PIC16F1709-E/P - 8-Bit 32MHz MCU 14KB Flash | Microchip
MPN: PIC16F1709-E/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.42 | $2.42 |
| 10 | $2.18 | $21.80 |
| 100 | $1.92 | $192.00 |
| 500 | $1.71 | $855.00 |
| 1,000 | $1.53 | $1,530.00 |
PIC16F1709-E/P Overview
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, typically using a Harvard or von Neumann RISC architecture with on-chip Flash, RAM, and a rich peripheral set. PIC microcontrollers from Microchip use a modified Harvard RISC core, executing most instructions in a single instruction cycle (4 clock periods). The PIC16F1709 belongs to the XLP (eXtreme Low Power) family of PIC16F MCUs, sitting within the broader taxonomy: PIC16F1709 -> PIC16F17xx -> PIC16F1xxx family -> PIC16 mid-range -> PIC microcontroller -> 8-bit MCU -> microcontroller -> semiconductor IC.
Key features include on-chip operational amplifiers (Op Amps), Core Independent Peripherals (CLC configurable logic cells, COG complementary output generator, and Zero Cross Detect), Peripheral Pin Select (PPS), and a 10-bit ADC with computation, plus an 8-bit DAC. These integrated analog blocks eliminate the need for external op-amps, comparators, and signal conditioning in many designs. The XLP variant delivers nanoWatt sleep currents suitable for battery-powered applications.
The PIC16F1709-E/P uses a modified Harvard architecture with separate program Flash (14KB) and data EEPROM memories accessible through FSR-based addressing. The 49 instruction set includes hardware multiply and bit-oriented operations. The enhanced mid-range core delivers 200ns instruction execution at 32MHz. The integrated Core Independent Peripherals can operate without CPU intervention, reducing firmware complexity for timing-critical tasks.
Typical applications include LED lighting control with dimming, sensor signal conditioning using the on-chip op amps, battery-powered IoT endpoints, motor control loops leveraging the COG and PWM peripherals, and consumer appliances requiring touch or zero-cross sensing. The combination of low cost, integrated analog, and extreme low power makes the device especially attractive in volume production designs.
Designers should leverage the Peripheral Pin Select feature to remap digital peripherals across the available I/O pins, simplifying PCB routing. Adequate decoupling (100nF plus 10uF bulk) close to VDD and the use of the on-chip op-amp calibration procedure during initialization are recommended for stable analog performance.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet, giving engineers a single reference for part selection, sourcing, and PCB implementation of the PIC16F1709-E/P.
Drop-in alternatives for PIC16F1709-E/P — 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 PIC16F1709-E/P (same form factor and footprint) — differing in ADC, Comparators, Package, Core Independent Peripherals, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1709-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1708-I/P
✅ Drop-In✓ In Stock
$1.18 / Unit
View Datasheet →PIC16F1708-E/SS
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.69 / Unit
View Datasheet →PIC16F1719-E/P
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$2.3 / Unit
View Datasheet →PIC16F1768-I/P
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F1788-I/P
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F1709-E/P Maximum Ratings & Electrical Characteristics
| Core | PIC16 enhanced mid-range 8-bit RISC |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data RAM | 1024 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz (200 ns instruction cycle) |
| Operating Voltage | 2.3 V to 5.5 V |
| I/O Pins | 17 |
| ADC | 10-bit, up to 12 channels, with Computation (ADC2) |
| DAC | 8-bit, 1 channel |
| On-chip Operational Amplifiers | 2 |
| Comparators | 2 (with selectable references) |
| PWM Outputs | Up to 4 (10-bit) |
| Core Independent Peripherals | CLC, COG, Zero Cross Detect |
| Peripheral Pin Select (PPS) | Yes |
| Communication | EUSART, I2C/SPI, 2x MSSP |
| Timers | 4 (8-bit and 16-bit mix) |
| Package | 20-pin PDIP (P), 0.300 inch / 7.62mm |
| Operating Temperature | -40 C to +125 C (E = extended grade) |
| XLP (eXtreme Low Power) | Yes |
| RoHS Status | Compliant |
PIC16F1709-E/P Pin Configuration
| Pin 1 | VDD — Positive supply voltage (2.3V to 5.5V) |
| Pin 2 | RA5 — Bidirectional I/O / analog input / op amp output |
| Pin 3 | RA4 — Bidirectional I/O / analog input / op amp inverting input |
| Pin 4 | RA3/MCLR — Bidirectional I/O / Master Clear (reset, active low) |
