PIC16LV54A-02I/SO - 8-bit MCU, 768B OTP, 2MHz, 18-SOIC | Microchip
MPN: PIC16LV54A-02I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.55 | $25.50 |
| 100 | $2.18 | $218.00 |
| 500 | $1.92 | $960.00 |
| 1,000 | $1.72 | $1,720.00 |
PIC16LV54A-02I/SO Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals on one silicon die. Within the broader taxonomy, the PIC16LV54A belongs to the 8-bit MCU class, which itself falls under microcontrollers, integrated circuits, and ultimately semiconductors. The PIC architecture uses a RISC-like instruction set with 12-bit wide opcodes and an 8-bit data path, achieving 2:1 code compression over typical 8-bit CISC competitors.
Key features include 33 single-word instructions (industry-standard PIC instruction set), seven or eight special-function hardware registers, direct/indirect/relative addressing modes for both data and instructions, and low-power CMOS technology. The device consumes very low quiescent current in standby mode, making it suitable for battery-powered and energy-constrained applications. The 8-bit timer/counter TMR0 with a programmable prescaler supports timing, event counting, and simple PWM generation.
Technically, the PIC16LV54A uses a Harvard architecture with separate program and data buses, enabling simultaneous instruction fetch and data access. The OTP (one-time programmable) memory supports field programming via standard Microchip development tools. Internal oscillator options and external clock input flexibility allow designers to trade off cost, accuracy, and power consumption. The two-level hardware stack limits call depth, which is typical for low-pin-count baseline PIC microcontrollers.
Typical applications include battery-powered sensor interfaces, low-cost consumer electronics, appliance controllers, simple LED driving circuits, and industrial automation edge devices. Its 12 I/O pins, small footprint, and low-voltage operation also suit it for handheld instruments and wearable accessories where power efficiency and PCB area are critical.
When designing with the PIC16LV54A-02I/SO, ensure VDD decoupling with 100 nF ceramic capacitors placed close to the supply pins. For OTP programming, leave the MCLR/VPP pin accessible on the PCB. Stack depth limitation requires careful coding - avoid nested subroutines beyond two levels. For new designs, consider the flash-based PIC16F54-I/SO as an alternative, which offers in-circuit reprogrammability in the same 18-SOIC footprint.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. The cross-reference data is sourced from live distributor and cross-reference tools, providing verified parametric similarity for engineers evaluating second-source options.
Drop-in alternatives for PIC16LV54A-02I/SO — 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 PIC16LV54A-02I/SO (same form factor and footprint) — differing in Program Memory Size, Timers, Mounting Type, Package, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F54-I/SO
✅ Drop-In✓ In Stock
$0.977 / Unit
View Datasheet →PIC16LV54A-02/SO
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →PIC16LV54AT-02I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16C54A-02/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16LV54A-02I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 768 B (512 × 12-bit words) |
| Data RAM | 25 B |
| Maximum Clock Speed | 2 MHz |
| Instruction Set Width | 12-bit wide opcodes |
| Data Path Width | 8-bit |
| I/O Pins | 12 |
| Timers | 1 × 8-bit (TMR0 with prescaler) |
| Hardware Stack Depth | 2 levels |
| Watchdog Timer | Yes |
| Supply Voltage (VDD) | 2 V to 3.8 V |
| Operating Temperature Range | -40 °C to +85 °C (Industrial, 'I' suffix) |
| Package | 18-pin SOIC (SO) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16LV54A-02I/SO Pin Configuration
| Pin 1 | RA2 — Bidirectional I/O pin, Port A bit 2 |
| Pin 2 | RA3 — Bidirectional I/O pin, Port A bit 3 |
| Pin 3 | RA0 — Bidirectional I/O pin, Port A bit 0 |
| Pin 4 | RA1 — Bidirectional I/O pin, Port A bit 1 |
| Pin 5 | MCLR/VPP — Master Clear (Reset, active low) / Programming voltage input |
| Pin 6 | VSS — Ground reference |
| Pin 7 | OSC1 — Oscillator input / external clock input |
| Pin 8 | OSC2 — Oscillator output |
| Pin 9 | RC0 — Bidirectional I/O pin, Port C bit 0 |
| Pin 10 | RC1 — Bidirectional I/O pin, Port C bit 1 |
| Pin 11 | RC2 — Bidirectional I/O pin, Port C bit 2 |
| Pin 12 | RC3 — Bidirectional I/O pin, Port C bit 3 |
| Pin 13 | RC4 — Bidirectional I/O pin, Port C bit 4 |
| Pin 14 | RC5 — Bidirectional I/O pin, Port C bit 5 |
| Pin 15 | RC6 — Bidirectional I/O pin, Port C bit 6 |
| Pin 16 | RC7 — Bidirectional I/O pin, Port C bit 7 |
| Pin 17 | VDD — Positive supply voltage (2 V to 3.8 V) |
| Pin 18 | RB0 — Bidirectional I/O pin, Port B bit 0 |
Typical Applications
PIC16LV54A-02I/SO is suitable for 6 applications: Battery-Powered Sensor Interface, Consumer Appliance Control, LED Driver and Lighting Controller, Industrial Edge Sensor Module, Remote Control and Wireless HID, Smart Home Edge Node.
