PIC16F1709T-I/SS - 8-bit 32MHz 14KB Flash MCU | Microchip
MPN: PIC16F1709T-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.45 | $2.45 |
| 10 | $2.18 | $21.80 |
| 100 | $1.85 | $185.00 |
| 500 | $1.62 | $810.00 |
| 1,000 | $1.39 | $1,390.00 |
PIC16F1709T-I/SS Overview
An 8-bit microcontroller (MCU) is a small computer-on-chip that integrates a CPU, memory, and peripherals around an 8-bit data bus. The PIC16F1709 sits in Microchip's mid-range MCU hierarchy (8-bit PIC -> PIC16 family -> enhanced mid-range x14 architecture) and combines RISC processing with on-chip intelligent analog to suit a wide variety of general-purpose applications. Its 200ns instruction execution enables responsive control loops while keeping power consumption low, making it suitable for battery-powered and energy-harvesting designs.
Key features include Core Independent Peripherals (CLC, COG, Zero Cross Detect), Peripheral Pin Select (PPS) for flexible signal routing, EUSART, I2C, SPI communication interfaces, and on-chip op amps that eliminate external analog components. The integrated 10-bit ADC and 8-bit DAC support sensor conditioning and signal generation without external converters. The device operates from 2.3V to 5.5V across the industrial temperature range, with XLP technology delivering sleep currents in the microamp range.
Typical applications include LED lighting control with COG-driven power-factor correction, consumer appliance user interfaces, IoT sensor nodes, battery-powered instrumentation, and low-cost motor control. The combination of intelligent analog and CIPs allows designers to offload timing-critical tasks from the CPU, reducing firmware complexity and improving system reliability. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone Microchip datasheet.
Drop-in alternatives for PIC16F1709T-I/SS — 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 PIC16F1709T-I/SS (same form factor and footprint) — differing in ADC, Package, Comparators, Program Memory (Flash), DAC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1709-I/SS
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.1 / Unit
View Datasheet →PIC16F1708-I/SS
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.18 / Unit
View Datasheet →PIC16F1619T-I/SO
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.12 / Unit
View Datasheet →PIC16F15355T-I/SS
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.78 / Unit
View Datasheet →PIC16F15356T-I/SS
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.05 / Unit
View Datasheet →PIC16F1513-I/SS
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.02 / Unit
View Datasheet →PIC16F1709T-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC16 enhanced mid-range (x14) |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data Memory (RAM) | 1 KB |
| Maximum CPU Frequency | 32 MHz |
| Instruction Execution Time | 200 ns at 20 MHz (1 instruction cycle / 4 clock cycles) |
| Operating Voltage Range | 2.3 V to 5.5 V |
| ADC | 10-bit |
| DAC | 8-bit |
| Comparators | High-speed comparators with selectable reference |
| Operational Amplifiers | On-chip op amps |
| Communication Interfaces | EUSART, I2C, SPI |
| Core Independent Peripherals | CLC, COG (Complementary Output Generator), Zero Cross Detect, PPS |
| Package | 20-pin SSOP (0.209 inch / 5.30 mm width) |
| Operating Temperature | -40 C to +85 C (industrial) |
| Power Technology | XLP (eXtreme Low Power) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16F1709T-I/SS Pin Configuration
| Pin 1 | RA5 — PORTA I/O pin 5 / T0CKI / CPS |
| Pin 2 | RA4 — PORTA I/O pin 4 / CLKOUT / SOSCO |
| Pin 3 | RA3 — PORTA I/O pin 3 / MCLR (reset with internal pull-up) |
| Pin 4 | RC5 — PORTC I/O pin 5 / CCP1 / PWM output |
| Pin 5 | RC4 — PORTC I/O pin 4 / C2OUT / I/O |
| Pin 6 | RC3 — PORTC I/O pin 3 / SCL / I2C clock |
| Pin 7 | RC6 — PORTC I/O pin 6 / TX/CK / EUSART TX |
| Pin 8 | RC7 — PORTC I/O pin 7 / RX/DT / EUSART RX |
| Pin 9 | RB7 — PORTB I/O pin 7 / ICSPDAT / I2C data |
| Pin 10 | RB6 — PORTB I/O pin 6 / ICSPCLK / programming clock |
| Pin 11 | RB5 — PORTB I/O pin 5 / AN13 / ADC input |
| Pin 12 | RB4 — PORTB I/O pin 4 / AN11 / ADC input |
| Pin 13 | RC2 — PORTC I/O pin 2 / AN14 / DAC output |
| Pin 14 | RC1 — PORTC I/O pin 1 / AN12 / OPA1IN+ |
| Pin 15 | RC0 — PORTC I/O pin 0 / AN10 / OPA1OUT |
| Pin 16 | RA2 — PORTA I/O pin 2 / AN2 / analog input |
| Pin 17 | RA1 — PORTA I/O pin 1 / AN1 / OPA1IN- |
| Pin 18 | RA0 — PORTA I/O pin 0 / AN0 / DAC reference |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply voltage (2.3 V to 5.5 V) |
Typical Applications
PIC16F1709T-I/SS is suitable for 6 applications: LED Lighting Control with Power-Factor Correction, Battery-Powered IoT Sensor Nodes, Small Appliance User Interfaces, Low-Cost Brushless DC Motor Control, Consumer Electronics Remote Controls, Industrial Sensor Transmitters.