| Pin 5 | RC5 — Bidirectional I/O / analog input |
| Pin 6 | RC4 — Bidirectional I/O / analog input |
| Pin 7 | RC3 — Bidirectional I/O / analog input / SPI/I2C clock |
| Pin 8 | RC6 — Bidirectional I/O / EUSART TX |
| Pin 9 | RC7 — Bidirectional I/O / EUSART RX |
| Pin 10 | RB7 — Bidirectional I/O / ICSP programming clock |
| Pin 11 | RB6 — Bidirectional I/O / ICSP programming data |
| Pin 12 | RB5 — Bidirectional I/O / analog input / op amp output |
| Pin 13 | RB4 — Bidirectional I/O / analog input / op amp inverting input |
| Pin 14 | RB3 — Bidirectional I/O / analog input / op amp non-inverting input |
| Pin 15 | RB2 — Bidirectional I/O / analog input |
| Pin 16 | RB1 — Bidirectional I/O / analog input / op amp output |
| Pin 17 | RB0 — Bidirectional I/O / analog input / op amp non-inverting input |
| Pin 18 | VSS — Ground reference |
| Pin 19 | RA2 — Bidirectional I/O / analog input / DAC output / op amp output |
| Pin 20 | RA1 — Bidirectional I/O / analog input / op amp inverting input |
Typical Applications
PIC16F1709-E/P is suitable for 6 applications: LED Lighting Control and Dimming, Battery-Powered IoT Sensor Nodes, Industrial Control Signal Conditioning, BLDC and DC Motor Control, Consumer Appliance User Interfaces, Automotive Body Electronics.
LED Lighting Control and Dimming
The PIC16F1709-E/P is an excellent fit for LED lighting control with analog dimming and zero-cross detection. Its integrated Zero Cross Detect peripheral detects AC line zero crossings without external circuits, while the 10-bit ADC and 8-bit DAC provide precise LED current setpoint control. The COG peripheral generates complementary PWM outputs with programmable dead-band, ideal for high-efficiency LED driver half-bridges. Unlike discrete MCU-plus-op-amp solutions, integrating two op amps on-die cuts BOM cost. The XLP sleep currents under 100nA make battery-powered emergency LED fixtures practical. Place the MCU near the AC input zero-cross optocoupler and add 100nF plus 10uF decoupling on VDD for stable operation across the 2.3V-5.5V supply range.
Recommended
Battery-Powered IoT Sensor Nodes
The PIC16F1709-E/P suits battery-powered IoT endpoints with low duty-cycle sensor sampling. Its XLP features deliver nanoWatt sleep currents below 50nA, while the ADC2 computation block can accumulate samples and trigger threshold interrupts without waking the CPU frequently. The on-chip op amps condition thermocouple or photodiode signals directly, eliminating external analog front-ends. The 1024B RAM comfortably handles short sensor buffers, and 14KB Flash supports over-the-air (OTA) or bootloadable firmware. For best results, use the internal 32kHz LFINTOSC for sleep timebase and enable the ADC2 threshold interrupt on the analog input. Designers targeting this application should budget roughly 1uA average current at 1% duty-cycle wake events.
Recommended
Industrial Control Signal Conditioning
Industrial signal conditioning leverages the PIC16F1709-E/P's on-chip dual op amps for amplifying 4-20mA current-loop or bridge sensor signals before ADC conversion. The PIC16F1709-E/P's extended temperature grade (-40C to +125C) supports factory-floor environments with thermal stress, while the 20-pin PDIP through-hole package simplifies hand-prototyping and field replacement. The Core Independent Peripherals (CLC) handle digital filtering of noisy signals in hardware, offloading firmware overhead. Users should apply op amp calibration from the Microchip AN2428 application note during init, use guard rings around the analog pins, and place the MCU away from switching noise sources. The result is a compact, robust analog front-end that requires fewer external components.
Recommended
BLDC and DC Motor Control
The PIC16F1709-E/P is well suited for small BLDC or brushed DC motor control loops. Its COG (Complementary Output Generator) peripheral produces complementary PWM with programmable dead-band and blanking, eliminating CPU timing overhead for switching FETs. Up to four 10-bit PWM outputs enable multi-phase control. The PIC16F1709-E/P's ADC2 with hardware accumulation provides rotor-current sensing, and the integrated op amps amplify shunt-resistor signals directly. Combined with Peripheral Pin Select (PPS) for flexible signal routing, the part reduces PCB layer count. Designers should size the bulk capacitors on VDD to handle motor inrush currents and use Kelvin connections at the current shunt for accurate measurement. Compared to discrete MCU plus external gate driver ICs, the on-chip COG simplifies BOM.
