PIC16F1708T-I/SO - 8-bit 32MHz 7KB Flash MCU | Microchip
MPN: PIC16F1708T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.15 | $2.15 |
| 10 | $1.94 | $19.40 |
| 100 | $1.72 | $172.00 |
| 500 | $1.55 | $775.00 |
| 1,000 | $1.39 | $1,390.00 |
| 3,000 | $1.21 | $3,630.00 |
PIC16F1708T-I/SO Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, RAM, and a rich set of peripherals into one package. Within the broader taxonomy, the PIC16F1708 belongs to the 8-bit MCU category, falls under the enhanced mid-range PIC16 family, and ultimately resides inside Microchip's PIC® XLP™ 16F product line. It targets cost-sensitive applications that still require high-precision analog signal conditioning and ultra-low standby power consumption.
Key features of the PIC16F1708 include 7KB Flash program memory, 512 bytes of SRAM, 256 bytes of data EEPROM, four 10-bit ADC channels with computation, two on-chip operational amplifiers, two high-speed comparators, an 8-bit DAC, two PWM modules with CCP, and an internal 32 MHz oscillator. The XLP sleep current is rated in the nanoamp range, making the part well suited to battery-powered sensor nodes. The device runs from 1.8V to 5.5V VDD with a 200 ns instruction cycle.
Architecturally, the PIC16F1708 uses the enhanced mid-range 14-bit instruction set with a hardware multiplier and C language-optimized architecture. Core Independent Peripherals (CIPs) such as the Configurable Logic Cell (CLC) and Complementary Output Generator (COG) can offload timing-critical tasks from the CPU, freeing the core for application logic and communications.
Typical applications include IoT sensor nodes, battery-powered instrumentation, low-power wireless transmitters, LED lighting controllers, and consumer appliances that need integrated analog signal conditioning. The 20-pin SOIC package is industry standard for hand-soldered prototypes and high-volume SMT production alike.
When designing with this MCU, plan pin assignments early to leverage Peripheral Pin Select (PPS), which lets most digital peripherals be remapped to a wide choice of I/O pins, simplifying PCB routing. Decouple VDD with a 1uF plus 0.1uF capacitor pair placed within 5 mm of the supply pins.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single source for component evaluation, sourcing, and PCB-level design decisions.
Drop-in alternatives for PIC16F1708T-I/SO — 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/SO (same form factor and footprint) — differing in ADC, Core Independent Peripherals, Package, DAC, MSL Level.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1708-I/SO
✅ Drop-In✓ In Stock
$0.92 / Unit
View Datasheet →PIC16F1708-E/SO
✅ Drop-In✓ In Stock
$1.18 / Unit
View Datasheet →PIC16F1718-I/SO
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.3 / Unit
View Datasheet →PIC16F1708T-I/SO Maximum Ratings & Electrical Characteristics
| Series | PIC® XLP™ 16F |
| Core Processor | PIC |
| Core Size | 8-Bit |
| Maximum CPU Speed | 32 MHz |
| Program Memory Size | 7 KB (4K x 14) Flash |
| RAM Size | 512 bytes |
| EEPROM Size | 256 bytes |
| Number of I/O Pins | 18 |
| Supply Voltage (VDD) | 1.8 V to 5.5 V |
| Operating Temperature | -40C to +85C (Industrial) |
| ADC | 10-bit, up to 17 channels |
| DAC | 8-bit, 1 channel |
| Comparators | 2 high-speed |
| On-chip Op Amps | 2 |
| PWM / CCP | Yes, 2 PWM with CCP |
| Core Independent Peripherals | CLC, COG, ZCD, PPS |
| Communication | I2C, SPI, EUSART |
| Package | 20-pin SOIC (SO) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| MSL Level | 1 (Unlimited) |
| Instruction Cycle | 200 ns (at 32 MHz) |
PIC16F1708T-I/SO Pin Configuration
| Pin 1 | VDD — Positive supply voltage |
| Pin 2 | RA5 — Bidirectional I/O / analog input |
| Pin 3 | RA4 — Bidirectional I/O / analog input / Timer0 clock |
| Pin 4 | RA3 — Bidirectional I/O / analog input / MCLR |
| Pin 5 | RC5 — Bidirectional I/O / analog input / CCP1 |
| Pin 6 | RC4 — Bidirectional I/O / analog input |
| Pin 7 | RC3 — Bidirectional I/O / analog input / SCL |
