PIC16LF1554-I/P - 8-bit 32MHz MCU 7KB Flash 14-PDIP | Microchip
MPN: PIC16LF1554-I/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.63 | $1.63 |
| 10 | $1.47 | $14.70 |
| 100 | $1.31 | $131.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $1.05 | $1,050.00 |
PIC16LF1554-I/P Overview
A PIC microcontroller is a class of 8-bit reduced instruction set computing (RISC) microcontrollers built around a Harvard memory architecture, with separate program and data buses. Within the broader semiconductor taxonomy, a PIC sits under microcontroller -> microcontroller unit (MCU) -> embedded processor -> integrated circuit. The 'LF' prefix in this part number designates the low-power (F) process, and the 'XLP' designation (eXtreme Low Power) indicates an optimized sleep current typically below 50 nA, enabling battery-sustained applications such as wireless sensor nodes and wearables.
Key features include a 32MHz internal oscillator providing 125ns instruction execution, two 10-bit ADCs capable of 600 ksps combined sampling across up to 11 analog channels, two PWM modules, an integrated mTouch hardware CVD module, and an operating voltage range of 1.8V to 3.6V. The 14-pin PDIP package is well-suited to breadboarding, education, and through-hole prototype assemblies where surface-mount footprints are inconvenient.
Typical applications include low-power capacitive touch user interfaces (buttons, sliders, proximity sensors), sensor-conditioning front ends, battery-powered IoT endpoints, and consumer white goods where the on-board hardware CVD reduces firmware touch-decoding complexity. The 32MHz core also supports simple digital control loops and protocol generation. Compared to discrete ADC plus MCU solutions, integrating two 10-bit ADCs and a hardware CVD simplifies the BOM and lowers firmware latency in touch-decoded systems.
When designing with this device, ensure the supply decoupling network uses a 100nF ceramic capacitor close to VDD plus a bulk capacitor on the analog rail. For touch applications, follow Microchip application note AN1478 for guard-ring and electrode layout guidance, since PCB parasitic capacitance directly influences CVD performance.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC16LF1554-I/P — 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-I/P (same form factor and footprint) — differing in Package, ADC, Program Memory (Flash), Core Architecture, Maximum CPU Speed.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1554-I/ML
✅ Drop-In✓ In Stock
$0.84 / Unit
View Datasheet →PIC16LF1554-E/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1554-I/SL
✅ Drop-In✓ In Stock
$0.92 / Unit
View Datasheet →PIC16LF1559-I/SL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1554-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1554-I/ST
✅ Drop-In✓ In Stock
$0.85 / Unit
View Datasheet →PIC16LF1554-I/P Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 enhanced mid-range 8-bit RISC |
| Instruction Set | 49 single-word instructions |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data RAM | 512 bytes |
| Maximum CPU Frequency | 32 MHz |
| Instruction Cycle | 125 ns at 32 MHz |
| Operating Voltage (LF) | 1.8 V to 3.6 V |
| ADC Channels | Up to 11 analog channels |
| ADC Resolution | 10-bit x 2 |
| Combined ADC Sampling Rate | 600 ksps |
| PWM Modules | 2 |
| mTouch Hardware CVD | Yes (automated capacitive voltage divider) |
| Package | 14-pin PDIP (P) |
| Mounting Type | Through-Hole |
| Operating Temperature (I grade) | -40 C to +85 C |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC16LF1554-I/P Pin Configuration
| Pin 1 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
| Pin 2 | RA5 — Digital I/O / analog input |
| Pin 3 | RA4 — Digital I/O / analog input |
| Pin 4 | RA3/MCLR — Digital I/O or Master Clear (reset) input |
| Pin 5 | RC5 — Digital I/O |
| Pin 6 | RC4 — Digital I/O |
| Pin 7 | RC3 — Digital I/O / analog input |
| Pin 8 | RC2 — Digital I/O / analog input |
| Pin 9 | RC1 — Digital I/O / analog input |
| Pin 10 | RC0 — Digital I/O / analog input |
| Pin 11 | RA2 — Digital I/O / analog input |
| Pin 12 | RA1 — Digital I/O / ICSPDAT / analog input |
| Pin 13 | RA0 — Digital I/O / ICSPCLK / analog input |
| Pin 14 | VSS — Ground reference |
Typical Applications
PIC16LF1554-I/P is suitable for 6 applications: Capacitive Touch User Interface, Battery-Powered IoT Sensor Node, Consumer White Goods Control Panel, Educational Microcontroller Platform, Industrial Sensor Conditioning Front End, LED Lighting Control Module.
Capacitive Touch User Interface
The PIC16LF1554-I/P is purpose-built for capacitive touch interfaces thanks to its hardware CVD (Capacitive Voltage Divider) module on two 10-bit ADCs at up to 600 ksps combined throughput. Place the IC close to the touch electrodes with a guarded ground ring around each pad and follow Microchip AN1478 layout guidance. Compared to firmware-driven touch decoding on a generic MCU, the on-chip CVD reduces CPU load by 60-70% and frees the 32 MHz MIPS budget for UI animation or BLE stack housekeeping. The 1.8 V minimum supply keeps the design compatible with single-cell Li-ion or two-AA chemistries.
Recommended
Battery-Powered IoT Sensor Node
With the LF process supporting 1.8 V to 3.6 V and XLP sleep currents in the tens of nA range, the PIC16LF1554-I/P suits coin-cell or two-AA sensor nodes that wake periodically to sample and transmit. Use sleep mode between measurements to extend battery life into multi-year ranges, and leverage the 10-bit ADC for direct sensor signal conditioning without an external amplifier. The 7 KB flash is sufficient for a small sensor-fusion firmware image plus a wake-cycle scheduler. Verified Web Data confirms 1.8 V operation at 16 MHz for low-power duty-cycled sensing.
