PIC16F1614-I/ST - 8-Bit MCU, 7KB Flash, 32MHz, TSSOP-14 | Microchip
MPN: PIC16F1614-I/ST β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.95 | $1.95 |
| 10 | $1.74 | $17.40 |
| 100 | $1.48 | $148.00 |
| 500 | $1.28 | $640.00 |
| 1,000 | $1.12 | $1,120.00 |
PIC16F1614-I/ST Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash/ROM), data memory (RAM), and integrated peripherals such as timers, ADCs, and communication interfaces. Within the broader taxonomy, the PIC16F1614 belongs to the 8-bit microcontroller class (PIC16 -> 8-bit PIC MCU -> microcontroller -> embedded processor -> semiconductor). It uses Microchip's enhanced mid-range core with a 14-bit instruction word, balancing code density with deterministic execution for real-time control.
Key features include 7KB self-programmable Flash, 10-bit ADC with internal voltage reference, multiple PWM/CCP channels for motor or LED control, a 24-bit SMT for precise time-of-flight or frequency measurements, Zero-Cross Detect for AC-line sensing, and on-chip logic/CLC peripherals for hardware customization. The XLP (eXtreme Low Power) designation indicates sleep currents in the nanoampere range, suitable for battery-powered designs.
The architecture uses a Harvard-style bus with separate program and data paths, a 16-level hardware stack, and direct LED/LCD drive capability on selected pins. Operating from 2.5V to 5.5V with industrial-grade thermal tolerance, it supports common sensor and actuator interfaces without external glue logic.
Typical applications include small brushed-DC and stepper motor control, ceiling-fan and HVAC control, LED lighting drivers, sensor signal conditioning, and general-purpose embedded control. Compared with discrete logic designs, the PIC16F1614 reduces BOM count by integrating ADC, PWM, and commutation timers on a single die.
When designing with this MCU, ensure adequate decoupling (100nF + bulk) on VDD, follow the recommended PCB layout for the TSSOP-14 thermal pad (if exposed), and program the CONFIG words to match the chosen oscillator, watchdog, and code-protect requirements. The ICSP/PGD-PGC pins must remain accessible for in-circuit programming.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for PIC16F1614-I/ST 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/ST (same form factor and footprint) β differing in Package, Program Memory (Flash), Core, Timers, ADC.
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Request AlternativesPIC16F1614-I/ST Maximum Ratings & Electrical Characteristics
| Device Core | PIC16 (8-bit) |
| Architecture | Enhanced Mid-Range, 14-bit instruction word |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| RAM | 512 bytes |
| Maximum CPU Frequency | 32 MHz |
| Operating Voltage Range | 2.5 V to 5.5 V |
| ADC | 10-bit |
| 24-bit Signal Measurement Timer (SMT) | Yes |
| Zero-Cross Detect | Yes |
| Math Accelerator | Yes |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 14-pin TSSOP |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| XLP (eXtreme Low Power) | Yes |
PIC16F1614-I/ST Pin Configuration
| Pin 1 | VDD β Positive supply voltage (2.5V to 5.5V) |
| Pin 2 | RA5 β GPIO/AN4/CPS6/CCP2/TX/CK (multi-function) |
| Pin 3 | RA4 β GPIO/AN3/CPS5/CCP1/SRX/DT |
| Pin 4 | RA3/MCLR/VPP β Master Clear (reset) / ICSP programming voltage |
| Pin 5 | RC5 β GPIO/AN7/CPS11/PWM3 |
| Pin 6 | RC4 β GPIO/AN6/CPS10/PWM2 |
| Pin 7 | RC3 β GPIO/AN5/CPS9/SMT1SIG |
| Pin 8 | RC2 β GPIO/AN2/CPS8/PWM1/SMT1WIN |
| Pin 9 | RC1 β GPIO/AN1/CPS7/ICSPCLK/CCP2 |
| Pin 10 | RC0 β GPIO/AN0/CPS6/ICSPDAT/CCP1 |
| Pin 11 | RA2 β GPIO/AN2/ZCD/T0CKI/CWG1FLT |
| Pin 12 | RA1 β GPIO/AN1/ZCD2/ICSPCLK/INT |
| Pin 13 | RA0 β GPIO/AN0/ICSPDAT/INT |
| Pin 14 | VSS β Ground reference |
Typical Applications
PIC16F1614-I/ST is suitable for 6 applications: Small Brushed-DC Motor Control, Ceiling Fan and HVAC Line-Voltage Control, LED Lighting Drivers and Dimming, Sensor Signal Conditioning and Bridge Measurement, Battery-Powered IoT Sensor Nodes, General-Purpose Embedded Control (Appliance/User Interface).
Small Brushed-DC Motor Control
The PIC16F1614-I/ST fits brushed-DC motor control because its integrated CCP/PWM channels, 10-bit ADC, and Math Accelerator deliver closed-loop speed/torque regulation without external DSP. According to the Microchip product family datasheet, the 24-bit SMT measures back-EMF period with sub-microsecond resolution, enabling RPM feedback in the tens-of-Hz to tens-of-kHz range. The MCU drives a complementary half-bridge through its PWM outputs and samples motor current via the ADC, all on the TSSOP-14 footprint. Compared with discrete analog controllers, the integration reduces BOM count by approximately 30-40% and allows firmware-tunable acceleration profiles.
