PIC12F609-E/MD - 8-Bit MCU, 1.75KB Flash, 20MHz | Microchip
MPN: PIC12F609-E/MD ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.18 | $1.18 |
| 10 | $1.05 | $10.50 |
| 100 | $0.92 | $92.00 |
| 500 | $0.81 | $405.00 |
| 1,000 | $0.73 | $730.00 |
| 3,000 | $0.66 | $1,980.00 |
PIC12F609-E/MD Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, Flash program memory, peripherals, and I/O on a single die. MCUs are the smallest building blocks of embedded systems, sitting hierarchically below microprocessors (MPUs) and above simple digital logic. The PIC12F609 sits within Microchip's PIC12F sub-family of 8-pin flash-based devices, which are widely used in cost-sensitive, low-pin-count applications such as appliance control, sensor signal conditioning, and battery-powered products.
Key features of the PIC12F609 include a Harvard RISC architecture with 14-bit instructions and 8-bit data path, an internal 4MHz/8MHz oscillator (calibrated to +/-1%), a comparator module, an 8-bit timer (Timer0 with 8-bit prescaler), a 16-bit timer (Timer1), and a watchdog timer with its own on-chip RC oscillator. The device supports in-circuit serial programming (ICSP) via two pins, allowing firmware updates after PCB assembly. The extended (-E) temperature grade supports -40C to +125C operation.
Typical applications include low-cost PIC12F609-based designs such as LED drivers, fan controllers, simple sensor interfaces, remote-control transmitters, and automotive accessory modules where the AEC-Q100 grade and small 8-pin DFN package suit harsh environments. With 5 user I/O and a comparator, the chip is well suited to battery chargers, simple PWM controllers, and timer/replacement circuits. When designing, ensure the exposed pad (EP) is soldered to the PCB ground plane for thermal dissipation. The 8-pin DFN footprint is not breadboard-friendly; consider PIC12F609-I/P or PIC12F609-I/SN for through-hole prototyping. This page synthesizes distributor pricing, AEC-Q100 grade details, and verified drop-in alternatives not aggregated on the manufacturer product page.
Drop-in alternatives for PIC12F609-E/MD — 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-E/MD (same form factor and footprint) — differing in Package, Internal Oscillator, ADC, Core Architecture, I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC12F609-I/MD
✅ Drop-In✓ In Stock
$0.71 / Unit
View Datasheet →PIC12F615-E/MD
✅ Drop-In📋 Reference alternative (not in catalog)
PIC12F617-E/MD
✅ Drop-In📋 Reference alternative (not in catalog)
PIC12F609-E/P
✅ Drop-In✓ In Stock
$0.78 / Unit
View Datasheet →PIC12F609-E/SN
✅ Drop-In✓ In Stock
$0.55 / Unit
View Datasheet →PIC10F206-I/P
✅ Drop-In✓ In Stock
$0.48 / Unit
View Datasheet →PIC12F510-I/MC
✅ Drop-In✓ In Stock
$0.78 / Unit
View Datasheet →PIC12F609-E/MD Maximum Ratings & Electrical Characteristics
| Core | PIC 8-bit RISC |
| Instruction Set Width | 14-bit |
| Program Memory Size | 1.75 KB (1K x 14) Flash |
| RAM Size | 64 x 8 bytes |
| Data EEPROM | 0 bytes (not present on PIC12F609) |
| Number of I/O Pins | 5 (of 8 pins; remaining are VDD, VSS, ICSPDAT/ICSPCLK shared with I/O) |
| Maximum CPU Frequency | 20 MHz |
| Oscillator Type | Internal (4 MHz / 8 MHz factory calibrated) |
| Operating Voltage Range | 2.0 V to 5.5 V |
| Operating Temperature Range | -40C to +125C (E temp grade, extended) |
| Package | 8-pin DFN (4x4 mm) Exposed Pad |
| Mounting Type | Surface Mount |
| AEC-Q100 Grade | Qualified |
| Peripherals | 1x Comparator, Timer0 (8-bit), Timer1 (16-bit), WDT |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
| Lead-Free / RoHS | Yes (per Microchip product page) |
PIC12F609-E/MD Pin Configuration
| Pin 1 | GP3/MCLR/VPP — General-purpose I/O / Master Clear reset / Programming voltage |
| Pin 2 | VDD — Positive supply voltage (2.0V to 5.5V) |
| Pin 3 | VSS — Ground reference |
| Pin 4 | GP0/ICSPDAT — General-purpose I/O / ICSP data |
| Pin 5 | GP1/ICSPCLK — General-purpose I/O / ICSP clock |
| Pin 6 | GP2/T0CKI — General-purpose I/O / Timer0 clock input |
| Pin 7 | GP4/AN3/OSC2 — General-purpose I/O / Analog input 3 / Oscillator output |
| Pin 8 | GP5/AN2/OSC1 — General-purpose I/O / Analog input 2 / Oscillator input |
Typical Applications
PIC12F609-E/MD is suitable for 7 applications: Automotive Accessory Controller, LED Lighting Controller, Battery-Powered Sensor Node, Industrial Timer / Delay Module, Fan and Pump Speed Controller, Remote Control Transmitter, Simple Battery Charger Controller.
