PIC12F519T-I/MC - 8-Bit Flash MCU, 1.5KB, 8MHz, DFN-8 | Microchip
MPN: PIC12F519T-I/MC ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.14 | $1.14 |
| 10 | $1.03 | $10.30 |
| 100 | $0.91 | $91.00 |
| 500 | $0.82 | $410.00 |
| 1,000 | $0.74 | $740.00 |
PIC12F519T-I/MC Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data RAM, peripherals, and I/O on one die. The PIC12 baseline family occupies the cost-and-pincount-optimized tier of the MCU hierarchy: 8-bit CPU -> PIC10/12 baseline -> Flash MCU -> microcontroller -> embedded computing -> semiconductor. The 12-bit-wide instruction word and 8-bit data path keep the core small, low power, and inexpensive - ideal for high-volume cost-sensitive applications.
The PIC12F519T-I/MC operates from 2.0 V to 5.5 V across the industrial -40 C to +85 C range. Key features include a precision 4/8 MHz internal oscillator, an 8-bit Timer0 with 8-bit prescaler, a Watchdog Timer with on-chip RC oscillator for failsafe operation, an In-Circuit Serial Programming (ICSP) interface, and 100 nA typical sleep current for battery-backed designs. The internal oscillator eliminates two external crystals versus competing MCU families, reducing BOM cost and PCB area.
Typical applications for the PIC12F519T-I/MC include low-cost remote controls, PIR motion-sensor signal conditioning, fan/light controllers, battery-powered sensor nodes, RGB LED color-mixing drivers, and small appliance user-interface boards. The combination of 1.5 KB Flash and six high-current I/O makes it well matched to compact state-machine designs where a 32-bit Cortex-M0 would be over-spec and over-priced.
When designing with this part, leave the ICSP pins free for in-circuit programming or fit a 2x3 header. A 100 nF decoupling capacitor within 5 mm of VDD and a 10 kohm pull-up on MCLR are recommended. Bulk capacitance on VDD is usually unnecessary because the core draws microamps in sleep.
Drop-in alternatives for PIC12F519T-I/MC — 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 PIC12F519T-I/MC (same form factor and footprint) — differing in Package, Timers, Internal Oscillator, Operating Temperature, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC12F519-I/MC
✅ Drop-In✓ In Stock
$0.68 / Unit
View Datasheet →PIC12F519T-I/MCVAO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC12F519-E/MC
✅ Drop-In✓ In Stock
$0.64 / Unit
View Datasheet →PIC12F510T-I/MC
✅ Drop-In✓ In Stock
$1 / Unit
View Datasheet →PIC12F509T-I/MC
✅ Drop-In✓ In Stock
$0.28 / Unit
View Datasheet →PIC12F519T-I/MC Maximum Ratings & Electrical Characteristics
| Product Type | 8-bit Flash Microcontroller |
| CPU Core | PIC12 (RISC, 33 single-word instructions) |
| Program Memory (Flash) | 1.5 KB (1K x 12 words) |
| Data RAM | 41 bytes |
| Data EEPROM (Flash) | 64 bytes (non-volatile) |
| Maximum CPU Clock | 8 MHz (4 MHz internal oscillator) |
| Instruction Width | 12 bits |
| Data Path Width | 8 bits |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| I/O Pins | 6 |
| I/O Source/Sink Current | 25 mA per pin |
| Timers | One 8-bit Timer0 with 8-bit prescaler |
| Watchdog Timer | Yes, with dedicated on-chip RC oscillator |
| Internal Oscillator | 4 MHz (precision), software-selectable 8 MHz |
| Sleep Current (typical) | 100 nA |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
| Operating Temperature | -40 C to +85 C (industrial, "I" grade) |
| Package | 8-pin DFN (2x3 mm) with exposed pad |
| Mounting Type | Surface Mount |
| MSL Level | 1 |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC12F519T-I/MC Pin Configuration
| Pin 1 | GP5/OSC1/CLKIN — General-purpose I/O / crystal oscillator input / external clock input |
| Pin 2 | GP4/OSC2/CLKOUT — General-purpose I/O / crystal oscillator output / clock output |
| Pin 3 | GP3/MCLR/VPP — General-purpose I/O / Master Clear reset (active low) / programming voltage |
| Pin 4 | VDD — Positive supply voltage (2.0 V to 5.5 V) |
| Pin 5 | VSS — Ground reference |
| Pin 6 | GP0/ICSPDAT/AN0 — GPIO / ICSP data / analog input 0 (on PIC12F519 these are digital-only) |
| Pin 7 | GP1/ICSPCLK/AN1 — GPIO / ICSP clock / analog input 1 |
| Pin 8 | GP2/AN2/T0CKI/INT/COUT — GPIO / analog input 2 / Timer0 clock input / external interrupt / comparator output |
Typical Applications
PIC12F519T-I/MC is suitable for 6 applications: PIR Motion-Sensor Signal Conditioning, Infrared Remote Control Transmitter, RGB LED Color-Mixing Driver, Battery-Powered Wireless Sensor Node, Fan / Light Wall Switch Controller, Small Appliance User Interface Board.
