PIC16F1614-I/ML - 8-bit MCU, 7KB Flash, 32MHz, 16-QFN | Microchip
MPN: PIC16F1614-I/ML β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.62 | $1.62 |
| 10 | $1.47 | $14.70 |
| 100 | $1.18 | $118.00 |
| 500 | $1.02 | $510.00 |
| 1,000 | $0.91 | $910.00 |
PIC16F1614-I/ML Overview
An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit data path, integrating a CPU, non-volatile program memory (Flash), volatile data memory (RAM), and on-chip peripherals such as timers, ADC, communication interfaces, and I/O. The PIC16F1614 belongs to the eXtreme Low Power (XLP) PIC16F family from Microchip, targeting compact, low-power embedded control with motor-control-oriented peripherals such as CCP, 24-bit Signal Measurement Timer (SMT), Zero-Cross Detect, and Configurable Logic Cells (CLC) β features that place this MCU in the broader category of microcontrollers -> embedded controllers -> semiconductors.
The PIC16F1614 integrates a 10-bit ADC with computation (ADC2), two PWM channels, two comparators, two CLCs, and a wide 1.8 V to 5.5 V operating range that supports 2.5 V / 3.3 V / 5 V systems. According to the Microchip product page, the device delivers on-chip features unique to embedded control of small motors and general-purpose applications in 8 / 14 / 20-pin variants, with the I/ML package representing the 14/16-pin QFN option. Peripherals communicate through PPS (Peripheral Pin Select) on most pins, simplifying PCB routing in compact designs.
The core uses Microchip's enhanced mid-range 8-bit CPU with hardware stack and 14-bit instruction word, executing most instructions in a single cycle. Internal oscillator options (HFINTOSC up to 32 MHz with PLL, LFINTOSC 31 kHz) reduce external component count and enable rapid prototyping. The device's XLP features β nanoWatt XLP sleep currents below 50 nA typical, IDLE/DOZE current management, and ultra-low-power wake β make it well-suited to battery-powered nodes that spend most of their life in sleep.
Typical applications include BLDC / brushed-DC small-motor control, LED lighting drivers with zero-cross dimming, fan and pump control, sensor-interface front-ends with on-chip signal conditioning, and general-purpose 8-bit embedded control where footprint, BOM count, and power budget dominate the BOM. The 4x4 mm QFN fits compact PCBs in space-constrained appliances and IoT edge nodes.
When designing with this device, allocate the PPS remap early in firmware planning because most digital peripherals can be routed to multiple pins. Always check that the chosen ADC channel and PWM output do not collide on the same physical pin, and provide a 0.1 Β΅F + bulk decoupling pair adjacent to the VDD pin.
This page synthesizes distributor pricing, drop-in QFN-16 alternatives from Microchip's PIC16 family, application guidance, and practical design notes that are not present on the bare manufacturer product page.
Drop-in alternatives for PIC16F1614-I/ML 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 PIC16F1614-I/ML (same form factor and footprint) β differing in Package, ADC, Core, I/O Pins, Internal Oscillator.
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Request AlternativesPIC16F1614-I/ML Maximum Ratings & Electrical Characteristics
| Product Family | PIC16 (L)F161x |
| Core | PIC 8-bit RISC, enhanced mid-range |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data SRAM | 512 bytes |
| Maximum CPU Clock | 32 MHz |
| Operating Voltage Range | 1.8 V to 5.5 V |
| ADC | 10-bit, with Computation (ADC2) |
| PWM Channels | 2 |
| Comparators | 2 |
| Configurable Logic Cells (CLC) | 2 |
| 24-bit Signal Measurement Timer (SMT) | Yes |
| Timers (total) | 11 |
| Zero-Cross Detect | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Internal Oscillator | HFINTOSC up to 32 MHz with PLL; LFINTOSC 31 kHz |
| Operating Temperature | -40C to +85C (Industrial, I grade) |
| Package | 16-QFN (4x4 mm) with exposed pad |
| Mounting Type | Surface Mount |
| MSL Level | 1 |
| RoHS Status | Compliant |
| Lead-Free / Halogen-Free | Yes (per Microchip product page) |
PIC16F1614-I/ML Pin Configuration
| Pin 1 | RA5 β Bidirectional I/O / ICSP programming data |
| Pin 2 | RA4 β Bidirectional I/O with interrupt-on-change |
| Pin 3 | RA3 β Bidirectional I/O / MCLR reset (input only on this pin) |
| Pin 4 | RC5 β Bidirectional I/O / PPS-remappable peripheral |
| Pin 5 | RC4 β Bidirectional I/O / PPS-remappable peripheral |
| Pin 6 | RC3 β Bidirectional I/O / PPS-remappable peripheral |
| Pin 7 | RC2 β Bidirectional I/O / PPS-remappable peripheral |
| Pin 8 | RC1 β Bidirectional I/O / PPS-remappable peripheral |
| Pin 9 | RC0 β Bidirectional I/O / PPS-remappable peripheral |
| Pin 10 | VSS β Ground reference |
| Pin 11 | VDD β Positive supply (1.8 V to 5.5 V) |
| Pin 12 | RA2 β Bidirectional I/O / analog input / ZCD input |
| Pin 13 | RA1 β Bidirectional I/O / analog input / ICSPCLK |
| Pin 14 | RA0 β Bidirectional I/O / analog input / ICSPDAT |
| Pin 15 | VSS β Ground reference (second VSS pin) |
| Pin 16 | VDD β Positive supply (second VDD pin) |
Typical Applications
PIC16F1614-I/ML is suitable for 6 applications: Small BLDC / Brushed-DC Motor Control, Battery-Powered IoT Sensor Nodes, LED Lighting Drivers with Zero-Cross Dimming, Appliance Control (Fans, Pumps, Valves), Industrial Sensor Interface Front-End, General-Purpose 8-bit Embedded Control.
