PIC12F519-E/MS - 8-bit 8MHz 1.5KB Flash MCU 8-MSOP | Microchip
MPN: PIC12F519-E/MS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.98 | $0.98 |
| 10 | $0.89 | $8.90 |
| 100 | $0.79 | $79.00 |
| 500 | $0.71 | $355.00 |
| 1,000 | $0.63 | $630.00 |
PIC12F519-E/MS Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and configurable peripherals around a shared bus. The PIC12F519 belongs to the PIC12F family of baseline and mid-range 8-bit PIC microcontrollers, which sit under the broader PIC microcontroller umbrella and ultimately the Microcontroller (MCU) -> Microcomputer -> Embedded Computing product hierarchy. nanoWatt power-management technology gives the PIC12F519 deep sleep and active-clock modes, allowing the device to draw microamps in standby, which is critical for battery-powered IoT sensors and remote controls.
Key differentiating features include 33 single-word/single-cycle RISC instructions, 8 MHz internal oscillator, 6 general-purpose I/O pins shared with peripheral functions, 8-bit timer with watchdog, and an enhanced Flash program memory that supports in-circuit serial programming (ICSP). The PIC12F519 is specified for 2.0V to 5.5V operation across -40C to +125C (E temperature grade), enabling use in both consumer and industrial environments.
The PIC12F519 is built on a baseline RISC core with single-cycle instruction execution and hardware multiply support, achieving deterministic interrupt latency. The integrated 8 MHz internal oscillator eliminates the need for external resonators on low-cost boards, while the ICSP interface enables field updates without removing the device.
Typical applications include consumer remote controls, LED lighting controllers, low-end sensor nodes, appliance user interfaces, security PIR subsystems, and general-purpose logic-replacement boards where a few smart pins replace discrete logic.
When designing with the PIC12F519-E/MS, leave one pin dedicated to ICSP programming (typically GP1/GP0) and pay attention to the absolute maximum VDD of 5.5V. Use the WDT and Brown-out Reset features to harden firmware in electrically noisy environments, and consult Microchip's nanoWatt design notes to minimize average current for battery applications.
This page synthesizes Microchip datasheet parameters, current distributor pricing (as of 2026-09-15), drop-in MSOP-8 alternatives, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for PIC12F519-E/MS — 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/MS (same form factor and footprint) — differing in Package, Timers, Core Architecture, Internal Oscillator, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC12F519-I/MS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC12F519-E/MC
✅ Drop-In✓ In Stock
$0.64 / Unit
View Datasheet →PIC12F510-I/MS
✅ Drop-In✓ In Stock
$0.42 / Unit
View Datasheet →PIC12F509-E/MS
✅ Drop-In✓ In Stock
$0.82 / Unit
View Datasheet →PIC12F508-E/MS
✅ Drop-In✓ In Stock
$0.5479 / Unit
View Datasheet →PIC12F1501-E/P
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.92 / Unit
View Datasheet →PIC12F519-E/MS Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC |
| Program Memory Type | Flash |
| Program Memory Size | 1.5 KB (1K x 12) |
| RAM Size | 64 bytes |
| Data EEPROM | None (Flash-based) |
| Maximum CPU Speed | 8 MHz |
| Internal Oscillator | 8 MHz (4 MHz calibrated default per DigiKey listing) |
| Operating Voltage (VDD) | 2.0 V to 5.5 V |
| I/O Pins | 6 |
| Timers | 1 x 8-bit with Watchdog Timer |
| ADC | None |
| Instruction Set | 33 single-word/single-cycle instructions |
| Operating Temperature | -40C to +125C (E grade, Industrial) |
| Package | 8-MSOP (3.00 mm) |
| Mounting Type | Surface Mount |
| MSL Level | 1 (per Microchip MSOP rating) |
| Lead Free / RoHS | Lead Free / RoHS Compliant (MS suffix) |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
| Power-Saving Technology | nanoWatt |
PIC12F519-E/MS Pin Configuration
| Pin 1 | VDD — Positive supply voltage (2.0V to 5.5V) |
| Pin 2 | GP5/T1CKI/OSC1/CLKIN — GPIO GP5 / Timer1 clock input / Oscillator input |
| Pin 3 | GP4/GP3/MCLR/VPP — GPIO GP4 (input only) / Master Clear reset / Programming voltage |
| Pin 4 | GP3/VPP — GPIO GP3 (input only) / Programming voltage |
| Pin 5 | GP2/COG/INT/CCP1 — GPIO GP2 / Comparator output / External interrupt / Capture-Compare-PWM |
| Pin 6 | GP1/ICSPCLK — GPIO GP1 / ICSP clock (programming) |
| Pin 7 | GP0/ICSPDAT — GPIO GP0 / ICSP data (programming) |
| Pin 8 | VSS — Ground reference |
Typical Applications
PIC12F519-E/MS is suitable for 6 applications: Consumer Remote Control (IR/RF), LED Lighting Controller (Accent/Strip), PIR Motion Sensor Subsystem, Appliance User Interface (Cap-Touch Front Panels), Battery Sensor Node (1-Wire/I2C Slave), Toy and Hobby Logic Replacement Board.
