PIC12F519-E/SN - 8-bit Flash MCU 1.5KB 8MHz SOIC-8 | Microchip
MPN: PIC12F519-E/SN ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.85 | $0.85 |
| 10 | $0.76 | $7.60 |
| 100 | $0.62 | $62.00 |
| 500 | $0.52 | $260.00 |
| 1,000 | $0.44 | $440.00 |
| 3,000 | $0.38 | $1,140.00 |
PIC12F519-E/SN Overview
A PIC microcontroller is a RISC-based, Harvard-architecture 8-bit or 16-bit microprocessor core, a microcontroller category that sits within the broader semiconductor hierarchy of embedded controllers -> microcontrollers -> microprocessors -> integrated circuits. The PIC12F519 belongs to the PIC12 baseline/mid-range family, the smallest-footprint 8-bit Flash sub-family of Microchip's PIC portfolio, optimized for low-cost, pin-constrained applications where a handful of I/O lines, an internal oscillator, and nanoWatt sleep modes are sufficient.
Key features include an internal 4 MHz or 8 MHz RC oscillator (no external crystal required for most designs), six general-purpose I/O pins, an 8-bit timer/counter (TMR0) with programmable prescaler, a watchdog timer with its own on-chip RC oscillator for reliable operation, and a wide operating voltage range of 2.0 V to 5.5 V. The device draws typical sleep currents under 1 µA at 2 V thanks to nanoWatt technology, and the E temperature grade extends the operating range from -40 °C to +125 °C for industrial environments.
The PIC12F519 uses a Harvard architecture with separate program and data buses, an 8-bit ALU, and a 12-bit instruction word. The Flash program memory is in-system programmable through ICSP, allowing firmware updates in the field. A 64-byte data EEPROM area is emulated in Flash with self-programming support, plus the device integrates a high-endurance Flash write capability and on-chip brown-out reset and power-on reset for robust startup. The PIC12F519T tape-and-reel variants share the same silicon and pinout as the -E/SN.
Typical applications include low-cost consumer appliances, LED lighting controllers, battery-powered sensor nodes, simple motor/relay controllers, IR remote transmitters, and replacement of discrete logic in space-constrained designs. The small 8-pin SOIC footprint, six I/O lines, and internal oscillator make the PIC12F519 a frequent choice where board area and BOM cost dominate.
When designing with this device, ensure decoupling capacitors are placed close to VDD/VSS, and reserve GP3 for input-only use (it lacks an output driver). The E grade variant supports industrial temperature range; choose the I grade for commercial-only 0-85 °C, or PIC12F519T tape-and-reel variants for high-volume pick-and-place assembly.
Drop-in alternatives for PIC12F519-E/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 PIC12F519-E/SN (same form factor and footprint) — differing in Package, Timers, MSL Level, ADC, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC12F510-I/SN
✅ Drop-In✓ In Stock
$0.62 / Unit
View Datasheet →PIC12F510-E/SN
✅ Drop-In✓ In Stock
$0.48 / Unit
View Datasheet →PIC12F519-E/SN Maximum Ratings & Electrical Characteristics
| Architecture | PIC12 baseline, 8-bit RISC Harvard |
| Core | 8-bit CMOS |
| Program Memory Type | Flash |
| Program Memory Size | 1.5 KB (1K x 12 words) |
| RAM Size | 64 bytes |
| Data EEPROM | 64 bytes (Flash-emulated) |
| Maximum CPU Speed | 8 MHz |
| Internal Oscillator | 4 MHz / 8 MHz selectable RC |
| Supply Voltage Range | 2.0 V to 5.5 V |
| I/O Pins | 6 (GP0-GP5, GP3 input-only) |
| Timers | 1 x 8-bit (TMR0 with prescaler) |
| Watchdog Timer | Yes, with dedicated RC oscillator |
| Brown-out Reset | Yes |
| Power-on Reset | Yes |
| Instruction Set | 33 single-word/single-cycle instructions |
| In-Circuit Serial Programming (ICSP) | Yes |
| Operating Temperature Range | -40 °C to +125 °C (E grade) |
