PIC12LCE519T-04/SM - 8-Bit PIC MCU, 1.5KB OTP, 4MHz, 8-SOIJ
MPN: PIC12LCE519T-04/SM β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.76 | $1.76 |
| 10 | $1.58 | $15.80 |
| 100 | $1.41 | $141.00 |
| 500 | $1.24 | $620.00 |
| 1,000 | $1.08 | $1,080.00 |
PIC12LCE519T-04/SM Overview
What is a microcontroller? An MCU (microcontroller unit) is a single-chip computer containing a CPU core, program memory (ROM/Flash/OTP), working RAM, and integrated peripherals such as timers, ADC, and communication interfaces. The PIC12 family sits at the entry level of Microchip's 8-bit PIC portfolio, optimized for low pin count, low cost, and deterministic real-time control in space-constrained designs. The PIC architecture (modified Harvard RISC) traces its lineage to General Instrument's 1970s design and remains widely deployed in appliances, automotive sub-systems, and industrial sensors.
Key specifications include 1.5KB OTP program memory, 41x8 RAM, 16x8 EEPROM, six I/O, 4 MHz maximum clock, and a brown-out detect / power-on reset supervisor. The device operates across 2.5V to 5.5V (LCE low-voltage variant) and is specified for the commercial 0C to +70C temperature range (the -04 speed grade denotes 4 MHz). Peripherals include one 8-bit timer/counter with prescaler, watchdog timer, and an internal oscillator calibration.
The PIC12LCE519T-04/SM uses a 12-bit instruction word PIC core with a 2-stage pipeline, executing most instructions in a single instruction cycle. OTP (one-time programmable) program memory makes this part suited for production runs where code stability is locked at programming time. The 8-SOIJ package features a J-leaded outline for improved board-level reliability versus gull-wing SOIC.
Typical applications include small appliance controllers, LED drivers, remote-control transmitters, sensor signal conditioning, and battery-powered consumer devices. Designers choose this part for cost-sensitive embedded tasks requiring 6 or fewer I/O lines.
When designing with the PIC12LCE519T-04/SM, ensure the ICSP (In-Circuit Serial Programming) pins are accessible for production programming. The OTP variant cannot be reprogrammed, so production firmware must be verified before programming. For in-circuit reprogrammability, choose a Flash-based PIC12F variant instead.
This page synthesizes distributor pricing, drop-in alternatives from the Microchip PIC12 family, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC12LCE519T-04/SM β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC12LCE519-04/SM
β Drop-Inπ Reference alternative (not in catalog)
PIC12LCE519T-04I/SM
β Drop-Inπ Reference alternative (not in catalog)
PIC12LCE519T-04E/SM
β Drop-Inπ Reference alternative (not in catalog)
PIC12CE519T-04/SM
β Drop-Inπ Reference alternative (not in catalog)
PIC12CE519-04I/SM
β Drop-Inβ In Stock
$1.74 / Unit
View Datasheet βPIC12CE518-04/SM
β Drop-Inπ Reference alternative (not in catalog)
PIC12LCE519T-04/SM Maximum Ratings & Electrical Characteristics
| Core Processor | PIC |
| Core Size | 8-Bit |
| Core Architecture | RISC (Modified Harvard) |
| Instruction Set | 33 single-word instructions |
| Program Memory Size | 1.5 KB (1K x 12) |
| Program Memory Type | OTP |
| RAM Size | 41 x 8 (41 bytes) |
| EEPROM Size | 16 x 8 (16 bytes) |
| Maximum Clock Frequency | 4 MHz |
| Instruction Cycle Time | 1 microsecond at 4 MHz |
| Number of I/O Pins | 5 GPIO + 1 input-only = 6 I/O |
| Operating Temperature | 0C to +70C (commercial) |
| Peripherals | POR, WDT, 8-bit Timer |
| Package | 8-SOIJ (5.30 mm body width) |
| Mounting Type | Surface Mount |
| Speed Grade Suffix | -04 = 4 MHz |
PIC12LCE519T-04/SM Pin Configuration
| Pin 1 | GP5/OSC1/CLKIN β GPIO port bit 5 / oscillator input / external clock input |
| Pin 2 | GP4/OSC2/CLKOUT β GPIO port bit 4 / oscillator output / clock output |
| Pin 3 | GP3/MCLR/VPP β GPIO port bit 3 / Master Clear reset (active low) / programming voltage |
| Pin 4 | GP2/T0CKI/AN2 β GPIO port bit 2 / Timer0 clock input / analog input 2 |
| Pin 5 | GP1/AN1/CIN- β GPIO port bit 1 / analog input 1 / comparator inverting input |
| Pin 6 | GP0/AN0/CIN+ β GPIO port bit 0 / analog input 0 / comparator non-inverting input |
| Pin 7 | VSS β Ground reference |
| Pin 8 | VDD β Positive supply voltage |
Typical Applications
PIC12LCE519T-04/SM is suitable for 6 applications: Small Appliance Control, Remote Control Transmitter, LED Lighting Driver Controller, Battery-Powered Sensor Interface, Automotive Accessory Controller, Toy and Hobby Electronics.
Small Appliance Control
The PIC12LCE519T-04/SM fits small appliance controllers (coffee makers, toasters, blenders) where its 1.5KB OTP program memory holds a fixed control sequence, six I/O drive buttons, relays, and LED indicators, while 4 MHz operation keeps instruction latency low. The internal oscillator eliminates external crystal cost and the 8-SOIJ package withstands typical kitchen temperature cycling. The 16-byte EEPROM retains user presets across power cycles, and the low-voltage LCE variant supports 2xAA battery operation.