Battery-Powered Sensor Interface
The PIC16LV54A-02I/SO is ideally suited for battery-powered sensor interface nodes where low quiescent current and a 2 V to 3.8 V supply match single-cell Li-ion or 2×AA battery chemistries. Its 12 GPIO pins can directly drive low-power sensors, signal-conditioning circuits, and an analog frontend, while the SLEEP instruction plus watchdog-timer wake-up enables multi-year battery life. With 25 bytes of RAM and 768 bytes of OTP, the part handles periodic sampling, threshold detection, and simple state-machine control without external memory. The 2 MHz clock is sufficient for slow-loop sensor polling at 100 ms intervals typical in environmental and remote-monitoring products. The PIC16LV54A's low-voltage CMOS design and 18-SOIC footprint enable compact PCBAs suited to wearable and IoT edge nodes.
Recommended
Consumer Appliance Control
The PIC16LV54A-02I/SO fits cost-sensitive consumer appliances such as coffee makers, small kitchen devices, and personal-care products where BOM cost, footprint, and reliability matter more than processing throughput. Its 12 I/Os can scan keypads, drive LED indicators, control relays or TRIACs, and read switches. Industrial temperature range (-40 °C to +85 °C) handles under-cabinet and garage installations where ambient temperatures swing. The OTP memory locks firmware at production, preventing end-user tampering. The 8-bit TMR0 provides timing for debounce, PWM dimming, and motor-control loops. The 18-SOIC package supports automated SMT assembly, lowering per-unit manufacturing cost for high-volume appliance lines.
Recommended
LED Driver and Lighting Controller
In LED driving and lighting-control applications, the PIC16LV54A-02I/SO delivers sufficient GPIO and timer resources for on/off control, dimming, and color-mixing routines. The TMR0 with prescaler supports software-PWM generation at low duty cycles, suitable for indicator LEDs and decorative lighting strips. Its 2 V to 3.8 V supply can directly power low-voltage LED chains without additional regulators. The 33-instruction PIC baseline set simplifies firmware development for blink patterns, chase effects, and brightness curves. Industrial temperature rating supports outdoor signage and architectural lighting fixtures. With OTP memory, lighting control firmware is locked at production, eliminating field-update concerns for fixed-pattern lighting products.
Recommended
Industrial Edge Sensor Module
For industrial edge sensor modules, the PIC16LV54A-02I/SO provides the reliability and temperature range needed at the network edge where PLCs and field I/O operate. Its 12 I/Os interface to 4-20 mA loops, dry-contact switches, and small signal-conditioning frontends. The 768-byte OTP memory holds configuration parameters and simple diagnostic logic. Watchdog timer ensures recovery from brown-out and EMI events common in industrial switchgear and motor cabinets. The Harvard RISC architecture and 200 ns instruction execution (at 2 MHz, approximate based on PIC16C5X timing) yield deterministic control-loop latency. The 18-SOIC footprint enables compact DIN-rail-mountable PCBs with conformal coating compatibility.
Recommended
Remote Control and Wireless HID
The PIC16LV54A-02I/SO is a strong fit for handheld remote controls, key fobs, and wireless HID devices where battery life and small size are paramount. Its low-voltage 2 V to 3.8 V supply draws from coin-cell or single-AAA batteries, while SLEEP mode and watchdog-driven wake-up extend runtime to multi-year timescales. The 12 I/Os scan matrix keypads (4×3 = 12 keys exactly) without external scan logic, and TMR0 generates carrier frequencies for IR or sub-GHz transmitter ICs. OTP memory locks pairing and protocol constants at production. The 18-SOIC footprint is small enough for wearable and key-fob form factors. Industrial temperature range covers outdoor and automotive interior usage scenarios.
