PIC16LV54AT-02I/SS - 0.75KB OTP 8-bit MCU, 2MHz, SSOP-18
MPN: PIC16LV54AT-02I/SS ✓ Hoạt độngPIC16LV54AT-02I/SS Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating a CPU core, non-volatile program memory, working RAM, digital I/O, and peripheral blocks such as timers and interrupts on one die. PIC16C5X-family devices sit at the low end of the Microchip PIC hierarchy, between base-line 8-bit controllers and the mid-range PIC16F family, and are commonly classified as EPROM/ROM-based 8-bit CMOS microcontrollers within the broader semiconductor > integrated circuit > microcontroller > 8-bit MCU taxonomy.
Key features of the PIC16LV54AT-02I/SS include seven (or eight, depending on variant) special-function hardware registers, a two-level hardware stack, direct/indirect/relative addressing for data and instructions, and an 8-bit real-time clock/counter (TMR0). The '02I' speed grade allows operation up to 2 MHz, and the 'I' industrial temperature range covers -40C to +85C. Power-saving SLEEP mode, a watchdog timer (WDT) with on-chip RC oscillator, and programmable code protection round out the feature set typical of this family.
Architecturally, the PIC16LV54A uses a RISC core with 33 single-word/12-bit instructions, an 8-bit ALU, and Harvard memory separation between program (12-bit wide) and data (8-bit wide) buses. The two-level hardware stack limits subroutine nesting to two levels but reduces context-switch overhead, while the absence of interrupts and the small register file keep the silicon small and the cost low - explaining why this device competes on price rather than feature density.
Typical applications include battery-powered sensor interfaces, low-speed consumer appliances, industrial timers and counters, replacement of discrete logic in 4-20 mA loops, simple motor-control PWM, remote controls, and any design where a handful of I/O and a few hundred bytes of OTP code suffice. Designers migrating from PIC16C54/CR58 silicon gain the low-voltage (3V) operation needed for portable lithium-cell applications.
When designing with this device, allocate I/O pin 4 (MCLR) for an external reset pull-up (or use the internal weak pull-up where present), place a 0.1 uF decoupling capacitor close to VDD, and verify oscillator start-up time against the application's worst-case supply ramp. Because the program memory is one-time programmable, code must be fully debugged in equivalent EPROM (windowed) prototypes before committing to the OTP mask.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving procurement and firmware engineers a single authoritative reference for sourcing and substituting the PIC16LV54AT-02I/SS.
Bộ thay thế dễ dàng lắp đặt cho PIC16LV54AT-02I/SS — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16LV54AT-02I/SS (cùng hình factor và footprint) — khác nhau ở Package, Architecture, Program Memory Size, Program Memory Type, Mounting Type.
PIC16LV54A-02I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LV54A-02I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F54T-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C54A-04I/P
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16CR54A-02I/SS
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F54-E/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LV54AT-02I/SS Tỷ lệ tối đa & tính chất điện
| Program Memory Size | 0.75 KB (768 B) OTP |
| RAM Size | 25 B |
| CPU Core | PIC16C5X (8-bit RISC) |
| Instruction Width | 12-bit |
| Bề rộng đường dữ liệu | 8-bit |
| Tần số xung maksimum | 2 MHz |
| I/O Pins | 12 |
| Timers | 1 x 8-bit (TMR0) |
| Hardware Stack Depth | 2 levels |
| Supply Voltage Range | 3 V to 5.5 V (LV variant) |
| Khoảng nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Package Type | SSOP-20 (5.30 mm body width) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
| Watchdog Timer | Yes (on-chip RC oscillator) |
| Program Memory Type | OTP (One-Time Programmable) EPROM/ROM-based |
| Code Protection | Programmable |
| Oscillator Type | External RC / XT / HS / LP (per PIC16C5X family) |
Cấu hình chân PIC16LV54AT-02I/SS
| Chân 1 | MCLR/VPP — Master Clear reset input / programming voltage |
| Chân 2 | OSC1/CLKIN — Oscillator input or external clock in |
| Chân 3 | OSC2/CLKOUT — Oscillator output or clock out (FOSC/4) |
| Chân 4 | RA0 — Port A bit 0 (bidirectional I/O) |
| Chân 5 | RA1 — Port A bit 1 (bidirectional I/O) |
| Chân 6 | RA2 — Port A bit 2 (bidirectional I/O) |
| Chân 7 | RA3 — Port A bit 3 (bidirectional I/O) |
| Chân 8 | RA4/T0CKI — Port A bit 4 / Timer 0 clock input (open-drain) |
| Chân 9 | RA5 — Port A bit 5 (bidirectional I/O) |
| Chân 10 | RB0/INT — Port B bit 0 / external interrupt input |
| Chân 11 | RB1 — Port B bit 1 (bidirectional I/O) |
| Chân 12 | RB2 — Port B bit 2 (bidirectional I/O) |
| Chân 13 | RB3 — Port B bit 3 (bidirectional I/O) |
| Chân 14 | RB4 — Port B bit 4 (bidirectional I/O) |
| Chân 15 | RB5 — Port B bit 5 (bidirectional I/O) |
| Chân 16 | RB6 — Port B bit 6 (bidirectional I/O) |
| Chân 17 | RB7 — Port B bit 7 (bidirectional I/O) |
| Chân 18 | VDD — Positive supply (3.0 V to 5.5 V) |
| Chân 19 | GND — Ground reference |
| Chân 20 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC16LV54AT-02I/SS phù hợp cho 7 Áp dụngs: Battery-Powered Sensor Interface, Industrial Timer and Counter Module, Replacement of Discrete Logic in 4-20 mA Loops, Simple PWM Motor Speed Control, Remote Control and IR Emitter/Receiver Pair, Cost-Sensitive Appliance User Interface, Smart Sensor Edge Node (Legacy Retrofit).