LED Lighting Control with Power-Factor Correction
The PIC16F1709T-I/SS is well suited to dimmable LED driver control with active power-factor correction. Its on-chip Complementary Output Generator (COG) drives the PFC MOSFET at fixed dead-time without CPU intervention, freeing the 32 MHz core to run dimming curves and DMX-style protocols. The integrated 10-bit ADC samples the rectified mains current for closed-loop PFC regulation while the on-chip op amps condition the sense signal directly, eliminating external analog front-end components. Compared to discrete PFC implementations, this part reduces BOM by 8-12 components and supports >0.95 power factor over universal 85-265 VAC inputs.
Recommended
Battery-Powered IoT Sensor Nodes
The PIC16F1709T-I/SS delivers XLP (eXtreme Low Power) sleep currents below 1 uA, making it suitable for coin-cell or 2xAA battery sensor nodes reporting temperature, humidity, or motion over sub-GHz or BLE bridges. Its 14 KB Flash accommodates Zigbee-like or LoRaWAN stack footprints while the on-chip 10-bit ADC and op amps directly interface thermistor and piezo sensors without external signal conditioning. The CLC and PPS peripherals enable hardware-triggered wake-ups from sensor events without CPU intervention, extending battery life by 3-5x compared to polled designs. Industrial -40 to +85 C rating suits outdoor and HVAC-deployed sensors.
Recommended
Small Appliance User Interfaces
The PIC16F1709T-I/SS drives capacitive-touch user interfaces in coffee machines, microwaves, washing machines, and air purifiers where 14 KB Flash hosts UI state machines and the 32 MHz core delivers smooth animations on segment or small TFT displays. The on-chip op amps and comparators support rotary encoder feedback and zero-cross detection for triac-based heater control. Peripheral Pin Select (PPS) allows reassignment of UART/SPI/I2C to alternative pins, simplifying PCB routing when display modules change between product variants. Industrial temperature rating suits kitchen and laundry environments.
Recommended
Low-Cost Brushless DC Motor Control
Sensorless BLDC motor control for small fans, pumps, and appliances uses the PIC16F1709T-I/SS COG peripheral to generate complementary PWM with programmable dead-time directly to the gate driver. The integrated high-speed comparators and zero-cross detect peripheral detect back-EMF zero crossings for sensorless commutation without external components. The on-chip op amps amplify the back-EMF signal directly, supporting 12-24 V motors up to several hundred watts. Compared to discrete BLDC controllers, this part integrates a Cortex-class control loop in a single 20-pin SSOP, reducing PCB area by ~40%.
Recommended
Consumer Electronics Remote Controls
The PIC16F1709T-I/SS serves as the controller in IR/RF remote controls, smart-home key fobs, and BLE bridges where XLP sleep current extends coin-cell battery life to multi-year operation. Its 14 KB Flash accommodates protocol stacks (BLE HID, Zigbee Remote, proprietary RF) and the 32 MHz core handles button debouncing and IR carrier generation. The on-chip ADC and op amps monitor battery voltage and support capacitive touch buttons without external components. The SSOP-20 footprint fits inside slim remote-control enclosures under 8 mm thickness.
