PIC12F519-I/P - 8MHz 8-bit Flash MCU, 1.5KB | Microchip
MPN: PIC12F519-I/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.68 | $1.68 |
| 10 | $1.49 | $14.90 |
| 100 | $1.32 | $132.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $1.05 | $1,050.00 |
PIC12F519-I/P Overview
An 8-bit microcontroller (MCU) is a small, self-contained computer-on-a-chip that combines a CPU, program memory, data memory, and configurable I/O peripherals in a single IC. The PIC12F519 belongs to the PIC12 family of microcontrollers, itself part of the broader Microchip PIC microcontroller hierarchy (8-bit PIC -> PIC10/12/16/18 family -> Microcontroller -> Embedded IC -> Semiconductor). These MCUs are widely used as glue logic, sensor conditioners, and standalone control processors in cost-sensitive designs.
Key differentiating features include an internal 8 MHz oscillator (no external crystal required), 6 general-purpose I/O pins with individual direction control, a watchdog timer, power-on reset, brown-out detect, and an 8-bit timer/counter with a 3-bit prescaler. The device also includes a 4-channel 8-bit Analog-to-Digital Converter (ADC) and supports in-circuit serial programming (ICSP) via two pins, allowing firmware updates after PCB assembly.
Architecturally, the PIC12F519 employs a RISC-based processor with only 33 single-word, single-cycle instructions, enabling predictable deterministic execution and small code size. The Harvard-style separate program and data buses eliminate fetch-execute contention, and the CMOS process delivers low quiescent current for battery-powered applications.
Typical applications include LED blink/chaser controllers, small fan or motor PWM drivers, sensor signal-conditioning front-ends, simple user-interface controllers (button + LED), and replacement of discrete logic in consumer appliances. The wide 2.0 V to 5.5 V operating range and integrated peripherals reduce external component count and BOM cost.
When designing with this part, allocate at least one I/O pin to the ICSP programming interface (typically GP0/GP1) and reserve sufficient Flash headroom for field firmware updates. The internal oscillator eliminates external crystal cost but offers reduced accuracy (typically +/- 2% over temperature); use the calibration word for precise timing requirements.
This page synthesizes distributor pricing, drop-in PIC12 family alternatives, and practical design notes not consolidated on a single manufacturer page, giving engineers a one-stop reference for sourcing and second-source decisions.
Drop-in alternatives for PIC12F519-I/P — 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-I/P (same form factor and footprint) — differing in Timers, Package, Operating Temperature, ADC, Instruction Set.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC12F519-E/P
✅ Drop-In✓ In Stock
$0.73 / Unit
View Datasheet →PIC12F509-I/P
✅ Drop-In✓ In Stock
$0.86 / Unit
View Datasheet →PIC12F510-I/P
✅ Drop-In✓ In Stock
$0.63 / Unit
View Datasheet →PIC12F519-I/P Maximum Ratings & Electrical Characteristics
| Core Processor | PIC |
| Core Size | 8-bit |
| Instruction Set | 33 single-word, single-cycle RISC instructions |
| Program Memory (Flash) | 1.5 KB (1K x 12) |
| RAM | 64 bytes |
| Data EEPROM / Flash | 64 bytes |
| Max Clock Speed | 8 MHz |
| Internal Oscillator | 8 MHz (software-selectable calibration) |
| Supply Voltage Range | 2.0 V to 5.5 V |
| I/O Pins | 6 |
| ADC | 4-channel, 8-bit |
| Timers | 1 x 8-bit timer/counter with prescaler + WDT |
| Peripherals | POR, BOR, WDT, ICSP, ADC, PWM (via CCP-like bit-bang) |
| Operating Temperature | -40 C to +85 C (industrial, 'I' suffix) |
| Package | 8-pin PDIP (0.300 inch / 7.62 mm) |
| Mounting Type | Through-Hole |
| MSL Level | 1 (not moisture-sensitive) |
| RoHS Status | Compliant |
| Lead-Free | Yes (matte-tin finish) |
PIC12F519-I/P Pin Configuration
| Pin 1 | VDD — Positive supply voltage (2.0 V to 5.5 V) |
| Pin 2 | GP5/T1CKI/OSC1/CLKIN — Bidirectional I/O; Timer1 clock input; oscillator crystal input |
| Pin 3 | GP4/AN3/T1G/OSC2/CLKOUT — Bidirectional I/O; analog input 3; Timer1 gate; oscillator output |
| Pin 4 | GP3/MCLR/VPP — Input only; Master Clear reset (active low); ICSP voltage apply |
| Pin 5 | GP2/AN2/T0CKI/COUT/INT — Bidirectional I/O; analog input 2; Timer0 clock; comparator out; external interrupt |
| Pin 6 | GP1/AN1/CIN-/ICSPCLK — Bidirectional I/O; analog input 1; comparator inverting; ICSP clock |
| Pin 7 | GP0/AN0/CIN+/ICSPDAT — Bidirectional I/O; analog input 0; comparator non-inverting; ICSP data |
| Pin 8 | VSS — Ground reference |
Typical Applications
PIC12F519-I/P is suitable for 6 applications: LED Blinker / Chaser Controller, Sensor Signal Conditioning Front-End, Small Fan / Motor PWM Driver, User-Interface Button + LED Controller, Replacement of Discrete Logic in Consumer Appliances, Battery-Powered IoT Sensor Node (Sleep Dominant).
