PIC16F1705-E/ML - 8-bit MCU, 32MHz, 14KB Flash, 16-QFN | Microchip
MPN: PIC16F1705-E/ML β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.92 | $1.92 |
| 10 | $1.73 | $17.30 |
| 100 | $1.54 | $154.00 |
| 500 | $1.34 | $670.00 |
| 1,000 | $1.15 | $1,150.00 |
PIC16F1705-E/ML Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile data memory (RAM), and a rich set of peripheral interfaces. Within the broader taxonomy, the PIC16F1705 belongs to the 8-bit MCU category (PIC16 family -> 8-bit PIC -> PIC microcontroller -> MCU -> microcontroller -> embedded processor -> semiconductor). Compared with 32-bit ARM Cortex-M parts, an 8-bit MCU consumes far less power, costs less, and delivers deterministic interrupt latency suitable for sensor nodes, human-interface devices, and battery-powered edge sensing.
Key features of the PIC16F1705 include eXtreme Low Power (XLP) technology with deep-sleep currents in the nanoampere range, 12-bit ADC with computation, two operational amplifiers usable as rail-to-rail input stages, an 8-bit DAC, a 5-bit DAC, two comparators, a Zero-Cross Detect (ZCD) module, Configurable Logic Cell (CLC) blocks, Complementary Output Generator (COG), Numerically Controlled Oscillator (NCO), EUSART, I2C/SPI, CCP and PWM modules, and up to 12 I/O pins. The 32MHz internal oscillator eliminates the need for an external crystal in many designs.
The PIC16F1705 uses a Harvard-architecture RISC core with a 14-bit instruction word and a single-cycle ALU, delivering ~32MIPS throughput. PPS allows remapping of digital peripherals to nearly any I/O pin, which simplifies PCB layout and reduces the need for trace-crossing rework. The on-chip op amps - a rarity in this package class - enable single-chip signal conditioning for sensor interfaces.
Typical applications include IoT sensor nodes, battery-powered wireless sensor transmitters, LED lighting controllers with smooth dimming (ZCD + COG), small motor control loops, smoke/CO detectors, remote controls, capacitive-touch human-interface devices, and general-purpose logic-replacement designs. The extended -40C to +125C temperature range and AEC-Q100-style robustness make it suitable for industrial and harsh-environment deployments.
When designing with this MCU, allocate at least one decoupling capacitor (100nF X7R) per VDD pin and a 10uF bulk capacitor near the IC. The ICSP/ICD pins (RB6/RA0 and RB7/RA1 equivalents on this device) must be brought out to a programming header or Tag-Connect footprint to support in-circuit debugging and field firmware updates.
This page synthesizes distributor pricing, parametric drop-in alternatives from Microchip's pin-compatibility chart, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16F1705-E/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 PIC16F1705-E/ML (same form factor and footprint) β differing in ADC, PWM / CCP, Package, Program Memory (Flash), RoHS Status.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16F1705-I/ML
β Drop-Inπ Reference alternative (not in catalog)
PIC16LF1705-I/ML
β Drop-Inπ Reference alternative (not in catalog)
PIC16F18325-I/ML
β Drop-Inπ Reference alternative (not in catalog)
PIC16F1614-E/P
β Drop-Inβ In Stock
$1.08 / Unit
View Datasheet βPIC16F1705-E/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC16 enhanced mid-range |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data RAM | 1 KB |
| Maximum CPU Frequency | 32 MHz |
| Operating Voltage (VDD) | 1.8 V to 5.5 V |
| I/O Pins | 12 |
| ADC | 10-bit, up to 8 channels |
| DAC | 8-bit and 5-bit |
| Operational Amplifiers | 2 on-chip op amps |
| Comparators | 2 high-speed comparators |
| Zero-Cross Detect | Yes (ZCD) |
| Core Independent Peripherals | CLC, COG, NCO, ZCD |
