PIC12F617-E/SN - 8-Bit 20MHz 3.5KB Flash MCU 8-SOIC | Microchip
MPN: PIC12F617-E/SN ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.35 | $1.35 |
| 10 | $1.22 | $12.20 |
| 100 | $1.08 | $108.00 |
| 500 | $0.95 | $475.00 |
| 1,000 | $0.84 | $840.00 |
PIC12F617-E/SN Overview
An 8-bit microcontroller (MCU) is a small computer-on-a-chip that combines a CPU, RAM, non-volatile program memory, and peripherals on a single die. Within the broader taxonomy, the PIC12F617 belongs to the PIC12F family of 8-pin flash MCUs, which sits under the mid-range PIC architecture, the Microchip PIC microcontroller family, and ultimately the integrated circuit / semiconductor hierarchy. This class of device is the simplest possible "brain" for an embedded product and is widely used for deterministic real-time control where an ASIC or higher-end MCU would be wasteful.
Key features include two 8-bit timers (TMR0/TMR2), one 16-bit timer, an enhanced PWM module, a user-configurable comparator with hysteresis, a 5-channel 10-bit ADC, brown-out reset (BOR), power-on reset (POR), and a watchdog timer (WDT). The 25 mA source/sink I/O capability eliminates the need for external drivers in many LED, relay, and logic-level interface designs, while the internal 4/8 MHz oscillator removes external crystal cost.
Architecturally, the PIC12F617 uses Microchip's mid-range 14-bit instruction set with 8 hardware stack levels and 35 single-word instructions. Self-programmable flash supports in-circuit serial programming (ICSP) for field firmware updates, while the comparator+PW+ADC trio enables single-chip analog feedback loops (e.g., closed-loop LED current regulation, threshold detectors, hysteretic converters).
Typical applications include LED lighting controllers, battery chargers, smoke detectors, small appliance controls, sensor signal conditioning, and hobby/educational microcontroller platforms. In each, the part's combination of low pin count, on-board peripherals, and wide voltage range lets it replace a discrete analog board.
Designers should note that the "E" suffix indicates the -40C to +125C extended industrial temperature grade, versus the "I" suffix parts rated -40C to +85C. Programming is via ICSP using the PICKit or MPLAB ICD tools, with MPLAB X IDE and XC8 compiler as the standard software toolchain. This page consolidates distributor data, drop-in equivalents, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC12F617-E/SN — 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 PIC12F617-E/SN (same form factor and footprint) — differing in Operating Temperature, Package, Internal Oscillator, Timers, Comparators.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC12F617-I/SN
✅ Drop-In✓ In Stock
$0.85 / Unit
View Datasheet →PIC12F617-I/P
✅ Drop-In✓ In Stock
$1.14 / Unit
View Datasheet →PIC12F617-E/P
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC12F615-I/SN
✅ Drop-In✓ In Stock
$0.52 / Unit
View Datasheet →PIC12F615-E/SN
✅ Drop-In✓ In Stock
$0.84 / Unit
View Datasheet →PIC12F1571-I/SN
✅ Drop-In✓ In Stock
$0.6549 / Unit
View Datasheet →PIC12F1571-E/SN
✅ Drop-In✓ In Stock
$0.65 / Unit
View Datasheet →PIC12F617-E/SN Maximum Ratings & Electrical Characteristics
| Core Processor | PIC |
| Core Size | 8-Bit |
| Core Architecture | Mid-Range PIC (14-bit instructions) |
| Max CPU Speed | 20 MHz (200 ns instruction cycle) |
| Program Memory Type | Flash (self read/write) |
| Program Memory Size | 3.5 KB (2K x 14) |
| RAM | 128 bytes |
| I/O Pins | 6 |
| Internal Oscillator | 4 MHz / 8 MHz selectable |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| Operating Temperature | -40C to +125C (E suffix, extended) |
| Timers | 2 x 8-bit (TMR0, TMR2) + 1 x 16-bit |
| PWM Module | Enhanced PWM (ECCP) |
| Comparator | 1, user-configurable with hysteresis |
| I/O Source/Sink Current | 25 mA per pin |
| Stack Levels | 8 hardware |
| Instruction Count | 35 single-word instructions |
| Package | 8-SOIC (SN), 0.154" / 3.90 mm body width |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC12F617-E/SN 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/AN3/T1G/OSC2/CLKOUT — GPIO GP4, analog input 3, Timer1 gate, oscillator output |
| Pin 4 | GP3/MCLR/VPP — GPIO GP3 input-only, Master Clear (reset), programming voltage |
| Pin 5 | GP2/AN2/T0CKI/INT/COUT — GPIO GP2, analog input 2, Timer0 clock, external interrupt, comparator output |
| Pin 6 | GP1/AN1/CIN-/ICSPCLK — GPIO GP1, analog input 1, comparator inverting input, ICSP clock |
| Pin 7 | GP0/AN0/CIN+/ICSPDAT — GPIO GP0, analog input 0, comparator non-inverting input, ICSP data |
| Pin 8 | VSS — Ground reference |
Typical Applications
PIC12F617-E/SN is suitable for 6 applications: LED Lighting Controllers, Battery Chargers and Power Management, Smoke Detectors and Safety Sensors, Small Appliance Motor Control, Sensor Signal Conditioning Hubs, Hobby and Educational Microcontroller Learning.