Recommended
Consumer Appliance User Interfaces
The PIC16F1709-E/P supports consumer appliance user interfaces (UIs) with capacitive touch sensing, LED indicators, and serial communication to a host processor. The two on-chip op amps drive LED current directly, while the 10-bit ADC reads potentiometer or capacitive sense inputs. The CLC peripheral combines button presses in hardware to debounce and latch events without firmware polling. With 14KB Flash, designers can store UI state machines, customizable logo bitmaps, and diagnostic routines in a single chip. Design recommendations include using hardware-based PWM for indicator fading, separating analog and digital VDD traces, and applying the touch-proximity reference design from Microchip AN1478 for reliable capacitive sensing in noisy environments.
Recommended
Automotive Body Electronics
Although not AEC-Q100 qualified, the PIC16F1709-E/P's extended -40C to +125C temperature grade makes it suitable for non-safety automotive body electronics such as interior lighting, seat position memory, or HVAC damper controls. The op amps amplify thermistor or potentiometer signals, the 8-bit DAC drives analog gauge pointers, and the Zero Cross Detect peripheral synchronizes TRIAC-based load switching to AC mains. For under-hood or safety-critical applications, however, designers should select AEC-Q100-qualified automotive-grade parts like PIC16F1709-E/P's automotive sibling. In body-electronics designs, isolate the MCU from relay switching transients with TVS diodes and ensure proper ground referencing for analog sensing accuracy.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1709-E/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1709-I/P | PIC16F1708-I/P | PIC16F1719-E/P | PIC16F1768-I/P | PIC16F1788-I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | PDIP-20 | PDIP-20 (same) | PDIP-20 (same) | PDIP-20 (same) | PDIP-20 (same) | PDIP-20 (same) |
| Operating Temperature | -40 C to +125 C (E grade) | -40 C to +85 C (I grade) | -40 C to +85 C (I grade) | -40 C to +125 C (E grade) | -40 C to +85 C (I grade) | -40 C to +85 C (I grade) |
Key Differentiators
- Integrated dual op amps eliminate external analog front-end (vs PIC16F1614-I/P)
- Core Independent Peripherals offload CPU from critical timing tasks (vs PIC16F1508-I/P)
- Extended temperature grade supports harsh environments (vs PIC16F1709-I/P)
Design Notes
Place a 100nF ceramic decoupling capacitor as close as possible to the VDD pin (pin 1) of the PIC16F1709-E/P, and add a 10uF bulk capacitor on the same VDD node for transient load support. Use a low-ESR ceramic for the bulk capacitor to handle ADC sampling spikes. For battery-powered designs, leverage the XLP sleep mode with the 32kHz LFINTOSC to achieve sub-microamp quiescent current.
Route analog and digital signals in separate zones, with the analog section confined near the analog-capable pins (RA0-RA5, RB0-RB5). Place a ground guard ring around analog input pins to prevent digital switching noise from coupling into sensitive measurements. Keep the MCLR pull-up resistor (typically 10k ohms) close to the pin and ensure the trace to the ICSP header is short to minimize programming interference.
Do not exceed 5.5V on VDD even briefly; transient suppressors are recommended for noisy environments. The MCLR pin is sensitive to fast edges; use the internal MCLR (configuration bit) when possible, or add an external capacitor if MCLR must be exposed. Configure unused I/O pins as outputs with a defined low level to minimize current leakage and CMOS shoot-through.
The PIC16F1709-E/P's ADC accuracy depends on clean reference voltage; bypass the VREF+ pin with 10nF plus 10uF. For high-impedance sensor inputs, use the dedicated op amps in voltage-follower mode to drive the ADC input capacitance, ensuring full ADC settling time. Use ADC2 hardware accumulation to average multiple samples and reject 50/60Hz line noise.
Compliance Information
RoHS and REACH compliant per Microchip product page; lead-free (Pb-free) matte-tin plating; halogen-free per industry standard. Extended temperature grade is not the same as AEC-Q100 automotive qualification. For automotive applications, choose an AEC-Q100-qualified sibling part.
