PIC16F1708T-I/ML - 8-bit 32MHz MCU 7KB Flash | Microchip
MPN: PIC16F1708T-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.25 | $12.50 |
| 100 | $1.02 | $102.00 |
| 500 | $0.85 | $425.00 |
| 1,000 | $0.68 | $680.00 |
| 3,300 | $0.548 | $1,808.40 |
PIC16F1708T-I/ML Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and a rich set of digital and analog peripherals. Within the broader taxonomy of semiconductors, an MCU sits under microcontrollers → embedded processors → logic devices. The PIC16F1708 belongs specifically to the PIC16 enhanced mid-range family (XLP — eXtreme Low Power), which targets battery-powered and energy-harvesting applications through nanoWatt XLP technology and multiple low-power sleep modes.
Key features of the PIC16F1708 include Peripheral Pin Select (PPS), which allows on-the-fly remapping of digital peripheral I/O to physical pins for maximum PCB layout flexibility, and eXtreme Low Power (XLP) operation with sleep currents below 50 nA typical. The device supports 1.8V to 5.5V operation across an industrial -40C to +85C temperature range, making it suitable for both 3.3V and 5V designs. The on-chip op amps, comparators, and DAC reduce external component count in mixed-signal sensor-conditioning circuits.
Architecturally, the PIC16F1708 uses a 14-bit instruction word with a 200 ns instruction cycle at 32 MHz, providing deterministic real-time performance well-suited for closed-loop control. The Harvard architecture separates program and data buses for predictable interrupt latency. Integrated Core Independent Peripherals such as the Configurable Logic Cell (CLC), Complementary Output Generator (COG), and Zero-Cross Detect (ZCD) execute state machines in hardware, offloading the CPU.
Typical applications include low-power IoT sensor nodes, battery-powered instrumentation, consumer appliance control, LED lighting drivers, and general-purpose mixed-signal embedded designs where small pin count, intelligent analog integration, and ultra-low sleep current are required. The 20-pin QFN is compact (4x4 mm) for space-constrained PCBs.
When designing with this part, validate that the chosen programming/debug tool (PICkit 3, PICkit 4, MPLAB SNAP, ICD 4) supports the device, and select the matching MPLAB X IDE device family pack. Note that the trailing 'T' in the part number denotes Tape and Reel packaging, while the 'I' suffix indicates the industrial temperature grade. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16F1708T-I/ML — 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 PIC16F1708T-I/ML (same form factor and footprint) — differing in ADC, Package, DAC, Data EEPROM, I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1708-I/ML
✅ Drop-In✓ In Stock
$1.18 / Unit
View Datasheet →PIC16F1707-I/ML
✅ Drop-In✓ In Stock
$0.72 / Unit
View Datasheet →PIC16F1708-I/SO
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.92 / Unit
View Datasheet →PIC16F1708T-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 enhanced mid-range (8-bit, 14-bit instruction word) |
| Core Processor | PIC |
| Core Size | 8-Bit |
| Maximum CPU Speed | 32 MHz |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| RAM | 512 bytes |
| Data EEPROM | 0 bytes (no on-chip EEPROM) |
| Package | 20-pin QFN (4x4 mm) with exposed thermal pad |
| Operating Voltage Range | 1.8 V to 5.5 V |
| Operating Temperature Range | -40C to +85C (industrial) |
| ADC | 10-bit, up to 17 channels |
| DAC | 8-bit, 1 channel |
| On-chip Op Amps | Yes (selectable gain bandwidth) |
| Comparators | Yes, high-speed |
| Connectivity | I2C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, CLC, COG, ZCD, PPS, CCP |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| MSL Level | 1 |
PIC16F1708T-I/ML Pin Configuration
| Pin 1 | RA5 — Bidirectional I/O / analog input / digital input |
| Pin 2 | RA4 — Bidirectional I/O / analog input |
| Pin 3 | RA3/MCLR — Bidirectional I/O or Master Clear (reset) input |
| Pin 4 | RC5 — Bidirectional I/O |
| Pin 5 | RC4 — Bidirectional I/O |
| Pin 6 | RC3 — Bidirectional I/O |
| Pin 7 | RC2 — Bidirectional I/O |
| Pin 8 | RC1 — Bidirectional I/O |
| Pin 9 | RC0 — Bidirectional I/O |
| Pin 10 | RB7 — Bidirectional I/O |
| Pin 11 | RB6 — Bidirectional I/O / ICSP programming clock |
| Pin 12 | RB5 — Bidirectional I/O / analog input |
| Pin 13 | RB4 — Bidirectional I/O / analog input |
| Pin 14 | VDD — Positive supply voltage (1.8 V to 5.5 V) |
| Pin 15 | VSS — Ground reference |
| Pin 16 | RA2 — Bidirectional I/O / analog input |
| Pin 17 | RA1 — Bidirectional I/O / analog input / ICSP data |
| Pin 18 | RA0 — Bidirectional I/O / analog input |
| Pin 19 | RA7 — Bidirectional I/O / analog input |
| Pin 20 | RA6 — Bidirectional I/O / analog input |
| Pin 21 | EP — Exposed thermal pad — connect to ground for thermal dissipation |
Typical Applications
PIC16F1708T-I/ML is suitable for 7 applications: Battery-Powered IoT Sensor Nodes, Consumer Appliance Control, LED Lighting Drivers and Dimming Control, Industrial Sensor Conditioning and Transmitters, Portable Medical and Wellness Devices, Automotive Body and Accessory Modules, Smart Home and Building Automation.
