PIC16LV54A-02I/SS - 8-bit 2MHz 768B OTP MCU | Microchip | SSOP-20
料号： PIC16LV54A-02I/SS ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.67 | $16.70 |
| 100 | $1.42 | $142.00 |
| 500 | $1.2 | $600.00 |
| 1,000 | $1.05 | $1,050.00 |
PIC16LV54A-02I/SS 概述
What is an 8-bit OTP microcontroller? An OTP microcontroller is a single-chip computer with non-volatile program memory that can be written once and read many times, combining a CPU core, RAM, ROM/EPROM, and peripherals on one die. The PIC16C5x family uses a 12-bit-wide instruction set and an 8-bit data path, providing 2:1 code compression over typical 8-bit MCUs. These MCUs sit inside the broader microcontroller -> RISC -> embedded controller -> semiconductor taxonomy and are descendants of Harvard-architecture microcontrollers.
Key features include a hardware two-level deep stack, direct/indirect/relative addressing modes, an 8-bit real-time clock/counter (TMR0), power-on reset, watchdog timer, and a programmable code-protect bit. The RISC instruction set executes one instruction per instruction cycle (typically four oscillator clocks at 2 MHz), enabling deterministic interrupt response. The device runs from a single supply rail and supports low-power operation suited to battery-backed or always-on control nodes.
Architecture-wise the PIC16LV54A-02I uses a separate code and data space (Harvard architecture) with 12-bit opcodes, an ALU working on 8-bit data, and seven or eight Special Function Registers (SFRs) controlling I/O direction, timers, and reset. Compared to the original PIC16C54, the 'A' revision adds enhanced oscillator stability and the 'LV' (low-voltage) suffix extends operation down to 2.0 V, making it suitable for 2xAA battery or 3.3 V regulated systems.
Typical applications include appliance controls, automotive sub-systems, low-cost sensor interfaces, IR remote transmitters, LED drivers, and battery-powered consumer products. It also fits industrial logic-replacement and small white-goods control boards. A common design tip: provide a decoupling capacitor of 0.1 uF close to VDD and use a 4 MHz ceramic resonator or crystal when higher-speed external timing is needed. This page synthesizes distributor pricing, drop-in PIC16C5x family alternatives, and practical design notes not found in the manufacturer datasheet.
直接替换替代料： PIC16LV54A-02I/SS ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC16LV54A-02I/SS （相同外形与封装尺寸） ——差异在于 Program Memory Type, Program Memory Size, Package, Operating Temperature, Timers.
快速对比工具——选择替代料号进行并排对比：
PIC16LV54AT-02I/SS
✅ 直接替换✓ 有现货
$1.85 / 个
查看数据手册 →PIC16C54A-02I/SS
✅ 直接替换📋 参考替代料（不在目录中）
PIC16C54C-04I/SS
✅ 直接替换✓ 有现货
$1.34 / 个
查看数据手册 →PIC16C54C-04/SS
✅ 直接替换✓ 有现货
$0.65 / 个
查看数据手册 →PIC16F54-I/SS
✅ 直接替换✓ 有现货
$0.68 / 个
查看数据手册 →PIC16LV54A-02I/SS 最大额定值与电气特性
| Architecture | PIC16C5x, 8-bit RISC, Harvard |
| Core | PIC16 |
| Instruction Set Width | 12-bit |
| Data Path Width | 8-bit |
| Maximum Clock Speed | 2 MHz |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 768 B (512 x 12) |
| RAM | 25 B |
| I/O Pins | 12 |
| Stack Depth | 2 levels (hardware) |
| Timers | 1 x 8-bit (TMR0) |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| 工作温度 | -40 C to +85 C (Industrial) |
| 封装 | 20-pin SSOP (Shrink Small Outline Package) |
| 安装类型 | Surface Mount |
| 生命周期状态 | Active |
| RoHS 状态 | Compliant |
PIC16LV54A-02I/SS 引脚配置
| 引脚 1 | RA2 — Bidirectional I/O pin; analog input on some PIC16C5x variants |
| 引脚 2 | RA3 — Bidirectional I/O pin |
| 引脚 3 | RA4/T0CKI — Bidirectional I/O; TMR0 clock input |
| 引脚 4 | /MCLR — Master Clear (reset) input, active-low |
| 引脚 5 | VSS — Ground reference |
| 引脚 6 | RB0/INT — Bidirectional I/O; external interrupt input |
| 引脚 7 | RB1 — Bidirectional I/O pin |
| 引脚 8 | RB2 — Bidirectional I/O pin |
| 引脚 9 | RB3 — Bidirectional I/O pin |
| 引脚 10 | RB4 — Bidirectional I/O pin |
| 引脚 11 | RB5 — Bidirectional I/O pin |
| 引脚 12 | RB6 — Bidirectional I/O pin |
| 引脚 13 | RB7 — Bidirectional I/O pin |
| 引脚 14 | VSS — Ground reference (second VSS pin) |
| 引脚 15 | OSC2/RA6 — Oscillator output; also RA6 I/O on some variants |
| 引脚 16 | OSC1/RA7 — Oscillator input; also RA7 I/O on some variants |
| 引脚 17 | RA0 — Bidirectional I/O pin |
| 引脚 18 | RA1 — Bidirectional I/O pin |
| 引脚 19 | VDD — Positive supply voltage (2.0 V to 5.5 V) |
| 引脚 20 | NC — Not connected (per SSOP-20 package outline) |
典型应用
PIC16LV54A-02I/SS 适用于 7 应用s: Low-Cost Appliance Control, Battery-Powered IR Remote Control, Automotive Sub-System Controller, Sensor Interface Module, LED Lighting Driver, Industrial Logic Replacement, Consumer Toy and Hobby Electronics.
