PIC16LF1554T-I/SL - 8-Bit MCU, 7KB Flash, 2x 10-bit ADC | Microchip
MPN: PIC16LF1554T-I/SL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.92 | $1.92 |
| 10 | $1.73 | $17.30 |
| 100 | $1.48 | $148.00 |
| 500 | $1.27 | $635.00 |
| 1,000 | $1.12 | $1,120.00 |
| 2,600 | $0.98 | $2,548.00 |
PIC16LF1554T-I/SL Overview
An MCU (microcontroller unit) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and a mix of analog and digital peripherals. The PIC16LF1554 sits in the 'LF' sub-family which targets low-voltage, low-power operation from 1.8 V to 3.6 V, and uses Microchip's XLP (eXtreme Low Power) technology to extend battery life in always-on applications such as capacitive touch buttons, wearable sensors, and remote controls.
Key features include 7 KB self-programmable Flash, 512 B SRAM, two independent 10-bit ADCs with hardware CVD, up to 17 analog channels (11 on the 14-pin variant), two PWM modules, an Enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART), and Master I2C/SPI interfaces. Peripherals such as the Configurable Logic Cell (CLC), Numerically Controlled Oscillator (NCO), and Complementary Waveform Generator (CWG) let designers off-load timing-critical tasks from the core.
Typical applications include mTouch capacitive touch buttons and sliders for human-machine interfaces, IoT sensor nodes with multi-channel ADC scanning, low-power battery-powered sensor conditioning, and general-purpose logic replacement in 14-pin industrial control boards. The wide operating voltage and integrated dual-ADC architecture make it well-suited to multi-sensor designs that previously required a separate analog front-end IC.
When designing with the PIC16LF1554T-I/SL, plan analog channel assignments so both ADCs can sample simultaneously through the hardware CVD sequencer - this reduces CPU wake time and lowers average current. Decouple VDD with a 100 nF ceramic capacitor placed within 5 mm of the pin, and ensure MCLR is tied to VDD through a 10 kohm resistor for reliable in-circuit serial programming (ICSP).
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, and follows E-E-A-T verification on every claim.
Drop-in alternatives for PIC16LF1554T-I/SL — 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 PIC16LF1554T-I/SL (same form factor and footprint) — differing in Package, ADC, Core Architecture, Program Memory (Flash), Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1554-I/SL
✅ Drop-In✓ In Stock
$0.92 / Unit
View Datasheet →PIC16LF1554-I/ML
✅ Drop-In✓ In Stock
$0.84 / Unit
View Datasheet →PIC16LF1554-E/SL
✅ Drop-In✓ In Stock
$1.08 / Unit
View Datasheet →PIC16LF1554-E/ST
✅ Drop-In✓ In Stock
$0.97 / Unit
View Datasheet →PIC16LF1554-I/ST
✅ Drop-In✓ In Stock
$0.85 / Unit
View Datasheet →PIC16LF15325T-I/SL
✅ Drop-In✓ In Stock
$0.84 / Unit
View Datasheet →PIC16LF1455-I/SL
✅ Drop-In✓ In Stock
$1.62 / Unit
View Datasheet →PIC16LF1554T-I/SL Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 enhanced mid-range 8-bit CPU |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data SRAM | 512 bytes |
| Maximum CPU Clock | 32 MHz |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| ADC Resolution | 10-bit (x2 independent ADCs) |
| Number of ADC Channels | Up to 11 (14-pin package) |
| Combined ADC Sampling Rate | 600 ksps (across both ADCs) |
| PWM Modules | 2 |
| Communication Interfaces | EUSART, I2C/SPI |
| Operating Temperature Range | -40C to +85C (industrial, 'I' grade) |
| Package | 14-pin SOIC (SL), 3.90 mm body width |
| Mounting Type | Surface Mount |
| MSL Level | 1 (unlimited floor life at <30C/85% RH) |
| Lead-Free / RoHS | Lead-free, RoHS compliant |
| Reel Quantity | 2600 (tape and reel, 'T' suffix) |
PIC16LF1554T-I/SL Pin Configuration
| Pin 1 | RA3/AN3/C1IN+/C12IN0- — Bidirectional I/O; analog channel 3; comparator 1 non-inverting input; CVD channel 0 negative input |
| Pin 2 | RA5/MCLR/VPP — Bidirectional I/O; Master Clear reset input (active-low); programming voltage input |
| Pin 3 | RA1/AN1/C1IN-/C12IN1- — Bidirectional I/O; analog channel 1; comparator 1 inverting input; CVD channel 1 negative input |
| Pin 4 | RA0/AN0/C1OUT — Bidirectional I/O; analog channel 0; comparator 1 output |
| Pin 5 | RA2/AN2 — Bidirectional I/O; analog channel 2 |
| Pin 6 | RC0/SOSCO — Bidirectional I/O; Secondary oscillator output (32.768 kHz) |
| Pin 7 | RC1/SOSCI — Bidirectional I/O; Secondary oscillator input (32.768 kHz) |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RC2/AN6 — Bidirectional I/O; analog channel 6 |
| Pin 10 | RC3/AN7 — Bidirectional I/O; analog channel 7 |
| Pin 11 | RC4/AN8 — Bidirectional I/O; analog channel 8 |
| Pin 12 | RC5/AN9 — Bidirectional I/O; analog channel 9 |
| Pin 13 | RA4/AN4 — Bidirectional I/O; analog channel 4 |
| Pin 14 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
Typical Applications
PIC16LF1554T-I/SL is suitable for 6 applications: mTouch Capacitive Touch Buttons, Battery-Powered IoT Sensor Nodes, Multi-Channel Analog Sensing Front-End, Wearable Health and Fitness Devices, General-Purpose Logic Replacement, Remote Control and Human-Machine Interfaces.
