PIC16LC505-04I/SL - 4MHz 8-Bit OTP MCU, 1.5KB | Microchip
MPN: PIC16LC505-04I/SL ✓ نشطPIC16LC505-04I/SL نظرة عامة
An 8-bit PIC microcontroller is a compact, deterministic RISC processor that executes one instruction per instruction cycle (4 clock cycles) and uses a Harvard architecture with separate program and data buses. The PIC16C5xx family is the low-pin-count, low-cost foundation of the PIC microcontroller lineup and remains popular in cost-sensitive, high-volume embedded designs where simplicity and predictable timing outweigh the need for large memory or advanced peripherals.
Key features include 12 I/O pins with individually programmable direction, a programmable Watchdog Timer for unattended operation, an 8-bit Timer/Counter, and power-saving SLEEP mode with wake-up via interrupt. The device supports in-circuit serial programming (ICSP) via two pins, allowing OTP programming at the factory. The 12-bit wide instruction set is symmetrical, typically achieving 2:1 code compression over competing 8-bit MCUs in the same price class, while the easy-to-remember instruction set shortens development time.
Typical applications include low-cost consumer electronics, battery-powered devices such as remote controls and toys, simple sensor interfaces, white-goods control boards, LED lighting controllers, and small appliance controls. The wide 2.5V to 5.5V operating range allows direct connection to a single Li-ion cell or two alkaline cells with no additional regulation.
When designing with this part, allocate GPIO pins carefully - only 12 are available and some are multiplexed with the ICSP and Timer functions. Because this is an OTP device, firmware must be 100% validated in prototype Flash equivalents (such as the PIC16F505) before committing to mask production; OTP cannot be erased or rewritten.
بدائل مباشرة لـ PIC16LC505-04I/SL — 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 PIC16LC505-04I/SL (نفس عامل الشكل والبصمة) — يختلف في Program Memory Type, Core Architecture, Package, RAM Size, Operating Temperature Range.
PIC16F505-I/SL
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC16C505-04I/SL
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16C505-04E/SL
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16F505T-I/SL
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
PIC16HV540-04I/SO
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16LC505-04I/SL الحدود القصوى والخصائص الكهربائية
| Core | PIC 8-bit RISC (Harvard) |
| Program Memory | 1.5 KB (1K x 12) OTP |
| RAM | 72 B |
| Max CPU Frequency | 4 MHz |
| جهد التغذية | 2.5 V to 5.5 V |
| I/O Pins | 12 |
| Timers | 1 x 8-bit Timer/Counter |
| Watchdog Timer | Yes (programmable) |
| ADC | None |
| العلبة | 14-SOIC (SL) |
| درجة حرارة التشغيل | -40C to +85C (Industrial) |
| نوع التركيب | Surface Mount |
| Instruction Set Width | 12-bit |
| Programming Method | ICSP (In-Circuit Serial Programming) |
| حالة RoHS | Compliant |
تكوين أطراف PIC16LC505-04I/SL
| دبوس 1 | GP5/TOCKI — Bidirectional I/O pin / Timer0 clock input |
| دبوس 2 | GP4/AN4 — Bidirectional I/O pin / analog comparator input |
| دبوس 3 | GP3/MCLR/VPP — Bidirectional I/O pin / Master Clear (Reset) / Programming voltage |
| دبوس 4 | GP2/AN2/INT — Bidirectional I/O pin / analog input / external interrupt |
| دبوس 5 | GP1/AN1 — Bidirectional I/O pin / analog comparator input |
| دبوس 6 | GP0/AN0 — Bidirectional I/O pin / analog comparator input |
| دبوس 7 | VSS — Ground reference |
| دبوس 8 | OSC2/CLKOUT — Oscillator crystal connection / clock output |
| دبوس 9 | OSC1/CLKIN — Oscillator crystal connection / external clock input |
| دبوس 10 | GP6/AN5 — Bidirectional I/O pin / analog comparator input |
| دبوس 11 | GP7 — Bidirectional I/O pin |
| دبوس 12 | NC — Not connected (per datasheet) |
| دبوس 13 | VDD — Positive supply voltage |
| دبوس 14 | NC — Not connected (per datasheet) |
التطبيقات النموذجية
PIC16LC505-04I/SL مناسب لـ 6 التطبيقs: Remote Control / IR Transmitter, Battery-Powered Toys and Gadgets, LED Lighting Controllers, Small Appliance Control Boards, Sensor Interface Modules, White Goods Control Boards.
Remote Control / IR Transmitter
The PIC16LC505-04I/SL is well-suited for low-cost IR remote controls because its 12 I/O pins are sufficient for IR LED driver, button matrix scanning, and status LED. Operating from 2.5V to 5.5V, the part runs directly from 2x AA alkaline cells without voltage regulation, saving BOM cost. The 4 MHz CPU and 12-bit instruction set provide enough throughput for SIRC/RC5/ NEC protocol generation, while SLEEP mode reduces quiescent current to a few microamperes between button presses, extending battery life to multiple years.
