PIC16LC54C-04I/SS - 8-Bit 4MHz OTP MCU, 12 I/O, SSOP-20 | Microchip
MPN: PIC16LC54C-04I/SS ✓ نشطPIC16LC54C-04I/SS نظرة عامة
An 8-bit microcontroller (MCU) is a single-chip computer that integrates an 8-bit CPU core, program memory, data RAM, and peripheral I/O on one die. Within the broader taxonomy, the PIC16LC54C belongs to the PIC16C5x baseline family, which sits at the lowest tier of Microchip's 8-bit PIC microcontroller hierarchy (baseline -> mid-range -> enhanced mid-range -> PIC18). These devices are typically used as glue logic replacements, simple state machines, and cost-sensitive embedded controllers in appliance, consumer, and industrial sensor interfaces.
Key features of the PIC16LC54C-04I/SS include 33 single-word instructions (12-bit opcode width), a 4 MHz oscillator input with a 1 µs instruction cycle, two 8-bit timer/counters (TMR0, TMR1), a watchdog timer with on-chip RC oscillator, and a power-on reset circuit. The 'LC' suffix denotes the low-voltage CMOS variant (2.5 V to 6.25 V VDD range) versus the standard 'C' parts (3.0 V to 6.25 V), making it suitable for battery-operated applications. The 'I' temperature grade supports the industrial -40 °C to +85 °C range.
Architecturally, the PIC16LC54C uses a RISC-style Harvard architecture with separate program and data buses, enabling single-cycle instruction fetch plus single-cycle execute (except for program branches, which take two cycles). OTP (one-time programmable) memory is programmed once via ICSP (In-Circuit Serial Programming), making this part economical for low-to-medium production volumes where flash reprogrammability is not required.
Typical applications include remote control transmitters, appliance control boards (coffee makers, washing machines), battery chargers, LED drivers, fan controllers, security keypads, and simple sensor interfaces where the PIC16F54 flash variant is overkill. The '04' speed grade (4 MHz) is the slowest of the three grades (04/10/20) and consumes the lowest supply current.
When designing with this part, note that OTP memory cannot be erased, so firmware must be fully validated on a flash-equivalent PIC16F54 before committing to the OTP die for production. Reserve ICSP pins (RB6, RB7) for in-system programming access even on the final board layout.
This page synthesizes distributor pricing, drop-in alternatives (PIC16C54C, PIC16LC54A), and practical design notes not found in the manufacturer datasheet alone.
بدائل مباشرة لـ PIC16LC54C-04I/SS — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع PIC16LC54C-04I/SS (نفس عامل الشكل والبصمة) — يختلف في Package, Operating Temperature, Program Memory Size, Program Memory Type, Core Architecture.
PIC16C54C-04I/SS
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16LC54A-04I/SS
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC16LC54A-04E/SS
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16F54-I/SS
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16LC54AT-04I/SO
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16LC54AT-04/SS
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16LC505T-04/SL
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16LC54C-04I/SS الحدود القصوى والخصائص الكهربائية
| Core Architecture | PIC 8-bit (PIC16C5x baseline, RISC Harvard) |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 768 B (512 x 12 words) |
| Data RAM | 25 B |
| Maximum CPU Frequency | 4 MHz |
| Instruction Cycle Time | 1 µs at 4 MHz |
| Supply Voltage (VDD) | 2.5 V to 6.25 V (LC low-voltage variant) |
| I/O Pins | 12 (bidirectional, 5 V tolerant) |
| Timers | 2 x 8-bit (TMR0, TMR1) |
| Watchdog Timer | Yes (on-chip RC oscillator) |
| Power-on Reset | Yes (on-chip) |
| ADC | None |
| UART / SPI / I2C | None |
| Interrupts | None (polled I/O only) |
| درجة حرارة التشغيل | -40 °C to +85 °C (industrial grade, 'I' suffix) |
| العلبة | 20-pin SSOP (5.30 mm body width, 0.65 mm pitch) |
| نوع التركيب | Surface Mount |
| Lead-Free / RoHS | Yes / Compliant |
| ICSP Programming | Yes (via RB6/RB7) |
تكوين أطراف PIC16LC54C-04I/SS