| Peripheral Pin Select (PPS) | Yes |
| Communication Interfaces | EUSART, I2C, SPI |
| PWM / CCP | Yes |
| Package | 16-pin QFN (4x4 mm), ML designation |
| Operating Temperature | -40 C to +125 C (E suffix = Extended) |
| eXtreme Low Power (XLP) | Yes |
| RoHS Status | Compliant |
PIC16F1705-E/ML Pin Configuration
| Pin 1 | RA5 β Bidirectional I/O with PPS; ICSPDAT programming data |
| Pin 2 | RA4 β Bidirectional I/O with PPS; CLKIN optional external clock |
| Pin 3 | RA3 β Bidirectional I/O; MCLR reset input (weak pull-up enabled by configuration) |
| Pin 4 | RC5 β Bidirectional I/O with PPS |
| Pin 5 | RC4 β Bidirectional I/O with PPS |
| Pin 6 | RC3 β Bidirectional I/O with PPS; SCL/I2C capable |
| Pin 7 | RC2 β Bidirectional I/O with PPS |
| Pin 8 | RC1 β Bidirectional I/O with PPS; CCP1 capable |
| Pin 9 | RC0 β Bidirectional I/O with PPS; INT0 capable |
| Pin 10 | RA2 β Bidirectional I/O with PPS; analog-capable |
| Pin 11 | RA1 β Bidirectional I/O with PPS; ICSCLK programming clock |
| Pin 12 | RA0 β Bidirectional I/O with PPS; analog-capable |
| Pin 13 | RB7 β Bidirectional I/O with PPS |
| Pin 14 | RB6 β Bidirectional I/O with PPS; ICD communication |
| Pin 15 | VDD β Positive supply voltage (1.8V to 5.5V) |
| Pin 16 | VSS β Ground |
Typical Applications
PIC16F1705-E/ML is suitable for 6 applications: IoT Wireless Sensor Node, Battery-Powered Smoke or CO Detector, AC Mains Zero-Cross TRIAC Dimmer / LED Controller, Capacitive Touch Keypad with Haptic Feedback, Small BLDC / DC Motor Control, Industrial Sensor Transmitter (4-20mA Loop).
IoT Wireless Sensor Node
The PIC16F1705-E/ML fits IoT sensor nodes because its eXtreme Low Power (XLP) sleep current in the nanoampere range and 32MHz HFINTOSC eliminate the need for an external crystal, shrinking the BOM. With 14KB Flash it comfortably holds an application plus a small wireless stack driver; the two on-chip op amps condition sensor signals (thermocouple, current shunt, photo-diode) directly, replacing two external analog ICs. PPS allows the EUSART or I2C interface to map to any pin, simplifying PCB routing for a 16-QFN layout.
Recommended
Battery-Powered Smoke or CO Detector
The PIC16F1705-E/ML is well-suited to smoke/CO detectors thanks to its <50 nA deep-sleep current, on-chip op amps for the photo-electric chamber signal conditioning, and the Zero-Cross Detect (ZCD) module that synchronizes a piezo sounder driver to the AC mains zero crossings to minimize EMI. The 10-bit ADC with computation performs peak/average measurements on the sensor signal, while the CLC blocks handle timed piezo chirping without CPU load - extending the 9V battery life to >10 years.
Recommended
AC Mains Zero-Cross TRIAC Dimmer / LED Controller
In an AC mains TRIAC dimmer, the PIC16F1705-E/ML uses its on-chip Zero-Cross Detect (ZCD) to detect AC line crossings without a dedicated optocoupler, and the Complementary Output Generator (COG) produces anti-phase gate pulses with hardware dead-time, preventing shoot-through. The on-chip op amp reads the wall-plate potentiometer, while the 8-bit DAC sets the dimming curve. The extended -40C to +125C range handles the heat of a wall-mounted junction box.
Recommended
Capacitive Touch Keypad with Haptic Feedback
The PIC16F1705-E/ML drives capacitive touch electrodes via the on-chip comparators and CLC blocks, with the COG generating complementary haptic-driver PWM. PPS maps each touch sensor to any I/O pin, enabling flexible PCB layout for irregular key shapes. With 1KB RAM the MCU handles up to 8 touches plus a debounce and gesture state machine, all while the XLP sleep mode keeps idle current below 1uA for battery-powered remotes.
