PIC16LF1554-E/SL - 8-Bit MCU, 7KB Flash, 14-SOIC | Microchip
料号： PIC16LF1554-E/SL ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.8 | $1.80 |
| 10 | $1.6 | $16.00 |
| 100 | $1.39 | $139.00 |
| 500 | $1.2 | $600.00 |
| 1,000 | $1.08 | $1,080.00 |
PIC16LF1554-E/SL 概述
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and programmable peripherals; the PIC16LF1554 belongs to the PIC16F family of 8-bit MCUs, sits under Microchip's enhanced mid-range core architecture, and is targeted at general-purpose and touch-sensing (mTouch) designs. The "LF" prefix denotes the wide-voltage, low-power variant optimized for battery-friendly operation, falling under the broader category of embedded microcontrollers and semiconductors.
Key features of the PIC16LF1554 include eXtreme Low Power (XLP) technology for nanoWatt sleep currents, two 10-bit ADC modules with hardware CVD support for capacitive touch sensing, support for I2C, SPI, and UART (with EUSART) serial interfaces, two PWM/Signal Measurement Timer peripherals, an integrated temperature indicator, and 12 I/O pins. The -E suffix indicates an extended industrial temperature grade of -40C to +125C.
Internally, the PIC16LF1554 uses a Harvard-architecture 8-bit CPU with 14-bit instruction words, an Interrupt Controller supporting both interrupt-on-change and core-based interrupts, a 32 kHz internal oscillator for low-power sleep, and a configurable 16 MHz high-frequency internal oscillator. This combination allows the MCU to wake quickly for sampling and return to deep sleep between events, supporting multi-year battery life in mTouch and IoT sensor applications.
Typical applications include mTouch capacitive touch buttons, sliders, and proximity sensors, consumer-electronics user interfaces, low-power IoT sensor nodes, household appliances with touch keypads, and industrial control panels. The 11 analog channels and hardware CVD make the part a strong fit for cost-sensitive touch UIs, while the small 14-SOIC footprint allows placement in space-constrained modules.
When designing with the PIC16LF1554, ensure the supply decoupling capacitor is placed close to VDD with a 100 nF ceramic in parallel with a bulk capacitor, and place the CVD shielding traces to minimize moisture intrusion. Programming is supported by Microchip's MPLAB X IDE with MPLAB XC8 compiler; pick the PIC16LF1554 when you need a 14-pin, low-voltage, touch-capable MCU.
This page synthesizes distributor pricing for the PIC16LF1554-E/SL as of 2026-09-23, drop-in PIC16 same-family and cross-brand alternatives, and practical design notes not always present in the manufacturer datasheet.
直接替换替代料： PIC16LF1554-E/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： PIC16LF1554-E/SL （相同外形与封装尺寸） ——差异在于 Package, Core Architecture, ADC, Program Memory (Flash), Operating Temperature.
快速对比工具——选择替代料号进行并排对比：
PIC16LF1554-I/SL
✅ 直接替换✓ 有现货
$0.92 / 个
查看数据手册 →PIC16LF1554-E/P
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC16LF1559-E/SL
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC16LF1554-E/SL 最大额定值与电气特性
| Manufacturer | Microchip Technology |
| Series / Family | PIC16F (PIC16LF155x, enhanced mid-range core) |
| Core Architecture | 8-bit PIC enhanced mid-range, 14-bit instruction word |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data SRAM | 512 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 12 |
| ADC | 2 x 10-bit, up to 11 analog channels with hardware CVD |
| Communication Interfaces | I2C, SPI, EUSART (UART) |
| Timers / PWM | 2 x PWM/Signal Measurement Timer peripherals |
| Low-Power Technology | XLP (eXtreme Low Power), nanoWatt sleep |
| 工作温度 | -40C to +125C (industrial, -E grade) |
| 封装 | 14-pin SOIC (SL) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
| MSL 等级 | 1 |
PIC16LF1554-E/SL 引脚配置
| 引脚 1 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
| 引脚 2 | RA5 — Digital I/O / analog input AN5 |
| 引脚 3 | RA4 — Digital I/O / analog input AN4 |
| 引脚 4 | RA3/MCLR — Digital I/O / analog input AN3 / Master Clear reset (input) |
| 引脚 5 | RA2 — Digital I/O / analog input AN2 |
| 引脚 6 | RA1/ICSPCLK — Digital I/O / analog input AN1 / ICSP clock |
| 引脚 7 | RA0/ICSPDAT — Digital I/O / analog input AN0 / ICSP data |
| 引脚 8 | VSS — Ground reference |
| 引脚 9 | RB7 — Digital I/O / analog input AN7 |
| 引脚 10 | RB6 — Digital I/O / analog input AN6 / ICSPCLK (alt) |
| 引脚 11 | RB5 — Digital I/O / analog input AN5 (alt) |
| 引脚 12 | RB4 — Digital I/O / analog input AN4 (alt) |
| 引脚 13 | RC2 — Digital I/O |
| 引脚 14 | RC3 — Digital I/O |
典型应用
PIC16LF1554-E/SL 适用于 6 应用s: mTouch Capacitive Touch Buttons, Low-Power IoT Sensor Nodes, Consumer-Appliance User Interfaces, Industrial Control Panels, Battery-Operated Toys and Wearables, Smart Switches and Lighting Touch Panels.
mTouch Capacitive Touch Buttons
The PIC16LF1554-E/SL is purpose-built for mTouch capacitive touch sensing, with two 10-bit ADCs and up to 11 analog channels feeding hardware CVD (Capacitive Voltage Divider) for robust measurement versus power and temperature drift. In a 4-button keypad application the MCU settles each scan in microseconds, lets the CPU return to nanoWatt sleep, and wakes on a touch above the threshold. Compared with an RC-based touch MCU the LF1554 drops external components, freeing board area for compact consumer appliances. Operating from 1.8 V to 3.6 V it also runs directly from a single Li-MnO2 coin cell for remote controls.