| دبوس 1 | RA2 — Bidirectional I/O port A bit 2 |
| دبوس 2 | RA3 — Bidirectional I/O port A bit 3 |
| دبوس 3 | RTCC — TMR0 real-time clock/counter external input |
| دبوس 4 | MCLR — Master clear reset input, active low |
| دبوس 5 | VSS — Ground reference |
| دبوس 6 | RB0 — Bidirectional I/O port B bit 0 |
| دبوس 7 | RB1 — Bidirectional I/O port B bit 1 |
| دبوس 8 | RB2 — Bidirectional I/O port B bit 2 |
| دبوس 9 | RB3 — Bidirectional I/O port B bit 3 (programming voltage) |
| دبوس 10 | RB4 — Bidirectional I/O port B bit 4 (programming voltage) |
| دبوس 11 | RB5 — Bidirectional I/O port B bit 5 |
| دبوس 12 | RB6 — Bidirectional I/O port B bit 6 (ICSP clock) |
| دبوس 13 | RB7 — Bidirectional I/O port B bit 7 (ICSP data) |
| دبوس 14 | VDD — Positive supply voltage, 2.5 V to 6.25 V |
| دبوس 15 | OSC2 — Crystal/oscillator output |
| دبوس 16 | OSC1 — Crystal/oscillator input or external clock input |
| دبوس 17 | RA0 — Bidirectional I/O port A bit 0 |
| دبوس 18 | RA1 — Bidirectional I/O port A bit 1 |
| دبوس 19 | RA4 — Bidirectional I/O port A bit 4 (open-drain option) |
| دبوس 20 | RA5 — Bidirectional I/O port A bit 5 |
التطبيقات النموذجية
PIC16LC54C-04I/SS مناسب لـ 6 التطبيقs: Remote Control Transmitter, Appliance Control Board, Battery Charger Controller, LED Lighting Controller, Security Keypad Panel, Toy and Hobby Electronics.
Remote Control Transmitter
The PIC16LC54C-04I/SS is well suited for infrared remote control transmitters used in TVs, set-top boxes, and consumer audio equipment. Its 4 MHz CPU, 768 bytes of OTP program memory, and 12 I/O pins are sufficient to implement RC5, NEC, or Sony SIRC protocols with keypad scanning. The LC variant's 2.5 V to 6.25 V VDD range allows direct operation from two alkaline AA cells (3 V nominal) without a boost converter. Typical standby current below 1 µA extends battery life to multi-year timeframes. The SSOP-20 footprint fits inside slim remote enclosures.
موصى به
Appliance Control Board
Inside washing machines, dishwashers, coffee makers, and microwave ovens, the PIC16LC54C-04I/SS serves as the central state-machine controller for motor relays, valve solenoids, heater elements, and 7-segment LED displays. Its 25 bytes RAM and 12 I/O pins match the needs of sequential control logic without the cost of a Flash MCU. The industrial -40 °C to +85 °C temperature grade handles under-cabinet kitchen and laundry-room environments. OTP memory prevents accidental firmware corruption from supply transients during compressor inrush.
موصى به
Battery Charger Controller
The PIC16LC54C-04I/SS's 2.5 V to 6.25 V operating range and 1 µA standby current make it ideal for Ni-MH, Ni-Cd, or single-cell Li-ion charger controllers that monitor -dV, dT/dt, or timer-based charge termination. Its 8-bit TMR0 and TMR1 timers provide accurate charge-time accumulation, while the 12 I/O pins handle temperature thermistor input, charge-current sense, LED status indicators, and enable signals to a charging FET. The OTP die suits sealed, cost-optimized consumer charger products.
موصى به
LED Lighting Controller
Simple decorative LED controllers - fairy lights, color-changing strips, or signage animations - use the PIC16LC54C-04I/SS to drive MOSFETs or constant-current drivers with PWM dimming and pre-programmed chase patterns. The 768-byte OTP stores 8-16 lighting scenes; 12 I/O pins control up to 4 RGB channels plus a master enable. The 4 MHz clock delivers PWM frequencies above 100 Hz to eliminate flicker perception. Industrial temperature grade supports outdoor string-light applications.
موصى به
Security Keypad Panel
Burglar alarm keypads, access-control pin pads, and garage-door entry pads use the PIC16LC54C-04I/SS to scan a 3x4 or 4x4 matrix keypad, debounce presses, compare PINs, and trigger a relay or buzzer. With 12 I/O pins the MCU directly scans an 8-key matrix without a diode or shift-register expander. OTP memory prevents code extraction by adversaries. The watchdog timer detects firmware lockup and resets the device, while the LC variant supports battery backup at 3 V during AC power loss.