Recommended
Small BLDC / DC Motor Control
For small fans, pumps, or stepper-sine drivers, the PIC16F1705-E/ML provides the COG module for hardware anti-emf PWM generation and the NCO for fine frequency synthesis. The 32MHz clock drives an 8-MIPS control loop, and the on-chip op amps condition back-EMF feedback. The 16-QFN package fits inside the motor housing, and the extended temperature range supports under-the-hood automotive applications.
Recommended
Industrial Sensor Transmitter (4-20mA Loop)
The PIC16F1705-E/ML serves as the digital core of a 4-20mA loop-powered transmitter: one op-amp builds the current-sense amplifier, the other drives the loop-current-setting transistor. The 10-bit ADC reads the sensor (RTD, strain gauge, pressure cell), and the 8-bit DAC plus PWM smooth the loop output. XLP deep sleep allows the device to operate on the 3.6mA loop budget, and the -40C to +125C rating covers outdoor industrial installations.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1705-E/ML β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1705-I/ML | PIC16LF1705-I/ML | PIC16F18325-I/ML |
|---|---|---|---|---|
| Brand | 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 |
| Flash Memory | 14 KB | 14 KB | 14 KB | 16 KB |
| RAM | 1 KB | 1 KB | 1 KB | 2 KB |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 5.5 V |
| Temperature Range | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| On-chip Op Amps | 2 | 2 | 2 | 0 |
| ZCD / CLC / COG / NCO | Yes (all four) | Yes (all four) | Yes (all four) | DSM/ANGLE only (no COG) |
Key Differentiators
- On-chip op amps and DAC eliminate external analog ICs (vs PIC16F18325-I/ML)
- Extended -40C to +125C temperature range for harsh environments (vs PIC16F1705-I/ML)
- 14 KB Flash vs 7 KB on older PIC16F1824 (vs PIC16LF1824-E/ML)
Design Notes
Estimated: At 32MHz full activity the PIC16F1705-E/ML core draws ~5 mA at 5V; in deep sleep (XLP) it drops below 50 nA. Place a 100nF X7R decoupling capacitor within 3 mm of the VDD pin (pin 15) and a 10uF bulk tantalum or ceramic on the same VDD trace. If the application uses Sleep+Watchdog, do not share the bulk capacitor with high-current loads - a separate analog rail (AVDD) buffer is not needed on this part since there is no dedicated AVDD pin, but the VDD trace should remain low-noise.
The 16-QFN package exposes a center thermal pad that is the primary VSS connection. Solder paste coverage must cover this pad with multiple small apertures (or one large filled aperture with thermal relief cuts). Stitching vias through the pad to the internal ground plane reduce both thermal resistance and ground bounce. PPS allows the digital peripherals to be re-routed, so place the ICSP/ICD pins (RA5/RA1) on a header or Tag-Connect footprint even if the firmware does not use them - this enables in-circuit debugging and field firmware updates.
Do not leave ICSPCLK/ICSPDAT floating during normal operation - weak pull-ups on RA1/RA5 are configurable and an external 10k pull-up on MCLR/RA3 is required if the internal MCLR pull-up is disabled. Configuration bits must be set BEFORE the first instruction executes; a wrong CONFIG can brick the device until a programmer reapplies correct values. When migrating from PIC16F1705-I/ML to PIC16F1705-E/ML, ensure your firmware does not depend on industrial-temp ADC behavior - the extended temperature range may require software re-calibration of internal voltage references.
The PPS module lets you re-route digital peripherals but cannot remap analog channels - analog-capable pins (RA0, RA1, RA2, RA3, RC0-RG1 family variants) are fixed to the ADC, DAC, op-amp and comparator blocks. If the PCB layout places a noisy digital signal near an analog-capable pin, add a ground guard ring around the analog trace. The HFINTOSC accuracy is +/-2% typical over voltage/temperature; for UART communication above 57600 baud, switch to the external 16MHz crystal mode with the PLL engaged for tighter timing.
Compliance Information
RoHS and REACH compliant per Microchip product page. Standard -E/ML is not AEC-Q100 qualified; PIC16F1705-E/MLVAO is the automotive-grade ordering code. Halogen-free per Microchip environmental compliance documentation.