LED Blinker / Chaser Controller
The PIC12F519-I/P's 8 MHz internal oscillator, 6 I/O pins, and 64 bytes data Flash make it a near-ideal platform for low-cost LED blink, fade, and chaser controllers. With three GPIO driving up to six multiplexed LEDs directly via charlieplexing, no external crystal is needed and the part fits in under 256 bytes of Flash for typical sequences. The integrated 8-bit timer drives millisecond timing loops without CPU overhead, while the 2.0 V to 5.5 V supply range supports operation from 2xAA cells or USB 5 V rails. Battery-powered decorations can leverage the low-power sleep mode to extend runtime.
Recommended
Sensor Signal Conditioning Front-End
The PIC12F519-I/P's 4-channel 8-bit ADC and 6 GPIO make it well-suited for compact sensor conditioning nodes reading NTC thermistors, photodiodes, or potentiometer-based sensors. The ADC can sample at roughly 25 kSPS aggregate when clocked from the 8 MHz internal oscillator, sufficient for 10 Hz thermal control loops. Brown-out reset and watchdog timer improve field reliability against brown-outs and firmware lock-ups. With 1.5 KB Flash and 64 bytes RAM, designers can implement linearization lookup tables and simple digital filtering. The 2.0 V minimum supply allows battery operation with low quiescent current.
Recommended
Small Fan / Motor PWM Driver
Driving small DC fans and brushed motors with the PIC12F519-I/P is straightforward: a software PWM loop on a single GPIO achieves motor speed control at frequencies above 20 kHz to avoid audible noise. The MCU's 8 MHz instruction rate gives fine 8-bit PWM resolution at 32 kHz carrier with software overhead. Six GPIO allow direction, tachometer input, and fault feedback. The part's 2.0 V to 5.5 V range and small PDIP-8 footprint suit USB-powered 5 V fans as well as low-voltage 3 V micro-motor applications, while integrated brown-out reset guards motor stalling under low supply.
Recommended
User-Interface Button + LED Controller
The PIC12F519-I/P delivers 6 GPIO that comfortably drive 1-2 buttons and 3-4 LEDs in a simple user-interface controller. Internal pull-ups eliminate external resistors, and the 8-bit timer handles button debouncing in software. The 1.5 KB Flash allows designers to encode multi-state behaviors such as long-press, double-click, and indicator patterns. Sleep current in the microamp range makes it ideal for battery-driven remote controls and handheld test fixtures. Industrial -40 C to +85 C temperature rating supports outdoor or appliance environments.
Recommended
Replacement of Discrete Logic in Consumer Appliances
In consumer appliances such as coffee makers, kettle controllers, and small kitchen gadgets, the PIC12F519-I/P can consolidate 2-3 discrete 555 timers or CMOS logic chips into a single 8-pin MCU. Engineers implement timing, sequencing, and safety interlocks in firmware rather than analog RC networks, reducing BOM cost and improving reliability. The internal 8 MHz oscillator eliminates external crystal cost. Brown-out reset and watchdog timer prevent lock-up during brown-out events, important for unattended appliances. The 1.5 KB Flash supports full state-machine firmware for typical appliance flows.
