PIC12F609-I/MF - 8-Bit MCU, 1.75KB Flash, 20MHz, 8-DFN | Microchip
MPN: PIC12F609-I/MF β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.18 | $1.18 |
| 10 | $1.05 | $10.50 |
| 100 | $0.93 | $93.00 |
| 500 | $0.82 | $410.00 |
| 1,000 | $0.71 | $710.00 |
| 3,000 | $0.59 | $1,770.00 |
PIC12F609-I/MF Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and peripherals such as timers, comparators, ADCs, and communication interfaces. The 8-bit PIC architecture uses a modified Harvard RISC core with a single accumulator (W) and a 14-bit instruction word, prized for deterministic single-cycle execution and very low power consumption. Within the broader power management hierarchy, 8-bit MCUs sit between simple logic ICs and more capable 32-bit microcontrollers, serving battery-powered IoT nodes, consumer appliances, and automotive sub-systems.
The PIC12F609 operates from 2.0 V to 5.5 V across the industrial -40 C to +85 C range and integrates an internal 8 MHz oscillator that can be calibrated in software via the OSCTUNE register, eliminating the need for an external crystal in most designs. Key peripherals include an 8-bit Timer0/Timer2 with prescaler, a 16-bit Timer1, an enhanced PWM module, a comparator with selectable reference, and a 4-channel 10-bit ADC. Brown-out Reset (BOR) and Power-on Reset (POR) are included for robust supply supervision, and an on-chip In-Circuit Serial Programming (ICSP) interface supports field upgrades.
The 8-pin DFN (MF) package variant measures only 3x3 mm with a thermally enhanced exposed pad, making it ideal for handheld and wearable designs where every square millimeter matters. Code-compatible siblings such as the PIC12F615, PIC12F617, and PIC12HV609 extend this family with additional PWM channels, comparators, or internal shunt regulators.
Typical applications include battery chargers, LED drivers, fan controllers, remote controls, sensor interfaces, and automotive body controllers. For each use case, the wide 2.0-5.5 V supply range allows direct connection to single-cell Li-ion or 3.3 V/5 V regulated rails. Designers should review the datasheet's electrical characteristics section for I-V curve details and derating guidelines specific to the DFN package.
When migrating from the PIC12F508/509, the PIC12F609 adds enhanced PWM and an internal oscillator trim, but the pinout is forward-compatible. Ensure your development toolchain (MPLAB X IDE + XC8 compiler) supports the PIC12F609 device ID before reuse.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes beyond the manufacturer datasheet to accelerate your component selection and PCB bring-up.
Drop-in alternatives for PIC12F609-I/MF β 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 PIC12F609-I/MF (same form factor and footprint) β differing in Internal Oscillator, Package, Comparators, Operating Temperature, Program Memory Size.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC12F615-I/MF
β Drop-Inβ In Stock
$1.32 / Unit
View Datasheet βPIC12F609T-I/MF
β Drop-Inπ Reference alternative (not in catalog)
PIC12F617-I/MF
β Drop-Inβ In Stock
$0.73 / Unit
View Datasheet βPIC12F1822-I/MF
β Drop-Inπ Reference alternative (not in catalog)
PIC12F1840-I/MF
β Drop-Inπ Reference alternative (not in catalog)
PIC12F609-I/MF Maximum Ratings & Electrical Characteristics
| Core Processor | PIC |
| Core Size | 8-Bit |
| Program Memory Size | 1.75 KB (1K x 14) FLASH |
| RAM Size | 64 bytes |
| EEPROM Size | 0 bytes (none) |
| Maximum CPU Speed | 20 MHz |
| Internal Oscillator | 8 MHz (factory calibrated) |
| Supply Voltage Range | 2.0 V to 5.5 V |
| I/O Pins | 6 |
| Timers | 1 x 8-bit, 1 x 16-bit |
| PWM Channels | 1 (enhanced) |
| Comparators | 1 |
| Brown-out Reset / POR | Yes |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Package | 8-pin DFN (MF), 3 x 3 mm with exposed pad |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
PIC12F609-I/MF Pin Configuration
| Pin 1 | VDD β Positive supply voltage (2.0 V to 5.5 V) |
| Pin 2 | GP5/T1CKI/OSC1/CLKIN β GPIO 5 / Timer1 clock input / Crystal oscillator input / External clock input |
| Pin 3 | GP4/AN3/T1G/OSC2/CLKOUT β GPIO 4 / ADC channel 3 / Timer1 gate / Crystal oscillator output / Clock output |
| Pin 4 | GP3/MCLR/VPP β GPIO 3 / Master Clear reset (active low) / Programming voltage |
| Pin 5 | GP2/AN2/T0CKI/INT/COUT/CCP1 β GPIO 2 / ADC channel 2 / Timer0 clock input / External interrupt / Comparator output / Enhanced PWM |
| Pin 6 | GP1/AN1/CIN-/ICSPCLK β GPIO 1 / ADC channel 1 / Comparator inverting input / ICSP clock |
| Pin 7 | GP0/AN0/CIN+/ICSPDAT β GPIO 0 / ADC channel 0 / Comparator non-inverting input / ICSP data |
| Pin 8 | VSS β Ground reference |
Typical Applications
PIC12F609-I/MF is suitable for 6 applications: Battery Charger Controller, LED Driver / Dimmer, Remote Control Transmitter, Sensor Signal Conditioning, Fan / Pump Speed Controller, Automotive Body Electronics.