Battery-Powered Sensor Interface
The PIC16LV54AT-02I/SS fits battery-powered sensor interfaces because its 3.0 V minimum supply enables direct connection to a single lithium coin cell (3.0-3.2 V) or 2xAA alkaline stack without a boost converter, while the 12 I/O pins can drive a sensor, an indicator LED, and a low-rate UART. With 768 bytes of OTP code storage, firmware handles initialization, periodic TMR0-driven sampling at 2 MHz, and a SLEEP/idle loop drawing microamp-level quiescent current. Compared with PIC16F54, the OTP-only architecture removes flash inrush current and reduces deep-sleep floor noise - ideal for PIR motion detectors, smoke-sensor front-ends, and smart-lock modules where BOM cost per unit outweighs the inability to reflash in field.
Được đề xuất
Industrial Timer and Counter Module
The PIC16LV54AT-02I/SS is a natural fit for industrial timer/counter modules because its 8-bit TMR0 with programmable prescaler (1:2 to 1:256) provides accurate timing at 2 MHz when paired with a 32.768 kHz crystal divided through the internal watchdog. The 12 I/O pins accommodate up/down counter inputs, relay drivers, and a status LED, while the -40 C to +85 C industrial temperature range survives factory-floor environments. In conveyor-control or HVAC-damper applications, the two-level hardware stack and 33 single-cycle instructions let the firmware debounce inputs, drive TRIAC outputs, and sequence relays without a real-time OS - a hallmark of PIC16C5X-family usage where deterministic timing beats RAM capacity.
Được đề xuất
Replacement of Discrete Logic in 4-20 mA Loops
The PIC16LV54AT-02I/SS replaces discrete logic gates in 4-20 mA current-loop transmitters because its 3.0 V minimum supply can be derived directly from a loop-powered regulator (such as a 3.3 V LDO after the 4 mA minimum bias), and its small 0.75 KB code space easily holds scaling, linearization, and HART-like bit-banging routines. With 12 I/O pins, the device reads a sensor, drives a DAC, and toggles a loop-keying transistor while running at 2 MHz - sufficient for the slow dynamics of process control loops. Compared with a CD4060/CD4017 logic-based design, integrating these functions in one MCU reduces PCB area by 60-70% and improves calibration flexibility without raising unit cost above $3.
Được đề xuất
Simple PWM Motor Speed Control
The PIC16LV54AT-02I/SS implements PWM motor speed control by toggling an I/O pin in software at a variable duty cycle, using TMR0 to set the period. Although the device lacks a dedicated PWM peripheral, the 2 MHz clock and 12-bit instruction path let firmware produce 1 kHz PWM with 8-bit resolution - adequate for low-power DC fans, small solenoid drivers, and RC-servo positioning where fine resolution is not required. The 3.0 V minimum supply matches single-cell Li-ion or 2xAA operation, while 12 I/O pins drive direction, brake, enable, and a tachometer input. Engineers choosing this device accept that PWM jitter is software-bound; for hardware-PWM precision, migrate to PIC16F54 or PIC16LF88T-I/SS.
Được đề xuất
Remote Control and IR Emitter/Receiver Pair
The PIC16LV54AT-02I/SS serves as the controller in low-cost IR remote controls because its 25-byte RAM and 768-byte OTP are sufficient for NEC/Sony/RC5 protocol encoding/decoding, while 12 I/O pins drive up to 64-key matrix scanning and an IR LED. The 3.0 V minimum supply lets the device run from 2xAAA cells for years of standby life. The 2 MHz oscillator is more than fast enough to generate 38 kHz carrier frequencies with adequate duty-cycle accuracy. The PIC16C5X family's small die also means low quiescent current (<1 mA active, low-uA SLEEP), extending remote battery life far beyond flash-based MCUs.
Được đề xuất
Cost-Sensitive Appliance User Interface
The PIC16LV54AT-02I/SS fits white-goods user interfaces (microwave keypads, washing-machine display panels, coffee-machine controllers) where its 12 I/O pins scan a 3x4 matrix keypad and drive a multiplexed 7-segment display, and its 768 bytes of OTP code store timing tables, debounce routines, and indicator patterns. The 3.0 V minimum supply accepts a single 3.3 V LDO from the appliance's rectified mains, and the -40 C to +85 C industrial temperature range survives kitchen and garage environments. Compared with mid-range PIC16F877 designs, this PIC16C5X part cuts BOM cost by 40-60% while delivering exactly the deterministic behavior that simple appliances need - no RTOS, no interrupts, no surprises.
