PIC16LF1554-E/SL - 8-Bit MCU, 7KB Flash, 14-SOIC | Microchip
MPN: PIC16LF1554-E/SL β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.8 | $1.80 |
| 10 | $1.6 | $16.00 |
| 100 | $1.39 | $139.00 |
| 500 | $1.2 | $600.00 |
| 1,000 | $1.08 | $1,080.00 |
PIC16LF1554-E/SL Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and programmable peripherals; the PIC16LF1554 belongs to the PIC16F family of 8-bit MCUs, sits under Microchip's enhanced mid-range core architecture, and is targeted at general-purpose and touch-sensing (mTouch) designs. The "LF" prefix denotes the wide-voltage, low-power variant optimized for battery-friendly operation, falling under the broader category of embedded microcontrollers and semiconductors.
Key features of the PIC16LF1554 include eXtreme Low Power (XLP) technology for nanoWatt sleep currents, two 10-bit ADC modules with hardware CVD support for capacitive touch sensing, support for I2C, SPI, and UART (with EUSART) serial interfaces, two PWM/Signal Measurement Timer peripherals, an integrated temperature indicator, and 12 I/O pins. The -E suffix indicates an extended industrial temperature grade of -40C to +125C.
Internally, the PIC16LF1554 uses a Harvard-architecture 8-bit CPU with 14-bit instruction words, an Interrupt Controller supporting both interrupt-on-change and core-based interrupts, a 32 kHz internal oscillator for low-power sleep, and a configurable 16 MHz high-frequency internal oscillator. This combination allows the MCU to wake quickly for sampling and return to deep sleep between events, supporting multi-year battery life in mTouch and IoT sensor applications.
Typical applications include mTouch capacitive touch buttons, sliders, and proximity sensors, consumer-electronics user interfaces, low-power IoT sensor nodes, household appliances with touch keypads, and industrial control panels. The 11 analog channels and hardware CVD make the part a strong fit for cost-sensitive touch UIs, while the small 14-SOIC footprint allows placement in space-constrained modules.
When designing with the PIC16LF1554, ensure the supply decoupling capacitor is placed close to VDD with a 100 nF ceramic in parallel with a bulk capacitor, and place the CVD shielding traces to minimize moisture intrusion. Programming is supported by Microchip's MPLAB X IDE with MPLAB XC8 compiler; pick the PIC16LF1554 when you need a 14-pin, low-voltage, touch-capable MCU.
This page synthesizes distributor pricing for the PIC16LF1554-E/SL as of 2026-09-23, drop-in PIC16 same-family and cross-brand alternatives, and practical design notes not always present in the manufacturer datasheet.
Drop-in alternatives for PIC16LF1554-E/SL β 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 PIC16LF1554-E/SL (same form factor and footprint) β differing in Core Architecture, Package, Program Memory (Flash), ADC, Mounting Type.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16LF1554-I/SL
β Drop-Inβ In Stock
$0.92 / Unit
View Datasheet βPIC16LF1554-E/P
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
PIC16LF1559-E/SL
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
PIC16LF1554-E/SL Maximum Ratings & Electrical Characteristics
| Manufacturer | Microchip Technology |
| Series / Family | PIC16F (PIC16LF155x, enhanced mid-range core) |
| Core Architecture | 8-bit PIC enhanced mid-range, 14-bit instruction word |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data SRAM | 512 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 12 |
| ADC | 2 x 10-bit, up to 11 analog channels with hardware CVD |
| Communication Interfaces | I2C, SPI, EUSART (UART) |
| Timers / PWM | 2 x PWM/Signal Measurement Timer peripherals |
| Low-Power Technology | XLP (eXtreme Low Power), nanoWatt sleep |
| Operating Temperature | -40C to +125C (industrial, -E grade) |
| Package | 14-pin SOIC (SL) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| MSL Level | 1 |
PIC16LF1554-E/SL Pin Configuration
| Pin 1 | VDD β Positive supply voltage (1.8 V to 3.6 V) |
| Pin 2 | RA5 β Digital I/O / analog input AN5 |
| Pin 3 | RA4 β Digital I/O / analog input AN4 |
| Pin 4 | RA3/MCLR β Digital I/O / analog input AN3 / Master Clear reset (input) |
| Pin 5 | RA2 β Digital I/O / analog input AN2 |
| Pin 6 | RA1/ICSPCLK β Digital I/O / analog input AN1 / ICSP clock |
| Pin 7 | RA0/ICSPDAT β Digital I/O / analog input AN0 / ICSP data |
| Pin 8 | VSS β Ground reference |
| Pin 9 | RB7 β Digital I/O / analog input AN7 |
| Pin 10 | RB6 β Digital I/O / analog input AN6 / ICSPCLK (alt) |
| Pin 11 | RB5 β Digital I/O / analog input AN5 (alt) |
| Pin 12 | RB4 β Digital I/O / analog input AN4 (alt) |
| Pin 13 | RC2 β Digital I/O |
| Pin 14 | RC3 β Digital I/O |
Typical Applications
PIC16LF1554-E/SL is suitable for 6 applications: mTouch Capacitive Touch Buttons, Low-Power IoT Sensor Nodes, Consumer-Appliance User Interfaces, Industrial Control Panels, Battery-Operated Toys and Wearables, Smart Switches and Lighting Touch Panels.
mTouch Capacitive Touch Buttons
The PIC16LF1554-E/SL is purpose-built for mTouch capacitive touch sensing, with two 10-bit ADCs and up to 11 analog channels feeding hardware CVD (Capacitive Voltage Divider) for robust measurement versus power and temperature drift. In a 4-button keypad application the MCU settles each scan in microseconds, lets the CPU return to nanoWatt sleep, and wakes on a touch above the threshold. Compared with an RC-based touch MCU the LF1554 drops external components, freeing board area for compact consumer appliances. Operating from 1.8 V to 3.6 V it also runs directly from a single Li-MnO2 coin cell for remote controls.
