PIC16LV54A-02I/P - 2MHz 8-bit OTP MCU 18-PDIP | Microchip
MPN： PIC16LV54A-02I/P ✓ 啟用中PIC16LV54A-02I/P 概覽
An 8-bit microcontroller (MCU) is a small computer-on-a-chip integrating a CPU, RAM, non-volatile program memory (ROM/Flash/OTP), and peripheral I/O on a single die. Within the embedded hierarchy, the PIC16LV54A belongs to the OTP-based, ROM-less baseline MCU category -> 8-bit microcontroller -> microcontroller -> embedded processor -> semiconductor IC. The 'LV' suffix denotes the low-voltage variant, enabling battery-powered and portable designs where 5V rails are unavailable.
Key features include a 12-bit wide instruction word with 2:1 code compression over typical 8-bit CISC MCUs, a two-level deep hardware stack, and a single 8-bit timer/counter (TMR0) with an 8-bit prescaler. Direct, indirect, and relative addressing modes simplify assembly coding for compact applications. The seven or eight special-function hardware registers are mapped into the data memory, and the instruction set requires only 33 single-word instructions to learn. Industrial temperature grade (-40C to +85C) ensures reliable operation in factory and automotive-cabin environments.
Technically, the PIC16LV54A uses Microchip's classic Harvard architecture with separate program and data buses, allowing instruction fetch and data access in a single clock cycle. The 2 MHz oscillator input (the '-02' speed suffix) yields a 2 MHz instruction rate at 4:1 division in standard mode, sufficing for slow-loop control, keypad scanning, and LED multiplexing tasks. The 'A' revision brings enhanced electrical characteristics and the 'I' suffix denotes industrial temperature range. The OTP program memory allows one-time programming via a device programmer, making this part ideal for low-to-medium volume production where mask-ROM NRE is not justified.
Typical applications include low-cost consumer appliances, remote controls, toy electronics, sensor signal conditioning, simple motor and relay drivers, LED lighting controllers, and battery-powered timers. The wide operating voltage makes it suitable for 2x AA / single Li-ion cell systems where 3.3V is the native supply.
When designing with the PIC16LV54A-02I/P, note that OTP parts cannot be reprogrammed in-circuit; firmware must be fully validated on a windowed PIC16CR54A or flash-based PIC16F54 equivalent before committing to OTP. The 18-pin PDIP through-hole footprint simplifies prototyping on breadboards and through-hole PCBs, but for SMT production migrate to the PIC16LV54A-02I/SO (SOIC-18) variant.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes beyond the manufacturer datasheet summary, including parametric proximity data for cross-brand 8-bit MCU equivalents.
直接替換替代品，適用於 PIC16LV54A-02I/P — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC16LV54A-02I/P （相同外形與佔位） — 差異在於 Mounting Type, Package, Program Memory Size, Timers, Operating Temperature Range.
PIC16F54-I/P
✅ 直接替換聯絡詢價
查看資料表 →PIC16LV54A-02I/SO
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC16C54A-02I/P
✅ 直接替換📋 參考替代品（不在目錄中）
PIC16C54A-02/P
✅ 直接替換📋 參考替代品（不在目錄中）
PIC16HV540-I/P
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC16LV54A-02I/P 最大額定值與電氣特性
| Product Type | 8-bit RISC Microcontroller (MCU) |
| Series | PIC16C5X / Enhanced PIC16LV5X |
| Program Memory Size | 768 B (512 x 12) OTP |
| RAM Size | 25 B |
| CPU Speed | 2 MHz (DC to 2 MHz oscillator) |
| Instruction Word Width | 12-bit |
| 資料匯流排寬度 | 8-bit |
| I/O Pins | 12 |
| Timers | 1 x 8-bit (TMR0) with 8-bit prescaler |
| Hardware Stack | 2-level |
| Supply Voltage (Vdd) | 2.0 V to 3.6 V |
| 工作溫度 | -40 C to +85 C (Industrial) |
| 封裝 | 18-pin PDIP (DIP-18, Through-Hole) |
| 安裝類型 | Through-Hole |
| RoHS 狀態 | Compliant |
| Lead-Free | Yes (Matte Tin plating) |
| MSL 等級 | Not applicable (through-hole package) |
| Number of Instructions | 33 single-word instructions |
| Addressing Modes | Direct, Indirect, Relative |
PIC16LV54A-02I/P 腳位配置
| 腳位 1 | RA2 — Port A bit 2 (bidirectional I/O) |
| 腳位 2 | RA3 — Port A bit 3 (bidirectional I/O) |
| 腳位 3 | RB0 — Port B bit 0 (bidirectional I/O, INT) |
| 腳位 4 | RB1 — Port B bit 1 (bidirectional I/O) |
