PIC16LF18445-I/GZ - 14KB Flash, 32MHz 8-bit MCU | Microchip
MPN: PIC16LF18445-I/GZ ✓ Hoạt độngPIC16LF18445-I/GZ Tóm tắt
An 8-bit microcontroller (MCU) is a Von Neumann or Harvard-architecture processor with an 8-bit data path, optimized for deterministic real-time control, low power consumption, and small code footprint. The PIC16F184xx family sits in the hierarchy microcontroller -> embedded MCU -> 8-bit MCU -> PIC16 family -> XLP (eXtreme Low Power) family -> microcontrollers. XLP technology targets battery-powered and energy-harvesting applications where nanoWatt sleep currents and active-mode efficiency dominate design trade-offs versus 32-bit ARM Cortex-M alternatives.
Key features that differentiate this part include 14 KB self-programmable Flash (8K x 14 words), 1 KB SRAM, 256 B EEPROM, hardware CWG for half-bridge/full-bridge/H-bridge control, the ADCC averaging/filtering accelerator, an angular timer, zero-cross detect, and mathematical accelerator. PPS maps digital peripherals to any I/O pin, and the ICSP/ICD interface supports in-circuit debug without removing the device from the board. The wide 1.8 V–3.6 V operating range covers 2-cell alkaline, single-cell Li-ion, and 3.3 V regulated rails.
The PIC16LF18445 uses Microchip's enhanced mid-range core with a 14-bit instruction word and a 32 MHz internal oscillator, eliminating an external crystal in most designs. Brown-out Reset (BOR), Power-on Reset (POR), and a Windowed Watchdog Timer (WWDT) improve robustness in noisy industrial environments. The device is supported by MPLAB X IDE, XC8 compilers, and the MPLAB Code Configurator (MCC) plug-in for rapid peripheral setup.
Typical applications include low-power IoT sensor nodes, battery-powered medical wearables, touch/user-interface front panels, LED lighting drivers using CWG, motor control with BEMF sensing, and USB-less USB-to-UART bridges using EUSART. The combination of nanoWatt XLP sleep, PPS, and the integrated 12-bit ADCC enables single-chip sensor hubs with no external ADC.
When designing with this MCU, use a 0.1 µF decoupling capacitor within 5 mm of VDD, and bond the exposed pad (EP) to a grounded copper pour of at least 25 mm² for thermal and electrical reference. Do not float the MCLR pin in F-series applications; tie it to VDD through a 10 kΩ resistor to avoid spurious resets. Program the CONFIG words in MPLAB X to set the oscillator, BOR threshold, and code protection before first use.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC16LF18445-I/GZ — 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 PIC16LF18445-I/GZ (cùng hình factor và footprint) — khác nhau ở DAC, ADC, Comparators, Package, Program Memory (Flash).
PIC16LF18444-I/GZ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF18444T-I/GZ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18445-I/GZ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF18346-I/GZ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LF18345-I/GZ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LF18445-I/GZ Tỷ lệ tối đa & tính chất điện
| Family | PIC16 (XLP™ 16F) |
| Core | 8-bit PIC enhanced mid-range |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| SRAM | 1 KB |
| EEPROM | 256 B |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage (LF) | 1.8 V to 3.6 V |
| ADC | 12-bit ADCC with computation |
| DAC | 5-bit DAC |
| Comparators | Yes |
| PWM Modules | 2 |
| CWG (Complementary Waveform Generator) | Yes |
| Communication | EUSART, SPI, I²C |
| Peripheral Pin Select (PPS) | Yes |
| Hộp | 20-pin UQFN (4x4 mm) with exposed pad |
| Kiểu lắp đặt | Surface Mount |
| Temperature Range | -40 °C to +85 °C (Industrial) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16LF18445-I/GZ
| Chân 1 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
| Chân 2 | RA5 — I/O port A bit 5 (PPS-mappable) |
| Chân 3 | RA4 — I/O port A bit 4 (PPS-mappable) |
| Chân 4 | RA3 — I/O port A bit 3 (PPS-mappable) |
| Chân 5 | RA2 — I/O port A bit 2 (PPS-mappable) |
| Chân 6 | RA1 — I/O port A bit 1 (PPS-mappable) |
| Chân 7 | RA0 — I/O port A bit 0 (PPS-mappable) |
| Chân 8 | VSS — Ground reference |
| Chân 9 | RC0 — I/O port C bit 0 (PPS-mappable) |
| Chân 10 | RC1 — I/O port C bit 1 (PPS-mappable) |
| Chân 11 | RC2 — I/O port C bit 2 (PPS-mappable) |
| Chân 12 | RC3 — I/O port C bit 3 (PPS-mappable) |
| Chân 13 | RC4 — I/O port C bit 4 (PPS-mappable) |
| Chân 14 | RC5 — I/O port C bit 5 (PPS-mappable) |
| Chân 15 | RC6 — I/O port C bit 6 (PPS-mappable) |
| Chân 16 | RC7 — I/O port C bit 7 (PPS-mappable) |
| Chân 17 | RB7 — I/O port B bit 7 (PPS-mappable) |
| Chân 18 | RB6 — I/O port B bit 6 (PPS-mappable, ICSP clock) |
| Chân 19 | MCLR — Master Clear reset / ICSP data (active-low) |
| Chân 20 | VSS — Ground reference (secondary bond) |
| Chân EP | EP — Exposed thermal pad - tie to ground for thermal relief |
Ứng dụng tiêu biểu
PIC16LF18445-I/GZ phù hợp cho 6 Áp dụngs: Battery-Powered IoT Sensor Node, Wearable Medical/Health Monitor, LED Lighting Driver with CWG, Touch / User-Interface Front Panel, BLDC / Small Motor Controller, Industrial Sensor Hub with UART Bridge.
