PIC12CE519-04I/SN - 8-Bit OTP MCU, 1.5KB, 4MHz | Microchip
MPN: PIC12CE519-04I/SN ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.99 | $2.99 |
| 10 | $2.75 | $27.50 |
| 100 | $2.32 | $232.00 |
| 500 | $1.95 | $975.00 |
| 1,000 | $1.62 | $1,620.00 |
PIC12CE519-04I/SN Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and programmable I/O peripherals. The PIC12CE519 sits at the entry-level of the 8-bit MCU hierarchy - below Flash-based PIC12F and PIC16 families - and is intended for high-volume cost-sensitive applications where one-time programmable code is acceptable. Within the power-management hierarchy it is essentially the controller that drives timing, sequencing, and discrete logic functions on a board.
Key features include four selectable oscillator options (including an internal 4 MHz RC oscillator with programmable calibration, eliminating the external crystal in many designs), a Watchdog Timer with its own on-chip RC oscillator for reliable operation, Power-On Reset (POR), Device Reset Timer (DRT), code protection, and 1,000,000 erase/write cycle EEPROM endurance on the data side. The Harvard RISC core offers 33 single-word instructions, deterministic interrupt latency, and an 8-bit real-time counter (TMR0) with 8-bit programmable prescaler.
Typical applications span simple appliance timers, button-driven LED controllers, single-sensor data loggers, relay sequencers, push-button debouncing, and small-appliance logic replacement of discrete glue logic. The combination of 6 high-current I/Os, on-chip EEPROM for user data, and 35 single-word instructions makes the PIC12CE519 efficient in space-constrained 8-pin designs.
When designing with the PIC12CE519, choose between the internal 4 MHz RC oscillator and an external crystal based on timing accuracy requirements - the internal RC drifts more with voltage and temperature but saves two pins and an external resonator. In-system programming is via Microchip's ICSP protocol through the GP0/GP1 pins, so these must remain accessible in the PCB layout.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone Microchip datasheet - giving engineers a single authoritative reference for sourcing, designing in, and replacing the PIC12CE519-04I/SN.
Drop-in alternatives for PIC12CE519-04I/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 PIC12CE519-04I/SN (same form factor and footprint) — differing in Package, Operating Temperature, Timers, Program Memory Size, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC12F519-I/SN
✅ Drop-In✓ In Stock
$0.54 / Unit
View Datasheet →PIC12CE519-04/SN
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC12CE519-04E/SN
✅ Drop-In✓ In Stock
$1.67 / Unit
View Datasheet →PIC12C508A-04I/SM
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC10F200-I/P
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.28 / Unit
View Datasheet →PIC12C509A-04I/SN
✅ Drop-In✓ In Stock
$0.92 / Unit
View Datasheet →PIC12CE519-04I/SN Maximum Ratings & Electrical Characteristics
| Manufacturer | Microchip Technology |
| Series | PIC 12C |
| Core Processor | PIC |
| Core Size | 8-Bit |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 1.5 KB (1K x 12) |
| RAM Size | 41 bytes |
| EEPROM Size | 16 bytes |
| Number of I/O | 6 |
| Maximum CPU Frequency | 4 MHz |
| Instruction Execution Time | 200 ns (single cycle) |
| Oscillator Options | Internal 4 MHz RC, external RC, crystal, resonator (4 selections) |
| I/O Source/Sink Current | 25 mA per pin |
| Supply Voltage | 2.5 V to 5.5 V (typical 3.3 V / 5 V) |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 8-SOIC (SN), 0.154 inch / 3.90 mm body width |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| MSL Level | 1 (per JEDEC J-STD-020, unlimited floor life) |
| AEC-Q100 Automotive Qualification | Not qualified (industrial grade) |
| Programming Method | ICSP via GP0/GP1 |
PIC12CE519-04I/SN Pin Configuration
| Pin 1 | GP5/OSC1/CLKIN — Bidirectional I/O pin / oscillator crystal input / external clock input |
| Pin 2 | GP4/OSC2 — Bidirectional I/O pin / oscillator crystal output |
| Pin 3 | GP3/MCLR/VPP — Input pin / Master Clear reset (active low) / programming voltage input |
| Pin 4 | VSS — Ground reference |
| Pin 5 | GP0 — Bidirectional I/O pin / ICSP data (DAT) |
| Pin 6 | GP1 — Bidirectional I/O pin / ICSP clock (CLK) |
| Pin 7 | GP2 — Bidirectional I/O pin / TOCKI (timer0 clock input) |
| Pin 8 | VDD — Positive supply voltage (2.5 V to 5.5 V) |
Typical Applications
PIC12CE519-04I/SN is suitable for 6 applications: Simple Appliance Timer, Button-Driven LED Controller, Single-Sensor Data Logger, Relay Sequencer / Glue Logic Replacement, Push-Button Debounce / User Interface, Discrete Logic Replacement (Space-Constrained Designs).
