PIC12CE519-04E/SM - 8-bit OTP MCU, 1.5KB, 4MHz | Microchip
MPN: PIC12CE519-04E/SM ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.4 | $2.40 |
| 10 | $2.15 | $21.50 |
| 100 | $1.78 | $178.00 |
| 500 | $1.45 | $725.00 |
| 1,000 | $1.18 | $1,180.00 |
PIC12CE519-04E/SM Overview
An 8-bit microcontroller (MCU) is a small, self-contained computer-on-a-chip built around a CPU, program memory, working RAM, non-volatile data storage, and I/O peripherals. Within the broader semiconductor hierarchy, the PIC12CE519 sits under: 8-bit MCU -> microcontroller -> embedded processor -> integrated circuit. Microchip's PIC architecture is a RISC (Reduced Instruction Set Computer) core using single-word, single-cycle instructions, which simplifies coding while keeping deterministic interrupt latency for real-time control.
Key features include a programmable 4 MHz internal RC oscillator (with calibration), four oscillator selection modes, a Watchdog Timer (WDT) with dedicated on-chip RC oscillator for reliable operation, Power-on Reset (POR), Device Reset Timer (DRT), and code protection. The EEPROM data memory supports 1,000,000 erase/write cycles, making the part suitable for storing calibration constants, user preferences, and trim values that must persist across power cycles.
The PIC12CE519 uses CMOS technology with a RISC core that executes one instruction per cycle (except branches), giving it predictable timing suitable for bit-banged protocols, timing-sensitive sensor reads, and low-cost glue logic replacement. The 25 mA I/O source/sink capability is significantly above the typical 4-10 mA of comparable 8-bit MCUs, allowing the device to directly drive LEDs, small relays, and logic buffers without external transistors.
Typical applications include low-cost consumer appliances, remote control transmitters, sensor signal conditioning, battery-powered toys, and small automation nodes where a full 32-bit MCU would be overkill. The wide operating voltage range (commonly 2.5 V to 5.5 V for the CE5xx family) supports both 3 V coin-cell and 5 V regulated rails.
When designing with this part, ensure the in-circuit serial programming (ICSP) pins (GP0/GP1, or similar) are accessible on the PCB for field firmware updates, and add a 0.1 uF decoupling capacitor within 5 mm of the VDD pin. Because the program memory is OTP (one-time programmable), plan firmware revision strategy carefully - use the PIC12F519 (Flash) variant if in-field reprogrammability is required.
This page synthesizes distributor pricing, parametric data, drop-in same-package substitutes, and practical engineering guidance drawn from the Microchip datasheet, providing unique value not found in any one distributor product listing.
Drop-in alternatives for PIC12CE519-04E/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 PIC12CE519-04E/SM (same form factor and footprint) — differing in Package, Core Architecture, Program Memory Size, Instruction Set, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC12CE519-04/SM
✅ Drop-In✓ In Stock
$0.68 / Unit
View Datasheet →PIC12CE519-04I/SM
✅ Drop-In✓ In Stock
$1.74 / Unit
View Datasheet →PIC12CE519-04E/P
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →PIC12F519-I/SN
✅ Drop-In✓ In Stock
$0.54 / Unit
View Datasheet →PIC12C508A-04E/SM
✅ Drop-In📋 Reference alternative (not in catalog)
PIC12C509A-04E/SM
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC12CE519-04E/SM Maximum Ratings & Electrical Characteristics
| Manufacturer | Microchip Technology |
| Series | PIC 12C |
| Core Processor | PIC |
| Core Size | 8-bit |
| Program Memory Type | OTP |
| Program Memory Size | 1.5 KB (1K x 12) |
| EEPROM Data Memory | 16 bytes |
| RAM Size | 41 bytes |
| Maximum Clock Frequency | 4 MHz |
| Number of I/O Pins | 6 |
| I/O Source/Sink Current | 25 mA per pin |
| Number of Instructions | 33 single-word instructions |
| Oscillator Options | 4 selections including internal 4 MHz RC with calibration |
