PIC16LV54A-02/P - 2MHz 8-Bit OTP MCU | Microchip 18-DIP
料号： PIC16LV54A-02/P ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.95 | $2.95 |
| 10 | $2.65 | $26.50 |
| 100 | $2.1 | $210.00 |
| 500 | $1.85 | $925.00 |
| 1,000 | $1.65 | $1,650.00 |
PIC16LV54A-02/P 概述
What is an 8-bit OTP microcontroller? An 8-bit OTP MCU is a single-chip microcomputer whose internal program memory can be written exactly once by the user using a device programmer, after which the bit pattern is permanent. The OTP approach offers lower per-unit cost than windowed EPROM or flash, while preserving the flexibility of a programmable part. Within the broader semiconductor hierarchy, an OTP microcontroller sits under the categories: microcontroller -> embedded processor -> integrated circuit -> semiconductor.
Key features of the PIC16LV54A-02/P include seven or eight special-function hardware registers, a two-level-deep hardware stack, and direct/indirect/relative addressing modes for both data and instructions. The architecture exposes a RISC-style instruction set with a fixed two-cycle fetch, contributing to deterministic interrupt-free execution. The CMOS implementation minimizes quiescent current relative to NMOS predecessors.
Architecturally, the PIC16LV54A-02/P uses a Harvard-style bus with separate program and data paths. This separation prevents the fetches from colliding with data accesses and enables the instruction pipelining that yields the well-known PIC instruction-per-clock (effective) performance. The 12-bit instruction width is wider than the 8-bit data path, which is the classic PIC16C5X signature, allowing literal data and absolute addresses to embed inside a single word.
Typical applications include low-cost appliance controllers, hobby and educational projects, battery-powered timer modules, simple sensor signal conditioners, replacement logic for discrete 74-series glue, and standalone state machines. The 2 MHz ceiling and 768-byte OTP ceiling mean this MCU targets small, deterministic, foreground-only tasks.
A critical design consideration is the OTP nature of the memory: firmware revisions require a new part. Designers should finalize the code or migrate to a flash-based sibling such as PIC16F54-I/P for production with frequent firmware updates.
This page synthesizes distributor pricing, drop-in alternatives within the PIC16C5X/PIC16F5X line, and design notes not found in the manufacturer datasheet, including a verified package-dimension reference.
直接替换替代料： PIC16LV54A-02/P ——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-02/P （相同外形与封装尺寸） ——差异在于 Mounting Type, Package, ADC, EEPROM, Hardware Stack.
快速对比工具——选择替代料号进行并排对比：
PIC16F54-I/P
✅ 直接替换✓ 有现货
$0.68 / 个
查看数据手册 →PIC16C54A-02/P
✅ 直接替换📋 参考替代料（不在目录中）
PIC16C55A-02/P
✅ 直接替换📋 参考替代料（不在目录中）
PIC16C56A-02/P
✅ 直接替换📋 参考替代料（不在目录中）
PIC16LV54A-02I/P
✅ 直接替换✓ 有现货
$1.18 / 个
查看数据手册 →PIC16C54A-20/P
✅ 直接替换📋 参考替代料（不在目录中）
PIC16LV54A-02/P 最大额定值与电气特性
| Family | PIC® 16C/16LV (16C5X baseline) |
| Core | 8-bit RISC, 12-bit instruction word |
| Program Memory | 768 bytes (512 x 12) OTP |
| EEPROM | None (data EEPROM not present on 16C5X baseline) |
| Max Clock Frequency | 2 MHz |
| Operating Voltage (LV) | 2.5 V to 5.5 V |
| I/O Pins | 12 |
| Timers | 1 x 8-bit (TMR0) |
| Stack Depth | 2 levels (hardware) |
| ADC | None |
| 封装 | 18-DIP (0.300 in / 7.62 mm), through-hole |
| 引脚数量 | 18 |
| Instruction Set | 33 instructions, 12-bit wide |
| Addressing Modes | Direct, Indirect, Relative |
| 工作温度 | Commercial (0C to +70C) |
| 安装类型 | Through Hole |
PIC16LV54A-02/P 引脚配置
| 引脚 1 | RA2 — Bidirectional I/O pin; bit 2 of PORTA |
| 引脚 2 | RA3 — Bidirectional I/O pin; bit 3 of PORTA |
| 引脚 3 | RA4/T0CKI — Bidirectional I/O / Timer0 external clock input |
| 引脚 4 | MCLR — Master Clear (reset); tie to VDD through 10 kohm for normal operation |
| 引脚 5 | VSS — Ground reference |
| 引脚 6 | RB0/INT — Bidirectional I/O pin; bit 0 of PORTB / external interrupt |
| 引脚 7 | RB1 — Bidirectional I/O pin; bit 1 of PORTB |
| 引脚 8 | RB2 — Bidirectional I/O pin; bit 2 of PORTB |
| 引脚 9 | RB3 — Bidirectional I/O pin; bit 3 of PORTB |
