PIC16LF1704-E/ST - 8-bit MCU, 7KB Flash, 32MHz, 14-TSSOP | Microchip
MPN: PIC16LF1704-E/ST ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.66 | $16.60 |
| 100 | $1.42 | $142.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $0.98 | $980.00 |
PIC16LF1704-E/ST Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash/ROM), data memory (RAM), I/O ports, and peripherals on one die. Within the broader semiconductor taxonomy, the PIC16LF1704 sits in the hierarchy: microcontroller -> embedded processor -> digital IC -> semiconductor. The "LF" suffix denotes the low-voltage (1.8-3.6V) variant of the PIC16F1704 family, optimized for battery-powered and energy-harvesting applications where the XLP™ (eXtreme Low Power) technology delivers nanoWatt sleep currents below 50 nA typical.
Key features include four 10-bit PWM channels, two op-amps with internal routing, two high-speed comparators, a 10-bit ADC with up to 8 channels, an 8-bit DAC, and Peripheral Pin Select (PPS) for flexible I/O mapping. The integrated op amps and DAC eliminate the need for external analog ICs in many signal-chain designs, reducing BOM cost and PCB area. PPS allows peripheral signals (UART, SPI, PWM) to be remapped to nearly any digital I/O pin, simplifying PCB layout and package migration.
The architecture is a RISC-based enhanced mid-range core with a hardware multiplier, 49 instructions, and a two-deep hardware stack for subroutine nesting. The 32MHz internal oscillator (±1% calibrated) eliminates the need for an external crystal in most applications, saving two PCB components and reducing BOM cost. XLP technology with multiple idle/sleep modes, watchdog timer, and ultra-low-power RTC enables years of operation on a single coin cell.
Typical applications include IoT sensor nodes, battery-powered wireless transmitters, LED lighting controllers, small appliance control, portable medical devices, and consumer electronics. The wide 1.8-3.6V range supports direct connection to single-cell Li-ion or two-alkaline-cell battery stacks. The integrated op amps and DAC make it well-suited for closed-loop control of sensors, motor drivers, and lighting.
When designing with the PIC16LF1704, plan for programming/debug via the ICSP™ (In-Circuit Serial Programming) interface on pins ICSPCLK/ICSPDAT. A 100nF decoupling capacitor must be placed within 5mm of VDD, and the unused I/O pins should be configured as outputs low to minimize power. The PPS feature must be initialized in firmware before the affected peripherals are enabled.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC16LF1704-E/ST — 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 PIC16LF1704-E/ST (same form factor and footprint) — differing in ADC, Package, Comparators, DAC, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1704T-I/ST
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1704-I/ST
✅ Drop-In✓ In Stock
$1.52 / Unit
View Datasheet →PIC16F1825-I/ST
✅ Drop-In✓ In Stock
$1.32 / Unit
View Datasheet →PIC16F1823-I/ST
✅ Drop-In✓ In Stock
$0.85 / Unit
View Datasheet →PIC16LF1704-E/SL
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.82 / Unit
View Datasheet →PIC16LF1704-E/ST 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 words) FLASH |
| RAM Size | 512 B |
| EEPROM Size | 256 B |
| Supply Voltage (Vdd) | 1.8 V to 3.6 V |
| Operating Temperature | -40C to +125C |
| Package | 14-TSSOP (0.173", 4.40 mm Width) |
| Number of I/O Pins | 12 |
| ADC | 10-bit, up to 8 channels |
| DAC | 8-bit, 1 channel |
| Op Amps | 2 (integrated) |
| Comparators | 2 (high-speed) |
| PWM Channels | 4 x 10-bit |
| Communication Interfaces | EUSART, I2C, SPI |
| Peripheral Pin Select (PPS) | Yes |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16LF1704-E/ST Pin Configuration
| Pin 1 | RA5/ICSPDAT/SOSCIN — Bidirectional I/O, ICSP data, secondary oscillator input |
| Pin 2 | RA4/AN3/T1G/OSC2/CLKOUT — Bidirectional I/O, ADC input, Timer1 gate, oscillator output |
| Pin 3 | RA3/MCLR/VPP — Bidirectional I/O, master clear reset, programming voltage |
| Pin 4 | RC5/CCP1/P1D — Bidirectional I/O, CCP1 output, PWM output |
| Pin 5 | RC4/C2OUT — Bidirectional I/O, comparator 2 output |
| Pin 6 | RC3/AN7/C12IN3-/P1C — Bidirectional I/O, ADC input, comparator input, PWM output |
| Pin 7 | RC2/AN6/C12IN2-/P1B — Bidirectional I/O, ADC input, comparator input, PWM output |