Recommended
Remote Control Transmitter
The PIC12LCE519T-04/SM works as the encoder in IR/RF remote controls where it reads a 4x4 button matrix on its six I/O pins, generates a Manchester-coded transmission, and enters sleep mode between button presses for battery life. At 4 MHz the device generates precise carrier frequencies (e.g., 38 kHz for IR) with software PWM. The 1.5KB OTP stores the encoding protocol table, and the 41-byte RAM is sufficient for key debounce and buffer state.
Recommended
LED Lighting Driver Controller
The PIC12LCE519T-04/SM serves as the controller in decorative and architectural LED drivers, where it executes PWM dimming sequences via its 8-bit timer, monitors temperature through a discrete NTC divider, and handles button/IR input. Its 4 MHz clock supports software PWM up to 16 kHz to avoid audible flicker, and the OTP memory locks the lighting curve at production. The 8-SOIJ package handles the moderate thermal dissipation of a logic-only MCU role.
Recommended
Battery-Powered Sensor Interface
The PIC12LCE519T-04/SM is suited to wireless sensor nodes and battery-powered transducers where it digitizes sensor inputs through an external ADC, manages wake-up cycles via the watchdog timer, and transmits results on a UART or one-wire interface. The LCE low-voltage variant extends battery life down to 2.5V, while the 16-byte EEPROM stores calibration constants. Six I/O pins handle sensor, enable, TX, and LED status functions.
Recommended
Automotive Accessory Controller
The PIC12LCE519T-04/SM is used in body-electronics accessories such as seat heaters, mirror adjusters, and aftermarket lighting controllers, where it reads position switches and drives relays/MOSFETs via its six I/O pins. The extended-temperature variant -04E/SM supports -40C to +125C automotive environments, while the OTP memory locks the production firmware. 1 microsecond instruction cycle gives deterministic response to button debounce and timer interrupts.
Recommended
Toy and Hobby Electronics
The PIC12LCE519T-04/SM serves as the brain in cost-sensitive toys, hobby kits, and educational microcontroller boards where absolute minimum BOM cost is the primary design constraint. At under $1.10 per unit at 1,000-piece reels, the part provides full 8-bit processing, six I/O for sensors/motors/LEDs, and 1.5KB OTP for behavior programming. The internal 4 MHz RC oscillator eliminates external timing components, and the SOIJ package supports standard pick-and-place.
Recommended
Recommended Products Summary
Engineering reference data for PIC12LCE519T-04/SM β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12LCE519-04/SM | PIC12LCE519T-04I/SM | PIC12LCE519T-04E/SM | PIC12CE519T-04/SM | PIC12CE518-04/SM |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 8-SOIJ (5.30mm) | 8-SOIJ - same | 8-SOIJ - same | 8-SOIJ - same | 8-SOIJ - same | 8-SOIJ - same |
| Program Memory | 1.5 KB OTP | 1.5 KB OTP | 1.5 KB OTP | 1.5 KB OTP | 1.5 KB OTP | 1.5 KB OTP |
| RAM | 41 bytes | 41 bytes | 41 bytes | 41 bytes | 41 bytes | 41 bytes |
| EEPROM | 16 bytes | 16 bytes | 16 bytes | 16 bytes | 16 bytes | 0 bytes (not present) |
| Clock Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| I/O Pins | 6 | 6 | 6 | 6 | 6 | 6 |
| Temperature Grade | Commercial 0C to +70C | Commercial | Industrial -40C to +85C | Extended -40C to +125C | Commercial | Commercial |
Key Differentiators
- Includes 16-byte on-chip EEPROM data memory (vs PIC12CE518-04/SM)
- Low-voltage (LCE) operation down to 2.5V (vs PIC12CE519T-04/SM)
- Tape-and-reel packaging for high-volume SMT (vs PIC12LCE519-04/SM (tube))
Design Notes
The PIC12LCE519T-04/SM draws approximately 2 mA active current at 4 MHz and 5V, dropping to single-digit microamps in sleep mode. Place a 100 nF decoupling capacitor as close as possible between VDD (pin 8) and VSS (pin 7), plus a bulk 10 uF electrolytic or tantalum capacitor on the same supply rail. For battery applications, the LCE low-voltage variant extends operation down to 2.5V; add a series ferrite bead if the supply is shared with a noisy switching regulator.
When using an external crystal or resonator, place it within 5 mm of the OSC1/OSC2 pins (GP5/GP4) and surround it with a ground guard ring to reduce radiated EMI. If the internal 4 MHz RC oscillator is used instead, leave GP5/GP4 as digital I/O and connect them normally. Trace MCLR (pin 3) directly to VDD through a 10 kohm pull-up; do not leave it floating, or random resets will occur during power-up transients.
The OTP variant cannot be reprogrammed or erased; verify firmware thoroughly using a Flash-based PIC12F emulation part during development before committing to OTP production programming. ICSP programming requires the MCLR/VPP pin to be brought to ~13V; ensure any external circuitry on GP3 does not load this pin below 5 kohm or programming will fail. Configuration word (oscillator, watchdog, code protect) must be set during programming - once locked, OTP cannot change it.
The 8-SOIJ package dissipates negligible power in this CMOS design (typical 2 mA active at 5V = 10 mW). Junction temperature rise is well below 1C even with the modest theta_JA of the SOIJ package, so no thermal management is required. The industrial-grade PIC12LCE519T-04I/SM and extended-grade PIC12LCE519T-04E/SM variants extend the operating envelope to -40C/+85C and -40C/+125C respectively for harsh-environment deployment.
Compliance Information
RoHS and REACH compliance status not explicitly stated in verified web data; using 'unknown' per data authenticity rules. Not AEC-Q100 qualified - choose the PIC12LCE519T-04E/SM for extended temperature, but it is not formally automotive-qualified either.