Simple Appliance Timer
The PIC12CE519-04I/SN suits simple appliance timer designs such as kitchen-fan run-on timers, bathroom exhaust delays, and irrigation controllers because its 1.5 KB OTP program memory fits state-machine firmware while the 4 MHz core delivers 200 ns instruction cycles for accurate timing. The 6 GPIO pins at 25 mA each directly drive triacs or relays without extra buffer transistors. The 16-byte EEPROM stores user-set times across power cycles, and the internal 4 MHz RC oscillator eliminates the external crystal, reducing BOM cost. For -40C to +85C appliances like outdoor lighting controllers, the industrial -04I temperature grade is a direct fit without additional derating.
Recommended
Button-Driven LED Controller
For push-button LED dimmers, multi-mode flashers, and decorative lighting sequencers, the PIC12CE519-04I/SN delivers precisely the right resource mix: 6 GPIO pins each capable of 25 mA source/sink can directly drive low-current LED strings or interface to MOSFET gates for higher power. The 33 single-word PIC instructions and 4 MHz execution make PWM fade algorithms trivial. Internal 4 MHz RC oscillator eliminates external timing components, and the 16-byte EEPROM retains user brightness or mode preferences across power cycles. The industrial -40C to +85C grade handles outdoor or automotive interior lighting without thermal derating.
Recommended
Single-Sensor Data Logger
The PIC12CE519-04I/SN can act as the controller in a single-sensor data logger by periodically sampling a digital sensor and writing samples to an external EEPROM over I2C-bit-banged on two GPIO pins. Its 41-byte RAM buffers a few samples before write, and the 16-byte on-chip EEPROM stores small config records (calibration constants, log interval). The internal 4 MHz RC oscillator plus TMR0 with 8-bit prescaler generates wake intervals from the Watchdog Timer. Industrial -40C to +85C operation covers cold-chain, HVAC, and outdoor environmental monitoring use cases where a full PIC16F or PIC18F would be overkill.
Recommended
Relay Sequencer / Glue Logic Replacement
Replacing 555-timer plus discrete-logic relay sequencers, the PIC12CE519-04I/SN integrates the entire control function: 6 high-current 25 mA GPIO pins drive small relays or opto-isolators directly, and the 4 MHz core sequences up to 6 outputs with 200 ns precision. OTP programming keeps unit cost minimal for production volumes above ~10k units. Industrial temperature range ensures reliability in industrial cabinets. The ICSP programming interface uses GP0/GP1 - keep those pins accessible in the PCB layout for factory programming.
Recommended
Push-Button Debounce / User Interface
The PIC12CE519-04I/SN is well-suited to replace dedicated debounce ICs in multi-button user interfaces such as appliance front panels and consumer gadgets. Each button is read on one GPIO pin; the 200 ns instruction cycle debounces in firmware with a single counter. The 6 GPIO support up to 6 buttons directly, and additional LEDs can be driven at 25 mA for backlighting. The internal RC oscillator eliminates external timing parts, and the 16-byte EEPROM stores last-state preferences (mode, brightness) across power loss. Industrial temperature grade suits consumer white goods and HVAC controls.