Low-Cost Appliance Control
The PIC16LV54A-02I/SS fits low-cost appliance control because its 2.0-5.5 V VDD range handles 3.3 V regulated rails or 2xAA battery stacks directly, while 12 GPIO pins drive relays, LEDs, and button matrices. The 768B OTP stores fixed control code for washing-machine cycles, toaster timings, or rice-cooker thermal profiles without external memory. The 25B RAM is enough for state-machine variables and timer counts, and the 8-bit TMR0 gives sub-second timing resolution. Compared to a discrete logic-replacement design, the PIC16LV54A-02I/SS reduces PCB area and enables single-chip firmware upgrades through the OTP programming interface.
推荐
Battery-Powered IR Remote Control
For IR remote controls, the PIC16LV54A-02I/SS is well suited because the 'LV' suffix enables 2.0 V operation from a single CR2032 coin cell, extending battery life versus 5 V-only designs. The 2 MHz core executes PWM generation for 38 kHz IR carrier modulation at sufficient resolution, while the 8-bit TMR0 can be reloaded in software to produce NEC or RC5 protocol timings. Low sleep current plus 2-level hardware stack keep wake-from-IR responsiveness under 100 us. Place a 0.1 uF decoupling capacitor within 5 mm of VDD to prevent brown-out during battery sag, and use a single GPIO pin to drive the IR LED through a BJT driver.
推荐
Automotive Sub-System Controller
The PIC16LV54A-02I/SS operates from -40C to +85C industrial grade and supports automotive sub-system roles such as seat-position encoders, mirror-adjust switches, or interior LED dimmers. Its 2 MHz core and 768B OTP can hold fixed protocol handlers for LIN-like local-interconnect signaling when paired with an external LIN transceiver. The 12 I/O pins support 4-bit switch matrix inputs and 8-channel LED driver outputs. For under-the-hood applications above 85C, upgrade to the AEC-Q100-qualified PIC16F family. The /I (industrial) suffix in the part number confirms the -40 to +85C operating range required for cabin electronics.
推荐
Sensor Interface Module
In sensor interface modules, the PIC16LV54A-02I/SS reads analog sensors via an external ADC and forwards digital readings over GPIO bit-banged UART or one-wire protocols. The 25B RAM accommodates averaging buffers for thermistor or photodiode readings, while the 8-bit TMR0 establishes precise sampling intervals. With 768B OTP, designers can implement calibration lookup tables for accurate temperature-to-digital conversion. The 2.0 V VDD minimum lets the device operate directly from a single 1.5 V cell boosted by a low-cost charge pump, ideal for remote sensor nodes that need years of battery life.
推荐
LED Lighting Driver
The PIC16LV54A-02I/SS drives LED arrays via PWM generated by TMR0 interrupts and 12 GPIO pins, providing up to 8 channels of software PWM at 100 Hz refresh for color-mixing or brightness control. The 768B OTP holds fixed lighting patterns and DMX-512-like receiving routines for stage lighting fixtures. The 2.0-5.5 V VDD range works directly from 3.3 V LED driver rails, simplifying power architecture. The SSOP-20 package fits inside small MR16 lamp form factors where PCB area is constrained. Each GPIO can source/sink 25 mA, sufficient for direct low-current LED drive without external transistors.
推荐
Industrial Logic Replacement
For industrial logic-replacement applications, the PIC16LV54A-02I/SS consolidates discrete 74HC logic gates, latches, and timers into a single 20-pin SSOP package, reducing board area and improving long-term availability of legacy functions. The 2 MHz core handles simple state machines, debounced input polling, and pulse-train generation at up to 500 kHz. With 12 I/O pins, designers can replace 3-5 standard logic packages per node while keeping pin counts manageable. The -40 to +85C industrial temperature range tolerates factory-floor environments, and the OTP memory prevents field firmware tampering.