| 腳位 5 | RB2 — Port B bit 2 (bidirectional I/O) |
| 腳位 6 | RB3 — Port B bit 3 (bidirectional I/O) |
| 腳位 7 | RB4 — Port B bit 4 (bidirectional I/O) |
| 腳位 8 | RB5 — Port B bit 5 (bidirectional I/O) |
| 腳位 9 | RB6 — Port B bit 6 (bidirectional I/O) |
| 腳位 10 | RB7 — Port B bit 7 (bidirectional I/O) |
| 腳位 11 | Vss — Ground reference |
| 腳位 12 | OSC1 — Oscillator input / external clock input |
| 腳位 13 | OSC2 — Oscillator output (crystal mode) |
| 腳位 14 | T0CKI — Timer0 external clock input |
| 腳位 15 | RA0 — Port A bit 0 (bidirectional I/O) |
| 腳位 16 | RA1 — Port A bit 1 (bidirectional I/O) |
| 腳位 17 | /MCLR — Master Clear (Reset, active-low) |
| 腳位 18 | Vdd — Positive supply voltage (2.0V-3.6V) |
典型應用
PIC16LV54A-02I/P 適用於 6 應用s: Battery-Powered Remote Controls, LED Lighting Controllers, Toy and Hobby Electronics, Industrial Timer and Sequencer Modules, Sensor Signal Conditioning Front-Ends, Consumer Appliance Keypad Interfaces.
Battery-Powered Remote Controls
The PIC16LV54A-02I/P fits battery-powered remote controls because its 2.0V-3.6V supply directly supports 2x AA alkaline or single Li-ion coin cell operation without a boost regulator, and its 768-byte OTP memory is sufficient for IR transmission encoding tables, debounce state machines, and keypad scan routines. The 2 MHz instruction rate handles NEC RC-5, and SIRC protocol timing at low current draw. The 12 I/O pins accommodate 8-key matrices plus an IR LED driver, and the industrial -40C to +85C temperature range ensures reliable operation across indoor/outdoor use. Compared to a 5V PIC16C54 which would require a boost converter, the LV variant eliminates one external component and extends battery life.
推薦
LED Lighting Controllers
The PIC16LV54A-02I/P drives LED lighting controllers because its 12 I/O lines can multiplex up to 64 LEDs in an 8x8 charlieplex matrix, while the 25-byte RAM and 768-byte program memory are adequate for chase patterns, dimming algorithms, and button-debounced mode selection. The 2 MHz oscillator supports software PWM dimming at frequencies high enough to eliminate visible flicker. The 2.0V-3.6V supply runs directly from 2x AA or USB-powered 3.3V rails, common in decorative and accent lighting. Compared to a PIC10F200, this part offers more I/O for multi-string installations.
推薦
Toy and Hobby Electronics
The PIC16LV54A-02I/P fits toy and hobby electronics designs where cost is the primary constraint and reprogrammability is unnecessary at production volume. The OTP memory is ideal because toy firmware rarely changes, and the OTP cost advantage (typically 15-20% below flash) compounds at million-unit volumes. The 2.0V-3.6V supply operates from 2x AA cells, which dominate the toy market. The 12 I/O pins handle motor drivers (H-bridge enable lines), speaker PWM, sensor inputs, and trigger buttons. Industrial temperature grade supports outdoor toys and temperature-stressed play environments.
推薦
Industrial Timer and Sequencer Modules
The PIC16LV54A-02I/P builds industrial timer modules because the 8-bit TMR0 with 8-bit prescaler produces accurate timing bases up to several minutes when software-extended, sufficient for relay sequencing, conveyor timing, and machine cycle control. The industrial -40C to +85C temperature range handles factory floor thermal stress, and the 2.0V-3.6V supply accommodates 3.3V industrial backplane rails. The 12 I/O lines drive multiple relay coils, opto-isolated inputs, and status LEDs. The OTP memory locks firmware to prevent unauthorized modification in deployed equipment.
推薦
Sensor Signal Conditioning Front-Ends
The PIC16LV54A-02I/P conditions analog sensor signals at the network edge because its 12 I/O pins accommodate multiple digital sensors (Hall effect, temperature switches, PIR motion detectors) while the 2.0V-3.6V supply runs directly from battery or harvested energy sources. The 2 MHz instruction rate supports simple digital filtering, threshold comparison, and alarm generation in low-bandwidth sensing applications. The OTP memory ensures firmware integrity in unattended sensor deployments. Compared to a PIC16F84A with ADC, this part is cost-optimized for digital-only sensor chains.
