PIC12LF1501-I/MC - 8-bit MCU, 1.75KB Flash, 20MHz, 8-DFN | Microchip
MPN： PIC12LF1501-I/MC ✓ 啟用中PIC12LF1501-I/MC 概覽
A PIC12 microcontroller is an 8-bit Reduced Instruction Set Computer (RISC) architecture from Microchip's PIC family, featuring a Harvard architecture with separate program and data buses. The 12-series denotes small-pin-count devices (6-8 pins), historically used for glue logic replacement, simple sensor interfaces, and cost-sensitive embedded control. The "LF" prefix indicates the wide-voltage, low-power variant supporting 1.8V to 3.6V operation, while the "F" mid-letter indicates Flash program memory - the foundation of the modern PIC ecosystem. PIC12F microcontrollers sit in the hierarchy: microcontroller -> embedded MCU -> 8-bit MCU -> PIC12 series -> PIC12F1501 sub-family.
Key features include six I/O pins with individual direction control, four 10-bit ADC channels with internal voltage reference support, enhanced PWM module with up to three outputs, configurable logic cell (CLC), numerically controlled oscillator (NCO), and complementary waveform generator (CWG). Peripherals also include a watchdog timer with its own oscillator, brown-out detect/reset, power-on reset, and an in-circuit serial programming (ICSP) interface. The 8-bit core executes most instructions in one cycle, delivering up to 5 MIPS at 20 MHz while consuming roughly 1.8 mA active and sub-microamp currents in sleep.
Architecturally, the device uses a 14-bit instruction word Flash and 8-bit data path, with the CPU core, peripherals, and I/O tied to an internal peripheral bus. The CWG and NCO peripherals enable sophisticated waveform synthesis in hardware, often replacing external timers or DACs in lighting, motor-control, and resonant-driver designs. Internal oscillator calibration to +/-1 percent provides timing accuracy suitable for UART baud-rate generation without external crystals.
Typical applications include IoT sensor nodes, low-power wireless transmitters, LED lighting controllers, battery chargers, handheld consumer devices, fan controllers, and remote controls. Designers select this part when PCB area is constrained to roughly 6 mm^2 and the application needs on-board intelligence with minimal standby current.
Key design consideration: although the DFN package has an exposed thermal pad, the dominant thermal constraint in 8-pin PIC devices is the small pin count, not power dissipation. Validate your I/O budget and ADC channel requirements early - the six I/O pins must serve ICSP, reset, and your application simultaneously.
This page synthesizes distributor pricing, drop-in alternative analysis across the PIC12 and PIC16 families, and practical low-power design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 PIC12LF1501-I/MC — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC12LF1501-I/MC （相同外形與佔位） — 差異在於 Package, MSL Level, Maximum CPU Speed, ADC, Core Architecture.