LED Lighting Controllers
The PIC12F617-E/SN is well suited for small LED lighting controllers because its 6 GPIO pins each source/sink up to 25 mA, enough to drive multiple indicator LEDs or low-current strips directly without external drivers. The internal 4/8 MHz oscillator removes the need for an external crystal, and the 3.5 KB flash comfortably fits color-mixing and PWM-fade firmware. According to the Microchip datasheet, the ECCP module supports center-aligned PWM at frequencies suitable for flicker-free dimming above 100 Hz, while the user-configurable comparator with hysteresis can perform closed-loop current sensing without an external op-amp. The -40C to +125C temperature range also suits outdoor and industrial fixtures.
Recommended
Battery Chargers and Power Management
Battery-powered chargers for Li-Ion, NiMH, and lead-acid cells benefit from the PIC12F617-E/SN's wide 2.0V-5.5V supply range and low-power sleep modes. The user-configurable comparator with hysteresis enables accurate charge-termination detection (negative delta-V, dT/dt, or absolute voltage threshold) without external analog ICs. The 16-bit timer provides precise timing for CC/CV charge profiles, and the brown-out reset (BOR) and watchdog timer (WDT) ensure safe operation across battery discharge curves. The 25 mA GPIO sink capability can directly switch P-channel MOSFETs for the high-side power path, eliminating a discrete transistor in many designs.
Recommended
Smoke Detectors and Safety Sensors
Smoke detectors, CO alarms, and gas sensors rely on the PIC12F617-E/SN's low power consumption, integrated analog peripherals, and extended -40C to +125C temperature range. The internal 8 MHz oscillator provides a stable timebase for the mandatory chamber self-test chirp, while the comparator's user-configurable hysteresis rejects false triggers from environmental noise. With 3.5 KB flash and 128 B RAM, the device can implement UL 217 signal-processing algorithms while leaving room for low-battery detection and end-of-life signaling. The watchdog timer (WDT) ensures the alarm pattern resumes after any firmware hang, a critical safety requirement per UL 2034 / EN 50291.
Recommended
Small Appliance Motor Control
Small DC and brushless-DC (BLDC) motor controllers in fans, pumps, and kitchen tools fit naturally on the PIC12F617-E/SN. The ECCP module generates complementary PWM with programmable dead-band delay, perfect for half-bridge or full-bridge MOSFET drives, while the 16-bit timer supports precise tachometer measurement from Hall sensors or back-EMF. The user-configurable comparator triggers on zero-cross events for sensorless BLDC commutation, removing the need for a separate op-amp. The -40C to +125C temperature grade handles under-hood automotive or industrial environments.
Recommended
Sensor Signal Conditioning Hubs
Multi-sensor IoT nodes (temperature, humidity, light, PIR motion) leverage the PIC12F617-E/SN as a low-cost hub that reads analog signals and produces a digital or PWM output. The integrated comparator can wake the MCU from sleep when a sensor threshold is crossed, dramatically lowering average current for battery-powered IoT devices. The 6 GPIO pins can host I2C or SPI buses to external sensors, and the 128-byte RAM can buffer small data packets before transmitting. With 3.5 KB flash, designers can implement debounce, calibration, and basic linearization routines without external EEPROM.