Recommended
Low-Power IoT Sensor Nodes
For battery-powered IoT sensors the PIC16LF1554-E/SL combines eXtreme Low Power (XLP) technology with the 1.8 V to 3.6 V supply range to deliver tens of nanoamps in sleep mode while still supporting periodic wake-and-sample cycles. A typical soil-moisture sensor node could power the ADC, take 50 readings, transmit a UART packet and return to sleep under 100 nA average current. Hardware CVD also acts as a built-in ADC guard for ratiometric sensors such as resistive bridges. The 14-SOIC footprint is small enough for in-line cable-mounted modules and the 7 KB Flash comfortably fits BLE/Zigbee co-driver stubs.
Recommended
Consumer-Appliance User Interfaces
Household appliances with glass-front panels rely on capacitive touch plus a small MCU. The PIC16LF1554-E/SL drives 8 to 11 touch electrodes through CVD, runs a UART message to the main control board, and stays under 20 mA active current. Its -40C to +125C (-E) temperature grade tolerates the inside of a steam oven or induction-coil enclosure, and the wide 1.8-3.6 V supply accepts the post-regulator rail of a rectified SMPS. Because the part is RoHS compliant in a 14-SOIC, the same PCB line can build both mechanical-knob and touch-front variants with a BOM swap.
Recommended
Industrial Control Panels
Industrial-panel backplates often need a local MCU for status LEDs, beep-on-event and a small keypad. The PIC16LF1554-E/SL offers 12 I/O, two PWM channels and EUSART for an RS-485 link, plus 7 KB Flash to host command-set firmware. The -E temperature grade survives -40C cold-storage start-ups and +125C cabinet heat. Its 10-bit ADC reads 4-20 mA loopback resistor voltages and the CVD can serve as a coarse humidity baseline. Through-hole and SOIC variants in the same die reduce inventory across panel families.
Recommended
Battery-Operated Toys and Wearables
A wearable activity band or children's toy needs an MCU that wakes on touch or motion and stays asleep the rest of the time. The PIC16LF1554-E/SL pairs the internal 32 kHz LF oscillator with nanoWatt sleep so a 200 mAh CR2032 cell can last more than a year. Its 14-SOIC package fits inside a 25 mm diameter molded enclosure, and 7 KB Flash holds animation tables and gesture state machines. Hardware CVD can replace mechanical buttons entirely, raising the IP rating against sweat or splash.
Recommended
Smart Switches and Lighting Touch Panels
Wall-mounted smart-light switches need a low-power MCU behind a glass face and a UART or RF link to the hub. The PIC16LF1554-E/SL scans 4 to 8 capacitive pads, drives the relay or TRIAC via one of its two PWM peripherals, and reports state changes over EUSART to a paired radio module. The -40C to +125C grade ensures reliability in unheated corridors, and the 1.8-3.6 V range allows direct connection to a small energy-harvesting supply. CFD hardware makes the touch UI robust against faceplate overlays up to 4 mm thick.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1554-E/SL β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1554-I/SL | PIC16LF1554-E/P | PIC16LF1559-E/SL |
|---|---|---|---|---|
| Package | 14-SOIC | 14-SOIC | 14-PDIP | 14-SOIC |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 7 KB | 7 KB | 7 KB | 7 KB |
| SRAM | 512 B | 512 B | 512 B | 512 B |
| Max CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating 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 |
| Operating Temperature | -40C to +125C | -40C to +85C | -40C to +125C | -40C to +125C |
| ADC | 2 x 10-bit, 11 channels, CVD | 2 x 10-bit, 11 channels, CVD | 2 x 10-bit, 11 channels, CVD | 2 x 10-bit, more analog channels, CVD |
Key Differentiators
- Hardware CVD touch support eliminates external touch IC BOM (vs PIC16LF1554-I/SL with external CVD-discrete RC implementation)
- Wider extended temperature grade than -I variant (vs PIC16LF1554-I/SL)
- Native 14-SOIC footprint shared with PIC16F family (vs PIC16LF1554-E/P 14-PDIP)
Design Notes
Place a 100 nF X7R ceramic bypass capacitor within 2 mm of the VDD pin (pin 1) in parallel with a 1 uF bulk capacitor at the supply plane. The PIC16LF1554-E/SL's XLP sleep current is rated at microampere levels, so a noisy or shared supply rail will dramatically inflate the average quiescent draw and shorten battery life. Use a low-Iq LDO such as Microchip MCP1700 for best performance.
Many broken capacitive-touch prototypes come from omitting the CVD guarding traces or running them too close to high-frequency signals (switching converters, RF traces, or even the clock trace). Route a guard ring tied to a fixed voltage around each touch electrode and pour a ground plane one trace-space away beneath the sensor pads, otherwise humidity drift or hand-proximity noise will desensitize the touch UI.
Keep the ICSP clock (RA1/ICSPCLK) and ICSP data (RA0/ICSPDAT) traces shorter than 50 mm and avoid series resistors in the ICSP path; production programming problems are often solved by routing these to accessible test pads. Also place a 4.7 kohm pull-up on MCLR/RA3 for in-circuit programming reliability; the -E extended temperature grade greatly helps if the board sees wide thermal cycling.
Compliance Information
RoHS compliant per Microchip product page. Datasheet doc number 40001761E. AEC-Q100 not applicable (consumer/industrial MCU, not automotive qualified).
