PIC16LF18344T-I/SS - 32MHz 8-bit XLP MCU 7KB Flash | Microchip
MPN： PIC16LF18344T-I/SS ✓ 啟用中PIC16LF18344T-I/SS 概覽
A microcontroller (MCU) is an integrated circuit that combines a CPU core, program and data memory, and programmable peripherals into a single chip. PIC microcontrollers use a RISC architecture optimized for deterministic execution and low power consumption, and the PIC16F family extends this with on-chip 12-bit ADC, comparators, PWM, CLC, CWG, and CCP modules that enable system functions without burdening the CPU. The 'LF' prefix indicates the wide 1.8V-3.6V operating range suited to coin-cell, battery, and energy-harvesting designs.
Key features of the PIC16LF18344T-I/SS include 32MHz internal oscillator, 512B RAM, 256B EEPROM, Peripheral Pin Select (PPS) for flexible I/O mapping, and multiple low-power modes such as Sleep, Deep Sleep, and Idle that drop current consumption to single-digit microamperes. The device integrates a 12-bit ADC with Computation (ADCC), up to 17 I/O pins, and supports I2C, SPI, UART, and EUSART communication.
Architecturally, the PIC16LF18344 employs an 8-bit modified Harvard core with separate program and data buses, allowing simultaneous instruction fetch and data access. The XLP technology minimizes active and sleep currents, while Core Independent Peripherals offload timing-critical tasks such as signal generation, conversion sequencing, and event-driven logic.
Typical applications include battery-powered IoT sensors, wearable health and fitness devices, remote controls, low-power wireless sensor nodes, low-energy consumer products, and general-purpose embedded control where small size, low power, and flexible I/O mapping are required. The 20-SSOP package provides compact assembly for small-form-factor PCBs.
When designing with this MCU, select an appropriate supply decoupling scheme (100nF near VDD) and ensure the MCLR pull-up is correctly biased. PPS enables routing of digital peripherals to most I/O pins, simplifying board layout but requiring careful configuration to avoid peripheral pin conflicts.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
直接替換替代品，適用於 PIC16LF18344T-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： PIC16LF18344T-I/SS （相同外形與佔位） — 差異在於 Core Architecture, Package, ADC, Operating Temperature, DAC.
PIC16LF18344-I/SS
✅ 直接替換聯絡詢價
查看資料表 →PIC16F18344T-I/SS
✅ 直接替換📋 參考替代品（不在目錄中）
PIC16LF18344T-I/SO
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC16LF18344-I/GZ
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC16LF18344-E/SS
✅ 直接替換聯絡詢價
查看資料表 →PIC16LF18325T-I/ST
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC16LF18344T-I/SS 最大額定值與電氣特性
| Core Architecture | PIC 8-bit RISC (PIC16) |
| Maximum CPU Frequency | 32 MHz |
| Program Memory (Flash) | 7 KB (4K x 14) |
| Data RAM | 512 B |
| Data EEPROM | 256 B |
| Operating Voltage Range | 2.5 V to 3.6 V |
| I/O Pins | Up to 17 |
| ADC | 12-bit ADC with Computation (ADCC) |
| Communication Peripherals | I2C, SPI, UART, EUSART |
| Peripheral Pin Select (PPS) | Yes |
| Core Independent Peripherals (CIP) | CLC, CWG, CCP, PWM, NCO |
| Low-Power Modes | XLP - Sleep, Deep Sleep, Idle, Doze |
| 工作溫度範圍 | -40C to +85C (Industrial) |
| 封裝 | 20-SSOP (0.209 inch / 5.30 mm body width) |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
PIC16LF18344T-I/SS 腳位配置
| 腳位 1 | VDD — Positive supply voltage |
| 腳位 2 | RA5 — Digital I/O / PPS |
| 腳位 3 | RA4 — Digital I/O / PPS |
| 腳位 4 | RA3/MCLR — Digital I/O or Master Clear (reset) input |
| 腳位 5 | RC1 — Digital I/O / PPS |
| 腳位 6 | RC0 — Digital I/O / PPS |
| 腳位 7 | RA2 — Digital I/O / analog / PPS |
| 腳位 8 | RA1 — Digital I/O / analog / PPS |
| 腳位 9 | RA0 — Digital I/O / analog / PPS |
| 腳位 10 | VSS — Ground reference |
| 腳位 11 | RC7 — Digital I/O / PPS / EUSART |
| 腳位 12 | RC6 — Digital I/O / PPS / EUSART |
| 腳位 13 | RC5 — Digital I/O / PPS |
| 腳位 14 | RC4 — Digital I/O / PPS |
| 腳位 15 | RC3 — Digital I/O / PPS / SCL |
| 腳位 16 | RC2 — Digital I/O / PPS / SDA |
| 腳位 17 | RA7 — Digital I/O / PPS |
| 腳位 18 | RA6 — Digital I/O / PPS |
| 腳位 19 | VSS — Ground reference |
| 腳位 20 | VDD — Positive supply voltage |
典型應用
PIC16LF18344T-I/SS 適用於 6 應用s: Battery-Powered IoT Sensor Nodes, Wearable Health & Fitness Devices, Remote Controls & Consumer IR, Low-Power Wireless Sensor Networks, Industrial Sensor & Control Modules, Smart Home & Building Automation.
