PIC16LF18344-I/SO - 8-bit XLP MCU 7KB Flash 32MHz | Microchip
MPN: PIC16LF18344-I/SO ✓ Hoạt độngPIC16LF18344-I/SO Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program Flash, data RAM, EEPROM, timers, communication peripherals, and I/O onto one silicon die. PIC microcontrollers follow the RISC Harvard architecture with a 14-bit instruction word, placing them in the broader taxonomy of microcontrollers -> 8-bit MCUs -> PIC family -> 16F subfamily -> embedded controllers. The 'LF' prefix denotes the wide-voltage low-power variant optimized for battery applications, while 'F' (no L) denotes the standard 1.8V-5.5V variant.
Key features include 12-bit ADC with computation, 5-bit DAC, two comparators, zero-cross detection, and a math accelerator (hardware multiply/divide). The PPS module allows remapping of digital peripherals to multiple I/O pins, enabling single PCB layouts to support different peripheral configurations. The XLP technology delivers typical sleep currents below 50 nA with RTCC and watchdog enabled, suiting battery-powered sensor nodes.
Typical applications include IoT sensor nodes, battery-powered remote controls, low-power wireless HMI panels, LED lighting strips with autonomous CLC/PWM mixing, and household appliance user panels. The 20-pin SOIC provides easy hand-soldering and breadboard compatibility for prototyping.
When designing with this device, ensure decoupling capacitors are placed within 3 mm of VDD and use PPS to remap peripherals rather than relying on fixed peripheral pins. Programming via ICSP requires dedicated RB6/RA4 pins; do not load them heavily.
Bộ thay thế dễ dàng lắp đặt cho PIC16LF18344-I/SO — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16LF18344-I/SO (cùng hình factor và footprint) — khác nhau ở ADC, Package, Comparators, Operating Temperature, Program Memory (Flash).
PIC16F18344-I/SO
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| Core Architecture | 8-bit PIC16 RISC |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data SRAM | 512 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Khoảng nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Hộp | 20-pin SOIC (300 mil) |
| I/O Pins | 18 (with PPS remap) |
| ADC | 12-bit, with computation |
| DAC | 5-bit |
| Comparators | 2 |
| Core-Independent Peripherals | CLC, CWG, CCP, PWM |
| PPS | Peripheral Pin Select |
| XLP Sleep Current | Typical <50 nA with RTCC |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 1 |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16LF18344-I/SO
| Chân 1 | VDD — Positive supply voltage (1.8V to 3.6V) |
| Chân 2 | RA5 — Digital I/O with PPS remap |
| Chân 3 | RA4 — Digital I/O with PPS remap |
| Chân 4 | RA3 — Digital I/O with PPS remap, MCLR alternative |
| Chân 5 | RC5 — Digital I/O with PPS remap |
| Chân 6 | RC4 — Digital I/O with PPS remap |
| Chân 7 | RC3 — Digital I/O with PPS remap |
| Chân 8 | RC2 — Digital I/O with PPS remap |
| Chân 9 | RC1 — Digital I/O with PPS remap |
| Chân 10 | RC0 — Digital I/O with PPS remap |
| Chân 11 | RA2 — Digital I/O with PPS remap, DAC output |
| Chân 12 | RA1 — Digital I/O with PPS remap, ICSPCLK |
| Chân 13 | RA0 — Digital I/O with PPS remap, ICSPDAT |
| Chân 14 | VSS — Ground reference |
| Chân 15 | RA7 — Digital I/O with PPS remap, oscillator |
| Chân 16 | RA6 — Digital I/O with PPS remap, oscillator |
| Chân 17 | RB5 — Digital I/O with PPS remap |
| Chân 18 | RB4 — Digital I/O with PPS remap |
| Chân 19 | RB7 — Digital I/O with PPS remap |
| Chân 20 | VSS — Ground reference (second VSS pin) |
Ứng dụng tiêu biểu
PIC16LF18344-I/SO phù hợp cho 6 Áp dụngs: Battery-Powered IoT Sensor Node, Wireless Remote Control / HMI Panel, LED Lighting Strip / Architectural Lighting, Industrial Sensor / 4-20 mA Transmitter, Smart Home Appliance Control Board, Automotive Interior Lighting / Accessory Module.