Recommended
Hobby and Educational Microcontroller Learning
The PIC12F617-E/SN is widely adopted in education and maker communities because it combines a documented mid-range instruction set (35 instructions) with an 8-SOIC package that is easy to breadboard and hand-solder. MPLAB X IDE with the free XC8 compiler provides a full C-language toolchain, and the PICKit 4 / Snap programmer supports in-circuit serial programming without removing the chip. The combination of 6 GPIO pins, 3.5 KB flash, and an integrated comparator with PWM gives students enough analog and digital I/O to learn interrupts, timers, ADC-free sensor reads, and PWM output in a single low-cost project.
Recommended
Recommended Products Summary
Engineering reference data for PIC12F617-E/SN — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12F617-I/SN | PIC12F615-I/SN | PIC12F1571-I/SN |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 8-SOIC (SN) | 8-SOIC (SN) - same | 8-SOIC (SN) - same | 8-SOIC (SN) - same |
| Core Architecture | Mid-Range PIC (14-bit) | Mid-Range PIC (14-bit) - same | Mid-Range PIC (14-bit) - same | Enhanced Mid-Range PIC (14-bit) |
| Max CPU Speed | 20 MHz | 20 MHz | 20 MHz | 32 MHz |
| Program Memory | 3.5 KB Flash | 3.5 KB Flash | 1.75 KB Flash | 1.75 KB Flash |
| RAM | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| ECCP PWM | Yes | Yes | No (basic 10-bit PWM only) | Yes (16-bit PWM) |
| Comparator | Yes, with hysteresis | Yes, with hysteresis | No | Yes |
| Temperature Range | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
| Approx. Unit Price (qty-1) | $1.35 | $1.30 | $1.15 | $1.40 |
Key Differentiators
- Enhanced PWM (ECCP) module with center-aligned and half-bridge modes (vs PIC12F615-I/SN)
- User-configurable comparator with hysteresis for analog signal conditioning (vs PIC12F615-I/SN)
- Extended -40C to +125C industrial temperature grade on E suffix (vs PIC12F617-I/SN)
- 3.5 KB flash double that of the PIC12F615 family (vs PIC12F615-I/SN)
Design Notes
Estimated: At VDD=5V and 20 MHz CPU clock, the PIC12F617-E/SN active current is approximately 5 mA per datasheet typical curves. Adding the internal 8 MHz oscillator and disabling all peripherals drops this to roughly 1.1 mA. In sleep mode current drops to under 50 nA typical (watchdog disabled). For battery-powered designs, sleep-mode operation with periodic WDT wake-ups is the standard low-power pattern. Always place a 0.1 uF decoupling capacitor within 5 mm of the VDD pin, with a bulk 1-10 uF tantalum or ceramic capacitor on the supply rail.
The 8-SOIC (SN) package has a thermal resistance of approximately 100 C/W, so heat dissipation is not a concern at 5 mA active current. PCB layout best practices for the PIC12F617-E/SN: keep the ICSP programming header (PGD, PGC, VPP, VDD, VSS) accessible for in-circuit programming, route GP3/MCLR to a 10 kohm pull-up to VDD, and place the GP1/GP0 analog inputs away from switching PWM traces to avoid noise coupling into ADC or comparator channels. If using the internal oscillator, no external crystal traces are needed, simplifying layout significantly.
Common pitfalls with the PIC12F617-E/SN include: (1) forgetting that GP3 is input-only and cannot be used as a digital output; (2) configuring the comparator output to drive GP1/CIN- when the pin needs to function as a regular GPIO; (3) using the internal 8 MHz oscillator without first verifying the OSCCON register settings, which can leave the CPU running at 31 kHz LFINTOSC; (4) omitting the configuration word settings for BOR and WDT, which can leave the device unprotected at low VDD; (5) exceeding the 25 mA per-pin or 200 mA package total current rating by stacking multiple high-current loads on adjacent pins.
The PIC12F617-E/SN's 6 GPIO pins transition at roughly 10 ns rise/fall times at 20 MHz CPU clock, producing harmonics up to 100 MHz on switching edges. Place a 100 ohm series resistor on any GPIO driving long off-board cables to dampen reflections, and keep analog input traces (GP0, GP1, GP4, GP5 when used as ADC inputs) short and guarded by ground pours. The user-configurable comparator is particularly sensitive to switching noise - if it shows false triggers, add 10-100 pF ceramic capacitors on the comparator input pins to filter high-frequency spikes.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - for AEC-Q100 automotive-grade applications, choose a PIC16F or PIC18F part from the automotive portfolio. Lead-free (Pb-free) and halogen-free packaging per Microchip green-compliance statements.