推薦
Consumer Appliance Keypad Interfaces
The PIC16LV54A-02I/P interfaces keypads and front-panel buttons in consumer appliances because the 12 I/O pins scan 3x4 or 4x4 matrix keypads with hardware-debounced inputs, and the 25-byte RAM tracks the key state buffer plus mode-selection flags. The 2.0V-3.6V supply runs from 3.3V appliance rails or directly from 2x AA backup batteries. The 2 MHz oscillator supports debounce algorithms without missing user keystrokes. The OTP memory locks UI firmware to production versions. Compared to discrete logic keypad controllers, this MCU adds programmability for product variants with a single PCB.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16LV54A-02I/P — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC16F54-I/P | PIC16LV54A-02I/SO | PIC16C54A-02I/P | PIC16C54A-02/P | PIC16HV540-I/P |
|---|---|---|---|---|---|---|
| Package | PDIP-18 | PDIP-18 - same | SOIC-18 (SMT) | PDIP-18 - same | PDIP-18 - same | PDIP-18 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 768 B OTP | 768 B Flash | 768 B OTP (same die) | 768 B OTP | 768 B OTP | 768 B OTP |
| Supply Voltage | 2.0 V to 3.6 V | 2.0 V to 6.0 V | 2.0 V to 3.6 V (same) | 4.0 V to 5.5 V | 4.0 V to 5.5 V | 3.5 V to 15 V (HV) |
| Max Clock | 2 MHz | 20 MHz | 2 MHz (same) | 2 MHz | 2 MHz | 20 MHz |
| I/O Pins | 12 | 12 (same) | 12 (same) | 12 (same) | 12 (same) | 12 (same) |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Commercial 0C to +70C | Industrial -40C to +85C |
| Memory Type | OTP (One-Time-Programmable) | Flash (reprogrammable) | OTP (same) | OTP (same) | OTP (same) | OTP (same) |
| Approx. Unit Price (qty 1) | $1.92 | $1.85 | $1.78 | $2.05 | $1.65 | $2.40 |
主要差異化特點
- Low-voltage operation down to 2.0V enables direct battery cell operation without boost regulator (對比PIC16C54A-02I/P)
- OTP memory locks firmware to prevent unauthorized modification in deployed systems (對比PIC16F54-I/P)
- Industrial -40C to +85C temperature range covers automotive cabin and factory floor (對比PIC16C54A-02/P)
- Enhanced PIC16LV5X instruction set with 33 instructions provides 2:1 code compression (對比PIC16C54 (pre-enhanced legacy))
設計說明
The PIC16LV54A-02I/P operates from 2.0V to 3.6V; connecting a 5V supply directly will damage the part. For designs migrating from PIC16C54 (4.0-5.5V), add a 3.3V LDO (e.g., MCP1700) on the input rail. Power-on-reset (POR) is internally generated and requires no external RC network. Brown-out reset is NOT available on the PIC16LV5X family; ensure software checks critical state at startup if supply noise is expected. Decouple Vdd with a 100 nF ceramic capacitor placed within 5 mm of pin 18.
OTP memory cannot be erased or reprogrammed; once programmed, the part is locked. A single bit error in production programming destroys the device. Validate firmware thoroughly on a windowed PIC16CR54A or flash-based PIC16F54-I/P development platform before committing to OTP programming. Use Microchip's MPLAB X IDE with a PICkit 3 or ICD 3 for code development. Ensure oscillator configuration bits are correct - selecting the wrong oscillator mode (RC vs XT vs LP) is a common production failure source.
The 18-pin PDIP package has 2.54 mm (0.100 in) pin pitch and is through-hole only. For surface-mount designs, use the SOIC-18 variant PIC16LV54A-02I/SO (note: different package requires PCB rework - this is a SOIC, not a drop-in). Keep the trace between OSC1 (pin 12) and the crystal/oscillator short, and place the crystal load capacitors within 5 mm. The /MCLR pin (17) should have a 10 kohm pull-up to Vdd; adding a 100 nF capacitor to /MCLR filters noise spikes. I/O pin traces should not run parallel to switching power traces to avoid injected noise.
Estimate: at 2 MHz oscillator with 12 pF crystal load and 5 mm trace length, total pin capacitance stays well under the 15 pF PIC16LV5X oscillator spec. For battery-powered designs, unused I/O pins should be configured as outputs and tied low to minimize supply current; floating inputs can draw hundreds of microamps due to CMOS input structures. Configure WDT (Watchdog Timer) for unattended deployments to recover from firmware lockup. Sleep mode current is typically 1 uA at 3V, suitable for coin-cell applications.
合規資訊
RoHS and REACH compliant per Microchip product page. Lead-free matte tin plating. Not AEC-Q100 qualified (consumer/industrial grade); use PIC16F54-E/P or PIC16F88-I/P for automotive applications.
