PIC16LF1704T-I/ML - 8-bit MCU, 7KB Flash, 32MHz, 16-QFN | Microchip
MPN: PIC16LF1704T-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.18 | $1.18 |
| 10 | $1.05 | $10.50 |
| 100 | $0.92 | $92.00 |
| 500 | $0.81 | $405.00 |
| 1,000 | $0.72 | $720.00 |
PIC16LF1704T-I/ML Overview
A microcontroller (MCU) is a single-chip computer that contains a CPU core, program and data memory, and a rich set of programmable peripherals. The PIC16LF1704 belongs to the PIC16 family of 8-bit microcontrollers built on Microchip's enhanced mid-range core. Within the broader semiconductor taxonomy, it sits in the hierarchy MCU -> microcontroller -> embedded processor -> digital IC -> semiconductor. The 'LF' prefix denotes the wide-voltage, low-power 'F' process technology that supports operation down to 1.8 V.
Key features include an integrated 10-bit ADC with up to 8 channels, an 8-bit DAC, two high-speed comparators, an operational amplifier (op-amp) module, zero-crossing detection (ZCD), configurable logic cells (CLC), peripheral pin select (PPS), and both EUSART and I2C/SPI serial interfaces. Capture/Compare/PWM (CCP) and enhanced PWM peripherals support motor and lighting control. According to the manufacturer datasheet, the device draws less than 1 µA in sleep with peripherals active, making it well suited to battery-powered applications.
Architecturally, the PIC16LF1704 uses a Harvard RISC core with a 14-bit instruction word and a 32 MHz internal oscillator that requires no external crystal. The on-chip op-amp and DAC enable closed-loop analog control without external amplifiers, reducing BOM cost in sensor-interface and LED-driver designs. PPS allows nearly any digital function to be remapped to most I/O pins, simplifying PCB routing in dense layouts.
Typical applications include IoT sensor nodes, wearable health monitors, low-power wireless remotes, LED lighting controllers, and small motor-control boards. The 16-pin QFN (4x4) package suits space-constrained designs.
When designing in this part, budget the I/O count carefully - 16 pins share power, ground, programming, and I/O functions, so PPS is helpful but not unlimited. Decouple VDD with a 100 nF ceramic capacitor placed within 3 mm of the pin.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC16LF1704T-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 PIC16LF1704T-I/ML (same form factor and footprint) — differing in I/O Pins, Package, Operating Temperature, ADC, Configurable Logic Cells (CLC).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1704-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1704T-E/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1704-E/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1703-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1618-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1554-I/ML
✅ Drop-In✓ In Stock
$0.84 / Unit
View Datasheet →PIC16LF1704T-I/ML Maximum Ratings & Electrical Characteristics
| Series | PIC® XLP™ 16F |
| Core | PIC16 8-bit RISC |
| Program Memory Size | 7 KB (4K x 14 words) |
| SRAM | 512 bytes |
| EEPROM | 256 bytes |
| Maximum Clock Frequency | 32 MHz |
| Instruction Throughput | 32 MIPS |
| Supply Voltage Range | 1.8 V to 3.6 V (LF process) |
| ADC | 10-bit, up to 8 channels |
| DAC | 8-bit, 1 channel |
| Comparators | 2 high-speed |
| Op-amp Module | 1 internal |
| Zero-Cross Detection (ZCD) | Yes |
| Configurable Logic Cells (CLC) | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Serial Interfaces | EUSART, I2C, SPI |
| PWM / CCP | CCP + Enhanced PWM |
| I/O Pins | 12 (16-pin package) |
| Package | 16-QFN (4x4 mm) with Exposed Pad |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) |
| MSL Level | 1 |
| RoHS Status | Compliant |
| Sleep Current | <1 µA (peripherals active) |
PIC16LF1704T-I/ML Pin Configuration
| Pin 1 | RA5 — I/O port A bit 5 / analog input |
| Pin 2 | RA4 — I/O port A bit 4 |
| Pin 3 | RA3/MCLR — I/O port A bit 3 / Master Clear (reset) |
| Pin 4 | RA2 — I/O port A bit 2 / analog input |
| Pin 5 | RA1 — I/O port A bit 1 / ICSPCLK |
| Pin 6 | RA0 — I/O port A bit 0 / ICSPDAT |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RC5 — I/O port C bit 5 |
| Pin 9 | RC4 — I/O port C bit 4 |
| Pin 10 | RC3 — I/O port C bit 3 |
| Pin 11 | RC2 — I/O port C bit 2 |
| Pin 12 | RC1 — I/O port C bit 1 |
| Pin 13 | RC0 — I/O port C bit 0 |
| Pin 14 | VOUT — Voltage regulator output (core supply) |
| Pin 15 | RA7 — I/O port A bit 7 / oscillator input |
| Pin 16 | RA6 — I/O port A bit 6 / oscillator output |
| Pin 17 | EP — Exposed thermal pad (connect to VSS) |
Typical Applications
PIC16LF1704T-I/ML is suitable for 7 applications: IoT Battery-Powered Sensor Node, Wearable Health Monitor, LED Lighting Controller, Small Motor Control Board, Low-Power Wireless Remote Control, Industrial Sensor Transmitter, Consumer Appliance User Interface.