| 引脚 10 | RB4 — Bidirectional I/O pin; bit 4 of PORTB |
| 引脚 11 | RB5 — Bidirectional I/O pin; bit 5 of PORTB |
| 引脚 12 | RB6 — Bidirectional I/O pin; bit 6 of PORTB |
| 引脚 13 | RB7 — Bidirectional I/O pin; bit 7 of PORTB |
| 引脚 14 | VDD — Positive supply voltage (2.5 V to 5.5 V) |
| 引脚 15 | OSC2/CLKOUT — Oscillator output / clock out (crystal mode) |
| 引脚 16 | OSC1/CLKIN — Oscillator input / external clock in (crystal mode) |
| 引脚 17 | RA0 — Bidirectional I/O pin; bit 0 of PORTA |
| 引脚 18 | RA1 — Bidirectional I/O pin; bit 1 of PORTA |
典型应用
PIC16LV54A-02/P 适用于 6 应用s: Low-Cost Appliance Control, Battery-Powered Timer Module, Educational and Hobby Projects, Simple Sensor Signal Conditioner, Replacement Logic for 74-Series Glue, Standalone State Machine Controller.
Low-Cost Appliance Control
The PIC16LV54A-02/P fits low-cost appliance controllers where the deterministic 12-bit PIC instruction set and 2 MHz clock deliver predictable interrupt-free execution for slow machine cycles (relay drivers, indicator LEDs, keypads, 7-segment multiplex). The 2.5 V minimum supply lets a single Li coin cell power the controller in standby, while the 768-byte OTP accommodates state-machine firmware for washers, fans, or coffee makers. Twelve GPIO are sufficient for a few buttons plus a 7-segment/LED matrix, and the 2-level hardware stack matches the no-nested-interrupt target. Decoupling: 100 nF ceramic close to VDD; MCLR tied to VDD via 10 kohm for non-reset designs.
推荐
Battery-Powered Timer Module
Battery-powered timer and interval modules benefit from the PIC16LV54A-02/P's 2.5 V minimum supply, which lets two AA alkaline cells (3 V nominal) drive the chip end-of-life without a boost converter. The CMOS implementation keeps quiescent current low so a single set of cells can run a thermostat, irrigation valve, or pet feeder for years. The TMR0 8-bit counter, driven from RA4/T0CKI or the internal instruction clock, provides a precise timing source when paired with a 32.768 kHz watch crystal on the OSC pins. Direct, indirect, and relative addressing modes cover simple schedule tables inside the 768-byte OTP program space.
推荐
Educational and Hobby Projects
The PIC16LV54A-02/P is a classic teaching vehicle for first-time embedded developers because its 33-instruction PIC16C5X instruction set is small enough to learn in a weekend, yet powerful enough to drive meaningful projects. Breadboard-friendly 0.300-inch 18-DIP package fits standard perfboard and DIP sockets, and the 2 MHz clock tolerates long breadboard wires without signal-integrity surprises. Twelve I/O pins can drive LEDs, character LCDs via bit-banging, or 7-segment displays. With OTP memory at this price point, students learn to budget code carefully, mirroring real-world low-MCU design discipline.
推荐
Simple Sensor Signal Conditioner
The PIC16LV54A-02/P excels as a sensor-signal conditioner that needs digital filtering or thresholding before passing a clean logic output to a downstream controller. The chip reads a digital pulse train (e.g., from a Hall sensor or optical interrupter) on RA4/T0CKI and applies a debounce-and-window algorithm entirely in firmware. The Harvard bus keeps the timing deterministic for pulse-width measurement, while the 12 I/O provide headroom for status LEDs and a watchdog-driven alarm output. For designs that need an actual ADC, the PIC16C54A-02/P is pin-compatible, and the PIC16LF819-I/P adds a 10-bit ADC plus nanoWatt technology for further power savings.
推荐
Replacement Logic for 74-Series Glue
Engineers often replace discrete 74HC logic gates with the PIC16LV54A-02/P when the glue logic starts to require sequenced outputs, conditional behavior, or timing patterns that exceed discrete gates. Twelve GPIO plus the TMR0 timer can reproduce state-machine behavior in a single 18-DIP part, shrinking PCB area and reducing the BOM count. The 2 MHz clock and Harvard bus give deterministic cycle counts, which matters for tight inter-chip handshakes. Pin-compatible upgrades such as PIC16F54-I/P enable late-stage firmware changes without redesign, a common need when the sequence spec evolves after board spin.
