PIC12F617T-I/MF - 8-Bit PIC MCU, 3.5KB Flash, 20MHz, 8-DFN | Microchip
MPN: PIC12F617T-I/MF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.66 | $16.60 |
| 100 | $1.48 | $148.00 |
| 500 | $1.33 | $665.00 |
| 1,000 | $1.19 | $1,190.00 |
PIC12F617T-I/MF Overview
An 8-bit PIC microcontroller is a class of Reduced Instruction Set Computer (RISC) MCU built around Harvard architecture with separate program and data buses. Within the broader taxonomy, the PIC12F617 belongs to PIC12F family -> 8-bit PIC MCU -> Microcontroller (MCU) -> Microprocessor and logic IC family -> Semiconductor. Its small pin count, integrated oscillator, and analog peripherals target cost- and space-constrained embedded designs.
Key specifications include 1.75KB usable program Flash after boot block, 35 single-word instructions, 8-level hardware stack, 2.5V/3.3V/5V operating voltage range, 25mA source/sink per I/O, and industrial -40C to +85C temperature range. The on-chip Enhanced Capture/Compare/PWM (ECCP) module supports half-bridge and full-bridge control and an auto-shutdown feature, while the comparator output can drive the timer or trigger an ADC conversion. This integration replaces several external analog components, shrinking BOM and PCB area.
The PIC12F617T-I/MF uses a 14-bit instruction word with single-cycle execution (except branches) and a 20MHz internal oscillator, giving 200ns instruction cycle. The 10-bit ADC with up to 4 input channels provides 1 LSB resolution adequate for sensor reading. The combined comparator + PWM + ADC chain makes the part well-suited for closed-loop control loops where analog feedback drives power conversion.
Typical applications include LED lighting controllers, battery chargers, small motor control, sensor signal conditioning, and low-cost consumer appliances. Automotive-grade variants exist under a separate ordering code for vehicles. Designers choose the PIC12F617T-I/MF when they need an integrated analog front end in an 8-pin DFN, freeing GPIO for digital I/O and reducing external part count.
Drop-in alternatives for PIC12F617T-I/MF — 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 PIC12F617T-I/MF (same form factor and footprint) — differing in Package, Internal Oscillator, Operating Temperature, ADC, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC12F617-I/MF
✅ Drop-In✓ In Stock
$0.73 / Unit
View Datasheet →PIC12F615T-I/MF
✅ Drop-In✓ In Stock
$0.46 / Unit
View Datasheet →PIC12F617-E/MF
✅ Drop-In✓ In Stock
$0.71 / Unit
View Datasheet →PIC12F617T-I/SN
✅ Drop-In📋 Reference alternative (not in catalog)
PIC12F1822T-I/MF
✅ Drop-In✓ In Stock
$1.12 / Unit
View Datasheet →PIC12F617-I/P
✅ Drop-In✓ In Stock
$1.14 / Unit
View Datasheet →PIC12F617T-I/MF Maximum Ratings & Electrical Characteristics
| Core Processor | PIC |
| Core Size | 8-Bit |
| Program Memory | 3.5KB (2K x 14) Flash |
| Data RAM | 128 bytes |
| Data EEPROM | Not listed in verified data |
| Maximum CPU Speed | 20 MHz |
| Instruction Set | 35 single-word instructions |
| Hardware Stack | 8 levels |
| Supply Voltage Range | 2.5V / 3.3V / 5V (4.5V to 5.5V nominal) |
| I/O Pins | 6 |
| ADC | 10-bit, up to 4 input channels |
| Timers | Two 8-bit + one 16-bit |
| Enhanced PWM/CCP | ECCP module (half/full-bridge) |
| Comparators | 1 on-chip analog comparator |
| Internal Oscillator | 8 MHz |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 8-pin DFN (3x3 mm) with exposed pad |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel |
| RoHS Status | Compliant |
PIC12F617T-I/MF Pin Configuration
| Pin 1 | GP5/AN0/CIN+/T1CKI/CCP1/OC1B/P1A — I/O port with AN0, comparator input+, Timer1 clock, ECCP1, OC1B, PWM P1A |
| Pin 2 | GP4/AN3/CIN-/T1G/CCP2/COG/CLKR — I/O port with AN3, comparator input-, Timer1 gate, CCP2, COG, clock reference |
