PIC16LF1503T-I/ST - 8-bit MCU, 3.5KB Flash, 20MHz | Microchip
料号： PIC16LF1503T-I/ST ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.95 | $0.95 |
| 10 | $0.88 | $8.80 |
| 100 | $0.79 | $79.00 |
| 500 | $0.71 | $355.00 |
| 1,000 | $0.62 | $620.00 |
| 2,500 | $0.55 | $1,375.00 |
PIC16LF1503T-I/ST 概述
An 8-bit microcontroller (MCU) is a single-chip computer that combines a CPU, non-volatile program memory (Flash), volatile data memory (RAM), and configurable peripherals (ADC, timers, comparators, PWM, communication modules) on one silicon die. Within the broader taxonomy, the PIC16LF1503 belongs to the Microchip PIC16 family -> 8-bit PIC MCU -> microcontroller -> embedded computing IC -> semiconductor. The LF prefix designates the low-voltage (1.8-3.6V) variant of the PIC16F1503 family, optimized for battery-powered and energy-sensitive applications where standard 5V operation is not required.
Key features include 3.5KB Flash allowing roughly 2K single-word instructions, 128B RAM for data scratchpad storage, 12 I/O pins with interrupt-on-change capability, an integrated 10-bit ADC with multiple input channels, and nanoWatt XLP (eXtreme Low Power) technology. The nanoWatt XLP technology provides multiple power-saving modes including Sleep with currents below 1 uA, enabling multi-year battery life on coin cells.
The PIC16LF1503 architecture uses a 14-bit instruction word RISC core optimized for deterministic execution and C-friendly code generation. Its enhanced mid-range instruction set supports hardware multiply, larger linear program/data addressing, and standardized peripheral mapping across the PIC16 family, enabling code migration across pin counts from 8 to 64 with minimal modification. Internal oscillator calibration is factory-trimmed, reducing external component count.
Typical applications include consumer electronics sub-modules, low-cost sensor interfaces, LED driving controllers, household appliance control, handheld instruments, IoT edge sensor nodes, and battery-powered remote controls. Designers choose this part when program memory fits within 3.5KB, I/O count does not exceed 12, and ADC precision of 10 bits is sufficient.
When designing with this MCU, plan current budget carefully using Sleep and Idle modes. The MSSP (I2C/SPI) and EUSART modules share pins with digital I/O, so simultaneous peripheral use requires pin-function conflict checking. For new designs, confirm that the TSSOP-14 package variant is the right one - PIC16LF1503 is also offered in PDIP-8, MSOP-8, QFN-16, SOIC-14, TSSOP-14, and QFN-20 packages under different suffixes.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not collected in any single manufacturer or distributor page, providing engineers with a consolidated reference for sourcing and replacement decisions.
直接替换替代料： PIC16LF1503T-I/ST ——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： PIC16LF1503T-I/ST （相同外形与封装尺寸） ——差异在于 Package, Timers, Operating Temperature, ADC, Core Architecture.
快速对比工具——选择替代料号进行并排对比：
PIC16LF1503-I/ST
✅ 直接替换✓ 有现货
$0.79 / 个
查看数据手册 →PIC16LF1503T-I/SL
✅ 直接替换✓ 有现货
$0.74 / 个
查看数据手册 →PIC16LF1503-E/ST
✅ 直接替换✓ 有现货
$1.05 / 个
查看数据手册 →PIC16F1503T-I/ST
✅ 直接替换📋 参考替代料（不在目录中）
PIC16LF1554T-I/ST
✅ 直接替换✓ 有现货
$0.95 / 个
查看数据手册 →PIC16LF1508T-I/ST
✅ 直接替换📋 参考替代料（不在目录中）
PIC16LF1503T-I/ST 最大额定值与电气特性
| Product Type | 8-bit Microcontroller (MCU) |
| Core Architecture | PIC16 enhanced mid-range (RISC, 14-bit instruction word) |
| Instruction Set | 14-bit, single-cycle except branches |
| Program Memory (Flash) | 3.5 KB (2K x 14 words) |
| Data RAM | 128 bytes |
| Maximum CPU Speed | 20 MHz instruction frequency |
| I/O Pins | 12 |
| ADC | 10-bit, multiple channels |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| 工作温度 | -40C to +85C (Industrial, I grade) |
| 封装 | 14-pin TSSOP (ST) |
| 安装类型 | Surface Mount |
| Low-Power Technology | nanoWatt XLP |
| RoHS 状态 | Compliant |
| Lead-Free / Lead-Free Finish | Yes |
| Communications | MSSP (I2C/SPI), EUSART (asynchronous/synchronous) |
| Timers | Multiple 8-bit and 16-bit timers (periphery count varies) |
PIC16LF1503T-I/ST 引脚配置
| 引脚 1 | RA5 — Digital I/O / input only |
| 引脚 2 | RA4 — Digital I/O |
| 引脚 3 | RA3 — Digital I/O / MCLR |
| 引脚 4 | RA2 — Digital I/O / analog input |
| 引脚 5 | RA1 — Digital I/O / analog input |
| 引脚 6 | RA0 — Digital I/O / analog input |
| 引脚 7 | VSS — Ground |
| 引脚 8 | RC5 — Digital I/O |
| 引脚 9 | RC4 — Digital I/O |
| 引脚 10 | RC3 — Digital I/O / SCL for I2C |
| 引脚 11 | RC2 — Digital I/O |
| 引脚 12 | RC1 — Digital I/O |
| 引脚 13 | RC0 — Digital I/O |
| 引脚 14 | VDD — Positive supply (1.8V to 3.6V) |
典型应用
PIC16LF1503T-I/ST 适用于 6 应用s: Battery-Powered IoT Sensor Node, Consumer LED Lighting Controller, Household Appliance User Interface, Handheld Measurement Instrument, Remote Control Transmitter, Industrial Sensor Conditioning Module.