IoT Battery-Powered Sensor Node
The PIC16LF1704T-I/ML is ideal for IoT battery-powered sensor nodes where standby current dominates total energy budget. Its <1 µA sleep current with peripherals active (per the Microchip datasheet), combined with the LF process 1.8-3.6 V supply range, allows years of life from a single CR2032 coin cell. The 10-bit ADC handles temperature, light, and analog front-end conditioning, while PPS remaps EUSART/I2C/SPI to any I/O pin for flexible PCB layout. The internal 32 MHz oscillator eliminates external crystal cost. In sleep-mode sampling cycles with periodic wake-up, average current can drop below 5 µA, and the 16-QFN (4x4) package suits sub-2 cm² node designs.
Recommended
Wearable Health Monitor
Wearable health monitors require low-power MCUs with integrated analog signal conditioning, which the PIC16LF1704T-I/ML provides. The internal op-amp pairs with the 10-bit ADC to amplify photoplethysmography (PPG) or ECG sensor signals without external amplifier ICs, cutting BOM cost. The 8-bit DAC can drive a constant-current LED bias for SpO2 measurement. With 7 KB Flash and 512 B SRAM, the device runs a heart-rate algorithm and BLE control interface over EUSART. The 16-QFN (4x4) footprint fits wristband form factors, and sleep current under 1 µA extends battery life to multi-day wear. PPS allows flexible trace routing inside the constrained band geometry.
Recommended
LED Lighting Controller
The PIC16LF1704T-I/ML fits LED lighting controllers that need analog dimming plus digital communication. Its 8-bit DAC outputs an analog reference for constant-current LED driver ICs, while the dual high-speed comparators implement zero-cross detection (ZCD) for TRIAC dimmer compatibility without external components. The CLC (configurable logic cells) can be wired to combine PWM and analog feedback signals without CPU intervention, offloading the MCU core. Enhanced PWM with CCP supports up to 10-bit resolution for smooth color-mixing in RGBW fixtures. The 32 MHz core provides 32 MIPS - enough to drive WS2812-style addressable LED strips while maintaining serial communication. With 1.8-3.6 V supply it suits both battery- and USB-powered fixtures.
Recommended
Small Motor Control Board
Small brushed-DC and stepper motor control boards benefit from the PIC16LF1704T-I/ML's enhanced PWM, op-amp, and ADC. The internal op-amp senses motor current via a shunt resistor and feeds the ADC for closed-loop current limiting - eliminating an external amplifier. Enhanced PWM outputs drive H-bridge gate drivers directly, while QEI-style timer inputs handle encoder feedback. The CCP module generates complementary PWM with programmable dead time for half-bridge drive. With 32 MIPS throughput, an FOC (field-oriented control) loop is achievable for small BLDC motors. The 16-QFN (4x4) package and 1.8-3.6 V supply fit compact fan, pump, and robotic actuator boards.
Recommended
Low-Power Wireless Remote Control
Low-power wireless remote controls rely on aggressive sleep modes and minimal active-time compute, both delivered by the PIC16LF1704T-I/ML. The XLP (eXtreme Low Power) technology with sub-1 µA sleep current and <100 µA active current at 1 MHz allows coin-cell remotes to last 5+ years. The PIC16LF1704's EUSART drives sub-GHz or 2.4 GHz transceiver ICs like the MRF24J40 or RN42 with byte-level interrupt overhead. PPS allows remapping wake-up interrupt pins to any I/O, simplifying PCB antenna-clearance layouts. With 7 KB Flash, a multi-button scanner with debouncing, IR-protocol, and RF-stack glue fits comfortably.
Recommended
Industrial Sensor Transmitter
Industrial 4-20 mA sensor transmitters benefit from the PIC16LF1704T-I/ML's op-amp, DAC, and industrial temperature rating (-40C to +85C). The op-amp conditions bridge sensor or 4-wire RTD signals directly to the 10-bit ADC, while the 8-bit DAC generates the 4-20 mA loop current via an external Howland current pump. The ZCD detects loop polarity for HART or half-duplex comms. With 32 MIPS throughput, calibration coefficients and linearization math fit in the 7 KB Flash alongside the loop-control loop. The 16-QFN (4x4) package is small enough to fit inside standard sensor head enclosures, and PPS remap I2C or SPI diagnostics lines around the loop-output stage.