Battery-Powered IoT Sensor Nodes
The PIC16LF18344T-I/SS is well suited to battery-powered IoT sensor nodes thanks to its 1.8V-3.6V operating range, XLP eXtreme Low Power technology, and integrated Core Independent Peripherals. The device's Sleep and Deep Sleep modes drop current to single-digit microamperes, while peripherals like CLC, CWG, and NCO continue operating autonomously, enabling years of battery life on coin-cell or 2xAA supplies. Engineers typically pair the MCU with a sub-GHz or LoRa transceiver, sample sensors via the 12-bit ADCC, and let the CIP handle signal conditioning and wake events without CPU intervention.
推薦
Wearable Health & Fitness Devices
The PIC16LF18344T-I/SS supports wearable health and fitness devices by combining low-power operation with a 32MHz CPU capable of running lightweight signal-processing firmware. The 12-bit ADC with Computation (ADCC) oversamples and averages sensor data on-chip, reducing firmware burden for heart-rate, SpO2, and motion-sensor applications. The 20-SSOP package footprint is compact enough for wristbands and patches, and XLP modes enable continuous wear-time between charges. PPS allows designers to remap peripheral pins late in development, accelerating layout iterations on small PCBs.
推薦
Remote Controls & Consumer IR
The PIC16LF18344T-I/SS is ideal for IR remote controls and consumer IR transceivers due to the CWG (Complementary Waveform Generator) which produces precise carrier frequencies for IR modulation without CPU intervention. The NCO (Numerically Controlled Oscillator) CIP allows accurate timing generation at sub-Hz resolution, useful for learning remotes and PWM dimming. With XLP Sleep currents below 1uA, a coin-cell-powered remote can last years on standby. The 7KB Flash accommodates protocol stacks (RC5, RC6, SIRC, NEC) and user-customization code.
推薦
Low-Power Wireless Sensor Networks
For low-power wireless sensor networks, the PIC16LF18344T-I/SS pairs with sub-GHz transceivers such as the MRF89XA or LoRa modules over its SPI or EUSART interfaces. The CIPs handle packet timing, address filtering, and wake-on-radio duty cycling while the CPU remains in Sleep. With 7KB Flash and 512B RAM, the MCU can run simple MAC protocols and small sensor-fusion algorithms. The 1.8V supply aligns with battery chemistries including LiSOCl2 and LiMnO2 primary cells commonly used in remote wireless deployments.
推薦
Industrial Sensor & Control Modules
The PIC16LF18344T-I/SS supports industrial sensor and control modules in factory automation environments where compact PLCs and sensor hubs require deterministic real-time behavior. The 32MHz CPU, 12-bit ADCC, and PPS flexibility enable multi-channel analog and digital sensor interfacing. The Industrial-grade -40C to +85C temperature rating suits most factory-floor deployments, while the -40C to +125C E-grade (PIC16LF18344-E/SS) covers harsh locations. CLCs implement custom logic gates in hardware for safety interlocks and signal debouncing, while PWM channels drive motor control and LED indicators.
