PIC16LF1566T-I/SS - 8-Bit MCU 14KB Flash 28-SSOP | Microchip
MPN： PIC16LF1566T-I/SS ✓ 啟用中PIC16LF1566T-I/SS 概覽
A microcontroller (MCU) is a single-chip computer containing a processor core, program memory (Flash), data memory (RAM), and integrated peripherals such as ADC, timers, and communication interfaces. The PIC16LF1566 belongs to the PIC16 family of 8-bit RISC microcontrollers from Microchip, positioned in the product hierarchy as: 8-bit MCU -> PIC16 family -> enhanced mid-range core -> flash-based general-purpose microcontroller. It operates from a 1.8V to 3.6V supply, making it part of the low-power "LF" variant family optimized for battery-powered applications.
Key features include eXtreme Low Power (XLP) technology for sleep currents as low as , two independent 10-bit ADCs for parallel sampling, hardware CVD for mTouch capacitive touch sensing, and 25 digital I/O pins. The PIC16LF1566 family supports mutual-capacitance output drivers for advanced touch interfaces, while 14KB Flash (8K x 14 words) provides ample code space for mTouch firmware stacks and application logic.
The device leverages Microchip's enhanced mid-range 16-bit instruction set (with 8-bit data path), supporting C-compiler-friendly architecture and linear memory mapping. The dual-ADC architecture is particularly suited for simultaneous touch channel scanning and sensor compensation, eliminating the need for external analog multiplexers. Configurable logic cells and multiple timers (Timer0/1/2) provide flexible waveform generation and event timing.
Typical applications include mTouch capacitive touch buttons and sliders in consumer appliances, water-leak detection sensors, proximity-sensing human-machine interfaces, IoT edge nodes with low duty-cycle wake-up, and battery-powered industrial sensors. The combination of two ADCs and hardware CVD makes the PIC16LF1566 particularly well-suited for multi-channel touch panels where scan time directly affects user experience.
When designing with this device, ensure decoupling capacitors are placed close to VDD pins and that the CVD reference capacitor is sized per the mTouch reference design. The 'LF' variant is required for operation below 2.5V - the standard PIC16F1566 variant operates from 2.3V to 5.5V.
This page synthesizes distributor pricing, drop-in PIC16LF family alternatives, and practical mTouch design notes not consolidated in the manufacturer datasheet.
直接替換替代品，適用於 PIC16LF1566T-I/SS — 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： PIC16LF1566T-I/SS （相同外形與佔位） — 差異在於 Package, ADC, Operating Temperature, Timers, Mounting Type.
PIC16F1566-I/SS
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC16LF1566-I/SP
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC16LF1566-E/SS
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC16LF1566T-I/SO
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC16LF1567-I/SS
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC16LF1559T-I/SS
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC16LF1566T-I/SS 最大額定值與電氣特性
| Architecture | PIC16 enhanced mid-range 8-bit RISC |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data Memory (RAM) | 1 KB |
| CPU Speed | 32 MHz (8 MIPS) |
| Operating Voltage | 1.8 V to 3.6 V |
| I/O Pins | 25 |
| ADC | 2x 10-bit, up to 23 analog channels, 600 ksps total |
| Hardware CVD Module | Yes (mTouch capacitive sensing) |
| Timers | Timer0, Timer1, Timer2 (configurable) |
| 封裝 | 28-pin SSOP (5.30 mm body width) |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40 C to +85 C (Industrial) |
| MSL 等級 | 1 |
| RoHS 狀態 | Compliant |
| Lead-Free | Yes |
PIC16LF1566T-I/SS 腳位配置
| 腳位 1 | RA3/AN3/C1IN+/CVDREF — Port A bit 3 / Analog input 3 / Comparator 1 non-inverting input / CVD reference |
| 腳位 2 | RA4/AN4/C1OUT/T1G — Port A bit 4 / Analog input 4 / Comparator 1 output / Timer1 gate |
| 腳位 3 | RA5/AN5/C2IN+/SS/HSCSD1 — Port A bit 5 / Analog input 5 / Comparator 2 non-inverting input / HSCSD channel 1 |
| 腳位 4 | RA6/AN6/C2OUT/HSCSD2 — Port A bit 6 / Analog input 6 / Comparator 2 output / HSCSD channel 2 |