PIR Motion-Sensor Signal Conditioning
The PIC12F519T-I/MC fits PIR motion-sensor signal conditioning because it offers 6 GPIO pins rated at 25 mA source/sink for directly driving a relay or triac without buffer transistors. Its 8-bit Timer0 with 8-bit prescaler generates the precise retriggerable one-shot window needed to debounce the analog comparator output of a PIR front-end, while 1.5 KB Flash accommodates the state machine that distinguishes motion events from thermal drift. The 100 nA sleep current means a battery-powered PIR occupancy sensor can run for 5+ years on two AA cells. The 2.0 V to 5.5 V VDD range accepts either battery or rectified 5 V mains supply without level shifting. The precision 4/8 MHz internal oscillator eliminates the external RC network, saving two components versus competing MCU families in this cost-sensitive security segment.
Recommended
Infrared Remote Control Transmitter
The PIC12F519T-I/MC is an excellent fit for low-cost infrared remote control transmitters because its 6 GPIO pins drive the IR LED directly through a single BJT, the internal 4/8 MHz oscillator provides the 38 kHz carrier accuracy required by NEC/RC5 protocols, and 1.5 KB Flash holds the complete protocol stack plus button-scanning matrix. Sleep current of 100 nA means a coin-cell powered remote sits in deep sleep for years between button presses. The 8-pin DFN-8 (2x3 mm) package is smaller than competing 14-pin SOIC remotes, enabling ultra-thin remote enclosures. Industrial -40 C to +85 C temperature grade tolerates the warm environment above a sofa cushion. The ICSP interface allows in-circuit programming after PCB assembly, eliminating pre-programming inventory cost.
Recommended
RGB LED Color-Mixing Driver
The PIC12F519T-I/MC drives RGB LED color-mixing applications where cost is paramount. With 6 GPIO pins sourcing 25 mA each, the MCU can directly drive three LED strings (red, green, blue) without MOSFET drivers in low-power strips under 25 mA per channel. The 8-bit Timer0 with 8-bit prescaler generates the software PWM waveforms for color mixing at 8-bit resolution per channel. The 2.0 V to 5.5 V supply range supports both 3.3 V and 5 V LED strips directly. The 100 nA sleep current allows battery-powered decorative lighting to retain the last color setting for years on standby. The DFN-8 package is small enough to fit inside a standard MR16 spotlight base alongside the LED, eliminating external controller boxes in retrofit designs.
Recommended
Battery-Powered Wireless Sensor Node
The PIC12F519T-I/MC suits battery-powered wireless sensor nodes because its 100 nA sleep current extends battery life to multi-year levels on two AA cells. The 6 GPIO pins interface with sensors, a low-power ISM-band transmitter, and a status LED, while the on-chip 4/8 MHz internal oscillator eliminates two external crystals versus competing MCU families. The 64-byte non-volatile Flash data EEPROM stores calibration constants and node ID without external memory. The industrial -40 C to +85 C temperature range suits outdoor wireless sensors in weather stations or agricultural monitoring. The DFN-8 (2x3 mm) package fits inside the sensor housing alongside the battery, simplifying mechanical design versus larger 8-pin SOIC alternatives.
Recommended
Fan / Light Wall Switch Controller
The PIC12F519T-I/MC is well matched to fan/light wall switch controllers where the 6 GPIO pins directly drive a triac opto-coupler, sense zero-cross for phase-angle dimming, and read the user button input. The 25 mA source/sink I/O eliminates driver transistors on the triac gate. The 2.0 V to 5.5 V supply range operates directly from a capacitive dropper supply derived from mains. The 1.5 KB Flash stores debounce, zero-cross timing, and scene memory algorithms. The -40 C to +85 C industrial temperature grade handles the enclosed switch box environment. The internal 4/8 MHz oscillator gives precise timing for zero-cross detection and triac firing, replacing an external crystal and reducing BOM cost in this highly competitive consumer segment.