推荐
Consumer Toy and Hobby Electronics
The PIC16LV54A-02I/SS is well suited to consumer toy electronics where sub-$1 BOM targets and minimal external parts drive cost decisions. The 768B OTP stores fixed sound-effect triggers, LED chase patterns, and motor PWM sequences for toy vehicles and educational kits. The 2.0 V minimum VDD lets designers power the MCU from a single Li-ion cell or 2xAA pack, while the SSOP-20 footprint saves space versus PDIP alternatives. The RISC instruction set compresses code 2:1 versus standard 8-bit MCUs, allowing rich behaviors in only 512 instruction slots. Designers can use the same MCU across multiple toy SKUs by changing only the OTP image.
推荐
推荐产品汇总
工程参考数据： PIC16LV54A-02I/SS ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC16LV54AT-02I/SS | PIC16C54A-02I/SS | PIC16C54C-04I/SS | PIC16C54C-04/SS | PIC16F54-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SSOP-20 | SSOP-20 - same | SSOP-20 - same | SSOP-20 - same | SSOP-20 - same | SSOP-20 - same |
| Maximum Clock Speed | 2 MHz | 2 MHz | 2 MHz | 4 MHz | 4 MHz | 20 MHz |
| Program Memory Type | OTP | OTP | OTP | OTP | OTP | Flash |
| Program Memory Size | 768 B | 768 B | 768 B | 768 B | 768 B | 512 B (Flash) |
| RAM | 25 B | 25 B | 25 B | 25 B | 25 B | 25 B |
| I/O Pins | 12 | 12 | 12 | 12 | 12 | 12 |
| Supply Voltage (VDD) | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 2.0 V to 5.5 V |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | 0 C to +70 C | -40 C to +85 C |
关键差异点
- Low-voltage 2.0 V VDD minimum extends to single-cell battery operation （对比 PIC16C54A-02I/SS)
- Optimized 2 MHz speed grade reduces power consumption vs 4 MHz grade （对比 PIC16C54C-04I/SS)
- Higher code density per instruction reduces OTP burn cost （对比 PIC16F54-I/SS)
- Same SSOP-20 footprint across full PIC16C5x family for platform reuse （对比 PIC16LV54AT-02I/SS)
设计说明
Place a 0.1 uF ceramic decoupling capacitor within 5 mm of the VDD pin (pin 19) and connect VSS (pins 5 and 14) directly to a ground plane. For battery-powered designs operating near 2.0 V, add a 10 uF bulk capacitor at the cell terminal to prevent brown-out during transmit-current spikes (IR LEDs, motor drivers). Estimate: a 100 mA spike with 10 ohm ESR battery drops ~1 V, so bulk capacitance prevents VDD from collapsing below BOR threshold. Use the internal POR/BOR circuit to ensure clean reset on power-up; do not rely on slow-rising VDD for proper initialization.
OTP memory cannot be erased - once programmed, the PIC16LV54A-02I/SS is locked to that code. Designers must prototype with PIC16F54-I/SS (same SSOP-20 footprint, flash memory) before committing to the OTP version for production. Estimated: a single programming mistake costs a $1+ device plus rework time. Always read back the OTP image via the ICSP interface after programming to verify each word matches expected values. For development boards, leave the /MCLR pin accessible for in-circuit serial programming (ICSP) entry.
Route the oscillator traces (OSC1 pin 16, OSC2 pin 15) as short and symmetric as possible, with the crystal or resonator within 5 mm of the MCU. Add a 4.7 kohm pull-up on /MCLR (pin 4) to prevent spurious resets from noise. For RC oscillator mode, place the resistor and capacitor close to OSC1/RA7 to minimize jitter. The SSOP-20 thermal pad is the central exposed pad; connect it to VSS for improved thermal dissipation if the device drives high-current loads through multiple GPIO pins.
GPIO pins can source/sink up to 25 mA each, but the total package dissipation budget is typically 200 mA across all pins combined. Estimate: driving 8 LEDs at 20 mA each = 160 mA, leaving only 40 mA for the remaining 4 pins - well within limits. For motor or relay drive, use external BJT or MOSFET drivers rather than direct GPIO drive to extend device life. The PIC16LV54A-02I/SS does not have Schmitt-trigger inputs on all pins; add external RC filtering for slow-rising signals from mechanical switches.
合规信息
RoHS compliant per Microchip product page. Lead-free SSOP-20 package. Not AEC-Q100 qualified; for AEC-Q100 automotive applications, upgrade to PIC16F family automotive-grade variants.