موصى به
Battery-Powered Toys and Gadgets
The PIC16LC505-04I/SL fits sub-$5 toys and disposable gadgets because its 2.5V minimum supply voltage allows direct operation from a single CR2032 coin cell (3.0V nominal) without a boost regulator. The 4 MHz CPU executes 5 MIPS, enough for sound playback, simple motor control via PWM emulation, and LED sequencing. The OTP program memory is non-volatile and tamper-resistant, preventing aftermarket firmware cloning. Industrial temperature rating (-40C to +85C) ensures operation in outdoor toys and freezers.
موصى به
LED Lighting Controllers
The PIC16LC505-04I/SL drives simple LED lighting controllers and decorative lighting strips by bit-banging PWM on 6-8 of its 12 GPIO pins. The 4 MHz CPU can multiplex 8 RGB channels at 100 Hz refresh without flicker. With OTP memory, manufacturers can lock color sequences and prevent user firmware changes. The 2.5V minimum supply allows operation from USB-powered 5V or 3.3V regulated rails common in architectural lighting. Watchdog timer recovers from electrical glitches on long cable runs.
موصى به
Small Appliance Control Boards
The PIC16LC505-04I/SL fits small appliance controllers such as coffee makers, electric kettles, and small fans where 12 GPIO is sufficient for keypad input, LCD/LED display output, triac drive, and temperature sensing via comparator. The 8-bit Timer/Counter provides accurate timing for heating element duty-cycle control. Industrial -40C to +85C range covers kitchen and laundry environments. OTP memory locks calibration and safety parameters at production, preventing aftermarket modification of safety limits.
موصى به
Sensor Interface Modules
The PIC16LC505-04I/SL serves as a simple I2C/SPI-to-UART bridge or sensor pre-processor in industrial sensor modules. The 4 MHz CPU handles polling, averaging, and threshold detection at low power. With 2.5V minimum supply, the part can be powered from energy-harvesting sources. OTP memory holds calibration coefficients permanently, eliminating trim pots on finished modules. The 12 GPIO can host SPI/I2C masters plus discrete sensor enables and alarm outputs.
موصى به
White Goods Control Boards
The PIC16LC505-04I/SL is a cost-optimized control MCU for washing machines, dishwashers, and microwave oven user-interface boards where 12 GPIO is enough for keypad matrix, 7-segment LED drive, buzzer, and triac control of motors/valves. The 8-bit PIC16C5xx architecture is field-proven in white goods with decades of deployment. OTP memory locks cycle definitions per model SKU. Wide 2.5V-5.5V supply tolerates noisy SMPS rails from relay-coil switching transients.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PIC16LC505-04I/SL — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | PIC16F505-I/SL | PIC16C505-04I/SL | PIC16C505-04E/SL | PIC16F505T-I/SL | PIC16HV540-04I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-SOIC | 14-SOIC (same) | 14-SOIC (same) | 14-SOIC (same) | 14-SOIC (same) | 14-SOIC (same) |
| Program Memory Type | 1.5 KB OTP | 1.5 KB Flash | 1.5 KB OTP | 1.5 KB OTP | 1.5 KB Flash | 768 B OTP |
| RAM | 72 B | 72 B | 72 B | 72 B | 72 B | 25 B |
| Max CPU Frequency | 4 MHz | 20 MHz | 4 MHz | 4 MHz | 20 MHz | 4 MHz |
| Supply Voltage | 2.5 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 | 2.0 V to 5.5 V | 3.5 V to 15 V |
| I/O Pins | 12 | 12 | 12 | 12 | 12 | 12 |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +125C (Extended) | -40C to +85C | -40C to +85C |
أبرز الفروقات
- Lowest voltage threshold in PIC16C5xx 14-SOIC family (مقابلPIC16C505-04I/SL)
- Industrial temperature range for harsh environments (مقابلPIC16C505-04E/SL)
- Lowerest-cost OTP programming at production volumes (مقابلPIC16F505-I/SL)
ملاحظات التصميم
Place a 100 nF decoupling capacitor as close as possible between VDD (pin 13) and VSS (pin 7) on PIC16LC505-04I/SL designs. Add a 10 uF bulk capacitor at the board power entry. If using a crystal, route OSC1/OSC2 traces short and symmetric, with the crystal case grounded. Keep the MCLR/VPP pin trace short to prevent accidental reset from EMI; if no in-circuit programming is needed, tie MCLR directly to VDD through a 10 kohm resistor.
Do not confuse OTP with Flash when prototyping - the PIC16LC505-04I/SL cannot be reprogrammed once written. Develop firmware on the pin-compatible PIC16F505-I/SL and only commit to OTP when code is fully validated. Note also that pin 3 is shared between GP3, MCLR (reset), and VPP (programming voltage), so any circuit connected to this pin must tolerate the 13V VPP voltage during ICSP programming.
Estimated power consumption for PIC16LC505-04I/SL: ~2 mA active at 4 MHz / 5V and ~1 mA active at 4 MHz / 3V, based on typical Microchip datasheet figures. In SLEEP mode current drops to ~1 uA. For battery-powered designs, use SLEEP aggressively and wake via the watchdog timer or GP2/INT interrupt to extend battery life into multi-year ranges.
معلومات الامتثال
RoHS compliant per Microchip product page. Industrial temperature range -40C to +85C; not AEC-Q100 qualified for automotive.