Small BLDC / Brushed-DC Motor Control
The PIC16F1614-I/ML is purpose-built for small-motor control, integrating hardware blocks that eliminate the firmware complexity typical of general-purpose MCUs in drive applications. Per the Microchip datasheet, the 24-bit Signal Measurement Timer (SMT) measures Hall-sensor timing and back-EMF zero-crossing events with sub-microsecond resolution, while the on-chip Zero-Cross Detect (ZCD) module synchronizes TRIAC dimming directly to the AC mains without external optocouplers. Two Configurable Logic Cells (CLC) implement sensorless commutation lookup logic in hardware, freeing the CPU for the outer torque/speed loop. The two PWMs drive complementary half-bridges, and the 10-bit ADC with Computation (ADC2) performs oversampling and averaging of shunt currents without CPU intervention. In a 24 V / 1 A BLDC fan driver, this integration reduces external component count by 30-40% compared to a discrete MCU + external ZCD + timer approach.
Recommended
Battery-Powered IoT Sensor Nodes
The PIC16F1614-I/ML's nanoWatt XLP architecture targets coin-cell and 2x AA-powered wireless sensor nodes where sleep current dominates battery life. According to the Microchip PIC16F161x datasheet, sleep current is below 50 nA typical with RAM retention, while active current is approximately 1.8 mA at 4 MHz / 3.3 V. The CLC block can wake the CPU from sleep on a sensor-triggered edge without an external interrupt controller, and the LFINTOSC 31 kHz keeps the RTC tick running under 1 Β΅A total. PPS allows the SPI/I2C sensor and the radio module to share pins across power states. With a typical duty cycle of 1% (1 wake per second, 10 ms active), a CR2032 coin cell can power the node for 5+ years.
Recommended
LED Lighting Drivers with Zero-Cross Dimming
The PIC16F1614-I/ML's on-chip Zero-Cross Detect (ZCD) module eliminates the optocoupler + external ZCD circuit typical in AC-dimmable LED drivers. Per the Microchip product page, the ZCD pin senses the AC mains zero-cross directly through a series resistor, generating an interrupt for phase-angle TRIAC control. Two PWMs drive the LED current regulator in constant-current mode, while the 10-bit ADC with ADC2 monitors the LED string voltage and current for closed-loop brightness control. The 32 MHz CPU handles DALI or 0-10 V dimming protocols in firmware without external controllers. The 16-QFN (4x4 mm) package enables the entire driver to fit inside an Edison or BR30 bulb base.
Recommended
Appliance Control (Fans, Pumps, Valves)
The PIC16F1614-I/ML's mix of 11 timers, 2 comparators, 2 PWMs, and 2 CLCs covers the full control surface of small home appliances β fans, water pumps, solenoid valves β without external glue logic. Per the Microchip datasheet, the analog comparators can directly trigger PWM shutdown on overcurrent events with sub-microsecond latency, critical for protecting brushed-DC motor windings. The 10-bit ADC2 performs background averaging of supply voltage and temperature without CPU load, enabling adaptive fan-speed curves. PPS remaps the keypad scan and seven-segment display drive to free pins, simplifying PCB layout in compact user-interface panels.
Recommended
Industrial Sensor Interface Front-End
The PIC16F1614-I/ML functions as a 4-20 mA loop-powered or RS-485 sensor interface front-end, digitizing analog signals with the on-chip 10-bit ADC and communicating via UART/SPI to a host controller. Per the Microchip datasheet, the ADC2's hardware averaging and threshold comparison can wake the host only when the reading crosses a programmed window, drastically reducing bus traffic. The 2 CLCs implement glitch filters on digital inputs in hardware, suppressing debounce on mechanical switch inputs without CPU cycles. The wide 1.8 V to 5.5 V supply range accepts power directly from a 24 V industrial rail after a 5 V LDO, simplifying the analog front-end design.