Consumer Remote Control (IR/RF)
The PIC12F519-E/MS fits IR/RF remote controls because its 6 I/O pins are enough to scan a 3x3 keypad matrix (using charlieplexing) and drive a single IR LED or low-cost RF transmitter. With 1.5 KB of Flash, firmware comfortably holds IR protocol encoders (RC5, NEC, SIRC) and button debouncing state machines. The 2.0V-5.5V VDD range supports direct alkaline (2xAA) supply, while nanoWatt sleep currents below 1 uA extend battery life to multi-year standby. Designers should reserve GP1 for ICSPCLK and GP0 for ICSPDAT to retain in-circuit reprogramming of returned units.
Recommended
LED Lighting Controller (Accent/Strip)
The PIC12F519-E/MS can run simple constant-current LED controllers and addressable-WS2812 strip drivers via bit-banged GPIO, where its 8 MHz CPU and 6 I/O pins provide enough throughput for low-density WS2812 chains. Flash holds protocol handlers and fade math without external EEPROM. nanoWatt sleep helps battery-powered decorative lighting, while the 2.0V-5.5V VDD range accepts a single Li-ion or 3.3V regulated rail. Use GP2 for the LED data line (CMOS output drive) and GP4 for an optional button input.
Recommended
PIR Motion Sensor Subsystem
In PIR motion detector modules the PIC12F519-E/MS handles comparator/sensor conditioning, timer-based debouncing, and relay/LED alarm drive. With its integrated 8-bit timer and WDT, the firmware can sustain seconds-long integration windows without external RTC. The -40C to +125C E-grade rating suits outdoor security installations, while BOR prevents false triggers during brown-out events on long cable runs. Reserve GP3/MCLR for ICSP programming to allow field firmware updates after the lens is fitted.
Recommended
Appliance User Interface (Cap-Touch Front Panels)
The PIC12F519-E/MS can read a small cap-touch button array or rotary encoder via software-driven charge-transfer on its GPIO, eliminating dedicated touch ICs in budget appliance front panels. 1.5 KB Flash holds multi-mode state logic (idle/run/clean/error) and 6 I/O pins drive an LED row plus the touch sense lines. The industrial -40C to +125C range tolerates kitchen/cooking-appliance ambient temperatures, and the wide VDD accepts unregulated 5V or 3.3V rails directly. Use WDT to recover from firmware lockups caused by EMI near the touch surface.
Recommended
Battery Sensor Node (1-Wire/I2C Slave)
As a low-power I2C or 1-Wire slave in a distributed sensor network, the PIC12F519-E/MS excels: nanoWatt sleep currents under 1 uA let it run years on a coin cell, and 6 I/O pins cover SCL/SDA plus interrupt and wake lines. Its 1.5 KB Flash holds simple slave protocol stacks and CRC handlers. BOR and WDT harden the node against brown-outs in long-life deployments like building automation or agricultural soil sensors. Provide an external pull-up on MCLR/VPP (pin 3) per Microchip's recommendation.