موصى به
Toy and Hobby Electronics
Cost-sensitive mass-market toys, talking plush animals, electronic games, and hobby RC controllers use the PIC16LC54C-04I/SS as a simple sequencer with sound playback control. The 4 MHz CPU executes pre-programmed action sequences (motor moves, LED patterns, audio sample triggers) from 768 bytes of OTP. Low unit cost (under $1.50 at 1,000 pieces) keeps bill-of-materials competitive versus ASICs. The SSOP-20 footprint is small enough to fit inside hand-held enclosures.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PIC16LC54C-04I/SS — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | PIC16C54C-04I/SS | PIC16LC54A-04I/SS | PIC16F54-I/SS | PIC16LC505T-04/SL |
|---|---|---|---|---|---|
| Brand | 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 |
| Program Memory Type | OTP (768 B) | OTP (768 B) - same | OTP (768 B) - same | Flash (768 B, 10k erase cycles) | OTP (1.5 KB) |
| Maximum CPU Frequency | 4 MHz | 4 MHz - same | 4 MHz - same | 4 MHz - same | 4 MHz - same |
| Data RAM | 25 B | 25 B - same | 25 B - same | 25 B - same | 72 B |
| I/O Pins | 12 | 12 - same | 12 - same | 12 - same | 12 - same |
| VDD Range | 2.5 V to 6.25 V | 3.0 V to 6.25 V | 2.5 V to 6.25 V - same | 3.0 V to 5.5 V | 2.5 V to 6.25 V - same |
| Operating Temperature | -40 °C to +85 °C (industrial) | -40 °C to +85 °C - same | -40 °C to +85 °C - same | -40 °C to +85 °C - same | -40 °C to +85 °C - same |
| ADC / Communication Peripherals | None | None - same | None - same | None - same | None - same |
أبرز الفروقات
- Lowest VDD minimum in the PIC16C5x family (مقابلPIC16C54C-04I/SS)
- Higher memory density successor available (مقابلPIC16LC505T-04/SL)
- OTP cost advantage over Flash variant (مقابلPIC16F54-I/SS)
ملاحظات التصميم
OTP memory can be programmed EXACTLY ONCE. Engineers must fully validate firmware on a flash-equivalent (PIC16F54-I/SS) or windowed-erasable PIC16C54CJW before committing to OTP for production. A single misconfigured CONFIG word (e.g., wrong oscillator mode or watchdog enable) bricks the entire production batch. Always program a 'golden' first article, verify in-circuit, then proceed.
Reserve ICSP pins RB6 (clock) and RB7 (data) for in-circuit serial programming access even on the production board layout. According to Microchip's ICSP specification (DS30277), a 10 kΩ pull-down on MCLR and 10 kΩ pull-ups on RB6/RB7 are recommended to prevent programming-mode lockout during board-level EMI events. Keep the ICSP connector traces short (under 50 mm) to avoid signal-integrity issues at VPP=13 V.
The PIC16LC54C-04I/SS VDD range of 2.5 V to 6.25 V requires careful decoupling: place a 100 nF ceramic capacitor within 5 mm of the VDD pin, plus a 10 µF bulk capacitor near the regulator output. Estimated active current at 4 MHz/5 V is approximately 1 mA (per Microchip PIC16C5X datasheet DS30400D), so a CR2032 coin cell (220 mAh) provides approximately 220 hours of continuous operation - acceptable for remote controls but tight for always-on applications.
When using an external crystal oscillator (HS mode), keep OSC1/OSC2 traces under 10 mm and surround them with a ground guard ring to prevent radiated EMI. For cost-sensitive applications, the internal 4 MHz RC oscillator (±1% typical after calibration) eliminates the crystal and two load capacitors, but the LP/XT/HS modes are preferred where frequency accuracy matters (UART bit timing, timer accuracy).
معلومات الامتثال
RoHS compliant per Microchip product page. Not AEC-Q100 qualified (industrial grade only). Lead-free SSOP-20 package. For automotive applications choose PIC16F54-I/SO or PIC16F54-E/SO instead.