Battery-Powered IoT Sensor Node
The PIC16LF18344-I/SO is well-suited to battery-powered IoT sensor nodes because its XLP technology delivers typical sleep currents below 50 nA with the RTCC and watchdog running, while its 1.8 V minimum supply lets the device run directly from a depleted single-cell Li-ion. The 7 KB Flash accommodates state-machine firmware with periodic ADC sampling, and the 12-bit ADC with computation performs oversampling and averaging in hardware, offloading the CPU. The PIC16LF18344-I/SO integrates two comparators and a 5-bit DAC for analog front-ends in environmental sensor boards. PPS allows remapping of UART/SPI/I2C to different pins, so the same PCB layout supports different sensor modules. Compared to PIC18 alternatives, this part costs roughly half (USD 1.02 at qty-1000) and consumes far less sleep current.
Được đề xuất
Wireless Remote Control / HMI Panel
The PIC16LF18344-I/SO fits wireless remote control and HMI panel applications through its Core Independent Peripherals (CLC) which perform button-debounce, key-matrix scanning, and LED driving without CPU intervention. This frees the CPU for sleep mode between user interactions, dropping average current below 1 uA in typical TV-remote duty cycles. The 18 remappable I/O pins via PPS support 8x8 key matrices, IR LED PWM, status RGB LEDs, and a buzzer. The PIC16LF18344-I/SO runs from two AA cells (2.0-3.2 V) over the full 1.8-3.6 V supply range. Compared to PIC16F baseline parts, the LF variant's lower minimum voltage extends battery life when cells deplete.
Được đề xuất
LED Lighting Strip / Architectural Lighting
The PIC16LF18344-I/SO is ideal for LED lighting strips and architectural lighting controllers because its Complementary Waveform Generator (CWG) produces complementary PWM outputs with programmable dead-band for driving half-bridge LED drivers directly. The 12-bit ADC with computation reads ambient light sensors for closed-loop dimming, while CLC cells implement custom fade curves in hardware. Operating from 1.8 V to 3.6 V, the part runs from a single 3.3 V regulator, simplifying the power tree. The 7 KB Flash stores multiple lighting profiles, sunrise/sunset simulations, and zone configurations for DMX-style fixtures. PPS allows reassigning PWM channels without PCB rework.
Được đề xuất
Industrial Sensor / 4-20 mA Transmitter
The PIC16LF18344-I/SO suits industrial 4-20 mA loop-powered transmitters through its 1.8 V minimum supply (enabling operation from a 4-20 mA loop with shunt regulator) and 12-bit ADC with computation oversampling for 16-bit effective resolution. The two on-chip comparators provide sensor-break detection and over-range alarms without external circuitry. Industrial -40 C to +85 C operating temperature range supports process-control deployments. PPS allows reconfiguring the UART for HART or Modbus communication without board changes. Compared to discrete op-amp-based transmitters, this integrated approach reduces BOM cost and PCB area.
Được đề xuất
Smart Home Appliance Control Board
The PIC16LF18344-I/SO integrates well into smart home appliance control boards (washing machines, dishwashers, coffee machines, air purifiers) thanks to its mix of CCP/PWM for motor/relay control, CLC for safety interlocks, and 12-bit ADC for temperature/pressure sensing. The 7 KB Flash accommodates state-machine firmware for multi-mode appliances, while 512 B SRAM supports user-interface buffers and 256 B EEPROM stores calibration and cycle-count data. The 18 I/O pins drive keypads, LCD segments, buzzers, and triac interfaces. PPS lets designers route peripherals after PCB layout, easing board revisions across product variants.
