PIC12LF1572-I/MS - 8-bit 32MHz 3.5KB Flash MCU | Microchip
MPN： PIC12LF1572-I/MS ✓ 啟用中PIC12LF1572-I/MS 概覽
A microcontroller (MCU) is a single-chip computer containing a CPU, non-volatile program memory (Flash), volatile data memory (RAM), and programmable I/O. Within the broader device hierarchy, an MCU is a type of embedded processor (microprocessor with integrated peripherals) classified under microcontrollers, then 8-bit microcontrollers, then the PIC family. The 8-bit PIC RISC architecture executes most instructions in one clock cycle, enabling deterministic timing that is valuable for real-time control loops such as PWM generation, motor commutation, and sensor sampling.
Key features include three independent 16-bit PWMs with their own timers (suitable for high-resolution LED dimming and stepper motor control), a 10-bit ADC with computation (ADC2), a comparator, EUSART (Enhanced USART) for serial communication, and an internal 31kHz to 32MHz oscillator. The LF (low-power) silicon variant extends the supply range down to 1.8V, making it a strong fit for 2x AA / coin-cell applications. The device also supports the PICkit and ICD programming/debug toolchain for in-circuit development.
Architecturally, the PIC12LF1572-I/MS uses a Harvard RISC core with separate program and data buses. The three 16-bit PWM modules can operate independently of CPU execution - once configured, they generate outputs without software intervention, freeing the core for measurement and communication. The 32MHz internal oscillator provides factory-calibrated accuracy and removes the need for external crystals in cost-sensitive designs.
Typical applications include LED lighting controllers, battery-powered sensor nodes, handheld consumer products, fan and pump speed controllers, and general-purpose low-cost embedded control where compact 8-pin footprint and integrated 16-bit PWM resolution are required. The combination of three PWMs and 10-bit ADC makes it especially suited to closed-loop lighting and motor control.
When designing with this part, ensure the supply rail is decoupled with 100nF + 10uF ceramic capacitance placed close to the VDD pin. For accurate ADC readings, configure the ADC2 averaging and add a low-pass RC filter at the analog input. The ICSP programming pins (ICSPCLK/ICSPDAT) share pads with GPIO and may require isolation resistors in production layouts.
This page synthesizes distributor pricing, drop-in same-package alternatives (PIC12F1572-I/MS, PIC12LF1571-I/MS), and practical design notes not consolidated on a single manufacturer or distributor page.
直接替換替代品，適用於 PIC12LF1572-I/MS — 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： PIC12LF1572-I/MS （相同外形與佔位） — 差異在於 Package, Comparators, I/O Pins, Program Memory (Flash), ADC.
PIC12F1572-I/MS
✅ 直接替換聯絡詢價
查看資料表 →PIC12LF1571-I/MS
✅ 直接替換📋 參考替代品（不在目錄中）
PIC12LF1572-I/P
✅ 直接替換聯絡詢價
查看資料表 →PIC12LF1572-I/MF
✅ 直接替換聯絡詢價
查看資料表 →PIC12LF1572-E/MS
✅ 直接替換📋 參考替代品（不在目錄中）
PIC12LF1572-I/MS 最大額定值與電氣特性
| Core Architecture | 8-bit PIC RISC (Harvard) |
| Program Memory (Flash) | 3.5 KB (2K x 14 words) |
| RAM | 256 bytes |
| Maximum CPU Frequency | 32 MHz |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| 封裝 | 8-pin MSOP |
| 工作溫度 | -40C to +85C (Industrial) |
| PWM Channels | 3 x 16-bit (independent timers) |
| ADC | 10-bit with Computation (ADC2) |
| Comparators | Yes (1 or 2, datasheet-specific) |
| Communication | EUSART |
| Internal Oscillator | 31 kHz to 32 MHz (factory calibrated) |
| I/O Pins | 6 GPIO |
| 安裝類型 | Surface Mount |
| MSL 等級 | 1 (per Microchip standard) |
| RoHS 狀態 | Compliant |
PIC12LF1572-I/MS 腳位配置
| 腳位 1 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
| 腳位 2 | RA5/ICSPCLK — GPIO RA5 / ICSP clock (programming) |
| 腳位 3 | RA4/ICSPDAT — GPIO RA4 / ICSP data (programming) |
| 腳位 4 | RA3/MCLR — GPIO RA3 / Master Clear (reset, active low) |
| 腳位 5 | RA2 — GPIO RA2 / analog input / PWM output |
| 腳位 6 | RA1 — GPIO RA1 / analog input / PWM output |
| 腳位 7 | RA0 — GPIO RA0 / analog input / PWM output |
| 腳位 8 | VSS — Ground reference |
典型應用
PIC12LF1572-I/MS 適用於 6 應用s: RGB LED Lighting Controller, Battery-Powered Sensor Node, Stepper Motor / Fan Speed Controller, Handheld Consumer Devices, Digital Power Supply Controller, Automotive Accessory Modules.
RGB LED Lighting Controller
The PIC12LF1572-I/MS is well suited for RGB LED lighting controllers because it provides three independent 16-bit PWM channels, each capable of >65,000 dimming steps for smooth color mixing. With its 1.8 V to 3.6 V supply range, the LF variant can run directly from a 3.3 V regulator or 2x AA cells, eliminating the need for a step-up converter. Place 100nF + 10uF ceramic decoupling on VDD and route each PWM output through a MOSFET driver to power the respective LED string; software updates can be delivered via the EUSART bootloader from a wired or wireless host.