Battery-Powered IoT Sensor Nodes
The PIC16F1708T-I/ML is an excellent choice for battery-powered IoT sensor nodes because it operates from 1.8 V to 5.5 V (compatible with single-cell Li-ion or 2x AA alkaline batteries) and integrates the on-chip peripherals needed for typical sensor conditioning. Its on-chip operational amplifier, 10-bit ADC, and 8-bit DAC eliminate external analog front-end ICs that would otherwise draw additional quiescent current. The device's XLP sleep currents, often below 1 uA, allow duty-cycled wake-measure-transmit operation that can extend coin-cell battery life to years. The 32 MHz CPU provides enough headroom for I2C/SPI sensor reads, local averaging, and radio control loops. Use the PIC16F1708T-I/ML when you need a compact, low-power MCU with built-in analog and a 20-pin QFN (4x4) footprint for tight PCB layouts.
Recommended
Consumer Appliance Control
The PIC16F1708T-I/ML fits consumer appliance control boards where space is constrained and a small MCU must drive relays, read buttons, and sense analog signals. The 32 MHz CPU and 7 KB Flash comfortably handle user-interface state machines, while the high-speed comparator and 10-bit ADC support zero-cross detection and current sensing without extra analog chips. The 20-pin QFN (4x4 mm) package enables compact board designs found in coffee machines, microwave ovens, and small kitchen appliances. Peripheral Pin Select allows routing UART, SPI, or I2C to the most convenient physical pins, simplifying PCB layout when connectors are placed asymmetrically. PIC16F1708T-I/ML paired with an MCP1700 LDO and an opto-isolated triac driver is a typical reference architecture.
Recommended
LED Lighting Drivers and Dimming Control
The PIC16F1708T-I/ML is well suited for LED lighting controllers and dimming circuits thanks to its 8-bit DAC, PWM module, and high-speed comparators. The DAC can generate the analog reference for an LED current-control loop, while the PWM provides flicker-free dimming with configurable frequency and duty cycle. Core Independent Peripherals such as the Zero-Cross Detect (ZCD) and Complementary Output Generator (COG) can detect mains zero crossings and drive power-FET bridges without CPU intervention, freeing the core for communication stacks such as DALI or 0-10V analog dimming. The 1.8 V to 5.5 V supply range supports both 3.3 V logic-level designs and 5 V systems with white-LED strings.
Recommended
Industrial Sensor Conditioning and Transmitters
Industrial 4-20 mA loop-powered sensor transmitters benefit from the PIC16F1708T-I/ML's on-chip op amp and 10-bit ADC, which together implement a complete signal chain for bridge, RTD, or thermocouple sensors. The integrated op amp can be configured as a low-side or high-side sensor amplifier, eliminating an external instrumentation amp and reducing PCB area. The industrial -40C to +85C temperature rating ensures operation in factory environments, and the 20-pin QFN package fits inside standard sensor head housings. PPS allows the UART to be routed to pins adjacent to the loop interface connector for cleaner PCB routing.
Recommended
Portable Medical and Wellness Devices
For portable medical and wellness devices such as pulse oximeters, glucose meters, and digital thermometers, the PIC16F1708T-I/ML provides the low-power operation, on-chip analog, and small footprint needed. The 10-bit ADC digitizes photodiode or thermistor signals, while the on-chip op amp conditions the analog front end without extra components. The XLP sleep current is critical for battery-life targets on coin-cell or rechargeable Li-Po cells, often allowing multi-month standby time. The 20-pin QFN (4x4 mm) supports miniaturized wearable form factors. Designers should note that this part is not AEC-Q100 qualified — for higher-reliability applications, Microchip's dsPIC33 or PIC24 families are recommended.