推荐
Standalone State Machine Controller
The PIC16LV54A-02/P is ideal for standalone state-machine controllers that drive pumps, solenoids, or motor direction relays in industrial equipment where deterministic behavior and long-term supply outweigh code size. The 768-byte OTP holds a multi-state finite state machine with timing parameters, while the TMR0 8-bit counter generates per-state dwell intervals without software loops. The 2.5-5.5 V LV input survives 24 V industrial rails after regulation, and the 18-pin PDIP package withstands the through-hole vibration profiles typical of motor-control cabinets. For factory automation, the industrial-temp PIC16LV54A-02I/P is the same die in a wider temperature window.
推荐
推荐产品汇总
工程参考数据： PIC16LV54A-02/P ——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 | PIC16F54-I/P | PIC16C54A-02/P | PIC16C55A-02/P | PIC16C56A-02/P | PIC16LV54A-02I/P | PIC16C54A-20/P |
|---|---|---|---|---|---|---|---|
| Package | PDIP-18 (0.300 in, 7.62 mm) | PDIP-18 - same | PDIP-18 - same | PDIP-18 - same | PDIP-18 - same | PDIP-18 - same | PDIP-18 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 768 bytes (512 x 12) OTP | 768 bytes Flash | 768 bytes OTP/EPROM | 1 KB (1024 x 12) OTP/EPROM | 1 KB (1024 x 12) OTP/EPROM | 768 bytes OTP | 768 bytes OTP/EPROM |
| Max Clock Frequency | 2 MHz | 20 MHz | 2 MHz | 2 MHz | 2 MHz | 2 MHz | 20 MHz |
| Operating Voltage | 2.5 V to 5.5 V (LV) | 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 | 2.5 V to 5.5 V (LV) | 3.0 V to 5.5 V |
| Memory Type | OTP (one-time programmable) | Flash (re-programmable) | OTP EPROM (windowed) | OTP EPROM (windowed) | OTP EPROM (windowed) | OTP | OTP EPROM (windowed) |
| I/O Pins | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| Operating Temperature | Commercial (0C to +70C) | Industrial (-40C to +85C) | Commercial (0C to +70C) | Commercial (0C to +70C) | Commercial (0C to +70C) | Industrial (-40C to +85C) | Commercial (0C to +70C) |
关键差异点
- Lowest-cost 18-pin PIC16C5X with flash-class drop-in upgrade path （对比 PIC16F54-I/P)
- Wide 2.5 V to 5.5 V supply range （对比 PIC16C54A-02/P)
- 768 bytes OTP matches PIC16C54A code footprint （对比 PIC16C55A-02/P)
设计说明
Estimated: at 5 V VDD, 2 MHz oscillator, and all 12 GPIO sourcing 5 mA, total supply current is in the 2-5 mA range. Place a 100 nF ceramic decoupling capacitor within 5 mm of the VDD pin (pin 14), and add a bulk 10 uF electrolytic if the MCU sits more than 25 mm from the regulator. The 2.5 V minimum supply lets a single Li coin cell power the chip, but designers should verify MCLR pull-up behavior below 3.0 V with the chosen 10 kohm resistor.
The PIC16LV54A-02/P has only a 2-level hardware stack, which means subroutines cannot nest more than two levels and interrupts are not supported on the baseline PIC16C5X. Code that expects more than two CALLs deep will silently overflow. Plan the firmware architecture to avoid deep nesting, and remember that the OTP memory cannot be erased - any firmware bug becomes a hardware rework. Use a windowed PIC16C54A-02/P or flash PIC16F54-I/P for development, then move to PIC16LV54A-02/P for production runs.
Keep the crystal or ceramic resonator within 10 mm of OSC1/OSC2 (pins 15-16) and route the traces symmetrically with a ground guard ring to avoid clock glitches. The MCLR pin (pin 4) should be tied to VDD through a 10 kohm resistor with a 100 nF cap to ground for in-circuit debugging; for production, an RC reset of 10 kohm/100 nF provides a clean power-on reset. Leave RA4 open-drain in mind if driving LEDs directly - the RA4 output structure on PIC16C5X is open-drain, so an external pull-up is required for sourcing current.
合规信息
RoHS and lead-free per Microchip product page. Not AEC-Q100 qualified - this is a commercial/industrial baseline 8-bit MCU; for automotive, use PIC16F54-E/P or PIC18F family.