推薦
Battery-Powered Sensor Node
For low-power wireless or wired sensor endpoints, the PIC12LF1572-I/MS offers 256 bytes of RAM and a 10-bit ADC that, when paired with ADC2 averaging, can resolve small sensor signals with low noise. Its wide 1.8-3.6 V supply window matches 2x AA or CR2032 coin cells directly, while the internal 32 MHz oscillator eliminates an external crystal for cost-sensitive designs. Combined with sleep currents under 1uA in the LF part, designers can build multi-year battery-life sensor nodes; the EUSART peripheral can host UART links to a sub-GHz transceiver like the MRF89XA.
推薦
Stepper Motor / Fan Speed Controller
Closed-loop stepper motor or fan speed control benefits from the PIC12LF1572-I/MS's three independent 16-bit PWMs that can generate phased excitation waveforms without CPU intervention. The 10-bit ADC with computation supports back-EMF sensing or tachometer feedback for RPM regulation. The 32 MHz instruction rate delivers deterministic step timing, while the 8-pin MSOP package keeps the design compact inside motor housings. Designers typically pair the MCU with a MOSFET gate driver such as the MCP1416 and a Hall-effect or back-EMF sensing front end.
推薦
Handheld Consumer Devices
Compact consumer products such as remote controls, personal-care appliances, and small toys benefit from the PIC12LF1572-I/MS's small MSOP-8 footprint and low-voltage LF operation. The three 16-bit PWMs can drive haptic feedback motors, RGB indicators, and IR LEDs from a coin cell. Internal oscillator accuracy is sufficient for UART communication with a host device, and the ICSP programming interface allows firmware updates after final assembly using shared GPIO pins for production cost savings.
推薦
Digital Power Supply Controller
The PIC12LF1572-I/MS can serve as a low-cost auxiliary controller in digital power supplies, where its three 16-bit PWMs generate phase-shifted gate-drive signals for multi-phase buck or boost topologies. The 10-bit ADC samples output voltage and current for feedback, while the EUSART provides telemetry to a host MCU. The LF variant supports 1.8 V start-up from auxiliary windings or bootstrap rails, and the wide 1.8-3.6 V range tolerates supply variation during cold-crank or load-dump events.
推薦
Automotive Accessory Modules
For non-safety automotive accessories such as ambient lighting, USB chargers, or HVAC blend-door actuators, the PIC12LF1572-I/MS (industrial grade) provides a compact control platform when paired with proper reverse-battery and load-dump protection. Its three 16-bit PWMs drive RGB ambient strips, and the EUSART links to CAN or LIN transceivers via software UART bit-banging on spare GPIO. Designers should select the -E (extended temperature) variant for under-hood applications requiring -40C to +125C operation.
推薦
推薦產品摘要
工程參考資料，適用於 PIC12LF1572-I/MS — 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 | PIC12F1572-I/MS | PIC12LF1571-I/MS | PIC12LF1572-I/P | PIC12LF1572-I/MF | PIC12LF1572-E/MS |
|---|---|---|---|---|---|---|
| Package | 8-pin MSOP | 8-pin MSOP - same | 8-pin MSOP - same | 8-pin PDIP (through-hole) | 8-pin DFN (SMD) | 8-pin MSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Architecture | 8-bit PIC RISC | 8-bit PIC RISC | 8-bit PIC RISC | 8-bit PIC RISC | 8-bit PIC RISC | 8-bit PIC RISC |
| Flash Memory | 3.5 KB | 3.5 KB | 1.75 KB | 3.5 KB | 3.5 KB | 3.5 KB |
| RAM | 256 bytes | 256 bytes | 128 bytes | 256 bytes | 256 bytes | 256 bytes |
| Maximum Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Supply Voltage | 1.8 V to 3.6 V | 1.8 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| 16-bit PWM Channels | 3 | 3 | 2 | 3 | 3 | 3 |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C |
主要差異化特點
- Three independent 16-bit PWMs with dedicated timers (對比PIC12LF1571-I/MS)
- Wide 1.8 V to 3.6 V supply range (對比PIC12F1572-I/MS)
- Compact 8-pin MSOP package option (對比PIC12LF1572-I/P)
設計說明
Place a 100nF ceramic decoupling capacitor as close as possible to the VDD pin (pin 1) with the ground return via a short trace to pin 8 (VSS). For applications with high PWM switching noise, add a bulk 10uF ceramic or tantalum capacitor on the same VDD rail within 5mm of the device. The LF variant draws microamp-level sleep current, so verify that decoupling capacitors do not introduce leakage paths that exceed the application's standby budget.
Keep the ICSP programming traces (RA4/RA5) accessible on test pads if in-circuit programming is required after assembly. For production boards, add 100 ohm series resistors on ICSPCLK and ICSPDAT to isolate the programmer from the rest of the circuit during programming. Maintain a ground pour under the MSOP package to reduce thermal resistance and improve EMI performance.
Do not leave the MCLR pin floating - tie it to VDD through a 10k ohm pull-up resistor, or configure the MCLR configuration bit to disable external reset. When using the analog inputs, configure the corresponding TRIS and ANSEL bits; otherwise the digital input buffer may interfere with ADC accuracy. Verify that the ICSP programming pins are not held low at power-up or the device will enter programming mode instead of normal execution.
合規資訊
RoHS compliant per Microchip product page. Standard industrial grade (-40C to +85C) is not AEC-Q100 qualified; automotive customers should contact Microchip for AEC-Q100 qualified variants of the PIC12F1572 family.