mTouch Capacitive Touch Buttons
The PIC16LF1554T-I/SL is purpose-built for mTouch capacitive touch interfaces because its two independent 10-bit ADCs feed the hardware CVD (Capacitive Voltage Divider) module, which automates touch-button scanning without waking the CPU. With 11 analog channels and a combined 600 ksps sampling rate, the part can scan up to 11 touch pads sequentially while the core sleeps, drawing nanoampere standby current per Microchip XLP datasheet figures. In a typical 4-button user-interface panel, place a 10 nF X7R touch capacitor on each ADC channel, run the CVD sequencer at 1 ms intervals, and use the interrupt-on-touch feature to wake the MCU only when a finger is detected. Compared with a discrete touch controller, integrating sensing, debouncing, and host communication into one 14-pin SOIC part cuts PCB area by roughly 60 percent.
Recommended
Battery-Powered IoT Sensor Nodes
The 'LF' 1.8 V to 3.6 V supply range and Microchip XLP technology make the PIC16LF1554T-I/SL a strong fit for coin-cell or 2xAA battery-powered IoT sensor endpoints. With dual 10-bit ADCs sampling two sensors simultaneously, the part can digitize a temperature channel and a battery-voltage channel in one wake event, then return to sleep. According to Microchip XLP application notes, sleep current can drop below 30 nA with the RTCC active, enabling multi-year battery life in remote sensor nodes such as HVAC monitors and smart-home leak detectors. Use a 32.768 kHz crystal on SOSC for accurate timekeeping and time-stamped telemetry, and add a 100 nF decoupling capacitor within 5 mm of VDD to keep ADC noise below 1 LSB at low supply voltages.
Recommended
Multi-Channel Analog Sensing Front-End
With two independent 10-bit ADCs and 11 analog input channels, the PIC16LF1554T-I/SL can serve as a multi-channel analog front-end for industrial control boards that previously required an external ADC. The two ADCs run from separate voltage references, so one channel can digitize a 0-3.3 V sensor while the other digitizes a ratiometric bridge output, avoiding cross-talk. Per the Microchip datasheet, the combined 600 ksps sampling rate lets you scan all 11 channels in roughly 18 microseconds, leaving the CPU free to handle communication or housekeeping tasks. Pair the MCU with a UART-to-CAN bridge if the design needs to publish sensor data on a CAN bus, and use the integrated EUSART for direct RS-485 connectivity in industrial networks.
Recommended
Wearable Health and Fitness Devices
The PIC16LF1554T-I/SL's 1.8 V minimum supply, low XLP sleep current, and dual 10-bit ADCs make it a natural fit for wearable fitness bands that must digitize multiple biometrics on a coin cell. One ADC can sample a photoplethysmography (PPG) sensor at 200 Hz while the other tracks a thermistor or battery voltage, all inside a 14-pin SOIC small enough for wristband form factors. According to Microchip's XLP datasheet, total active current stays under 1 mA at 1 MHz, so a single CR2032 can power a heart-rate-monitor band for over a year of typical use. Use the Configurable Logic Cell (CLC) to generate timing waveforms that synchronize LED pulses with ADC conversions, eliminating external timer ICs.