Battery Charger Controller
The PIC12F609-I/MF is well suited to single-cell Li-ion or NiMH charger controllers where its 2.0-5.5 V supply range matches the battery stack directly. The 6 I/O pins can be assigned to VIN sense, ISENSE (via ADC), gate drive for a P-MOSFET, status LED, and a thermistor input. The enhanced PWM module provides constant-current regulation with 10-bit resolution. Compared with discrete charger ASICs, the PIC12F609 enables programmable CC/CV profiles, charge-termination by delta-T or delta-V detection, and field-upgradeable firmware via ICSP.
Recommended
LED Driver / Dimmer
For single-channel or RGB LED drivers, the PIC12F609-I/MF delivers 1 enhanced PWM output plus 5 GPIOs, sufficient to drive a high-brightness LED via a MOSFET or constant-current driver. Its internal 8 MHz oscillator eliminates external timing components, and the 20 MHz maximum CPU clock enables smooth PWM dimming at 8-bit resolution above the audible band. The part operates directly from 3.3 V or 5 V rails typical in LED lighting strips and architectural fixtures, and its -40 C to +85 C industrial range covers outdoor installations.
Recommended
Remote Control Transmitter
In infrared or sub-GHz remote controls, the PIC12F609-I/MF's deep-sleep nanoWatt current (under 100 nA typical) and 6 I/O pins support up to 4-5 button inputs plus a TX data output driving an IR LED or RF module. The internal 8 MHz oscillator eliminates a crystal, shrinking the PCB to a coin-cell-compatible footprint. A single CR2032 cell typically powers such a design for 5-10 years of intermittent use. ICSP allows firmware updates to fix button mapping or add IR protocols without tooling changes.
Recommended
Sensor Signal Conditioning
The PIC12F609-I/MF integrates an 8-bit ADC, comparator, and 6 GPIOs that together cover most low-speed analog sensor front ends - thermistor, photodiode, or hall-effect interfaces. The internal voltage reference enables ratiometric measurements without external components, while the comparator supports threshold-based wake-up for ultra-low-power duty-cycled sensing. Its small 3x3 mm DFN package fits next to the sensor inside sealed probe assemblies used in HVAC and appliance markets.
Recommended
Fan / Pump Speed Controller
Brushless DC fan or small DC pump speed controllers use the PIC12F609-I/MF to read a tachometer input, generate a PWM drive signal, and supervise stall conditions. The 16-bit Timer1 captures tach edges accurately, while the enhanced PWM produces smooth drive at 25 kHz above audible noise. Brown-out Reset protects the motor driver under low-battery conditions, and the 2.0-5.5 V range supports 3.3 V or 5 V logic rails typical in 5 V / 12 V fan assemblies.
Recommended
Automotive Body Electronics
For non-safety automotive body modules such as interior lighting, window lifters, or seat controllers, the PIC12F609-I/MF operates directly from 12 V battery via an external regulator and provides LIN-compatible UART software emulation. Its -40 C to +85 C industrial temperature range covers most cabin environments. Enhanced PWM enables smooth motor control, while brown-out reset prevents undefined behavior during cranking transients. AEC-Q100 qualification is not present on this part - select PIC12F609-E variant or migrate to PIC16F family for full automotive certification.
Recommended
Recommended Products Summary
Engineering reference data for PIC12F609-I/MF β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12F615-I/MF | PIC12F609T-I/MF | PIC12F617-I/MF | PIC12F1822-I/MF | PIC12F1840-I/MF |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 8-pin DFN (MF), 3x3 mm | 8-pin DFN (MF), 3x3 mm | 8-pin DFN (MF), 3x3 mm | 8-pin DFN (MF), 3x3 mm | 8-pin DFN (MF), 3x3 mm | 8-pin DFN (MF), 3x3 mm |
| Flash Program Memory | 1.75 KB | 1.75 KB | 1.75 KB | 3.5 KB | 3.5 KB | 7 KB |
| RAM | 64 bytes | 64 bytes | 64 bytes | 128 bytes | 128 bytes | 256 bytes |
| Maximum CPU Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 32 MHz (internal) | 32 MHz (internal) |
| PWM Channels | 1 (enhanced) | 3 | 1 | 3 | 4 | 4 |
| 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 | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| I/O Pins | 6 | 6 | 6 | 6 | 6 | 6 |
Key Differentiators
- Lowest-cost 8-pin DFN option with enhanced PWM (vs PIC12F615-I/MF)
- Pin-compatible memory upgrade path (vs PIC12F617-I/MF)
- Factory-calibrated 8 MHz internal oscillator (vs PIC12F1822-I/MF)
Design Notes
Estimated: at 5 V VDD with the CPU active at 20 MHz the PIC12F609-I/MF draws approximately 5-8 mA active and under 100 nA in deep sleep. Place a 100 nF decoupling capacitor within 3 mm of the VDD pin and a 10 uF bulk capacitor near the supply entry point. For battery designs, the nanoWatt sleep mode enables CR2032 lifetimes of 5+ years for typical sensor polling patterns.
The 8-pin DFN (MF) package has an exposed thermal pad that must be soldered to a copper pour on the PCB for mechanical reliability. Connect the exposed pad to VSS to provide a low-impedance ground reference and improved thermal dissipation. Keep all signal traces short and avoid routing high-frequency lines under the IC. Maintain at least 0.2 mm clearance between the pad and adjacent traces to prevent solder wicking.
Do not connect anything to the MCLR pin other than the typical 10 kohm pull-up to VDD - floating the MCLR pin can cause intermittent resets. When using the internal oscillator, allow 1-2 ms startup time before code execution begins. The ICSP clock and data pins (GP1/GP0) must be brought to known states during reset to prevent programming errors; 10 kohm pull-ups are recommended when ICSP is in use.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - select PIC12F609-E/MF variant for industrial temperature range. Lead-free and halogen-free per Microchip environmental certification.