Battery-Powered IoT Sensor Node
The PIC16LF1503T-I/ST suits battery-powered IoT sensor nodes because of its nanoWatt XLP technology with sub-uA Sleep current and its 1.8V to 3.6V VDD range, which is directly compatible with 2x AA alkaline, single Li-ion, or coin-cell batteries. The integrated 10-bit ADC handles analog sensor interfaces (temperature, light, gas) without external components. Using Sleep between samples, average current drops to single-digit microamps and enables multi-year battery life.
推荐
Consumer LED Lighting Controller
The PIC16LF1503T-I/ST fits LED lighting controllers by providing PWM-capable peripherals and a 10-bit ADC for current/voltage sensing. Operating from 1.8-3.6V matches typical single-cell Li-ion or USB-powered LED drivers. Hardware CCP/ECCP modules generate precise PWM dimming curves without CPU intervention, freeing the core for color-mixing math and button debouncing. The 3.5KB Flash accommodates basic mood-lighting presets.
推荐
Household Appliance User Interface
The PIC16LF1503T-I/ST handles household appliance UI boards where it scans capacitive touch pads or matrix keypads, drives LED indicators, and runs the user-interface state machine. Its 12 I/O pins are sufficient for 4x4 matrix keypads with a few extra lines for indicator LEDs or buzzer control. The wide 1.8-3.6V range accommodates 3.3V regulated supplies common in modern appliances.
推荐
Handheld Measurement Instrument
The PIC16LF1503T-I/ST operates in handheld multimeters and environmental meters where low power, ADC integration, and small PCB area are critical. The 10-bit ADC handles sensor conditioning for thermistor, thermopile, or photodiode inputs. nanoWatt XLP modes keep quiescent current below 1 uA, supporting 1000+ hour operation on two AA cells. The TSSOP-14 footprint fits tight handheld enclosures.
推荐
Remote Control Transmitter
The PIC16LF1503T-I/ST is a fit for IR/RF remote control transmitters where it scans matrix buttons, encodes the protocol, and drives an IR LED or sub-GHz radio. The 3.5KB Flash holds common protocols like NEC, RC5, or proprietary codecs. nanoWatt Sleep with wake-on-interrupt ensures that a coin-cell-powered remote lasts years on a single battery.
推荐
Industrial Sensor Conditioning Module
The PIC16LF1503T-I/ST operates in industrial 4-20mA sensor modules where it digitizes analog inputs, performs linearization, and drives a PWM or analog output. The 1.8-3.6V range requires a small LDO upstream, and the 10-bit ADC gives adequate resolution for many transducer types. The TSSOP-14 package suits the small PCB real-estate available inside sensor heads.
推荐
推荐产品汇总
工程参考数据： PIC16LF1503T-I/ST ——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 | PIC16LF1503-I/ST | PIC16LF1503T-I/SL | PIC16LF1503-E/ST | PIC16F1503T-I/ST | PIC16LF1554T-I/ST | PIC16LF1508T-I/ST |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TSSOP-14 (ST) | TSSOP-14 (ST) - same | SOIC-14 (SL) - different but same die | TSSOP-14 (ST) - same | TSSOP-14 (ST) - same | TSSOP-14 (ST) - same | TSSOP-14 (ST) - same |
| Program Memory (Flash) | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 7 KB (larger) | 7 KB (larger) |
| Data RAM | 128 B | 128 B | 128 B | 128 B | 128 B | 256 B (larger) | 256 B (larger) |
| VDD Range | 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 | 2.3 V to 5.5 V (wider) | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Operating Temperature | -40C to +85C (I grade) | -40C to +85C | -40C to +85C | -40C to +125C (extended) | -40C to +85C | -40C to +85C | -40C to +85C |
| I/O Pins | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| Delivery Format | Tape & Reel | Tube / Tray | Tape & Reel | Tube / Tray | Tape & Reel | Tape & Reel | Tape & Reel |
关键差异点
- Lowest-cost TSSOP-14 MCU in PIC16 LF family （对比 PIC16LF1554T-I/ST)
- Tape-and-reel packaging for high-volume assembly （对比 PIC16LF1503-I/ST)
- Standard industrial temperature grade （对比 PIC16LF1503-E/ST)
设计说明
The PIC16LF1503T-I/ST has a 1.8V to 3.6V VDD range. Place a 100 nF decoupling capacitor directly between VDD (pin 14) and VSS (pin 7) with traces as short as possible, plus a bulk 1-10 uF tantalum or ceramic cap if VDD is supplied from a long trace or switching regulator. Use nanoWatt XLP Sleep modes for battery-powered designs - typical Sleep current is below 1 uA.
For TSSOP-14 layout, use 0.65 mm pitch pads and ensure thermal relief is moderate. Route RA3 carefully because it doubles as MCLR; a 10 kohm pull-up plus a decoupling cap (typically 100 nF) is recommended. Analog input pins (RA0-RA2) should be guarded with a ground ring to reduce digital-coupling noise on ADC readings.
Configuration word bits must be set correctly - especially the watchdog timer, low-voltage programming, and oscillator selection bits. Mistakenly leaving LVP enabled without an external pulldown on PGM/RA3 can lock the device out of high-voltage programming. Also confirm that RA3/MCLR is not pulled low inadvertently at startup or the MCU stays in reset.
合规信息
RoHS and lead-free per Microchip product page; not AEC-Q100 qualified. Choose PIC16LF1503-E/ST for extended-temperature applications.