Recommended
Discrete Logic Replacement (Space-Constrained Designs)
Where a small 8-SOIC footprint previously required discrete 74HC logic gates or a 555 timer, the PIC12CE519-04I/SN integrates the entire glue-logic function at lower BOM cost and higher design flexibility. A 6-pin PIC12CE519 replaces combinatorial logic, monostables, and oscillators with a single IC and 1.5 KB of OTP firmware. The 33-instruction RISC core and 4 MHz execution let you implement state machines that would require dozens of discrete gates. OTP programming and internal RC oscillator keep external parts count near zero.
Recommended
Recommended Products Summary
Engineering reference data for PIC12CE519-04I/SN — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12F519-I/SN | PIC12CE519-04/SN | PIC12CE519-04E/SN | PIC12C508A-04I/SM | PIC10F200-I/P | PIC12C509A-04I/SN |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 8-SOIC (SN) | 8-SOIC (SN) - same | 8-SOIC (SN) - same | 8-SOIC (SN) - same | 8-SOIC (SM) - same | 8-SOIC family - same footprint | 8-SOIC (SN) - same |
| Program Memory Type | OTP, 1.5 KB | Flash, 1.5 KB | OTP, 1.5 KB | OTP, 1.5 KB | OTP, 0.75 KB (-50%) | Flash, 0.25 KB (-83%) | OTP, 0.75 KB (-50%) |
| RAM | 41 bytes | 41 bytes | 41 bytes | 41 bytes | 25 bytes (-39%) | 16 bytes (-61%) | 41 bytes |
| EEPROM | 16 bytes | 16 bytes | 16 bytes | 16 bytes | None | None | None |
| Number of I/O | 6 | 6 | 6 | 6 | 6 | 4 (-33%) | 6 |
| Maximum Clock | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | 0C to +70C (Commercial) | -40C to +125C (Extended) | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Integrated 16-byte EEPROM for non-volatile user data (vs PIC12C508A-04I/SM)
- Higher 1.5 KB program memory versus smaller PIC12 siblings (vs PIC12C509A-04I/SN)
- OTP cost optimization versus Flash reprogrammability (vs PIC12F519-I/SN)
Design Notes
Decouple VDD (pin 8) with a 0.1 uF ceramic capacitor placed within 5 mm of the pin and a 10 uF bulk capacitor at the board entry. The PIC12CE519-04I/SN draws only a few mA typical, so a small MCP1700 LDO or even a series diode + bulk cap regulator is adequate for low-cost designs. Enable the internal Power-On Reset (POR) and Brown-Out Reset configuration bits so the part restarts cleanly on power-up and on brown-out events below the BOR threshold.
Keep the ICSP pins GP0 and GP1 (pins 5 and 6) accessible on the PCB for in-circuit programming during development and factory programming of OTP units. Add a 2x3 or 1x6 header footprint even if not populated in production, since OTP devices cannot be reprogrammed in the field. Keep GP5/OSC1 (pin 1) and GP4/OSC2 (pin 2) short and close to the crystal or resonator if using an external oscillator - trace length under 5 mm each minimizes parasitic capacitance that shifts frequency.
Do not exceed the 25 mA per-pin source/sink rating when driving LEDs or relays directly; for higher currents use a MOSFET like BSS138 or a dedicated driver. Avoid using GP3 as a normal GPIO unless MCLR is disabled in the configuration bits - GP3 is the only input-only pin and serves as MCLR by default. For OTP programming, ensure your code is fully validated on a Flash equivalent (PIC12F519-I/SN) before committing to OTP units, since OTP cannot be reprogrammed.
Compliance Information
RoHS compliant and lead-free finish per Microchip product page. Industrial -40C to +85C temperature grade; not AEC-Q100 qualified - choose AEC-Q100-qualified Microchip parts (e.g. PIC12F1840-I/SN) for automotive applications. Halogen-free status not explicitly stated in provided data.