推薦
Smart Home & Building Automation
In smart home and building automation, the PIC16LF18344T-I/SS operates as a sub-controller for thermostats, lighting controls, security keypads, and HVAC peripheral modules. Its 1.8V-3.6V range supports 2xAA battery-powered wireless sensors and 3.3V hardwired systems alike, while EUSART and I2C interfaces integrate with wall-bus networks and touchscreen displays. The CIP architecture enables reliable capacitive touch sensing using the ADCC and CWG without taxing the main CPU, while XLP Deep Sleep modes drop standby current to under 1uA for battery sensors that must last 5+ years.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16LF18344T-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 | PIC16LF18344-I/SS | PIC16F18344T-I/SS | PIC16LF18344-E/SS | PIC16LF18344T-I/SO | PIC16LF18344-I/GZ |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SSOP | 20-SSOP (same) | 20-SSOP (same) | 20-SSOP (same) | 20-SOIC | 20-UQFN |
| Core / Architecture | PIC16 8-bit RISC, 32MHz | PIC16 8-bit RISC, 32MHz (same) | PIC16 8-bit RISC, 32MHz (same) | PIC16 8-bit RISC, 32MHz (same) | PIC16 8-bit RISC, 32MHz (same) | PIC16 8-bit RISC, 32MHz (same) |
| Operating Voltage Range | 1.8V to 3.6V | 1.8V to 3.6V (same) | 2.3V to 5.5V (F-variant) | 1.8V to 3.6V (same) | 1.8V to 3.6V (same) | 1.8V to 3.6V (same) |
| Flash / RAM / EEPROM | 7KB / 512B / 256B | 7KB / 512B / 256B (same) | 7KB / 512B / 256B (same) | 7KB / 512B / 256B (same) | 7KB / 512B / 256B (same) | 7KB / 512B / 256B (same) |
| Temperature Grade | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +125C (Extended) | -40C to +85C | -40C to +85C |
| Packaging Format | Tape & Reel (T) | Tube | Tape & Reel | Tube or T&R | Tape & Reel (SOIC) | UQFN |
主要差異化特點
- Lowest voltage operation in PIC16F18344 family (對比PIC16F18344T-I/SS)
- Tape-and-reel packaging for automated SMT assembly (對比PIC16LF18344-I/SS (tube))
- Peripheral Pin Select (PPS) flexibility (對比PIC16LF1829-I/SS)
- Industrial-grade operating temperature range (對比PIC16LF18344-E/SS)
設計說明
The PIC16LF18344T-I/SS operates from 1.8V to 3.6V and requires a 100nF decoupling capacitor placed within 3mm of each VDD pin (pin 1 and pin 20 share VDD). For battery-powered designs, add a 10uF bulk capacitor near the supply input to handle load transients during RF transmissions or sensor activation. The LF grade's 1.8V lower bound enables direct connection to single-cell LiSOCl2 and 2xAAA alkaline batteries without boost conversion, simplifying BOM and improving efficiency.
The 20-SSOP package requires careful PCB land-pattern design per IPC-7351 SSOP standards (0.65mm pitch). Maintain 0.5mm trace-to-pad clearance for proper solder joint formation. Place a ground plane on the layer beneath the SSOP to reduce EMI susceptibility and provide a low-impedance return path for high-frequency signals. If using ADC channels, isolate analog VDD/VSS routing from digital switching signals to minimize conversion noise.
Peripheral Pin Select (PPS) allows remapping of digital peripherals (USART, SPI, I2C, CCP, CWG, CLC) to most I/O pins, but configuration is implemented in firmware and should be verified at the start of main() code. Avoid simultaneously assigning two peripherals to the same pin or unlock PPS before reprogramming, otherwise peripherals will silently fail. For noise-sensitive analog pins (RA0-RA2, RA4), route traces away from PWM and high-frequency switching signals and add a small RC filter at the ADC input if needed.
Common pitfalls include: (1) omitting the MCLR pull-up resistor, which prevents the device from starting; (2) failing to disable the WDT in low-power designs, which causes excessive sleep current; (3) over-driving I/O pins above VDD or below VSS, which can latch up the device; (4) using F-grade (5V) firmware on LF-grade silicon, which can stress I/O at higher voltages; (5) leaving unused I/O pins floating, which can cause excessive supply current; configure them as outputs driving low, or enable internal weak pull-ups.
合規資訊
RoHS compliant per Microchip product page. Not AEC-Q100 qualified; choose PIC16LF18344-E/SS or AEC-Q100 equivalents for automotive. Halogen-free status not confirmed in available data.