推荐
Low-Power IoT Sensor Nodes
For battery-powered IoT sensors the PIC16LF1554-E/SL combines eXtreme Low Power (XLP) technology with the 1.8 V to 3.6 V supply range to deliver tens of nanoamps in sleep mode while still supporting periodic wake-and-sample cycles. A typical soil-moisture sensor node could power the ADC, take 50 readings, transmit a UART packet and return to sleep under 100 nA average current. Hardware CVD also acts as a built-in ADC guard for ratiometric sensors such as resistive bridges. The 14-SOIC footprint is small enough for in-line cable-mounted modules and the 7 KB Flash comfortably fits BLE/Zigbee co-driver stubs.
推荐
Consumer-Appliance User Interfaces
Household appliances with glass-front panels rely on capacitive touch plus a small MCU. The PIC16LF1554-E/SL drives 8 to 11 touch electrodes through CVD, runs a UART message to the main control board, and stays under 20 mA active current. Its -40C to +125C (-E) temperature grade tolerates the inside of a steam oven or induction-coil enclosure, and the wide 1.8-3.6 V supply accepts the post-regulator rail of a rectified SMPS. Because the part is RoHS compliant in a 14-SOIC, the same PCB line can build both mechanical-knob and touch-front variants with a BOM swap.
推荐
Industrial Control Panels
Industrial-panel backplates often need a local MCU for status LEDs, beep-on-event and a small keypad. The PIC16LF1554-E/SL offers 12 I/O, two PWM channels and EUSART for an RS-485 link, plus 7 KB Flash to host command-set firmware. The -E temperature grade survives -40C cold-storage start-ups and +125C cabinet heat. Its 10-bit ADC reads 4-20 mA loopback resistor voltages and the CVD can serve as a coarse humidity baseline. Through-hole and SOIC variants in the same die reduce inventory across panel families.
推荐
Battery-Operated Toys and Wearables
A wearable activity band or children's toy needs an MCU that wakes on touch or motion and stays asleep the rest of the time. The PIC16LF1554-E/SL pairs the internal 32 kHz LF oscillator with nanoWatt sleep so a 200 mAh CR2032 cell can last more than a year. Its 14-SOIC package fits inside a 25 mm diameter molded enclosure, and 7 KB Flash holds animation tables and gesture state machines. Hardware CVD can replace mechanical buttons entirely, raising the IP rating against sweat or splash.
推荐
Smart Switches and Lighting Touch Panels
Wall-mounted smart-light switches need a low-power MCU behind a glass face and a UART or RF link to the hub. The PIC16LF1554-E/SL scans 4 to 8 capacitive pads, drives the relay or TRIAC via one of its two PWM peripherals, and reports state changes over EUSART to a paired radio module. The -40C to +125C grade ensures reliability in unheated corridors, and the 1.8-3.6 V range allows direct connection to a small energy-harvesting supply. CFD hardware makes the touch UI robust against faceplate overlays up to 4 mm thick.
推荐
推荐产品汇总
工程参考数据： PIC16LF1554-E/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 | PIC16LF1554-I/SL | PIC16LF1554-E/P | PIC16LF1559-E/SL |
|---|---|---|---|---|
| Package | 14-SOIC | 14-SOIC | 14-PDIP | 14-SOIC |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 7 KB | 7 KB | 7 KB | 7 KB |
| SRAM | 512 B | 512 B | 512 B | 512 B |
| Max CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 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 |
| Operating Temperature | -40C to +125C | -40C to +85C | -40C to +125C | -40C to +125C |
| ADC | 2 x 10-bit, 11 channels, CVD | 2 x 10-bit, 11 channels, CVD | 2 x 10-bit, 11 channels, CVD | 2 x 10-bit, more analog channels, CVD |
关键差异点
- Hardware CVD touch support eliminates external touch IC BOM （对比 PIC16LF1554-I/SL with external CVD-discrete RC implementation)
- Wider extended temperature grade than -I variant （对比 PIC16LF1554-I/SL)
- Native 14-SOIC footprint shared with PIC16F family （对比 PIC16LF1554-E/P 14-PDIP)
设计说明
Place a 100 nF X7R ceramic bypass capacitor within 2 mm of the VDD pin (pin 1) in parallel with a 1 uF bulk capacitor at the supply plane. The PIC16LF1554-E/SL's XLP sleep current is rated at microampere levels, so a noisy or shared supply rail will dramatically inflate the average quiescent draw and shorten battery life. Use a low-Iq LDO such as Microchip MCP1700 for best performance.
Many broken capacitive-touch prototypes come from omitting the CVD guarding traces or running them too close to high-frequency signals (switching converters, RF traces, or even the clock trace). Route a guard ring tied to a fixed voltage around each touch electrode and pour a ground plane one trace-space away beneath the sensor pads, otherwise humidity drift or hand-proximity noise will desensitize the touch UI.
Keep the ICSP clock (RA1/ICSPCLK) and ICSP data (RA0/ICSPDAT) traces shorter than 50 mm and avoid series resistors in the ICSP path; production programming problems are often solved by routing these to accessible test pads. Also place a 4.7 kohm pull-up on MCLR/RA3 for in-circuit programming reliability; the -E extended temperature grade greatly helps if the board sees wide thermal cycling.
合规信息
RoHS compliant per Microchip product page. Datasheet doc number 40001761E. AEC-Q100 not applicable (consumer/industrial MCU, not automotive qualified).