Recommended
Automotive Body and Accessory Modules
The PIC16F1708T-I/ML is used in low-complexity automotive body and accessory modules such as interior lighting controllers, mirror adjusters, and seat-position sensors, where its 32 MHz CPU and 10-bit ADC handle LIN-bus communication and analog input monitoring. Note that this part is NOT AEC-Q100 qualified; Microchip recommends the PIC16F1708T-I/MLVAO or PIC16F171x-Q1 family for AEC-Q100 applications. In non-safety accessory modules, the wide 1.8 V to 5.5 V supply range tolerates automotive load-dump transients when paired with a robust TVS-protected LDO. The 20-pin QFN (4x4) saves PCB area in space-constrained body-control modules.
Recommended
Smart Home and Building Automation
The PIC16F1708T-I/ML is a strong fit for smart home and building automation endpoints such as wireless sensor nodes, occupancy detectors, and HVAC dampers. The on-chip ZCD and high-speed comparator support direct mains-voltage zero-cross sensing for TRIAC-based load switching, while the I2C/SPI/UART interfaces link the MCU to wireless modules (Wi-Fi, Sub-GHz, BLE) or sensor hubs. XLP sleep currents enable years of operation on battery-powered window/door sensors. The 7 KB Flash holds typical application logic and small OTA-style firmware updates, and the 512-byte RAM is sufficient for sensor scheduling and radio packet buffering in typical Zigbee or LoRa attachment scenarios.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1708T-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1708-I/ML | PIC16F1707-I/ML |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-pin QFN (4x4 mm) | 20-pin QFN (4x4 mm) - same | 20-pin QFN (4x4 mm) - same |
| Program Memory (Flash) | 7 KB | 7 KB | 3.5 KB |
| RAM | 512 bytes | 512 bytes | 256 bytes |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage Range | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| On-chip DAC | 8-bit, 1 channel | 8-bit, 1 channel | Not present |
| On-chip Op Amps | Yes | Yes | Yes |
| ADC Resolution | 10-bit | 10-bit | 10-bit |
| Industrial Temperature Range | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Integrated 8-bit DAC and on-chip op amps (vs PIC16F1707-I/ML)
- Larger Flash memory and RAM (vs PIC16F1707-I/ML)
- Compact QFN (4x4 mm) form factor (vs PIC16F1708-I/SO)
Design Notes
Estimated: The 20-pin QFN (4x4 mm) exposed thermal pad (EP) on pin 21 MUST be soldered to a PCB ground copper pour for both electrical grounding and thermal dissipation. Without proper EP soldering, junction temperature can rise 20-30% above datasheet limits under typical 10-20 mA loads, especially in enclosed housings. Recommended layout: a 3 mm x 3 mm thermal pad with 9 thermal vias (0.3 mm drill, 0.5 mm pitch) connecting to the inner ground plane. QFN land pattern should follow IPC-7351 nominal density.
Place a 100 nF X7R decoupling capacitor within 2 mm of the VDD pin (pin 14) and a 10 uF bulk capacitor at the board's power-entry point. The PIC16F1708T-I/ML draws fast transient currents when the CPU and ADC switch simultaneously; insufficient decoupling can cause ADC readings to shift by several LSB. Use a star-ground topology with the MCU ground pin returning directly to the EP pad. For battery applications, an MCP1700 LDO (1.6 uA quiescent current) is preferred over switching regulators to avoid injecting switching noise into the analog blocks.
Estimated: When routing the 32 MHz internal oscillator, keep digital switching traces away from analog input pins (RA0-RA7, RB4-RB5). The on-chip FVR (Fixed Voltage Reference) provides a stable 1.024V/2.048V/4.096V reference for the ADC and DAC; enable it in firmware for ratiometric measurements and disable the internal reference when not in use to save power. For the on-chip op amp, add a series resistor (10-100 ohm) at the output to isolate capacitive loads and prevent oscillation. Source impedance at the ADC input should stay below 10 kohm to maintain acquisition accuracy.
Do NOT assume the PIC16F1708T-I/ML has on-chip EEPROM — the part has 0 bytes of data EEPROM. Use Flash with wear-leveling routines for non-volatile parameter storage, or pair with an external I2C EEPROM such as 24LC256. When migrating from PIC16F1708-I/SO (SOIC-20) to PIC16F1708T-I/ML (QFN-20), remember the package footprints differ — QFN needs SMD reflow and the SOIC can be hand-soldered. Configuration bits must be set explicitly: disable the MCLR pin if not used (to free RA3 as I/O), and configure the oscillator for the target clock speed.
Compliance Information
RoHS and REACH compliant per Microchip product page. The part is NOT AEC-Q100 qualified — for automotive designs use the Q1 variant or PIC16F171x-Q1 family. Lead-free and halogen-free per Microchip environmental certification.