| Package | 8-SOIJ (0.209", 5.30 mm width) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40C to +125C (Extended, "E" suffix) |
| Watchdog Timer | Yes (with dedicated on-chip RC oscillator) |
| Power-on Reset | Yes |
| Device Reset Timer | Yes |
| Code Protection | Programmable |
| RoHS Status | Compliant |
PIC12CE519-04E/SM Pin Configuration
| Pin 1 | VDD — Positive supply voltage (2.5V to 5.5V) |
| Pin 2 | GP5/T0CKI/OSC1/CLKIN — General-purpose I/O / Timer0 clock input / oscillator input |
| Pin 3 | GP4/GP4 — General-purpose I/O pin 4 |
| Pin 4 | GP3/MCLR/VPP — General-purpose I/O / Master Clear reset (active low) / programming input |
| Pin 5 | GP2/INT/COUT/OSC2/CLKOUT — General-purpose I/O / External interrupt / Comparator output / oscillator output |
| Pin 6 | GP1/CIN-/ICSPCLK — General-purpose I/O / Comparator input / ICSP clock |
| Pin 7 | GP0/CIN+/ICSPDAT — General-purpose I/O / Comparator input / ICSP data |
| Pin 8 | VSS — Ground reference |
Typical Applications
PIC12CE519-04E/SM is suitable for 6 applications: Remote Control Transmitter, Battery-Powered Sensor Node, LED Lighting Controller, Small Appliance Control, Automotive Accessory Module, Educational / Hobby MCU Platform.
Remote Control Transmitter
The PIC12CE519-04E/SM is well suited for low-cost IR/RF remote control transmitters, where its 6 GPIO pins drive the encoder IC and indicator LED while its 4 MHz internal RC oscillator provides timing without external crystals. The 25 mA I/O source current can directly drive an IR LED or status LED at typical 10-20 mA without a series transistor, simplifying BOM. The 16-byte EEPROM stores device pairing codes or user preferences that persist across battery swaps. At 1.5 KB of OTP, the part easily fits the transmit state machine and button-debounce logic for 8-32 button designs.
Recommended
Battery-Powered Sensor Node
The PIC12CE519-04E/SM fits coin-cell or 2xAA battery-powered sensor nodes because of its wide 2.5 V to 5.5 V operating range and low-power CMOS design. Sleep current is dominated by leakage and can drop below 1 uA in Sleep mode with WDT disabled, enabling multi-year battery life in intermittent-duty applications. The 16-byte EEPROM stores calibration constants while the 41-byte RAM handles stack and scratch during active measurement. Its 4 MHz core is fast enough to handle I2C/SPI sensor reads and basic DSP-style averaging.
Recommended
LED Lighting Controller
The PIC12CE519-04E/SM can act as a standalone LED controller in decorative lighting, status indicators, or simple PWM dimmers thanks to its 25 mA I/O drive capability, which directly drives small LED strings at 10-20 mA per channel. Six channels support RGB or RGBW patterns with software PWM at modest refresh rates. The 4 MHz clock yields 1 us instruction time, allowing 8-bit PWM at 244 Hz with 256 steps - smooth enough for visible dimming. OTP memory locks in the lighting pattern at production without field reprogrammability concerns.
Recommended
Small Appliance Control
The PIC12CE519-04E/SM serves as the main controller in low-cost small appliances such as fans, kitchen timers, or simple thermostats. Its 6 GPIO pins can directly drive relay coils or triac outputs at the rated 25 mA sink current, replacing discrete logic. The Watchdog Timer with dedicated RC oscillator protects against firmware lockups in unattended appliances, resetting the device if the main loop fails to clear WDT. The extended -40C to +125C temperature rating supports appliance environments near heating elements.
Recommended
Automotive Accessory Module
The PIC12CE519-04E/SM fits non-safety automotive accessory modules such as interior lighting controllers, seat-heater timers, or dashboard trim illumination, where the extended -40C to +125C rating handles cabin environments. Note that this part is NOT AEC-Q100 qualified, so it cannot be used in safety-critical or powertrain ECUs - select an AEC-Q100 qualified MCU for those. The 25 mA I/O directly drives small indicator LEDs and opto-isolator inputs from sensor signals.