| Pin 8 | RC1/AN5/C12IN1-/OPA1OUT — Bidirectional I/O, ADC input, comparator input, op-amp 1 output |
| Pin 9 | RC0/AN4/C2IN+/OPA1IN+ — Bidirectional I/O, ADC input, comparator input, op-amp 1 non-inverting input |
| Pin 10 | RA2/AN2/T0CKI/C1OUT — Bidirectional I/O, ADC input, Timer0 clock, comparator 1 output |
| Pin 11 | RA1/AN1/ICSPCLK/OPA1OUT — Bidirectional I/O, ADC input, ICSP clock, op-amp 1 output (alt) |
| Pin 12 | RA0/AN0/OPA1IN+/DACOUT — Bidirectional I/O, ADC input, op-amp 1 non-inverting input, DAC output |
| Pin 13 | VSS — Ground reference |
| Pin 14 | VDD — Positive supply voltage (1.8V to 3.6V) |
Typical Applications
PIC16LF1704-E/ST is suitable for 7 applications: Battery-Powered IoT Sensor Node, LED Lighting Controller, Portable Medical Device, Small Appliance Control Board, Wireless Remote Control Transmitter, Industrial Sensor Transmitter, Consumer Toy and Hobby Electronics.
Battery-Powered IoT Sensor Node
The PIC16LF1704-E/ST is well suited for IoT sensor nodes due to its 1.8-3.6V Vdd range and XLP nanoWatt technology. Sleep currents below 50 nA typical at 1.8V enable multi-year battery life on a single CR2032 coin cell. The integrated 10-bit ADC with up to 8 channels handles temperature, humidity, and light sensors directly, while the two on-chip op amps condition bridge sensors and thermistors without external ICs. According to Microchip datasheet 40001715D, the device wakes from sleep in <5 us on interrupt, supporting low-duty-cycle wireless transmission windows.
Recommended
LED Lighting Controller
The PIC16LF1704-E/ST drives LED lighting systems using its four 10-bit PWM channels and integrated op amps for current sensing. The PWM outputs provide smooth dimming with 1024-step resolution, while the on-chip comparators implement overcurrent and over-temperature protection. Per Microchip application notes, the 32MHz core executes LED control loops at >1 kHz update rate, eliminating visible flicker. The wide 1.8-3.6V supply supports battery-powered LED strips and USB-powered fixtures with a single LDO.
Recommended
Portable Medical Device
The PIC16LF1704-E/ST fits portable medical devices such as glucose meters, pulse oximeters, and nebulizer controllers. The integrated 10-bit ADC and op amps interface with photodetectors and electrochemical sensors directly, while the 7KB Flash accommodates FDA-cleared firmware libraries. Per Microchip datasheet 40001715D, the -40C to +125C operating range supports clinical and home environments. The 14-TSSOP package is small enough for wearable form factors, and the XLP sleep modes extend battery life between patient measurements.
Recommended
Small Appliance Control Board
The PIC16LF1704-E/ST controls small appliances such as coffee makers, blenders, and air purifiers. Its four PWM channels drive motor speeds and heating elements, while the integrated op amps implement current and temperature feedback loops. The EUSART interface connects to display modules or Bluetooth modules for smart appliance connectivity. Per Microchip datasheet 40001715D, the 49-instruction RISC core runs at 8 MIPS, enabling real-time control without an RTOS. The 256B EEPROM stores user preferences across power cycles.
Recommended
Wireless Remote Control Transmitter
The PIC16LF1704-E/ST serves as the controller in low-power wireless remote controls for consumer electronics and IoT devices. Its XLP sleep currents below 50 nA extend coin-cell battery life beyond the shelf life of competitive designs. Per Microchip datasheet 40001715D, the integrated op amp can implement a touch-sensing keypad, reducing component count. The 32MHz core encodes and transmits data via the EUSART to a sub-GHz or 2.4 GHz transceiver in burst mode, returning to sleep immediately after transmission.
Recommended
Industrial Sensor Transmitter
The PIC16LF1704-E/ST interfaces with 4-20 mA current-loop and HART-protocol industrial sensors. Its 10-bit ADC digitizes the loop current with 0.1% resolution, while the integrated DAC generates the analog output for HART modulation. Per Microchip datasheet 40001715D, the -40C to +125C operating range and EUSART interface support industrial protocols. The 14-TSSOP package fits in standard field-mount enclosures, and the CLC (Configurable Logic Cells) implement protocol glue logic without external gates.