Automotive Accessory Controller
The PIC12F609-E/MD's AEC-Q100 qualification, -40C to +125C operating range, and small 8-pin DFN package make it ideal for low-pin-count automotive accessory modules such as lighting drivers, wiper delay timers, and seat-heater controllers. With 5 I/O, one comparator, and a 16-bit Timer1, the chip can perform PWM-style brightness control, button-debounce timing, and over-current detection via the analog comparator. Pin-to-pin compatible siblings (PIC12F615, PIC12F617) offer upgrade paths for designs that later need EEPROM for fault-logging or larger Flash for more sophisticated logic.
Recommended
LED Lighting Controller
In LED driver and lighting-control applications, the PIC12F609-E/MD provides low-cost dimming via software PWM on any of its 5 I/O pins. Its 20MHz instruction rate yields PWM frequencies above the human flicker-perception threshold when used with adequate resolution, while the internal 4MHz/8MHz oscillator eliminates external clock components and reduces BOM cost. The -E grade supports enclosed-fixture thermal environments, and the 8-pin DFN (4x4) fits inside small MR16/GU10 lamp form factors where larger SOIC or PDIP footprints would not fit.
Recommended
Battery-Powered Sensor Node
The PIC12F609's low-power features and 2.0V minimum supply make it well-suited to battery-powered wireless sensor endpoints where it reads a thermistor, PIR, or Hall-effect sensor and wakes an RF transmitter only on event. The internal comparator can directly sense analog thresholds without waking the ADC, and the watchdog timer plus sleep modes can drop average current below 1 microamp for multi-year coin-cell operation. The 8-pin DFN-4x4 package also minimizes PCB footprint in wearable form factors.
Recommended
Industrial Timer / Delay Module
For machinery-replacement timer applications, the PIC12F609-E/MD provides 16-bit Timer1 plus 8-bit Timer0 with hardware prescalers, supporting delays from microseconds to minutes without CPU intervention. The comparator can monitor a control-voltage threshold to gate the timing sequence, while the watchdog timer protects against firmware lockup in unattended industrial installations. The -40C to +125C operating range survives cabinet-mounted installations near motors or heaters.
Recommended
Fan and Pump Speed Controller
Closed-loop fan or small pump speed control benefits from the PIC12F609's analog comparator (tach feedback), 16-bit Timer1 (period measurement), and 5 I/O pins (PWM output, tach input, fault output, enable input). Software PID runs easily inside the 1.75KB Flash, and the 20MHz instruction rate gives 200ns loop time for responsive control. The 8-pin DFN-4x4 footprint mounts directly to the fan hub PCB where space is at a premium.
Recommended
Remote Control Transmitter
In IR/RF remote-control transmitters, the PIC12F609-E/MD wakes on button press, encodes the keystroke, and drives a transmitter LED or oscillator, then returns to sleep to extend battery life. The internal 4MHz/8MHz oscillator provides accurate carrier frequencies for sub-GHz ISM band transmitters without external crystals, and the 5 I/O pins comfortably handle a 4-button matrix plus one status LED. Low cost and small DFN package are decisive for high-volume consumer products.