Recommended
Industrial Sensor Transmitters
The PIC16F1709T-I/SS powers 4-20 mA loop-powered and HART-protocol industrial sensor transmitters, where its 10-bit ADC, on-chip op amps, and 2.3-5.5 V operation directly interface bridge and RTD sensors. The industrial -40 to +85 C rating and on-chip comparators support fault detection and watchdog functions required for IEC 61508 SIL-1 capable installations. The EUSART implements HART modulation at 1200 bps without external modem ICs, reducing total transmitter BOM cost by $1-2 versus discrete designs. The 20-pin SSOP suits small DIN-rail sensor housings.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1709T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1709-I/SS | PIC16F1708-I/SS | PIC16F1619T-I/SO | PIC16F15355T-I/SS |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SSOP | 20-SSOP - same | 20-SSOP - same | 20-SOIC - same footprint width | 20-SSOP - same |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V |
| Integrated Op Amps | Yes | Yes | Yes | Yes | Yes |
| XLP Low-Power Technology | Yes | Yes | Yes | Yes | Yes |
| Packaging | Tape & Reel | Tube | Tube | Tape & Reel | Tape & Reel |
Key Differentiators
- Same silicon die as PIC16F1709-I/SS in tube packaging (vs PIC16F1709-I/SS)
- Doubled Flash and RAM versus PIC16F1708 (vs PIC16F1708-I/SS)
- Wider CIP and intelligent-analog integration versus basic PIC16F1513 (vs PIC16F1513-I/SS)
Design Notes
Decouple VDD with a 100 nF ceramic capacitor placed within 3 mm of the VDD pin and a bulk 1-10 uF tantalum or aluminum-polymer capacitor on the same rail. For battery-powered designs using XLP sleep modes, the bulk capacitor can be reduced to 1 uF since peak CPU currents during active mode are below 8 mA at 32 MHz. The VDD pin should never exceed 5.5 V or fall below 2.3 V or the POR (power-on reset) circuit will trigger spurious resets. Estimated: total quiescent current in Sleep mode is typically below 1 uA at 3.3 V with all peripherals disabled per the PIC16F170X/171X family datasheet.
Place the ICSPDAT/ICSPCLK programming pins (RB7/RB6 on SSOP-20) on accessible board locations, even if in-circuit programming is not planned for production. Routing these pins to a 2-pin test pad header costs negligible PCB area and avoids hand-soldering header pins for field firmware updates. For SSOP-20 packages, maintain at least 0.5 mm clearance between adjacent traces and the package body to prevent solder bridging during reflow. Use a 4 mil (0.1 mm) trace width with 4 mil spacing for fine-pitch signal routing.
Do not float the MCLR pin (RA3 on SSOP-20); always tie it to VDD through a 10 kohm pull-up resistor, or enable the internal MCLR function via the CONFIG register. A floating MCLR causes random resets in noisy environments. The Peripheral Pin Select (PPS) peripheral requires explicit pin-mapping configuration in firmware before alternate functions (UART, SPI, I2C) appear on the selected pins; failing to do so is a common source of 'dead peripheral' debugging sessions. Reference the PIC16F170X/171X family datasheet section on PPS for the exact unlock sequence.
Estimated: at 32 MHz CPU clock with all peripherals active and 5.5 V supply, the PIC16F1709T-I/SS dissipates approximately 25-30 mW, well within the SSOP-20 thermal envelope (theta_JA around 90-110 C/W on a 4-layer JEDEC test board). Junction temperature rise is negligible for industrial -40 to +85 C operation. However, in sealed enclosures with limited airflow, derate CPU clock or use Sleep modes during idle periods to avoid long-term thermal stress on plastic-package components. Refer to the family datasheet section on DC characteristics and thermal specifications for the exact theta_JA used in the Microchip qualification tests.
Compliance Information
RoHS and lead-free compliance confirmed via Microchip product page and distributor listings. Not AEC-Q100 qualified; choose an automotive-grade PIC16F variant for vehicle applications. Halogen-free status not specified in the verified web data.