Recommended
Consumer White Goods Control Panel
The PIC16LF1554-I/P drives the control panel of washing machines, microwave ovens, dishwashers, and induction cooktops where capacitive touch buttons replace mechanical switches for sealed, easy-to-clean interfaces. The hardware CVD detects touch through glass or plastic overlays up to a few millimeters thick, and the integrated 10-bit ADC reads NTC temperature sensors for appliance feedback. The 14-pin PDIP package eases through-hole assembly for the appliance PCB, and the -40 C to +85 C industrial temperature range covers unheated enclosure environments.
Recommended
Educational Microcontroller Platform
The 14-pin PDIP package of the PIC16LF1554-I/P fits standard 0.1-inch pitch breadboards and IC sockets, making it ideal for university microcontroller labs and maker tutorials. The 49-instruction enhanced mid-range core is approachable for first-time embedded developers, while the two PWM modules and dual 10-bit ADCs provide meaningful real-world I/O for classroom projects. Programming requires an MPLAB X IDE plus a PICkit 3/4 or Snap programmer; the ICSP interface uses RA0/RA1 pins shared with the ADC.
Recommended
Industrial Sensor Conditioning Front End
Two 10-bit ADCs running at up to 600 ksps combined allow the PIC16LF1554-I/P to multiplex and digitize analog sensor signals from thermocouples, strain gauges, or flow meters in industrial monitoring. The 14-pin PDIP simplifies field-replacement modules where through-hole parts are easier to swap on legacy equipment. Use the two PWM outputs to drive proportional valves or LED indicators while the CPU runs the conditioning firmware. AEC-Q100 qualification is not required for this grade, so industrial non-automotive is the primary qualification target.
Recommended
LED Lighting Control Module
The two PWM modules of the PIC16LF1554-I/P drive LED dimming channels for tunable-white or RGB lighting fixtures, with the 10-bit ADC reading ambient light sensors or potentiometer dim controls. The hardware CVD module can replace mechanical dim wheels with capacitive sliders sealed behind glass. Verified Web Data confirms 3.0 V to 3.6 V nominal operation, which aligns with constant-current LED driver rails. Place decoupling capacitors within 5 mm of VDD/VSS to suppress PWM switching transients.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1554-I/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1554-I/ML | PIC16LF1554-E/P | PIC16LF1554-I/SL | PIC16F1554-I/P |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-PDIP | 16-QFN (4x4) | 14-PDIP | 14-SOIC | 14-PDIP |
| Program Memory | 7 KB Flash | 7 KB Flash | 7 KB Flash | 7 KB Flash | 7 KB Flash |
| Data RAM | 512 B | 512 B | 512 B | 512 B | 512 B |
| Maximum Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage (min) | 1.8 V (LF) | 1.8 V (LF) | 1.8 V (LF) | 1.8 V (LF) | 2.0 V (F) |
| Hardware CVD (mTouch) | Yes | Yes | Yes | Yes | Yes |
| Temperature Grade | I (-40C to +85C) | I (-40C to +85C) | E (-40C to +125C) | I (-40C to +85C) | I (-40C to +85C) |
Key Differentiators
- Hardware CVD module offloads touch decoding (vs PIC16F1455-I/P)
- LF process supports 1.8 V minimum operation (vs PIC16F1554-I/P)
- 14-pin PDIP breadboard compatibility (vs PIC16LF1554-I/ML)
Design Notes
Place a 100 nF ceramic decoupling capacitor within 5 mm of VDD (pin 1) and a bulk capacitor (1-10 uF) on the analog rail. For LF process operation at 1.8 V, ensure the LDO or battery source has less than 50 mV peak-to-peak ripple to avoid corrupting ADC readings. Use the internal 32 MHz HFINTOSC to avoid external clock current draw; the XLP sleep mode drops core current to tens of nA for battery-sustained duty-cycled sensing.
For mTouch capacitive-sensing designs, follow Microchip application note AN1478 (mTouch Design Center). Add a ground guard ring around each touch electrode connected back to a dedicated ADC pin, and keep traces short to minimize parasitic capacitance. Keep digital signal traces (PWM, ICSP) at least 5 mm away from analog touch traces to prevent coupling into the CVD measurement. Place the IC within 50 mm of the touch electrodes for best signal-to-noise ratio.
Do not omit the MCLR pull-up resistor (typically 10 kOhm to VDD) - the device will fail to start reliably in noisy environments. Do not drive VDD below 1.8 V on the LF process or core operation becomes undefined. The ICSP programming pins (RA0/ICSPCLK, RA1/ICSPDAT) must not be pulled low during reset or programming will fail. Avoid routing high-frequency PWM signals adjacent to the analog touch electrodes to prevent false touch events.
Estimated: at maximum operating frequency 32 MHz and 3.6 V supply, core current is approximately 4 mA, yielding power dissipation of about 14 mW. With theta_JA around 70 C/W for the 14-pin PDIP package, the junction temperature rise above ambient is approximately 1 C at 25 C ambient - well within the -40 C to +85 C industrial range. The PDIP package self-heats negligibly under normal mTouch duty cycles.
Compliance Information
RoHS compliant per Microchip product page. Industrial temperature grade -40C to +85C only; not AEC-Q100 qualified for automotive. Choose -Q1 automotive suffix variants for AEC-Q100 requirements.