| Package | 8-pin SOIC (SN, 0.154" / 3.90 mm width) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| MSL Level | 1 |
PIC12F519-E/SN Pin Configuration
| Pin 1 | GP3/MCLR/VPP — GPIO input-only / Master Clear reset / ICSP programming voltage |
| Pin 2 | GP0/AN0/CIN+/ICSPDAT — GPIO / analog comparator input / ICSP data |
| Pin 3 | GP1/AN1/CIN-/ICSPCLK — GPIO / analog comparator input / ICSP clock |
| Pin 4 | GP2/AN2/COUT/T0CKI/INT — GPIO / analog comparator output / Timer0 clock / external interrupt |
| Pin 5 | GP4/AN3 — GPIO with weak pull-up / analog comparator reference |
| Pin 6 | GP5 — GPIO with weak pull-up |
| Pin 7 | VSS — Ground reference |
| Pin 8 | VDD — Positive supply voltage 2.0-5.5 V |
Typical Applications
PIC12F519-E/SN is suitable for 6 applications: Low-Cost Consumer Appliance Controller, Battery-Powered Wireless Sensor Node, LED Lighting Effect Controller, IR Remote Control Transmitter, Industrial Control Logic Replacement, Automotive Interior Accessory Module.
Low-Cost Consumer Appliance Controller
The PIC12F519-E/SN's 1.5 KB Flash, 64-byte RAM, six I/O lines, and integrated 4/8 MHz oscillator make it a strong fit for low-cost consumer appliance control such as electric toothbrushes, small fans, and kitchen timers. With its 2.0-5.5 V supply range it can run directly from two alkaline cells or a 3.3 V regulator, while the E-grade -40 to +125 °C operating range covers under-cabinet and garage environments. Place decoupling caps close to VDD/VSS and use GP3 as a wake-up button input to minimize sleep current below 1 µA in standby.
Recommended
Battery-Powered Wireless Sensor Node
The PIC12F519-E/SN's nanoWatt sleep mode, drawing typically less than 1 µA at 2 V, makes it well suited for battery-powered wireless sensor nodes where coin-cell life dictates product success. The 8 MHz instruction rate handles periodic sensor reads, ADC sampling via comparator input, and packet framing before returning to sleep. Pair with an SPI-driven sub-GHz transmitter on GP0/GP1/GP2, route the wake-up interrupt to GP3, and use the watchdog timer to time sleep intervals without an external RTC.
Recommended
LED Lighting Effect Controller
The PIC12F519-E/SN drives small LED strings with software PWM on GP0, GP1, GP2, GP4, and GP5, while GP3 reads a tactile button for mode selection. Its 1.5 KB Flash comfortably holds multi-mode fade tables for RGB strips or single-channel dimming sequences, and 64 bytes of RAM is sufficient for state-machine variables. The 8 MHz instruction rate provides 8-bit PWM resolution at refresh rates above 60 Hz, eliminating visible flicker, and the 2.0-5.5 V supply range covers 5 V USB-powered or 3-cell battery installations.
Recommended
IR Remote Control Transmitter
The PIC12F519-E/SN is a cost-effective IR remote transmitter, using GP2 to modulate a 38 kHz carrier via Timer0 interrupt while GP0/GP1 scan a 3x4 keypad matrix through GP3 wake-up. Its 1.5 KB Flash stores several dozen RC-5/RC-6 or NEC-protocol command frames, and the 2.0-5.5 V supply accepts 2-cell or 3-cell alkaline operation. E-grade -40 to +125 °C range tolerates automotive cabin and outdoor remote environments without reliability concerns.
Recommended
Industrial Control Logic Replacement
In industrial control cabinets the PIC12F519-E/SN replaces legacy 74HC/4000-series discrete logic with a programmable 8-bit controller at lower BOM cost and smaller PCB area. Six I/O lines implement interlocks, timers, and signal conditioning, while the internal oscillator eliminates two external crystal components. The E-grade -40 to +125 °C range supports unconditioned cabinet installation, brown-out reset prevents corruption on noisy 24 V DC bus transients, and 1.5 KB Flash handles IEC 61131-3-style ladder logic equivalents via state machine code.