Recommended
Ceiling Fan and HVAC Line-Voltage Control
The PIC16F1614-I/ST is well matched for ceiling-fan and HVAC line-voltage control because the integrated Zero-Cross Detect (ZCD) peripheral synchronizes TRIAC firing to the AC mains zero-crossing point, minimizing EMI and inrush current. With the 32MHz CPU driving 8MIPS throughput, the MCU executes PI speed loops while simultaneously servicing the ZCD interrupt and UART command interface. The industrial -40C to +85C temperature grade handles enclosed fan-housing thermal stress. The TSSOP-14 footprint and 2.5V-5.5V range simplify designs that derive logic power directly from the AC line via a capacitive dropper.
Recommended
LED Lighting Drivers and Dimming
The PIC16F1614-I/ST supports constant-current LED drivers and analog/PWM dimming thanks to its CCP/PWM channels and 10-bit ADC for closed-loop current regulation. Its XLP nanoamp sleep current makes the part attractive for standby power budgets below 100mW in commercial lighting. The 7KB Flash accommodates warm-dim curves, DALI-like protocols, or DMX-style address handling in retrofit luminaires. The TSSOP-14 surface-mount package is compatible with high-density driver PCBs used in panel lights and downlights.
Recommended
Sensor Signal Conditioning and Bridge Measurement
The PIC16F1614-I/ST is suited to bridge sensor signal conditioning because its 10-bit ADC, internal voltage reference, and CLC peripherals implement programmable-gain amplification and filtering in firmware rather than analog ICs. The 24-bit SMT can be repurposed to time thermocouple or RTD pulse widths from analog front-ends. With 512B of RAM and 7KB Flash, it handles averaging algorithms, linearization, and UART/I2C communication to a host controller. The TSSOP-14 industrial-temperature rating allows deployment near process equipment.
Recommended
Battery-Powered IoT Sensor Nodes
The PIC16F1614-I/ST targets battery-powered IoT sensor nodes thanks to its XLP nanoamp sleep modes that extend coin-cell or 2xAA runtime to multiple years. The MCU wakes periodically to read sensors via ADC or I2C, transmits through an attached radio module, and returns to sleep, all within the 7KB Flash budget. The 2.5V minimum operating voltage supports two alkaline or NiMH cells without boost conversion. Compared with 32-bit Cortex-M0 alternatives, the 8-bit PIC16F1614 typically achieves 30-50% lower active current at equivalent throughput for sensor-sampling workloads.
Recommended
General-Purpose Embedded Control (Appliance/User Interface)
The PIC16F1614-I/ST handles general-purpose appliance control: washing-machine user interfaces, kitchen-appliance timers, or small white-goods controllers. Its 32MHz speed, 10-bit ADC, and CCP/PWM channels drive keypads, seven-segment/LCD displays, and solenoid/relay actuators directly from the TSSOP-14 pins. The 7KB Flash supports state-machine firmware with fault diagnostics and EEPROM emulation. Industrial -40C to +85C temperature tolerance enables deployment in unheated enclosures.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1614-I/ST β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1614T-I/ST | PIC16F1613-I/ST | PIC16F1574-I/ST | PIC16F1503-I/ST | PIC16F15224-I/ST | PIC16F15225-I/ST |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TSSOP-14 | TSSOP-14 - same | TSSOP-14 - same | TSSOP-14 - same | TSSOP-14 - same | TSSOP-14 - same | TSSOP-14 - same |
| Program Memory (Flash) | 7 KB | 7 KB | 7 KB | 14 KB | 3.5 KB | 7 KB | 7 KB |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 16 MHz | 32 MHz | 32 MHz |
| RAM | 512 B | 512 B | 512 B | 1024 B | 256 B | 512 B | 512 B |
| ADC | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
| 24-bit Signal Measurement Timer (SMT) | Yes | Yes | No | No | No | No | No |
| Zero-Cross Detect (ZCD) | Yes | Yes | No | No | No | No | No |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Integrated 24-bit SMT and Zero-Cross Detect peripherals for motor/AC-line control (vs PIC16F1613-I/ST)
- Larger Flash than PIC16F1503 with same TSSOP-14 footprint (vs PIC16F1503-I/ST)
- Math Accelerator and CLC peripherals for hardware-customized logic (vs PIC16F1574-I/ST)
Design Notes
Place a 100nF ceramic decoupling capacitor as close as possible to the VDD pin (pin 1) and a bulk capacitor (>=1uF) on the same net. For battery applications using the XLP sleep modes, ensure the MCLR pull-up is selected (internal) or omitted during sleep to eliminate the typical 5-50uA continuous MCLR pull-up current that erodes low-power budgets.
For the TSSOP-14 package, route ICSPCLK (RC1) and ICSPDAT (RC0) to dedicated test pads or header pins for in-circuit programming access. Keep analog traces (ANx) short and away from PWM outputs to minimize ADC switching-noise coupling. A ground plane under the MCU with vias stitching the perimeter is recommended for EMI-sensitive applications like fan/HVAC controls.
Do not assume the internal HFINTOSC is accurate enough for UART or PWM timing without calibration; Microchip provides OSCTUNE register tuning to compensate across temperature. When migrating firmware from PIC16F1613, verify CONFIG word bits for the new 24-bit SMT and ZCD peripherals - default CONFIG on the 1613 leaves these modules powered off.
When using the Zero-Cross Detect peripheral for AC-line applications, place a current-limiting resistor (typically 1Mohm) in series with the ZCD pin and add a clamping network per the datasheet AC-line interface figure. The ZCD input is rated only for low-voltage signals and will be damaged by direct mains connection without protection. Estimated: ZCD input max current is approximately 1mA per the Microchip product datasheet.
Compliance Information
RoHS and lead-free per Microchip product page; not AEC-Q100 qualified (industrial grade only).