| Pin 3 | GP3/MCLR/VPP — I/O/Master Clear (reset, active low) or programming voltage input |
| Pin 4 | VSS — Ground reference |
| Pin 5 | GP2/AN2/T0CKI/INT/COUT/CCP1 — I/O with AN2, Timer0 clock, external interrupt, comparator output, CCP1 |
| Pin 6 | GP1/AN1/CIN-/VREF/ICSPCLK — I/O with AN1, comparator input-, ADC voltage reference, ICSP clock |
| Pin 7 | GP0/AN0/CIN+/ICSPDAT — I/O with AN0, comparator input+, ICSP data |
| Pin 8 | VDD — Positive supply voltage (2.5V to 5V) |
Typical Applications
PIC12F617T-I/MF is suitable for 6 applications: LED Lighting Controller, Battery Charger Controller, Small Brushless DC Motor Control, Sensor Signal Conditioning, Consumer Appliance Control, Automotive Accessory Module.
LED Lighting Controller
The PIC12F617T-I/MF drives LED strings using its Enhanced CCP (ECCP) module with 10-bit PWM resolution at 20MHz, giving 1024 brightness levels for smooth dimming. The on-chip analog comparator monitors current-sense feedback and triggers PWM auto-shutdown within microseconds on overcurrent, replacing a dedicated protection IC. With 6 I/O pins and 1.75KB usable flash, the MCU handles both the lighting protocol and basic user interface. Compared to a discrete 555+MOSFET solution, this part reduces the BOM by 4-5 components and adds current-loop protection without external op-amps.
Recommended
Battery Charger Controller
The PIC12F617T-I/MF executes CC/CV charge profiles for small Li-ion or NiMH packs using its 10-bit ADC to measure battery voltage and current-sense resistor voltage. The internal comparator provides redundant over-voltage and over-current protection at hardware speed, while the 16-bit timer drives the PWM charge cycle. At 2.5V minimum operating voltage, the part runs directly from a single-cell Li-ion source. Firmware-resident state machines in 3.5KB flash handle precharge, fast-charge, and termination logic with no external EEPROM needed.
Recommended
Small Brushless DC Motor Control
Sensorless BLDC control on the PIC12F617T-I/MF uses the comparator to detect back-EMF zero-crossings on the floating phase, while the ECCP module drives the 6-step commutation sequence through external MOSFETs. The 20MHz instruction rate delivers commutation timing of approximately 5us per step, sufficient for small fan and pump motors up to a few thousand RPM. Three timer modules handle commutation delay, RPM measurement, and PWM duty, freeing CPU bandwidth for user I/O. The 8-DFN exposed pad dissipates heat from high-frequency switching into the PCB ground plane.
Recommended
Sensor Signal Conditioning
The PIC12F617T-I/MF reads analog sensors (thermistor, photodiode, strain gauge) through its 10-bit ADC and pre-conditions the signal with the on-chip comparator for threshold detection. The 8MHz internal oscillator and 6 I/O enable a complete sensor node with alarm output on a single 8-pin package. Low-power sleep modes drop the supply current for battery-driven IoT edge sensors measuring once per second. With 1.75KB flash, designers can implement digital filtering (moving average) without external components.
Recommended
Consumer Appliance Control
The PIC12F617T-I/MF powers user-interface and timing logic in small home appliances such as coffee makers, humidifiers, and air purifiers. Six I/O pins drive buttons, LEDs, a buzzer, and a triac-trigger MOSFET, while the 16-bit timer counts accurate timing intervals. The integrated analog comparator detects zero-crossing of the AC line for triac phase-angle control in heater regulation. The 8-DFN footprint fits in 10x10 mm boards typical of compact appliances, and -40C to +85C operation handles kitchen and laundry environments.