Recommended
Automotive Interior Accessory Module
The PIC12F519-E/SN's E-grade -40 to +125 °C operating range, 2.0-5.5 V supply, and 8-pin SOIC footprint suit small automotive interior accessories such as ambient LED controllers, USB charger status indicators, and seat sensor interfaces. Brown-out reset handles crank-start voltage drops on the 12 V battery bus when paired with an external LDO. Use GP0/GP1 for status LEDs, GP2 for a FET-driven output, GP3 for wake-up, and GP4/GP5 for LIN-bus bit-banging or switch scanning.
Recommended
Recommended Products Summary
Engineering reference data for PIC12F519-E/SN — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12F519-E/P | PIC12F519-E/MS | PIC12F519-E/MC | PIC12F510-I/SN | PIC12F510-E/SN | PIC12F509-E/MS |
|---|---|---|---|---|---|---|---|
| Package | SOIC-8 (SN) | PDIP-8 (P) | MSOP-8 (MS) | DFN-8 (MC) | SOIC-8 (SN) - same | SOIC-8 (SN) - same | MSOP-8 (MS) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 1.5 KB Flash | 1.5 KB Flash | 1.5 KB Flash | 1.5 KB Flash | 1.5 KB Flash | 1.5 KB Flash | 1.5 KB Flash |
| RAM Size | 64 bytes | 64 bytes | 64 bytes | 64 bytes | 64 bytes | 64 bytes | 41 bytes |
| CPU Speed | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| Temperature Grade | E (-40 to +125 °C) | E (-40 to +125 °C) | E (-40 to +125 °C) | E (-40 to +125 °C) | I (0 to +85 °C) | E (-40 to +125 °C) | E (-40 to +125 °C) |
| Supply Voltage | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| I/O Pins | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Watchdog Timer | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Approx Unit Price | $0.85 (qty 1) | $0.92 (qty 1) | $0.88 (qty 1) | $0.90 (qty 1) | $0.78 (qty 1) | $0.82 (qty 1) | $0.72 (qty 1) |
Key Differentiators
- Industrial E-grade temperature range on SOIC-8 (vs PIC12F510-I/SN)
- 64-byte RAM for state-machine applications (vs PIC12F509-E/MS)
- Drop-in SOIC-8 sibling for commercial designs (vs PIC12F510-E/SN)
Design Notes
Place a 100 nF decoupling capacitor within 3 mm of VDD (pin 8) and a bulk 1-10 µF capacitor adjacent to it, with both traces kept short and the ground return directly to VSS (pin 7). The PIC12F519's nanoWatt sleep mode draws typically under 1 µA at 2 V, but switching noise on VDD can cause spurious wake-ups; a ferrite bead in series with VDD may be added in noisy industrial environments. Brown-out reset should be enabled in CONFIG to prevent Flash corruption on voltage sag.
GP3 is input-only and shares its pin with the MCLR reset function; do not use it as a digital output driver, and route it to either a tactile button to ground or a 10 kΩ pull-up to VDD. Configuring the MCLR function in CONFIG1 disables the internal weak pull-up on GP3, so an external pull-up is mandatory when using the pin as a digital input. Failing to observe this constraint is the most common PIC12F519 design error and prevents the part from running code.
The SOIC-8 (SN) package's 0.154 inch (3.90 mm) body width fits standard SOIC-8 land patterns compatible with JEDEC MS-012. For hand-soldering prototypes use a fine-tipped iron and 0.4 mm lead-free solder; for production a reflow profile with peak 245 °C (lead-free SAC305) for 30 seconds is recommended. Keep clock trace from the internal oscillator away from switching power nodes to minimize EMI-induced instruction jitter.
Compliance Information
RoHS and REACH compliant per Microchip product page DS30009920. Not AEC-Q100 qualified - this is an industrial-grade part. Lead-free and halogen-free per Microchip material declaration. E-grade temperature supports -40 to +125 °C industrial environments.