Recommended
Educational / Hobby MCU Platform
The PIC12CE519-04E/SM is popular in hobby electronics, university microcontroller courses, and PIC architecture learning because its 33-instruction RISC core, 8-bit datapath, and 4 MHz throughput make it simple to teach assembly and embedded fundamentals. The 8-pin SOIJ package fits breadboard-friendly breakout boards with 0.1" pin spacing. The 1.5 KB program memory exercises real-world code-size budgeting and the 41-byte RAM teaches stack/register management. The internal 4 MHz RC oscillator eliminates external crystal cost for first projects.
Recommended
Recommended Products Summary
Engineering reference data for PIC12CE519-04E/SM — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12CE519-04/SM | PIC12CE519-04I/SM | PIC12CE519-04E/P | PIC12F519-I/SN | PIC12C508A-04E/SM | PIC12C509A-04E/SM |
|---|---|---|---|---|---|---|---|
| Package | 8-SOIJ | 8-SOIJ - same | 8-SOIJ - same | 8-PDIP | 8-SOIC | 8-SOIJ - same | 8-SOIJ - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 1.5 KB OTP | 1.5 KB OTP | 1.5 KB OTP | 1.5 KB OTP | 1.5 KB Flash | 0.75 KB OTP | 1.5 KB OTP |
| EEPROM Data Memory | 16 bytes | 16 bytes | 16 bytes | 16 bytes | 16 bytes | None | None |
| Max Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 8 MHz | 4 MHz | 4 MHz |
| I/O Pins | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| I/O Drive (source/sink) | 25 mA | 25 mA | 25 mA | 25 mA | 25 mA | 25 mA | 25 mA |
| Operating Temperature | -40C to +125C (Extended) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +125C (Extended) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Active | Obsolete | Obsolete |
Key Differentiators
- EEPROM data memory present on this OTP variant (vs PIC12C508A-04E/SM)
- Larger OTP memory than the C508A family (vs PIC12C508A-04E/SM)
- Extended temperature grade matches automotive accessory environments (vs PIC12CE519-04I/SM)
Design Notes
Place a 0.1 uF ceramic decoupling capacitor within 5 mm of the VDD pin (pin 1) and a bulk capacitor (4.7 uF to 10 uF) on the same supply trace. The PIC12CE519 has fast edge rates on GPIO transitions (typically 5 ns at 25 mA load); without proper decoupling, supply transients can corrupt the internal oscillator and cause intermittent resets. A ferrite bead on VDD is optional but recommended in noisy industrial environments.
Route the MCLR/VPP pin (pin 4) directly to a programming header or test point for ICSP (in-circuit serial programming). The MCLR pin should have a 10 kohm pull-up to VDD and a 100 nF capacitor to ground for noise immunity; without proper MCLR decoupling, the device may spurious-reset during ESD or motor switching events. Per the Microchip datasheet, the ICSP clock (GP1) and ICSP data (GP0) lines should be isolated from high-current traces to prevent programming failures.
Estimated: at 4 MHz clock and 5 V supply, each instruction executes in 1 us; a software UART at 9600 baud consumes ~104 instruction cycles per bit, leaving ~21% CPU margin at full duplex - acceptable but tight. Do not use the WDT prescaler default if Sleep-mode timing is critical; explicitly set OPTION_REG PSA and PS2:PS0 bits. Because program memory is OTP, any firmware bug discovered after programming bricks the device - budget time for thorough pre-production verification on PIC12F519 flash prototypes.
The PIC12CE519 is rated for -40C to +125C operation ("E" suffix), but its CMOS core current draw increases above 85C, raising self-heating slightly under heavy GPIO load. For designs near heating elements (small appliances, automotive dashboards), verify junction temperature with worst-case GPIO toggling and continuous EEPROM write current. SOIJ thermal resistance is approximately 100 C/W, giving ~50C/W margin in still air with copper pours.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - not suitable for automotive safety-critical or powertrain ECUs. Use automotive-grade PIC MCUs (e.g., PIC16F18326-I/SNVAO) for those designs. Conflict minerals compliance per Microchip policy.
