and remote controls. Designers can sleep the WDT-driven TMR0 between sensor reads to extend battery life to multi-year levels. The 6 I/O pins comfortably drive an SPI temperature/humidity sensor plus a status LED. Pin-to-pin compatibility with PIC12F519-I/P provides a flash-upgrade path once firmware stabilizes.
Recommended
Consumer Appliance User Interface Controller
Kitchen appliances, washing machines, and small white goods often need a low-cost 8-pin MCU to scan keypads, drive 7-segment LEDs, and remember user preferences across power cycles. The PIC12LCE519's 6 I/O pins are sufficient for a 3x2 keypad matrix plus two LED drivers; its 16-byte EEPROM stores last-mode and timer-set values without an external memory IC. At 4 MHz the firmware can debounce keys and multiplex displays with timing headroom. Industrial -40C to +85C operation matches appliance under-cabinet environments.
Recommended
Security Alarm Keypad / Access Control
Access-control keypads and alarm panels require non-volatile storage of user codes and event logs - exactly what the PIC12LCE519's 16-byte on-chip EEPROM provides. The 33-instruction RISC core simplifies deterministic scan-and-debounce loops; the WDT guards against firmware lockup during keypad scanning. Six I/O pins handle a 3x4 keypad matrix in a multiplexed configuration, leaving one pin for a buzzer or status LED. The 2.5V-5.5V range allows battery-backed 3.3V designs with brown-out immunity.
Recommended
Smart Lighting / LED Strip Controller
Low-cost RGB or single-channel LED controllers based on the PIC12LCE519 can use TMR0 with prescaler to generate accurate PWM dimming without an external timer IC. The integrated EEPROM stores the last brightness/color setting so the user setting persists across power cycles. Industrial temperature grade suits both indoor luminaires and outdoor fixtures with sealed enclosures. The 6 I/O pins support an SPI LED driver chain plus a momentary pushbutton and indicator LED.
Recommended
Educational / Hobbyist Microcontroller Projects
The PIC12LCE519's 33-instruction RISC core, broad hobbyist documentation, MPLAB X IDE support, and PDIP-8 through-hole package make it a frequent choice for breadboard-friendly learning kits and Arduino-comparison demonstrations. Engineering students can exercise OTP programming, oscillator modes (RC, XT, LP, HS, INTOSC), and the on-chip EEPROM data memory in one inexpensive IC. The DIP-8 outline fits standard 8-pin IC sockets for easy swapping during lab work.
Recommended
Industrial Sensor Transmitter Front-End
Industrial 4-20 mA loop-powered or 0-10V sensor transmitters need a low-power MCU that can run from unregulated supplies down to 2.5V and survive -40C to +85C. The PIC12LCE519 delivers exactly that envelope. Its 6 I/O can interface a strain-gauge bridge via an external op-amp, drive a DAC for 4-20 mA loop output, and toggle a HART modem enable line. EEPROM holds calibration coefficients; TMR0 with WDT guards against firmware stalls on noisy industrial buses.
Recommended
Recommended Products Summary
Engineering reference data for PIC12LCE519-04I/P β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12CE519-04I/P | PIC12F519-I/P | PIC12CE519-04/P | PIC12LCE518-04I/SM |
|---|---|---|---|---|---|
| Package | PDIP-8 (300 mil) | PDIP-8 (300 mil) - same | PDIP-8 (300 mil) - same | PDIP-8 (300 mil) - same | SOIC-8 (SM) - DIFFERENT |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 1.5 KB OTP | 1.5 KB OTP | 1.5 KB Flash | 1.5 KB OTP | 0.75 KB OTP |
| RAM | 41 bytes | 41 bytes | 41 bytes | 41 bytes | 25 bytes |
| EEPROM | 16 bytes | 16 bytes | 16 bytes | 16 bytes | 16 bytes |
| Max Clock | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Supply Voltage | 2.5 V to 5.5 V | 3.0 V to 5.5 V | 2.5 V to 5.5 V | 3.0 V to 5.5 V | 2.5 V to 5.5 V |
| Temperature Grade | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Commercial (0C to +70C) | Industrial (-40C to +85C) |
| I/O Pins | 6 | 6 | 6 | 6 | 6 |
| ROM Type | OTP | OTP | Flash (in-circuit reprogrammable) | OTP | OTP |
Key Differentiators
- Low-voltage 2.5 V Vdd_min operation vs 3.0 V on standard PIC12CE519 (vs PIC12CE519-04I/P)
- Forward-compatible Flash-based equivalent available on the same PDIP-8 footprint (vs PIC12F519-I/P)
- 16-byte integrated EEPROM data memory vs no EEPROM on PIC12C5xx OTP-only line (vs PIC12C508A-04I/P)
Design Notes
The PIC12LCE519 draws supply current in the low-mA range at 4 MHz / 5 V per the datasheet DC characteristics; idle current with the WDT disabled can drop to microampere range with the SLEEP instruction. For battery-powered designs, use TMR0 wake-from-Sleep and disable the WDT between sample intervals to extend coin-cell or 2x AA lifetime. Estimated: at 3.0 V Vdd and 32 kHz LP oscillator, average current can be held under 50 uA in a 1%-duty-cycle sensor-read application.
Place a 0.1 uF decoupling capacitor as close as possible between Vdd (pin 1) and Vss (pin 8); add a 10 uF bulk capacitor on the Vdd rail if the supply impedance is non-trivial. For designs with an external crystal or resonator on OSC1/OSC2, route the crystal traces short, symmetric, and guard them with a ground ring to reduce EMI. MCLR (pin 4) should be tied to Vdd through a 10 kohm pull-up if not used as a reset button; adding a 100 nF cap on MCLR prevents false resets from fast ESD transients.
Do not exceed Vdd = 5.5 V on the L-variant - the PIC12LCE519 is rated 2.5 V to 5.5 V, and overvoltage destroys the EEPROM write circuitry. Configure the oscillator mode (FOSC configuration bits) before programming; LP mode with a low-frequency 32.768 kHz crystal will not give correct timing for 4 MHz instruction execution. The GP3 pin is input-only - do not drive it as an output or use bidirectional logic that requires driving this pin. Always enable the WDT in safety-critical or watchdog-required firmware, but disable it for low-power Sleep-based designs.
When using GP2 as the external interrupt (INT) input, keep the trace short and add a small RC filter (1 kohm + 100 pF) if the interrupt source is a mechanical switch or relay contact. TMR0 clock input (T0CKI on GP2) can be configured for an external event source; debounce the input with a 10-100 nS Schmitt trigger filter when counting noisy mechanical events. The CLKOUT pin (Fosc/4) on GP4 can be used to clock external glue logic, but ensure the load capacitance budget keeps the oscillator within its spec.
Compliance Information
RoHS/REACH/lead-free status not explicitly confirmed in the verified web data; Microchip typically ships PDIP-8 industrial parts with lead-free matte-tin plating, but compliance should be verified against the lot-specific declaration. AEC-Q100 not applicable - the PIC12LCE519 is a general-purpose MCU, not an automotive-qualified part. Designers needing AEC-Q100 should consider PIC12F519-E/P or PIC12HV615-I/P automotive variants.