Recommended
Consumer Appliance User Interface
Consumer appliance user-interface boards combining touch buttons, LEDs, and a serial interface to the main controller fit the PIC16LF1704T-I/ML well. Its CLC blocks can decode cap-touch or matrix-keypad events without CPU wake-up, reducing power. The DAC drives LED brightness via PWM-amplified outputs, while the dual comparators handle over-temperature or zero-voltage switching (ZVS) sensing for safety. EUSART or I2C provides the appliance-side bus, and PPS lets the same firmware map to different connector pinouts across product variants - saving firmware branches. The 16-QFN (4x4) footprint fits behind appliance front panels.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1704T-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1704-I/ML | PIC16LF1704T-E/ML | PIC16LF1704-E/ML | PIC16LF1703-I/ML | PIC16LF1618-I/ML | PIC16LF1554-I/ML |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 16-QFN (4x4 mm) with EP | 16-QFN (4x4 mm) - same | 16-QFN (4x4 mm) - same | 16-QFN (4x4 mm) - same | 16-QFN (4x4 mm) - same | 16-QFN (4x4 mm) - same | 16-QFN (4x4 mm) - same |
| Program Memory (Flash) | 7 KB | 7 KB | 7 KB | 7 KB | 7 KB | 7 KB | 7 KB |
| SRAM | 512 B | 512 B | 512 B | 512 B | 512 B | 256 B (-50%) | 256 B (-50%) |
| Maximum Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Supply Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| DAC / Op-amp / ZCD / CLC / PPS | Yes (all) | Yes (all) | Yes (all) | Yes (all) | No (lacks all) | No (lacks all) | No (lacks all) |
| Temperature Grade | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Extended (-40C to +125C) | Extended (-40C to +125C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) |
| Unit Price (approx., 1 pc, as of 2026-09-23) | $1.18 | $1.20 | $1.30 | $1.30 | $1.05 | $1.15 | $1.00 |
Key Differentiators
- Integrated op-amp eliminates external amplifier (vs PIC16LF1703-I/ML)
- PPS allows flexible I/O mapping (vs PIC16LF1554-I/ML)
- 8-bit DAC for analog output (vs PIC16LF1618-I/ML)
- Higher SRAM than nearest alternative (vs PIC16LF1554-I/ML)
Design Notes
The PIC16LF1704T-I/ML requires a single bulk 100 nF ceramic decoupling capacitor placed within 3 mm of the VDD pin, plus an additional 10 µF bulk capacitor if the supply trace exceeds 25 mm. The on-chip voltage regulator at VOUT (pin 14) needs its own 100 nF decoupling cap. Avoid powering the MCU through a ferrite bead with no bulk cap on the load side - the inrush current during PLL acquisition can collapse the rail and trigger spurious resets.
Expose the package bottom pad (pin 17) to a continuous ground plane with thermal vias on a 0.5 mm pitch. This grounds the exposed pad and provides the primary thermal path - the device dissipates <100 mW even at full CPU load, so no separate heatsink is needed, but a missing solder connection on the EP can cause erratic behavior or MCLR contention. Keep the ICSP programming pins (RA0/ICSPDAT, RA1/ICSPCLK) free of series resistors >470 ohm to maintain reliable in-circuit programming.
Avoid enabling the internal op-amp and DAC simultaneously with the ADC if the analog source impedance exceeds 5 kΩ - the input mux switching can cause cross-talk that the 10-bit ADC cannot resolve. Use the PPS (peripheral pin select) to map EUSART and CCP outputs to high-drive pins (RA4, RA5, RC0, RC1) - driving PWM on low-drive pins reduces output edge quality. The MCLR pin (RA3) is a shared I/O; if disabled in configuration, RA3 can only be used as input.
Route the analog signals (ADC inputs, op-amp input/output, comparator inputs) on a separate analog ground island that joins the digital ground at a single point near the MCU's VSS pin. Keep digital traces (PWM, EUSART) at least 3 mm away from analog traces, or use a ground trace as a shield. Place the 32.768 kHz external crystal (if used) within 5 mm of RA6/RA7 and shield the traces with a grounded pour to minimize coupling from PWM outputs.
Compliance Information
RoHS and REACH compliant per Microchip product page. Lead-free and halogen-free packaging. AEC-Q100 qualification is not available for this part - automotive designs should consult Microchip's automotive-grade PIC portfolio.