Recommended
Automotive Accessory Module
The PIC12F617T-I/MF handles body-electronics accessory modules such as LED daytime running light controllers, interior dimmers, and small fan drivers. Its 20MHz CPU and ECCP module deliver precise PWM dimming with hardware auto-shutdown, while the 10-bit ADC reads ambient light sensors and current feedback. The industrial -40C to +85C grade covers cabin environments, and an automotive-grade ordering code (separate suffix) is recommended for under-hood applications. The 8-DFN exposed pad improves thermal dissipation in enclosed lighting fixtures.
Recommended
Recommended Products Summary
Engineering reference data for PIC12F617T-I/MF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12F617-I/MF | PIC12F615T-I/MF | PIC12F617-E/MF | PIC12F1822T-I/MF |
|---|---|---|---|---|---|
| Package | 8-DFN (3x3 mm) | 8-DFN (3x3 mm) - same | 8-DFN (3x3 mm) - same | 8-DFN (3x3 mm) - same | 8-DFN (3x3 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 3.5KB Flash | 3.5KB Flash | 1.75KB Flash (-50%) | 3.5KB Flash | 7KB Flash (+100%) |
| Maximum CPU Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 32 MHz (+60%) |
| Internal Oscillator | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 32 MHz (selectable) |
| Analog Comparator | Yes (1) | Yes (1) | No | Yes (1) | Yes (2) |
| ECCP Module | Yes (1) | Yes (1) | No (basic CCP only) | Yes (1) | Yes (2) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C (extended) | -40C to +85C |
| Approx. Unit Price (qty 1) | $1.85 | $1.85 | $1.45 | $2.10 | $1.95 |
Key Differentiators
- Integrated analog comparator + ECCP for closed-loop control (vs PIC12F615T-I/MF)
- Higher flash density than PIC12F615 family (vs PIC12F615T-I/MF)
- Smaller footprint than SOIC alternatives (vs PIC12F617T-I/SN)
- Migration path to PIC12F1822 family (vs PIC12F1822T-I/MF)
Design Notes
The 8-DFN (3x3 mm) package of the PIC12F617T-I/MF has an exposed thermal pad on the underside that MUST be soldered to a ground-plane copper pad for both electrical reference and thermal dissipation. Microchip's land pattern recommendation is a 1.6x1.6 mm pad with 0.4x0.4 mm thermal vias in a 3x3 array. Skipping the exposed-pad soldering causes temperature-rise issues at 20MHz full-speed operation and may lead to intermittent reset behavior.
Place a 100nF decoupling capacitor as close as possible to VDD (Pin 8) with the ground trace returning directly to the VSS pin (Pin 4). For designs operating at 20MHz above 4.5V supply, add a 10uF bulk capacitor within 5 mm of the device. The MCLR pin (Pin 3) requires a 10k pull-up to VDD for normal operation; adding a 100nF cap on MCLR creates a power-on-reset delay useful for slow-rising supplies.
Several PIC12F617T-I/MF pitfalls: (1) the GP3 pin is input-only - it cannot drive outputs, so use it for MCLR or digital input only; (2) analog comparator inputs share pins with ADC inputs - configure ANSEL to disable digital input buffer on analog pins; (3) the 3.5KB flash includes a boot block, leaving approximately 1.75KB usable for application code; (4) ICSP programming requires specific pin assignments on GP0/GP1 that may conflict with your application I/O - include test points or a programming header.
When using the on-chip comparator for high-speed signals (zero-cross detection, current sense), keep the comparator input traces short and routed away from PWM output traces. The ECCP module's PWM outputs can inject switching noise into adjacent analog traces on the small 8-DFN footprint. Add a ground guard ring around sensitive analog inputs and use the exposed pad as a low-impedance ground return for the comparator reference.
Compliance Information
RoHS compliant per Microchip product page; halogen-free status not explicitly stated in verified data. Industrial grade - automotive AEC-Q100 variants are available under separate ordering codes. The base PIC12F617T-I/MF is recommended for industrial and consumer use, not under-hood automotive.