Recommended
Consumer Toy and Hobby Electronics
The PIC16LF1704-E/ST drives cost-sensitive consumer toys, hobby robotics, and educational electronics kits. Its low unit cost (~$0.98 at 1K pieces) and small TSSOP-14 footprint fit tight BOM and PCB budgets. The integrated op amps, ADC, and PWM channels drive hobby servos and LEDs without external driver ICs. Per Microchip datasheet 40001715D, the 7KB Flash accommodates user program development, and the ICSP interface allows in-system programming during production. The 32MHz speed supports real-time motor control at >1 kHz update rate.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1704-E/ST — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1704T-I/ST | PIC16LF1704-I/ST | PIC16F1825-I/ST | PIC16F1823-I/ST | PIC16LF1704-E/SL |
|---|---|---|---|---|---|---|
| Package | 14-TSSOP | 14-TSSOP - same | 14-TSSOP - same | 14-TSSOP - same | 14-TSSOP - same | 14-SOIC - different footprint |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | PIC 8-bit | PIC 8-bit | PIC 8-bit | PIC 8-bit | PIC 8-bit | PIC 8-bit |
| Max CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Flash Memory | 7 KB (4K x 14) | 7 KB | 7 KB | 16 KB | 2 KB | 7 KB |
| RAM | 512 B | 512 B | 512 B | 1 KB | 128 B | 512 B |
| Vdd Range | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V |
| Operating Temperature | -40C to +125C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C |
| ADC | 10-bit, 8 ch | 10-bit, 8 ch | 10-bit, 8 ch | 10-bit, 8 ch | 8-bit, 4 ch | 10-bit, 8 ch |
| DAC | 8-bit, 1 ch | 8-bit, 1 ch | 8-bit, 1 ch | 5-bit, 1 ch | No DAC | 8-bit, 1 ch |
| Op Amps | 2 integrated | 2 integrated | 2 integrated | 1 integrated | No op amps | 2 integrated |
| Unit Price (qty 1) | 1.85 USD | 1.85 USD | 1.78 USD | 2.10 USD | 1.55 USD | 1.92 USD |
Key Differentiators
- Higher Flash memory (16 KB vs 7 KB) at same footprint (vs PIC16F1825-I/ST)
- Two integrated op amps eliminate external analog ICs (vs PIC16F1823-I/ST)
- Extended industrial temperature range -40C to +125C (vs PIC16LF1704-I/ST)
- Low voltage operation 1.8V-3.6V for battery applications (vs PIC16F1704-E/ST)
Design Notes
Place a 100nF decoupling capacitor within 5mm of VDD (pin 14) and a bulk capacitor of at least 1uF on the same rail. According to Microchip datasheet 40001715D, the LF variant draws up to 4.5mA at 32MHz in active mode and <50nA in sleep. For battery-powered designs, switch to the 31 kHz LFINTOSC before issuing the SLEEP instruction to achieve the lowest sleep current. Estimated: average power for a 0.1% active duty cycle is approximately 5 uA at 3V.
Route the ICSP signals (ICSPCLK on pin 11, ICSPDAT on pin 1) as short, direct traces to a programming header. Per Microchip programming specification DS30009632, ICSP lines should not be shared with high-current switching signals or be loaded with capacitance exceeding 30 pF to avoid programming failures. The MCLR/VPP pin (pin 3) requires a pull-up to VDD; do not leave it floating.
Initialize Peripheral Pin Select (PPS) in firmware before enabling the associated peripheral; otherwise the peripheral will not function even if its control registers appear correctly configured. Per Microchip datasheet 40001715D, PPS unlocking requires the sequence PPSLOCK = 0x55, PPSLOCK = 0xAA, then clearing PPSLOCK. The CONFIG words must be set correctly for code protection and oscillator selection; using the wrong CONFIG1 can brick the device until a high-voltage programmer recovers it.
The op-amp inputs have a common-mode range that depends on the configuration; ensure that input signals stay within the op-amp input range specified in the datasheet. Per Microchip datasheet 40001715D, the on-chip op amps are rail-to-rail output but have a limited input common-mode range of 0.3V to VDD-0.6V. Place bypass capacitors near any sensitive analog input traces, and consider a unity-gain buffer if driving long cables.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - for automotive applications, consider PIC16F1704-E/ST or PIC16LF1704T-E/ST with explicit automotive qualification. Operating temperature -40C to +125C (industrial extended) per -E suffix.