Recommended
Small Appliance User Interface Board
The PIC12F519T-I/MC is an ideal fit for small-appliance user-interface boards such as coffee makers, kettles, toaster ovens, and slow cookers. Six GPIO pins scan a 3x3 button matrix plus drive a buzzer and a status LED. The 25 mA I/O source/sink current drives the piezo buzzer directly without external transistors. The Watchdog Timer with dedicated on-chip RC oscillator protects the appliance against firmware lock-up, a regulatory requirement for many white-goods safety standards. The 64-byte Flash data EEPROM retains user settings (toast darkness, brew strength) across power cycles. The 8-pin DFN-8 package sits on the small UI PCB inside the appliance housing, and ICSP programming allows firmware updates after final assembly.
Recommended
Recommended Products Summary
Engineering reference data for PIC12F519T-I/MC — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12F519-I/MC | PIC12F519-E/MC | PIC12F510T-I/MC | PIC12F509T-I/MC |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | DFN-8 (2x3 mm) | DFN-8 (2x3 mm) - same | DFN-8 (2x3 mm) - same | DFN-8 (2x3 mm) - same | DFN-8 (2x3 mm) - same |
| CPU Core | PIC12 baseline (12-bit) | PIC12 baseline (12-bit) | PIC12 baseline (12-bit) | PIC12 mid-range (14-bit) | PIC12 baseline (12-bit) |
| Program Memory (Flash) | 1.5 KB (1K x 12) | 1.5 KB | 1.5 KB | 1.5 KB | 1.5 KB |
| Data EEPROM (Flash) | 64 bytes | 64 bytes | 64 bytes | 64 bytes (Flash) | None |
| Maximum CPU Clock | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| 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 |
| Operating Temperature | -40 C to +85 C (industrial) | -40 C to +85 C | -40 C to +125 C (extended) | -40 C to +85 C | -40 C to +85 C |
| Packaging | Tape & Reel | Tray | Tube / Tray | Tape & Reel | Tape & Reel |
Key Differentiators
- Includes 64 bytes of non-volatile Flash data EEPROM (vs PIC12F509T-I/MC)
- Lowest-cost 8-bit MCU with 25 mA high-current I/O (vs PIC12F1501T-I/MS)
- Industrial-grade -40 C to +85 C in DFN-8 footprint (vs PIC12F519-E/MC)
Design Notes
Place a 100 nF decoupling capacitor within 5 mm of the VDD pin and connect it directly to the VSS ground plane. For battery-powered designs, the PIC12F519T-I/MC's 100 nA sleep current allows multi-year operation on two AA cells; however, ensure no pull-up resistors on unused GPIO pins leak current during sleep - configure all unused I/O as outputs driving low. The internal 4/8 MHz oscillator eliminates two external crystal capacitors but the MCU's start-up time of about 1 ms from sleep means wake events should be tolerant of this latency.
The DFN-8 package has an exposed thermal pad on the bottom that MUST be soldered to the PCB ground plane for thermal dissipation, mechanical reliability, and electrical performance. Use an array of thermal vias (typically 4-9 vias, 0.3 mm drill) under the pad to conduct heat to inner ground planes. Keep the ICSP signals (ICSPCLK on GP1 and ICSPDAT on GP0) routed with short traces to a 2x3 or 1x6 programming header placed at the board edge for in-circuit programming access without disassembly.
The MCLR pin (GP3/MCLR/VPP) requires a 10 kohm pull-up resistor to VDD for normal operation; if left floating, the device will randomly reset. When using ICSP, ensure the programming header does not have series resistors on ICSPCLK/ICSPDAT - these signals must connect directly to GP1 and GP0. Configuration word settings (oscillator selection, WDT enable, code protection) are NOT erased by ICSP bulk erase if code-protect is set; program the configuration word LAST during development to avoid bricking the device. Note that GP3 is input-only on PIC12 baseline parts - do not configure it as output.
Compliance Information
RoHS compliant per Microchip product page. Lead-free DFN-8 package. Not AEC-Q100 qualified - choose PIC12F519-E/MC extended temperature grade for high-temperature designs, or PIC16F or PIC18 families for AEC-Q100 automotive.