Recommended
Smart Home Edge Node
In smart-home edge nodes such as simple thermostats, occupancy sensors, and door/window contact sensors, the PIC16LV54A-02I/SO delivers the minimum-viable compute and I/O at the lowest BOM cost. The 12 GPIOs handle pushbuttons, reed switches, PIR sensors, and small indicator LEDs directly. Its 2 V to 3.8 V supply aligns with single-coin-cell or 2×AAA battery packs typical of wireless sensor nodes. The 768-byte OTP memory holds simple state machines and timing algorithms. Combined with a low-power sub-GHz radio module, it can form multi-year-battery-life wireless sensor networks using the SLEEP + watchdog wake-up pattern. The 18-SOIC enables compact PCBAs for in-wall and ceiling-mount enclosures.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LV54A-02I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F54-I/SO | PIC16LV54A-02/SO | PIC16LV54AT-02I/SO | PIC16C54A-02/SO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC | 18-SOIC - same | 18-SOIC - same | 18-SOIC - same | 18-SOIC - same |
| Program Memory | 768 B OTP | 768 B Flash | 768 B OTP | 768 B OTP | 768 B OTP |
| Maximum Clock Speed | 2 MHz | 20 MHz | 2 MHz | 2 MHz | 2 MHz |
| Supply Voltage | 2 V to 3.8 V | 2 V to 5.5 V | 2 V to 3.8 V | 2 V to 3.8 V | 4.5 V to 5.5 V |
| Temperature Range | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | 0 °C to +70 °C (Commercial) | -40 °C to +85 °C (Industrial) | 0 °C to +70 °C (Commercial) |
| I/O Pins | 12 | 12 | 12 | 12 | 12 |
| Data RAM | 25 B | 25 B | 25 B | 25 B | 25 B |
| Memory Type | OTP (one-time programmable) | Flash (reprogrammable) | OTP | OTP | OTP |
Key Differentiators
- Low-voltage 2 V to 3.8 V operation in same 18-SOIC footprint (vs PIC16C54A-02/SO)
- OTP memory for low-cost volume production (vs PIC16F54-I/SO)
- Industrial temperature range (-40 °C to +85 °C) (vs PIC16LV54A-02/SO)
Design Notes
Place a 100 nF ceramic decoupling capacitor as close as possible to the VDD pin (pin 17) of the PIC16LV54A-02I/SO, with a low-impedance ground return to VSS (pin 6). For battery-powered designs with peak loads above 50 mA, add a 10 µF bulk capacitor to prevent VDD sag during GPIO transitions. The 'LV' variant operates down to 2 V, but verify at cold temperatures that battery voltage stays above 2.0 V under worst-case load. According to Microchip datasheet guidance, average quiescent current in SLEEP is in the microamp range, enabling multi-year battery life when SLEEP + watchdog-timer wake-up is used.
The PIC16LV54A hardware stack is only 2 levels deep, so deeply nested subroutine calls will silently overwrite the return PC. Restructure code to keep call depth ≤ 2 or convert nested logic to iterative state machines. OTP memory cannot be erased, so verify code on a PIC16F54-I/SO or windowed PIC16C5X before committing to OTP. The MCLR pin (pin 5) is shared with VPP programming voltage - ensure the MCLR pull-up resistor does not interfere with the programmer's drive of the VPP rail. Brown-out detection is not present on all PIC16C5X variants; verify in the device-specific datasheet section.
For the 18-SOIC footprint, use a ground plane under the MCU to provide low-impedance VSS return and EMI shielding. Keep the OSC1/OSC2 traces short and surround them with ground pour if using a crystal oscillator; add a 1 MΩ parallel resistor across the crystal for stable start-up. The MCLR/VPP trace must be accessible for in-circuit programming - do not place it under the MCU or under tall components. If using an external RC oscillator, place the R and C close to the OSC1 pin to minimize parasitic capacitance. Leave test pads on VDD, VSS, and one GPIO for in-circuit debug and production test.
Compliance Information
RoHS compliant per Microchip product page. Industrial temperature grade ('I' suffix) supports -40 °C to +85 °C. Not AEC-Q100 qualified - PIC16F54-I/SO with automotive-grade variants recommended for automotive applications.