Được đề xuất
Automotive Interior Lighting / Accessory Module
The PIC16LF18344-I/SO handles automotive interior lighting and accessory modules through its CWG for complementary PWM driving RGB ambient strips, 12-bit ADC reading photodiodes for auto-dimming, and CCP for fan/LED brightness control. While the -I/SO is the industrial -40 C to +85 C grade, the same die is also offered in -E (extended -40 to +125 C) variants for under-hood or harsher cabin environments. The PPS peripheral pin select enables a single PCB layout to serve multiple SKUs with different peripheral mappings. EEPROM stores user preferences and trim values across power cycles. Compared to 5 V PIC16F variants, the LF's 3.6 V maximum aligns with 3.3 V automotive rails.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LF18344-I/SO — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC16F18344-I/SO | PIC16LF18345-I/SO | PIC16LF18324-I/SO |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SOIC (300 mil) | 20-SOIC (300 mil) - same | 20-SOIC (300 mil) - same | 14-SOIC - smaller |
| Supply Voltage | 1.8V to 3.6V | 1.8V to 5.5V | 1.8V to 3.6V | 1.8V to 3.6V |
| Flash Memory | 7 KB (4K x 14) | 7 KB (4K x 14) - same | 14 KB (8K x 14) | 7 KB (4K x 14) - same |
| SRAM | 512 B | 512 B - same | 1 KB | 512 B - same |
| EEPROM | 256 B | 256 B - same | 256 B - same | 256 B - same |
| Maximum Frequency | 32 MHz | 32 MHz - same | 32 MHz - same | 32 MHz - same |
| I/O Pins | 18 (with PPS) | 18 (with PPS) - same | 18 (with PPS) - same | 12-14 (with PPS) |
| ADC | 12-bit with computation | 12-bit with computation - same | 12-bit with computation - same | 12-bit with computation - same |
| Core-Independent Peripherals | CLC, CWG, CCP, PWM | CLC, CWG, CCP, PWM - same | CLC, CWG, CCP, PWM - same | CLC, CWG, CCP, PWM - same |
Bảo phân biệt quan trọng
- Widest supply voltage range with 5V tolerance in same package (vsPIC16F18344-I/SO)
- Double the Flash memory in same 20-SOIC package (vsPIC16LF18345-I/SO)
- Smaller package option with same Flash memory (vsPIC16LF18324-I/SO)
Ghi chú thiết kế
Estimated: at VDD=3.3V, 32 MHz active, the PIC16LF18344-I/SO draws approximately 4-6 mA. In sleep mode with RTCC running at 32 kHz, the typical current is below 50 nA per datasheet document 40001800D. For battery life calculations, use a duty-cycle model: I_avg = (I_active * t_active + I_sleep * t_sleep) / T_period. A typical IoT sensor node waking every 5 seconds for 10 ms achieves sub-uA average current, supporting multi-year battery life from a 2000 mAh Li-ion cell.
Place a 100 nF decoupling capacitor within 3 mm of the VDD pin (pin 1) and a second 100 nF cap within 3 mm of the secondary VSS pin (pin 20). For ADC applications, add a 10 uF bulk capacitor near the analog supply. Keep crystal traces short (under 5 mm) if using an external crystal on RA6/RA7, and surround the crystal body with a grounded guard ring to reduce EMI coupling into sensitive analog inputs.
Do not load the ICSPDAT/ICSPCLK pins (RA0/RA1) with heavy capacitance during in-circuit programming - this prevents successful programming. The PPS module allows remapping digital peripherals, but analog functions are fixed; check the pinout table in section 1 of datasheet document 40001800D before assigning analog signals. The MCLR function on RA3 is disabled by default in many configurations - enable it via the CONFIG register if external reset is needed.
When using PPS to remap I2C or SPI to high-capacitance traces, ensure the trace length is under 15 cm and use 4.7 kohm pull-ups on SDA/SCL for 3.3 V operation. For UART communication above 115200 baud, keep trace impedance controlled and avoid routing UART signals near PWM outputs to prevent coupling. The CLC outputs can toggle at up to FOSC/2 - derate trace lengths accordingly.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. Lead-free and halogen-free per datasheet document 40001800D. Not AEC-Q100 qualified - for automotive applications use AEC-Q100 qualified variants if available in the same family.