PIC12F1501-I/MC
✅ 直接替換📋 參考替代品（不在目錄中）
PIC12LF1501-E/MC
✅ 直接替換聯絡詢價
查看資料表 →PIC12LF1501T-I/MC
✅ 直接替換聯絡詢價
查看資料表 →PIC12F1501T-I/MC
✅ 直接替換📋 參考替代品（不在目錄中）
PIC12LF1552-I/MC
✅ 直接替換📋 參考替代品（不在目錄中）
PIC12LF1501-I/MC 最大額定值與電氣特性
| Core Architecture | PIC 8-bit RISC |
| Core Size | 8-bit |
| Instruction Word Width | 14-bit |
| Program Memory Type | Flash |
| Program Memory Size | 1.75 KB (1K x 14) |
| RAM Size | 64 x 8 bytes |
| EEPROM Size | None (emulated in Flash) |
| Maximum CPU Speed | 20 MHz (5 MIPS) |
| Operating Voltage Range | 1.8 V to 3.6 V |
| I/O Pins | 6 |
| ADC Resolution | 10-bit |
| ADC Channels | 4 |
| PWM Channels | Up to 3 (Enhanced PWM) |
| 封裝 | 8-pin DFN (2x3 mm) with exposed pad |
| 工作溫度範圍 | -40C to +85C (Industrial) |
| 安裝類型 | Surface Mount |
| MSL 等級 | 1 (unlimited floor life) |
| RoHS 狀態 | Compliant |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT, CLC, NCO, CWG |
| Connectivity | None (no UART/SPI/I2C hardware in base variant) |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
PIC12LF1501-I/MC 腳位配置
| 腳位 1 | VDD — Positive power supply (1.8V to 3.6V) |
| 腳位 2 | RA5 — Bidirectional I/O / PWM output / ADC input |
| 腳位 3 | RA4 — Bidirectional I/O / CWG output / ADC input |
| 腳位 4 | RA3/MCLR — Input only / Master Clear reset (active low) |
| 腳位 5 | RA2 — Bidirectional I/O / CLC output / ADC input |
| 腳位 6 | RA1/ICSPCLK — Bidirectional I/O / ICSP clock / CWG output |
| 腳位 7 | RA0/ICSPDAT — Bidirectional I/O / ICSP data / ADC input |
| 腳位 8 | VSS — Ground reference |
| 腳位 EP | EPAD — Exposed thermal pad - tie to VSS for thermal dissipation |
典型應用
PIC12LF1501-I/MC 適用於 6 應用s: Coin-Cell IoT Sensor Node, LED Lighting Controller, Remote Control / IR Transmitter, Battery Charger / Monitor, Fan / Motor Speed Controller, Consumer Handheld Device Logic.
Coin-Cell IoT Sensor Node
The PIC12LF1501-I/MC is well suited for battery-powered IoT sensor nodes operating from a single CR2032 coin cell. Its 1.8V minimum VIN enables deeper discharge than 2.3V-only MCUs, while the 20 nA sleep current allows duty-cycled wake/sleep operation for years on a single cell. The 10-bit ADC with 4 channels reads temperature, light, or analog sensors, and the 6 I/O pins drive a low-power RF transmitter or LoRa module via bit-banged SPI. The 8-DFN footprint (6 mm^2) lets the entire sensor node fit inside a CR2032 holder footprint.
推薦
LED Lighting Controller
The PIC12LF1501-I/MC's enhanced PWM module with up to 3 outputs, plus the complementary waveform generator (CWG) and numerically controlled oscillator (NCO) peripherals, make it an excellent LED lighting controller. The CWG can generate complementary PWM outputs for driving a half-bridge LED driver or buck converter without external logic. Combined with the 10-bit ADC for ambient-light feedback and 6 I/O for status LEDs and button input, the device replaces several discrete components. The wide 1.8-3.6V range supports 2xAA battery-powered decorative LED strips.
推薦
Remote Control / IR Transmitter
The PIC12LF1501-I/MC is ideal for IR remote controls and wireless key-fob transmitters where standby current dominates battery life. Its 20 nA sleep current allows a CR2032 to last the shelf life of the product, while the CWG peripheral can generate 38 kHz carrier waveforms for IR modulation without CPU overhead. The 6 I/O pins accommodate a 4x3 matrix keypad or 6 individual buttons. The 1.8V minimum VIN lets the device operate reliably down to the battery's end-of-life voltage.
推薦
Battery Charger / Monitor
Use the PIC12LF1501-I/MC as a single-cell lithium or NiMH charger controller. The 10-bit ADC monitors battery voltage, charge current (via sense resistor), and temperature (via NTC thermistor), while the PWM drives a switching element or linear regulator. The CLC peripheral implements state-machine logic for CC/CV charging profiles in hardware, freeing the CPU for display and safety checks. The 8-DFN package fits inside the battery compartment of handheld devices.
