PIC16LC505-04I/SL - 4MHz 8-Bit OTP MCU, 1.5KB | Microchip
料号： PIC16LC505-04I/SL ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.91 | $2.91 |
| 10 | $2.62 | $26.20 |
| 100 | $2.18 | $218.00 |
| 500 | $1.85 | $925.00 |
| 1,000 | $1.62 | $1,620.00 |
PIC16LC505-04I/SL 概述
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.
直接替换替代料： PIC16LC505-04I/SL ——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： PIC16LC505-04I/SL （相同外形与封装尺寸） ——差异在于 Program Memory Type, Core Architecture, Package, RAM Size, Operating Temperature Range.
快速对比工具——选择替代料号进行并排对比：
PIC16F505-I/SL
✅ 直接替换📋 参考替代料（不在目录中）
PIC16C505-04I/SL
✅ 直接替换✓ 有现货
$0.6 / 个
查看数据手册 →PIC16C505-04E/SL
✅ 直接替换✓ 有现货
$1.38 / 个
查看数据手册 →PIC16F505T-I/SL
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC16HV540-04I/SO
✅ 直接替换✓ 有现货
$1.78 / 个
查看数据手册 →PIC16LC505-04I/SL 最大额定值与电气特性
| Core | PIC 8-bit RISC (Harvard) |
| Program Memory | 1.5 KB (1K x 12) OTP |
| RAM | 72 B |
| Max CPU Frequency | 4 MHz |
| 电源电压 | 2.5 V to 5.5 V |
| I/O Pins | 12 |
| Timers | 1 x 8-bit Timer/Counter |
| Watchdog Timer | Yes (programmable) |
| ADC | None |
| 封装 | 14-SOIC (SL) |
| 工作温度 | -40C to +85C (Industrial) |
| 安装类型 | Surface Mount |
| Instruction Set Width | 12-bit |
| Programming Method | ICSP (In-Circuit Serial Programming) |
| RoHS 状态 | Compliant |
PIC16LC505-04I/SL 引脚配置
| 引脚 1 | GP5/TOCKI — Bidirectional I/O pin / Timer0 clock input |
| 引脚 2 | GP4/AN4 — Bidirectional I/O pin / analog comparator input |
| 引脚 3 | GP3/MCLR/VPP — Bidirectional I/O pin / Master Clear (Reset) / Programming voltage |
| 引脚 4 | GP2/AN2/INT — Bidirectional I/O pin / analog input / external interrupt |
| 引脚 5 | GP1/AN1 — Bidirectional I/O pin / analog comparator input |
| 引脚 6 | GP0/AN0 — Bidirectional I/O pin / analog comparator input |
| 引脚 7 | VSS — Ground reference |
| 引脚 8 | OSC2/CLKOUT — Oscillator crystal connection / clock output |
| 引脚 9 | OSC1/CLKIN — Oscillator crystal connection / external clock input |
| 引脚 10 | GP6/AN5 — Bidirectional I/O pin / analog comparator input |
| 引脚 11 | GP7 — Bidirectional I/O pin |
| 引脚 12 | NC — Not connected (per datasheet) |
| 引脚 13 | VDD — Positive supply voltage |
| 引脚 14 | NC — Not connected (per datasheet) |
典型应用
PIC16LC505-04I/SL 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： PIC16LC505-04I/SL ——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 | 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 |
关键差异点
- Lowest voltage threshold in PIC16C5xx 14-SOIC family （对比 PIC16C505-04I/SL)
- Industrial temperature range for harsh environments （对比 PIC16C505-04E/SL)
- Lowerest-cost OTP programming at production volumes （对比 PIC16F505-I/SL)
设计说明
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.
合规信息
RoHS compliant per Microchip product page. Industrial temperature range -40C to +85C; not AEC-Q100 qualified for automotive.