| Pin 8 | RC2 — Bidirectional I/O / analog input |
| Pin 9 | RC1 — Bidirectional I/O / analog input / CCP2 |
| Pin 10 | RC0 — Bidirectional I/O / analog input |
| Pin 11 | RA2 — Bidirectional I/O / analog input / DAC output |
| Pin 12 | RA1 — Bidirectional I/O / analog input / OPA1IN- |
| Pin 13 | RA0 — Bidirectional I/O / analog input / OPA1IN+ |
| Pin 14 | VSS — Ground reference |
| Pin 15 | RB7 — Bidirectional I/O / ICSPDAT |
| Pin 16 | RB6 — Bidirectional I/O / ICSPCLK |
| Pin 17 | RB5 — Bidirectional I/O / analog input |
| Pin 18 | RB4 — Bidirectional I/O / analog input |
| Pin 19 | RB3 — Bidirectional I/O / analog input |
| Pin 20 | RB2 — Bidirectional I/O / analog input |
Typical Applications
PIC16F1708T-I/SO is suitable for 7 applications: Battery-Powered IoT Sensor Nodes, LED Lighting and Dimming Controllers, Consumer Appliance Control Boards, Portable Medical Monitoring Devices, Industrial Sensor Signal Conditioning, Automotive Body Electronics (Non-Safety), Handheld Measurement Instruments.
Battery-Powered IoT Sensor Nodes
The PIC16F1708T-I/SO suits wireless sensor endpoints where every microamp matters. Its XLP sleep currents in the nanoamp range and 1.8-5.5V wide VDD allow direct connection to coin-cell or 2xAA supplies without boost regulators. The integrated 10-bit ADC, two on-chip op amps, and 8-bit DAC condition signals from sensors such as thermocouples, RTDs, and bridge transducers without external analog front ends. The CLC and COG peripherals handle timing-critical pulse trains in hardware, letting the CPU stay in sleep and only wake on interrupts from the ADC or EUSART, extending battery life to multi-year horizons.
Recommended
LED Lighting and Dimming Controllers
The PIC16F1708T-I/SO is ideal for smart LED drivers that require smooth analog dimming and high-frequency PWM. Its two PWM modules with CCP support up to 32 kHz PWM for flicker-free constant-current LED control, while the COG peripheral provides hardware dead-band generation for synchronous buck/boost converter topologies. The 8-bit DAC combined with two on-chip op amps implements a precision constant-current regulator. The ZCD detects AC line zero crossings for TRIAC-dimmable designs, and PPS allows signal rerouting during PCB layout without rewiring firmware.
Recommended
Consumer Appliance Control Boards
Household appliances such as coffee machines, washing machines, and induction cooktops need an MCU that integrates analog conditioning and motor control. The PIC16F1708T-I/SO provides two high-speed comparators for current sensing in motor control loops and two on-chip op amps for signal amplification. Its 7 KB Flash is sufficient for user-interface state machines plus safety monitoring. The CLC peripheral handles emergency shutoff logic in hardware, bypassing firmware latency that could risk UL/IEC safety compliance.
Recommended
Portable Medical Monitoring Devices
Portable medical devices such as pulse oximeters, blood-pressure cuffs, and glucose meters benefit from the PIC16F1708T-I/SO's low-power XLP architecture. The integrated 10-bit ADC reads analog sensor data from optical or electrochemical transducers, while the on-chip op amps amplify weak signals before digitization. The CLC and EUSART peripherals implement simple wireless protocols (proprietary RF) or wired UART/I2C/SPI to host MCUs or BLE modules, all while keeping sleep current in nanoamperes for multi-week battery life.
Recommended
Industrial Sensor Signal Conditioning
Industrial 4-20 mA loop-powered sensors, RTD transmitters, and bridge load-cell conditioners demand accurate analog front ends. The PIC16F1708T-I/SO's two integrated op amps and 8-bit DAC provide the signal conditioning chain in a single 20-pin SOIC, replacing several discrete op amp ICs. The ADC with averaging and threshold compare automates linearization routines, freeing the CPU for HART, IO-Link, or MODBUS protocol stacks running on the EUSART. PPS simplifies PCB routing when the 4-20 mA interface and digital bus share pins in different configurations.