| 腳位 5 | RA7/AN7/HSCSD3 — Port A bit 7 / Analog input 7 / HSCSD channel 3 |
| 腳位 6 | VSS — Ground reference |
| 腳位 7 | VDD — Positive supply voltage (1.8V to 3.6V) |
| 腳位 8 | RA0/AN0/CVDREF/C1IN0- — Port A bit 0 / Analog input 0 / CVD reference / Comparator 1 input |
| 腳位 9 | RA1/AN1/C1IN1-/CVDTX — Port A bit 1 / Analog input 1 / Comparator 1 input / CVD transmit |
| 腳位 10 | RA2/AN2/C2IN0-/CVDRX — Port A bit 2 / Analog input 2 / Comparator 2 input / CVD receive |
| 腳位 11 | RC0/AN16/HSCSD4 — Port C bit 0 / Analog input 16 / HSCSD channel 4 |
| 腳位 12 | RC1/AN17/HSCSD5 — Port C bit 1 / Analog input 17 / HSCSD channel 5 |
| 腳位 13 | RC2/AN18/HSCSD6 — Port C bit 2 / Analog input 18 / HSCSD channel 6 |
| 腳位 14 | RC3/AN19/HSCSD7 — Port C bit 3 / Analog input 19 / HSCSD channel 7 |
| 腳位 15 | RC4/AN20/HSCSD8 — Port C bit 4 / Analog input 20 / HSCSD channel 8 |
| 腳位 16 | RC5/AN21/HSCSD9 — Port C bit 5 / Analog input 21 / HSCSD channel 9 |
| 腳位 17 | RC6/AN22/HSCSD10 — Port C bit 6 / Analog input 22 / HSCSD channel 10 |
| 腳位 18 | RC7/AN23/HSCSD11 — Port C bit 7 / Analog input 23 / HSCSD channel 11 |
| 腳位 19 | VSS — Ground reference |
| 腳位 20 | VDD — Positive supply voltage (1.8V to 3.6V) |
| 腳位 21 | RB0/AN8/C1IN2-/HSCSD12 — Port B bit 0 / Analog input 8 / Comparator 1 input / HSCSD channel 12 |
| 腳位 22 | RB1/AN9/C2IN1-/HSCSD13 — Port B bit 1 / Analog input 9 / Comparator 2 input / HSCSD channel 13 |
| 腳位 23 | RB2/AN10/HSCSD14 — Port B bit 2 / Analog input 10 / HSCSD channel 14 |
| 腳位 24 | RB3/AN11/C1IN3-/HSCSD15 — Port B bit 3 / Analog input 11 / Comparator 1 input / HSCSD channel 15 |
| 腳位 25 | RB4/AN12/HSCSD16 — Port B bit 4 / Analog input 12 / HSCSD channel 16 |
| 腳位 26 | RB5/AN13/HSCSD17 — Port B bit 5 / Analog input 13 / HSCSD channel 17 |
| 腳位 27 | RB6/ICSPCLK/ICDCLK — Port B bit 6 / In-Circuit Serial Programming clock / ICD clock |
| 腳位 28 | RB7/ICSPDAT/ICDDAT — Port B bit 7 / In-Circuit Serial Programming data / ICD data |
典型應用
PIC16LF1566T-I/SS 適用於 6 應用s: mTouch Capacitive Touch Buttons, Water Leak Detection Sensors, Proximity Sensing HMIs, IoT Edge Sensor Nodes, Battery-Powered Industrial Sensors, Touch Slider and Wheel Interfaces.
mTouch Capacitive Touch Buttons
The PIC16LF1566T-I/SS is purpose-built for mTouch capacitive touch button panels in consumer appliances and industrial controls. Its integrated hardware CVD module automates mutual-capacitance scanning across up to 23 channels, eliminating external analog MUX ICs and reducing BOM cost by 20-30%. The two independent 10-bit ADCs enable simultaneous touch and reference channel measurement for real-time drift compensation - critical for reliable operation across temperature and humidity changes. With 14KB Flash, the device runs Microchip's mTouch reference firmware stack with headroom for application logic. The 1.8V-3.6V supply supports direct battery operation from 2x AA cells.
推薦
Water Leak Detection Sensors
The PIC16LF1566T-I/SS is well-suited for battery-powered water-leak detection sensors in smart-home and building-automation applications. The hardware CVD module detects capacitive changes from water contact on PCB traces or external sensors, while XLP low-power technology enables multi-year battery life from a coin cell. The dual-ADC architecture supports simultaneous leak detection and battery-voltage monitoring for predictive maintenance alerts. Operating from 1.8V, the part runs directly from a CR2032 coin cell with no boost converter needed, simplifying the analog supply chain.
推薦
Proximity Sensing HMIs
The PIC16LF1566T-I/SS enables proximity-sensing human-machine interfaces in automotive center stacks and industrial control panels. Its hardware CVD module detects hand approach up to several centimeters before contact, enabling wake-on-approach and gesture-initiated UI responses. The 32MHz CPU executes touch and proximity scanning in under 200us per channel, supporting fluid user experience with up to 23 sensor channels. Industrial temperature range (-40C to +85C) and 1.8V-3.6V operation allow deployment in harsh automotive environments with direct 3.3V supply.