Recommended
Toy and Hobby Logic Replacement Board
The PIC12F519-E/MS replaces 74-series discrete glue logic in hobby and toy designs, executing sound/light/motor sequences with timing handled by the on-chip 8-bit timer. 1.5 KB Flash comfortably holds 30-60 seconds of simple sound/light choreography, and the 8-MSOP package fits inside small enclosures. The 2.0V-5.5V range accommodates 2xAA, 3xAAA, or single Li-ion packs. Use ICSP pads on the production PCB so the same board can be re-flashed for different SKUs without changing the BOM.
Recommended
Recommended Products Summary
Engineering reference data for PIC12F519-E/MS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12F519-I/MS | PIC12F519-E/MC | PIC12F510-I/MS | PIC12F509-E/MS | PIC12F508-E/MS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 8-MSOP | 8-MSOP - same | 8-MSOP - same (DFN/MC variant) | 8-MSOP - same | 8-MSOP - same | 8-MSOP - same |
| Program Memory (Flash) | 1.5 KB | 1.5 KB | 1.5 KB | 1 KB | 1 KB | 0.75 KB |
| RAM | 64 bytes | 64 bytes | 64 bytes | 38 bytes | 41 bytes | 25 bytes |
| Maximum CPU Frequency | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| Operating Voltage | 2.0V to 5.5V | 2.0V to 5.5V | 2.0V to 5.5V | 2.0V to 5.5V | 2.0V to 5.5V | 2.0V to 5.5V |
| Temperature Grade | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) | -40C to +125C (E) |
| I/O Pins | 6 | 6 | 6 | 6 | 6 | 6 |
| ADC | None | None | None | None | None | None |
| ICSP Programming | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- 1.5 KB Flash - 50% more code space than PIC12F508 (vs PIC12F508-E/MS)
- Baseline-plus instruction set vs reduced core on PIC12F509/508 (vs PIC12F509-E/MS)
- E-grade -40C to +125C industrial temperature range (vs PIC12F519-I/MS)
- nanoWatt Sleep mode under 1 uA (vs PIC10F200)
Design Notes
Reserve GP1 (pin 6) as ICSPCLK and GP0 (pin 7) as ICSPDAT and expose both as 0.1-inch test pads on the production PCB so that returned units can be re-flashed without removing the MSOP package. Place a 10 kohm pull-up on MCLR/VPP (pin 3) and a 100 nF decoupling capacitor within 5 mm of VDD (pin 1); the MCLR pull-up is mandatory in production unless the internal MCLR is disabled in configuration bits.
For battery applications, route firmware to use the nanoWatt Sleep mode with WDT wake-up; expect typical Sleep current under 1 uA at 3V. Brown-out Reset (BOR) should be enabled at the lowest available threshold to avoid executing corrupted Flash during cell sag. Do not allow any pin to source/sink more than 25 mA (per-pin) or 125 mA (package) to stay within Absolute Maximum ratings.
The MSOP-8 thermal pad (if present) should be soldered to a small copper pour for mechanical stability, though the PIC12F519 dissipates negligible power. Keep the analog/digital ground split simple - this part has no ADC, so a single ground pour is acceptable. Place the ICSP test pads on the board edge or under a service cover to keep them accessible without exposing production test fixtures.
GP3 (pin 4) is input-only and cannot be driven as an output; do not assign it to an LED or active-low load. MCLR/VPP (pin 3) is shared with GP4 and can become a programming pin - never tie it directly to VDD without a series resistor or pull-up, otherwise in-circuit programming will fail. Configuration bits must be set to disable the watchdog only if your firmware intentionally handles timing differently from WDT defaults.
Compliance Information
MS suffix denotes lead-free MSOP packaging per Microchip ordering information. RoHS and REACH compliance confirmed by Microchip product page. Not AEC-Q100 qualified; for automotive designs, choose the PIC12F519T-E/MS automotive grade or migrate to PIC12F1840-E/MS.