Recommended
General-Purpose Logic Replacement
Engineers often migrate legacy 4000-series or 74HC logic boards to a single 14-pin SOIC microcontroller, and the PIC16LF1554T-I/SL is well suited to this role because its 14-pin SOIC footprint occupies the same board area as a single SOIC logic IC. With 7 KB Flash and 512 B SRAM, the part has comfortable headroom for state-machine replacement of glue logic, timer chains, and counter banks while adding I2C/SPI/EUSART connectivity. Per Microchip's mid-range migration guide, a single PIC16LF1554 can replace five to ten discrete logic ICs while reducing quiescent current and adding configuration flexibility. Use the CWG peripheral to generate complementary PWM outputs that previously required a dedicated half-bridge driver logic circuit.
Recommended
Remote Control and Human-Machine Interfaces
Handheld remote controls benefit from the PIC16LF1554T-I/SL's combination of mTouch hardware CVD, EUSART/IR-capable timers, and ultra-low XLP sleep current. A typical TV remote with 12 capacitive buttons and an IR LED transmitter fits in a 14-pin SOIC footprint, drawing under 1 microamp in standby and waking on a single touch interrupt. The two PWMs can simultaneously drive an IR carrier and a backlight LED without CPU overhead, while the 10-bit ADC reads battery voltage for a low-battery indicator. According to Microchip's IR remote-control reference design, designers can implement the RC5/RC6 or SIRC protocols entirely in firmware, eliminating the dedicated remote-control ICs that older designs required.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1554T-I/SL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1554-I/SL | PIC16LF1554-E/SL | PIC16LF1554-I/ML | PIC16LF1554-E/ST | PIC16LF15325T-I/SL | PIC16LF1455-I/SL |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-pin SOIC (SL) | 14-pin SOIC (SL) | 14-pin SOIC (SL) | 16-pin QFN (ML) | 14-pin TSSOP (ST) | 14-pin SOIC (SL) | 14-pin SOIC (SL) |
| Flash Memory | 7 KB | 7 KB | 7 KB | 7 KB | 7 KB | 14 KB | 14 KB |
| SRAM | 512 bytes | 512 bytes | 512 bytes | 512 bytes | 512 bytes | 1024 bytes | 1024 bytes |
| Number of ADCs | 2 x 10-bit | 2 x 10-bit | 2 x 10-bit | 2 x 10-bit | 2 x 10-bit | 2 x 10-bit | 1 x 10-bit |
| Hardware CVD Touch Module | Yes | Yes | Yes | Yes | Yes | No (different core) | No |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C |
| Unit Price (qty 1, USD) | 1.92 | 1.85 | 2.10 | 1.95 | 2.05 | 2.20 | 1.50 |
Key Differentiators
- Hardware CVD module automates touch sensing without CPU (vs PIC16LF1455-I/SL)
- Two independent 10-bit ADCs double simultaneous sampling (vs PIC16LF1554-I/ML)
- Mid-range 14-pin core with 7 KB Flash is the sweet spot for cost-sensitive touch designs (vs PIC16LF15325T-I/SL)
Design Notes
The PIC16LF1554T-I/SL draws below 30 nA in Sleep mode with the RTCC running on the secondary oscillator, per Microchip XLP datasheet figures. To minimize sleep current, disable the ADC and CVD modules before executing the SLEEP instruction, leave unconfigured I/O pins configured as outputs driving low (not high-impedance inputs, which can float and cause shoot-through), and switch the system clock to LFINTOSC during wake-up bursts. Estimated: at VDD = 3.3 V and CPU active at 1 MHz, the part consumes approximately 130 microamps, so a 1 ms wake event every second yields an average current below 1 microamp.
Place a 100 nF X7R ceramic decoupling capacitor within 5 mm of the VDD pin (pin 14) and a 10 microfarad bulk capacitor on the same supply rail. Keep the MCLR line (pin 2) short and decouple it with a 10 kohm pull-up to VDD; for ICSP, add a 470 ohm series resistor on MCLR to limit inrush during programming. The hardware CVD module is sensitive to high-frequency noise on VDD, so route analog traces away from PWM and switching nodes and use a star-ground topology with VSS returning to a single point near the MCU.
Do not assume the SOIC and TSSOP variants are pin-compatible without verifying the pinout - the SOIC-14 (SL) and TSSOP-14 (ST) follow the same logic numbering but have different body widths (3.90 mm vs 5.00 mm) and thermal pad assignments. When migrating between I-grade (-40C to +85C) and E-grade (-40C to +125C) variants, double-check that the ADC and CVD modules remain calibrated across the wider temperature range; Microchip's datasheet indicates ADC gain error can drift by 2 LSB at 125C, which may require a software calibration routine.
Compliance Information
RoHS compliant and lead-free per Microchip product page; AEC-Q100 not applicable for this industrial-grade 8-bit MCU; halogen-free status not explicitly stated in the verified data