Được đề xuất
Smart Sensor Edge Node (Legacy Retrofit)
The PIC16LV54AT-02I/SS acts as a smart sensor edge node in legacy retrofit installations where a new analog sensor is added to an existing 3.3 V system; the device samples the sensor via comparator/software-ADC, performs local thresholding, and signals back over a slow UART or one-wire interface. With 25 bytes of RAM, only simple moving averages fit, but at slow sample rates (1-10 Hz) the firmware can still filter mechanical-switch bounce and temperature drift. Compared with newer ARM Cortex-M0+ parts, this PIC16C5X device keeps standby current below 1 mA, which matters in solar-powered remote sensor enclosures where every microamp counts during night-time operation.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LV54AT-02I/SS — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC16LV54A-02I/SS | PIC16LV54A-02I/P | PIC16F54T-I/SS | PIC16C54A-04I/P | PIC16CR54A-02I/SS | PIC16F54-E/SS |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | 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 | SSOP-20 - same |
| Program Memory Type | OTP (768 B) | OTP (768 B) | OTP (768 B) | Flash (768 B) | OTP (768 B) | Mask ROM (768 B) | Flash (768 B) |
| Maximum Clock | 2 MHz | 2 MHz | 2 MHz | 20 MHz | 4 MHz | 2 MHz | 20 MHz |
| Supply Voltage | 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 | 4.5 V to 5.5 V | 3.0 V to 5.5 V | 2.0 V to 5.5 V |
| I/O Pins | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| RAM | 25 B | 25 B | 25 B | 25 B | 25 B | 25 B | 25 B |
| Temperature Range | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C (Extended) |
| Unit Price (qty 1, USD) | $2.95 | $2.95 | $2.95 | $1.85 | $3.20 (NRND) | $2.85 | $2.10 |
Bảo phân biệt quan trọng
- Lowest-voltage OTP MCU in PIC16C5X family (vsPIC16C54A-04I/P)
- Lower unit cost vs flash-based equivalent (vsPIC16F54T-I/SS)
- Industrial temperature range across all variants (vsPIC16F54-E/SS)
Ghi chú thiết kế
Place a 0.1 uF ceramic decoupling capacitor as close as possible to the VDD pin (pin 18) on PIC16LV54AT-02I/SS, with a trace length under 5 mm. For battery-powered designs, add a 10 uF bulk capacitor at the 3.3 V LDO output to handle inrush when TMR0 wakes the MCU from SLEEP. The 'LV' variant's 3.0 V minimum allows direct single-cell Li-ion/3xAA operation, but verify the brown-out voltage with the chosen LDO: the PIC16C5X family lacks a programmable brown-out reset, so an external voltage supervisor (such as MCP130) is recommended for industrial applications to avoid code corruption during supply dips below 3.0 V.
Estimated: at 2 MHz clock with 12 I/O pins switching simultaneously at 5 V, total ground bounce on a 2-layer FR4 PCB can exceed 0.4 V if the ground pour is fragmented. Route all I/O signals over a continuous ground plane on the bottom layer, and keep the SSOP-20 footprint's center pad (if present) tied to GND with multiple thermal vias. The MCLR/VPP pin (pin 1) must have a 10 kohm pull-up to VDD and a 100 nF capacitor to GND if in-circuit serial programming is needed; otherwise, omit the capacitor and use a simple 10 kohm pull-up.
Do not assume PIC16LV54AT-02I/SS interrupts support: the PIC16C5X base-line family has NO interrupt controller, so all event handling must be polling-based using TMR0 overflow flags. Do not exceed VPP voltage of 13.5 V during OTP programming or the device may be damaged. The two-level hardware stack restricts subroutines to a single nesting level - if firmware uses CALL inside CALL, the return address is lost. Finally, do not omit the configuration word programming step (oscillator selection, WDT enable/disable, code protection); incorrect configuration bits can render the device bricked.
Estimated: at 2 MHz oscillator with HS crystal mode, the OSC2 pin (pin 3) drives a 20-30 pF load including the crystal and stray capacitance. If using a ceramic resonator, add a 1 Mohm parallel feedback resistor to ensure start-up across -40 C to +85 C. For RC oscillator mode, select an external resistor between 5 kohm and 100 kohm and a capacitor between 20 pF and 200 pF to keep the frequency tolerance within +/- 5 percent. Place the oscillator components within 5 mm of pins 2-3 and shield the traces from switching I/O to avoid injection of harmonic noise into the clock.
Thông tin tuân thủ
RoHS/REACH compliant per Microchip PIC16C5X family product page. Not AEC-Q100 qualified - choose PIC16F54-E/SS or PIC16LF88T-I/SS for automotive applications. Lead-free and halogen-free per Microchip environmental compliance documentation.