Recommended
Battery-Powered IoT Sensor Node (Sleep Dominant)
For sleep-dominant battery-powered wireless sensor nodes, the PIC12F519-I/P's microamp-level sleep current and ability to wake via watchdog timeout make it a strong fit. The internal 8 MHz oscillator wakes the part in tens of microseconds to read a sensor via the 4-channel 8-bit ADC, transmit on a paired RF chip, then return to sleep. The 64 bytes data Flash retains sensor calibration across power cycles. Operating voltage down to 2.0 V supports 2xAA alkaline or single-cell Li-ion chemistries, extending battery life to multiple years in low-duty-cycle applications.
Recommended
Recommended Products Summary
Engineering reference data for PIC12F519-I/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12F519-I/SN | PIC12F519-I/MC | PIC12F519-E/P | PIC12F509-I/P | PIC12F510-I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | PDIP-8 (0.300 inch) | SOIC-8 (different footprint) | DFN-8 3x2 mm (different footprint) | PDIP-8 - same | PDIP-8 - same | PDIP-8 - same |
| Flash Program Memory | 1.5 KB (1K x 12) | 1.5 KB (1K x 12) | 1.5 KB (1K x 12) | 1.5 KB (1K x 12) | 1 KB (scaled-down variant) | 1 KB (scaled-down variant) |
| RAM | 64 bytes | 64 bytes | 64 bytes | 64 bytes | 41 bytes | 64 bytes |
| Data Flash | 64 bytes | 64 bytes | 64 bytes | 64 bytes | None | None |
| Max Clock Speed | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 4 MHz | 8 MHz |
| Operating Temperature | -40 C to +85 C (industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C (extended) | -40 C to +85 C | -40 C to +85 C |
| Supply Voltage Range | 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 |
| Unit Price (qty 1, USD) | 1.68 | 1.62 | 1.78 | 1.85 | 1.45 | 1.55 |
Key Differentiators
- Larger Flash than PIC12F509 in the same PDIP-8 footprint (vs PIC12F509-I/P)
- Hardware PWM/CCP peripheral not present in PIC12F519 (vs PIC12F510-I/P)
- Through-hole PDIP for hand-prototyping vs surface-mount SOIC/DFN (vs PIC12F519-I/SN (SOIC-8) and PIC12F519-I/MC (DFN-8))
- Lower-cost option than PIC12F1840 family (vs PIC12F1840-I/P)
Design Notes
Place a 100 nF decoupling capacitor within 5 mm of the VDD pin (pin 1) and connect its ground side directly to the VSS pin (pin 8) with a wide, short trace. For designs that switch high-current loads on I/O pins, add a bulk capacitor (>= 10 uF) at the supply rail. Keep the ICSP programming lines (GP0/GP1) on accessible header pads - either a 6-pin RJ-12-like header or a 5-pin 0.1 inch header - to enable in-system firmware updates without removing the MCU. According to Microchip ICSP guidance, these lines need no series resistors for production programming.
GP3 on the PIC12F519 is input-only and doubles as the MCLR reset pin; never drive it as an output. Do not leave MCLR floating in production - tie it to VDD through a 10 kohm resistor so a stable high is maintained, otherwise spurious resets may occur. The internal oscillator's factory calibration is stored in the last Flash word; preserve it during ISP programming or your timing accuracy will degrade from ~+/- 2% to ~+/- 5% or worse across temperature. Brown-out reset must be enabled (BOREN configuration bit) for safe battery operation.
When using ADC inputs (AN0-AN3 on GP0-GP2 and GP4), place a small RC filter (1 kohm + 100 nF) close to the pin to suppress switching noise from digital outputs sharing the same port. Acquire ADC samples after at least 1 us of analog settling time; the datasheet's ADC TAD minimum is 1.6 us with a 4 MHz ADC clock. For applications where the analog source is high impedance (>10 kohm), add an external op-amp buffer because the ADC's sample-and-hold can otherwise introduce gain errors.
Estimated: the PIC12F519-I/P dissipates around 0.5 mA active at 5 V and 8 MHz (per Microchip datasheet DS41165D electrical characteristics table), which is negligible at <5 mW. Even at +85 C ambient with full GPIO drive, the junction temperature rise is below 2 C above ambient in free air, so no heatsink is required. However, when sourcing or sinking >20 mA per pin (the datasheet absolute maximum is 25 mA), keep the cumulative GPIO current under 50 mA to stay within package dissipation limits.
Compliance Information
RoHS compliant per Microchip product page. Lead-free matte-tin finish. AEC-Q100 qualification status not confirmed in provided web data; consumer/industrial only.