Recommended
Automotive Body Electronics (Non-Safety)
Non-safety automotive body modules such as interior lighting controllers, seat heaters, and HVAC blend-door actuators use the PIC16F1708T-I/SO. The 32 MHz core and PWM modules drive small brushed DC motors and LED matrices. The CLC peripheral handles simple LIN or PWM-based communication protocols, while the on-chip op amps condition sensor inputs such as temperature and position. For AEC-Q100-grade applications, designers should select the PIC16F1708-E/SO (extended temperature) variant instead, since the PIC16F1708T-I/SO is industrial grade only.
Recommended
Handheld Measurement Instruments
Handheld DMMs, clamp meters, and cable testers rely on the PIC16F1708T-I/SO's wide 1.8-5.5V VDD to run directly from two AA cells. The ADC with hardware averaging reads voltage, current, and resistance, while the on-chip op amps implement active rectification and range-switching signal chains. The CLC peripheral debounces user button inputs in hardware, reducing firmware polling. The 20-pin SOIC package supports hand-soldered prototypes and SMT assembly, and PPS allows flexible pin assignments across successive product revisions.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1708T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1708-I/SO | PIC16F1708-E/SO | PIC16F1718-I/SO |
|---|---|---|---|---|
| Package | 20-pin SOIC (SO) | 20-pin SOIC (SO) | 20-pin SOIC (SO) | 20-pin SOIC (SO) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 7 KB | 7 KB | 7 KB | 14 KB |
| RAM | 512 bytes | 512 bytes | 512 bytes | 1 KB |
| Data EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) |
| On-chip Op Amps | 2 | 2 | 2 | 2 |
| Comparators | 2 | 2 | 2 | 2 |
| ADC / DAC | 10-bit ADC / 8-bit DAC | 10-bit ADC / 8-bit DAC | 10-bit ADC / 8-bit DAC | 10-bit ADC / 8-bit DAC |
Key Differentiators
- On-chip dual op amps eliminate external analog front-end ICs (vs PIC16F1705T-I/ST)
- Larger Flash and RAM than lower-tier family members (vs PIC16F1707T-I/ML)
- Industrial-grade temperature range as standard in T-suffix variant (vs PIC16F1708-I/P (DIP))
Design Notes
Decouple VDD (pin 1) and AVSS/VSS (pin 14) with a 1uF X7R plus a 0.1uF ceramic capacitor placed within 5 mm of the supply pins. For battery-powered designs, use the XLP sleep modes with RTCC or ADC interrupt wakeup; expected sleep currents are in the nanoamp range. Disable unused peripherals in firmware (and via the PMD registers) to minimize active current at 32 MHz.
Place the ICSP programming pins (RB6 = ICSPCLK, RB7 = ICSPDAT) on the PCB with accessible test pads or footprint for in-circuit programming. Pull MCLR (RA3) high through a 10 kohm resistor to VDD and add a 100 nF capacitor to ground to suppress ESD-induced resets. Keep analog traces short and isolated from digital switching signals to preserve the ADC SNR.
Estimated: at 32 MHz with VDD=3.3V, the typical IDD active current is approximately 4-6 mA - confirm against the datasheet DC characteristics section for your exact configuration. Do not exceed VDD=5.5V or operate below 1.8V. Configure the PPS registers correctly before enabling peripherals, as mis-mapping causes peripherals to drive the wrong pin. Ensure the configuration words are programmed to enable the internal HFINTOSC if no external crystal is used.
When using the on-chip op amps as buffers for ADC inputs, route the analog ground (VSS) star-fashion from a single via to avoid ground loops that corrupt the 10-bit ADC. Place analog reference (VREF+/VREF-) bypass capacitors with 100 nF and 10uF values to suppress switching noise. Use CLC peripheral to debounce mechanical switch inputs in hardware before reaching the CPU, eliminating ISR latency issues.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - choose PIC16F1708-E/SO or PIC16F1709 automotive part numbers for AEC-Q100 requirements. Lead-free and halogen-free per Microchip environmental compliance data.