推薦
Fan / Motor Speed Controller
The PIC12LF1501-I/MC controls small DC fans or brushless DC motors using the enhanced PWM for speed regulation and the CWG for synchronous rectification timing. The 20 MHz instruction rate provides tight feedback loops (sub-100 us cycle time) for tachometer-based closed-loop speed control. The 10-bit ADC reads back-EMF or Hall-sensor signals for sensorless or sensored BLDC commutation. Low sleep current suits battery-powered cooling fans in laptops or portable equipment.
推薦
Consumer Handheld Device Logic
The PIC12LF1501-I/MC serves as a low-cost user-interface controller in consumer handhelds such as toys, personal care devices, and electronic wearables. Its 6 I/O drive button matrices, status LEDs, and haptic feedback elements; the 10-bit ADC reads capacitive touch or potentiometer inputs. The compact 8-DFN package (2x3 mm) integrates into space-constrained wearable designs, and 1.8V operation supports direct Li-ion battery connection without an LDO.
推薦
推薦產品摘要
工程參考資料，適用於 PIC12LF1501-I/MC — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC12F1501-I/MC | PIC12LF1501-E/MC | PIC12LF1501T-I/MC | PIC12LF1552-I/MC |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 8-DFN (2x3 mm) | 8-DFN (2x3 mm) - same | 8-DFN (2x3 mm) - same | 8-DFN (2x3 mm) - same | 8-DFN (2x3 mm) - same |
| Program Memory | 1.75 KB Flash | 1.75 KB Flash | 1.75 KB Flash | 1.75 KB Flash | 2 KB Flash |
| RAM Size | 64 bytes | 64 bytes | 64 bytes | 64 bytes | 64 bytes |
| Operating Voltage | 1.8V to 3.6V | 2.3V to 5.5V | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V |
| Max CPU Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| I/O Pins | 6 | 6 | 6 | 6 | 6 |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C |
主要差異化特點
- Lower minimum operating voltage (1.8V) than the standard F variant (對比PIC12F1501-I/MC)
- Extended temperature grade option in the same 8-DFN footprint (對比PIC12LF1501-E/MC)
- Compact 8-DFN (2x3 mm) footprint vs PDIP-8 and SOIC-8 alternatives (對比PIC12F1501-I/P (PDIP-8))
設計說明
Estimated: at 20 MHz active from a 3.3V supply, the PIC12LF1501-I/MC consumes approximately 1.8 mA (6 mW). For battery life calculations, the dominant figure is sleep current (~20 nA with WDT off, ~350 nA with WDT on) rather than active current. A typical duty cycle of 0.1 percent (1 ms active per second) yields an average current of about 2 uA, allowing a 220 mAh CR2032 to last over 12 years.
The 8-DFN package has an exposed thermal pad that should be soldered to a ground pad on the PCB for mechanical reliability and thermal dissipation. Although power dissipation in an 8-pin PIC is typically <10 mW, the EPAD solder joint is the primary mechanical anchor - without it the package can crack under thermal stress or board flex. Use at least 4 thermal vias under the pad to the inner ground plane.
Pin 4 (RA3/MCLR) is input-only and serves as the Master Clear reset by default. To use RA3 as a digital input, the MCLRE configuration bit must be cleared in the configuration word - otherwise the pin remains a reset input. Also note that RA3 lacks the weak pull-up that other I/O pins have, so an external pull-up is required for input-mode use. The ICSP pins (RA0/RA1) double as I/O but should not be loaded heavily during programming.
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 1) with the ground return to the VSS pin (pin 8) via a short, wide trace. For ADC accuracy, add a 10 uF bulk capacitor near the VDD pin if the supply impedance exceeds 1 ohm. Keep analog input traces away from PWM and CWG outputs to minimize crosstalk. The 8-DFN's EPAD provides the shortest ground return - prefer a single ground plane with the EPAD stitched to it.
合規資訊
RoHS and REACH compliant per Microchip product page. Lead-free (Pb-free) reflow-compatible. Halogen-free per Microchip's standard 8-pin PIC family. Not AEC-Q100 qualified - choose PIC12LF1501-E/MC for extended temperature, or contact Microchip for automotive-grade variants.