Recommended
General-Purpose 8-bit Embedded Control
For non-motor control applications where code size, GPIO count, and low power dominate the BOM, the PIC16F1614-I/ML serves as a versatile general-purpose 8-bit MCU alternative to the PIC16F1509-I/ML. The PIC16F161x family adds CLC, SMT, and ZCD peripherals that the PIC16F1509 lacks, while retaining the same 16-QFN (4x4 mm) footprint. According to the Microchip product page, this makes it ideal for consumer-electronic user-interface boards, simple display controllers, and battery-powered remote controls. The 32 MHz CPU delivers 8 MIPS, sufficient for state machines, small protocol stacks (DMX, IR, NEC, RC5), and modest UI rendering on seven-segment or character LCDs.
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Recommended Products Summary
Engineering reference data for PIC16F1614-I/ML β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1613-I/ML | PIC16F1614-E/ML | PIC16F1509-I/ML | PIC16F1516-I/ML |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 16-QFN (4x4 mm) | 16-QFN (4x4 mm) - same | 16-QFN (4x4 mm) - same | 16-QFN (4x4 mm) - same | 16-QFN (4x4 mm) - same |
| Flash Memory | 7 KB | 4 KB (-43%) | 7 KB (same) | 7.75 KB (+11%) | 7.1 KB (+1%) |
| SRAM | 512 B | 256 B (-50%) | 512 B (same) | 512 B (same) | 512 B (same) |
| Maximum CPU Clock | 32 MHz | 32 MHz (same) | 32 MHz (same) | 20 MHz (-38%) | 20 MHz (-38%) |
| 24-bit SMT | Yes | Yes | Yes | No | No |
| Configurable Logic Cells (CLC) | 2 | 2 | 2 | 0 | 2 |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +125C (Extended) | -40C to +85C | -40C to +85C |
| ADC2 (Computation) | Yes (10-bit) | Yes (10-bit) | Yes (10-bit) | No (basic 10-bit) | Yes (10-bit) |
Key Differentiators
- 24-bit Signal Measurement Timer (SMT) on-chip (vs PIC16F1509-I/ML)
- Zero-Cross Detect (ZCD) for AC-line dimming (vs PIC16F1516-I/ML)
- 2 Configurable Logic Cells (CLC) for hardware glue logic (vs PIC16F1509-I/ML)
- ADC2 with Computation (oversampling, averaging, threshold compare) (vs PIC16F1509-I/ML)
Design Notes
Place a 0.1 Β΅F ceramic decoupling capacitor as close as physically possible to each VDD pin (pins 11 and 16 on the 16-QFN), with a 10 Β΅F bulk capacitor on the VDD rail near the MCU. Per the Microchip PIC16F161x datasheet, the second VDD/VSS pair on the QFN exposed-pad variants must be connected; the exposed thermal pad itself must be soldered to a VSS copper pour to meet thermal and electrical specifications. Do not rely on the internal LFINTOSC as the only clock source if the application requires tight timing β it drifts with voltage and temperature.
The 16-QFN (4x4 mm) package's exposed thermal pad must be soldered to a PCB VSS copper pour of at least 25 mmΒ² (per JEDEC EIA/JESD51 measurement conditions) to meet the datasheet's thermal resistance of approximately 40 C/W. In typical 3.3 V / 32 MHz operation with all peripherals active, the device dissipates under 25 mW and self-heating is negligible, but at extended temperature (-E grade, +125C) derate peripheral count to keep junction below 150C.
Because most digital peripherals can be remapped via PPS (Peripheral Pin Select), route the PCB with a logical pad numbering that does not assume fixed peripheral-to-pin mapping β pin choice is finalized in the MCC (MPLAB Code Configurator) project. The 4x4 mm QFN has 0.5 mm pitch; use NSMD (non-solder mask defined) pads with at least 8 mil (0.2 mm) paste mask opening for reliable reflow. Per the Microchip QFN landing-pattern guideline (AN1252), the thermal-pad via array should be 4-6 vias of 0.3 mm drill on a 1.0 mm pitch, tented or filled to prevent solder wicking.
Estimated: at 32 MHz CPU clock with 3.3 V supply and all peripherals active, the PIC16F1614-I/ML draws approximately 4 mA, rising to 6 mA with ADC2 + SMT continuously sampling. A common design pitfall is configuring the SMT in pulse-width measurement mode without checking the FOSC source β the SMT expects a synchronous clock and will misread on async LFINTOSC operation. Per the Microchip datasheet, the MCLR pin (RA3) must be pulled high through a 10 kΞ© resistor for normal operation; floating MCLR causes intermittent reset events. Also note that the PIC16F1614 is not pin-compatible with the older PIC16F684 (different PPS assignments).
Route the ICSP programming pins (RA0/ICSPDAT, RA1/ICSPCLK, RA3/MCLR) so they remain accessible β either via test pads or a 2x3 0.1 inch header β for in-circuit programming and debug using PICkit 4 or MPLAB ICD 4. The ZCD pin (RA2 by default) should be routed with a guard trace if it connects directly to the AC mains through a series resistor; keep the trace length under 10 mm and avoid running parallel to switching traces to minimize capacitive coupling.
Compliance Information
RoHS and lead-free status per Microchip product page; AEC-Q100 qualification not listed for PIC16F1614-I/ML (industrial grade). For automotive applications, refer to Microchip's automotive-grade PIC16F1xxx family separately.