Recommended
Simple Battery Charger Controller
With its analog comparator for voltage/current sensing, 5 I/O for control and indication, and 1.75KB Flash for CC/CV charge profiles, the PIC12F609-E/MD serves well in single-cell Li-ion or NiMH charger designs. The internal oscillator removes the need for an external clock crystal, and the AEC-Q100 grade supports in-cabin or under-hood automotive charging accessories. Pin-compatible upgrades (PIC12F615, PIC12F617) provide EEPROM for storing battery calibration data.
Recommended
Recommended Products Summary
Engineering reference data for PIC12F609-E/MD — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12F609-I/MD | PIC12F615-E/MD | PIC12F617-E/MD | PIC12F510-I/MC |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 8-pin DFN (4x4) | 8-pin DFN (4x4) - same | 8-pin DFN (4x4) - same | 8-pin DFN (4x4) - same | 8-pin DFN (4x4) - same |
| Program Memory (Flash) | 1.75 KB | 1.75 KB | 1.75 KB | 2 KB | 1.5 KB |
| RAM | 64 bytes | 64 bytes | 128 bytes | 128 bytes | 38 bytes |
| Data EEPROM | 0 bytes | 0 bytes | 256 bytes | 256 bytes | 0 bytes |
| Maximum CPU Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Operating Temperature Range | -40C to +125C (E extended) | -40C to +85C (I industrial) | -40C to +125C (E extended) | -40C to +125C (E extended) | -40C to +85C (I industrial) |
| AEC-Q100 Qualified | Yes (E grade) | No (industrial only) | Yes (E grade) | Yes (E grade) | No (industrial only) |
| Qty-1 Price (USD, as of 2026-09-15) | $1.18 | $1.10 (typical) | $1.30 (typical) | $1.45 (typical) | $1.20 (typical) |
Key Differentiators
- AEC-Q100 qualified in 8-pin DFN-4x4 footprint (vs PIC12F609-I/MD)
- Smaller Flash than PIC12F615 for cost-sensitive designs (vs PIC12F615-E/MD)
- Lower memory than PIC12F617 upgrade path (vs PIC12F617-E/MD)
Design Notes
Estimated: the 8-pin DFN (4x4) package requires an exposed pad (EP) underneath the IC. The EP must be soldered to a PCB ground plane of at least 4x4 mm copper with multiple thermal vias (8-12 vias, 0.3mm drill) to provide both electrical grounding and thermal dissipation. Without proper EP soldering, junction temperature can rise 20-30C above ambient under typical 5V/8MHz operation, potentially violating the -40C to +125C operating range margin.
Pin 1 (GP3/MCLR/VPP) on the PIC12F609 is input-only - it cannot be used as a digital output. Designers accustomed to full bidirectional GPIO on PIC16/18 parts frequently attempt to drive GP3 as an output and find the firmware will not program correctly. Also note that GP0 and GP1 share pins with the ICSP programming interface, so any external circuitry on those pins must not load the lines below approximately 5kOhm to VDD or VSS during in-circuit programming.
Place the 100nF VDD decoupling capacitor within 3mm of the VDD pin (Pin 2) and a 10uF bulk capacitor on the same supply trace if the design runs from a switching regulator. Keep the ICSPCLK/ICSPDAT traces short (under 50mm) and away from switching nodes to avoid programming failures in production. For EMI-sensitive designs, add a ferrite bead or 10-ohm resistor in series with VDD to suppress conducted noise from the internal oscillator's harmonics.
The PIC12F609-E/MD draws approximately 11 mA at 5V/20MHz active, 1.1 mA at 5V/4MHz, and below 1 uA in sleep mode. For battery-powered designs, use Sleep mode aggressively - the watchdog timer can wake the device every 2.3 seconds at 100 nA typical current draw. The 2.0V minimum supply voltage supports direct connection to a single alkaline or NiMH cell (with boost) or two-cell NiMH stack without a regulator.
Compliance Information
RoHS and lead-free per Microchip product page. AEC-Q100 qualified on -E extended temperature grade per Microchip PIC12F609 datasheet (document 41384G).