推薦
IoT Edge Sensor Nodes
The PIC16LF1566T-I/SS provides integrated sensing and processing for low-power IoT edge nodes. Its two 10-bit ADCs with hardware CVD support environmental sensors (capacitive humidity, soil moisture, proximity) alongside traditional analog inputs, while the 14KB Flash accommodates TinyOS-style or custom protocol stacks. XLP low-power modes combined with 1.8V-3.6V operation enable multi-year battery life from 2x AA cells. The 32MHz CPU performs local signal processing and filtering before transmitting aggregated data, reducing wireless airtime and extending system battery life by 40-60% versus polled architectures.
推薦
Battery-Powered Industrial Sensors
The PIC16LF1566T-I/SS supports industrial sensor applications requiring low standby power and integrated capacitive sensing. Its XLP technology delivers typical sleep currents below 1uA (consult datasheet for exact value), enabling multi-year battery life in remote monitoring installations. The dual-ADC architecture supports simultaneous measurement of process variables (temperature, pressure via analog transducers) and capacitive position/proximity sensors, reducing component count in industrial instrumentation. The 1.8V-3.6V supply accommodates lithium primary cells directly without regulation.
推薦
Touch Slider and Wheel Interfaces
The PIC16LF1566T-I/SS is ideal for implementing touch sliders and rotary wheel interfaces in consumer audio products, kitchen appliances, and smart thermostats. Its hardware CVD module handles mutual-capacitance scanning along linear or circular electrode patterns, providing sub-millimeter position resolution. With up to 23 channels and 14KB Flash, the device can scan a 12-position slider plus supporting button logic with position smoothing and gesture recognition. Industrial temperature rating ensures reliable operation in kitchen and automotive cabin environments.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16LF1566T-I/SS — 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 | PIC16F1566-I/SS | PIC16LF1566-E/SS | PIC16LF1567-I/SS | PIC16LF1559T-I/SS |
|---|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP (same) | 28-SSOP (same) | 28-SSOP variant of 1567 family | 28-SSOP (same) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 14 KB | 14 KB | 14 KB | 14 KB | 14 KB |
| RAM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| Operating Voltage | 1.8 V to 3.6 V | 2.3 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 |
| ADC | 2x 10-bit, 23 ch | 2x 10-bit, 23 ch | 2x 10-bit, 23 ch | 2x 10-bit, up to 34 ch | 1x 10-bit (single ADC) |
| Hardware CVD Module | Yes | Yes | Yes | Yes | No |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C |
| Pin Count | 28 | 28 | 28 | 28 (also 40/44-pin variants) | 28 |
主要差異化特點
- Integrated dual-ADC architecture for simultaneous touch + reference scanning (對比PIC16LF1559T-I/SS)
- Hardware CVD module automates mutual-capacitance measurement (對比PIC16LF1559T-I/SS)
- 23 analog input channels in 28-pin package (對比PIC16LF1559T-I/SS)
- 1.8V minimum supply voltage supports direct coin-cell operation (對比PIC16F1566-I/SS)
設計說明
Place a 0.1uF decoupling capacitor on each VDD pin (pin 7 and pin 20) within 2mm of the IC body. For mTouch designs, route CVD reference capacitor traces with ground guarding and keep analog input traces away from switching signals to minimize coupling. The CVDTX/CVDRX traces to the touch sensor should be short and matched to preserve measurement symmetry.
Estimated: typical XLP sleep current for the PIC16LF1566 family is <1uA at 25C with RTC running from Timer1; datasheet exact figure to be verified in DS40001826 section on DC characteristics. Use the LF variant when the supply rail is below 2.5V. Verify brown-out reset (BOR) configuration matches the application minimum voltage - the LF BOR default may disable the part below 1.8V.
Do not confuse the PIC16LF1566 (1.8V-3.6V) with the PIC16F1566 (2.3V-5.5V) when designing for low-voltage battery applications. When migrating designs between SSOP and SOIC packages, verify PCB footprint dimensions - SSOP-28 has 5.30mm body width while SOIC-28 has 7.50mm body width, requiring different land patterns. The 'T' suffix indicates Tape & Reel packaging, not a temperature grade.
For mTouch designs with >16 touch channels, sequence ADC sampling to allow settling time between channel switches - 5us minimum between channel changes prevents cross-talk artifacts. Configure the ADC acquisition time register (ADCON1.ACQT) to at least 8 TAD for high-impedance analog sources. Use the hardware CVD module rather than firmware-driven scanning to ensure deterministic timing across all channels.
合規資訊
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - choose PIC16LF1566-E/SS for automotive-grade temperature range. Halogen-free per Microchip environmental compliance documentation.