Battery-Powered IoT Sensor Node
The PIC16LF18445-I/GZ is well suited for battery-powered IoT sensor nodes because of its 1.8–3.6 V supply range and XLP nanoWatt sleep technology. Per Microchip's PIC16(L)F184xx datasheet, the device delivers 14 KB Flash and 1 KB SRAM, enough for a sensor driver plus a small protocol stack such as Modbus RTU or a vendor-proprietary RF command layer, while the integrated 12-bit ADCC with hardware averaging reduces firmware overhead. Placed between a coin-cell or 2x AA battery and the sensor front-end, it achieves months-to-years runtime by sleeping between wake-ups on timer or ADCC threshold interrupts.
Được đề xuất
Wearable Medical/Health Monitor
The PIC16LF18445-I/GZ fits wearable medical and health monitors where small PCB area, low active current, and an integrated analog front-end are essential. Per the Microchip PIC16(L)F184xx datasheet, the 12-bit ADCC plus 5-bit DAC and the on-chip comparator enable direct connection to PPG photodiodes, thermistors, and bio-impedance electrodes without an external ADC. The 20-pin UQFN (4x4 mm) footprint leaves room for a CR2032 battery and a small BLE module, while XLP deep-sleep currents keep idle draw below 1 µA for multi-day wear time between charges.
Được đề xuất
LED Lighting Driver with CWG
The PIC16LF18445-I/GZ drives Class-2 LED lighting fixtures using its integrated Complementary Waveform Generator (CWG) plus two PWM channels. Per Microchip's PIC16(L)F184xx datasheet, the CWG module supports half-bridge, full-bridge, and H-bridge topologies with programmable dead-band and auto-shutdown, eliminating an external gate-driver IC in many designs. Combined with PPS to route PWM to any pin and 12-bit ADCC for closed-loop current sensing, the MCU provides dimming, color-mixing, and thermal foldback on a single 4x4 mm die footprint.
Được đề xuất
Touch / User-Interface Front Panel
The PIC16LF18445-I/GZ serves as a capacitive-touch or matrix-keypad front-panel controller thanks to its on-chip comparator, 12-bit ADCC, and PPS flexibility. According to the Microchip PIC16(L)F184xx datasheet, the mTouch® capacitive-touch library runs directly on the PIC16 core with no external touch IC, and EUSART/SPI/I²C let the part report events to a host MCU over a single wire. The 20-pin UQFN (4x4 mm) package keeps the front-panel PCB compact while industrial temperature range (-40 °C to +85 °C) supports appliance and industrial control panels.
Được đề xuất
BLDC / Small Motor Controller
The PIC16LF18445-I/GZ controls small BLDC, brushed-DC, or stepper motors using its CWG, two PWM modules, comparator, and 12-bit ADCC. Per Microchip's PIC16(L)F184xx datasheet, the CWG generates complementary PWM with hardware dead-band control, while the angular timer simplifies back-EMF zero-cross detection on sensorless BLDC designs. The 32 MHz core provides 8 MIPS to execute field-oriented control or trapezoidal commutation at high PWM frequencies, all within a 4x4 mm UQFN footprint suitable for space-constrained drone, appliance, or robotic actuator designs.
Được đề xuất
Industrial Sensor Hub with UART Bridge
The PIC16LF18445-I/GZ functions as an industrial sensor hub, aggregating analog and digital inputs and bridging to a host via EUSART, SPI, or I²C. According to the Microchip PIC16(L)F184xx datasheet, the 12-bit ADCC with computation engine handles hardware-averaged ADC scans, while PPS allows the same firmware to map the bridge peripheral to different pins for layout flexibility. Operating from a 3.3 V regulated rail at -40 °C to +85 °C, the part tolerates factory-floor temperature swings and supports factory calibration via the ICSP/ICD interface.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LF18445-I/GZ — 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 | PIC16LF18444-I/GZ | PIC16F18445-I/GZ | PIC16LF18346-I/GZ | PIC16LF18345-I/GZ |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-pin UQFN (4x4 mm) | 20-pin UQFN (4x4 mm) - same | 20-pin UQFN (4x4 mm) - same | 20-pin UQFN (4x4 mm) - same | 20-pin UQFN (4x4 mm) - same |
| Flash / SRAM | 14 KB / 1 KB | 7 KB / 1 KB (-50% Flash) | 14 KB / 1 KB (same) | 14 KB / 1 KB (same) | 14 KB / 1 KB (same) |
| Maximum CPU Speed | 32 MHz | 32 MHz (same) | 32 MHz (same) | 16 MHz (-50%) | 32 MHz (same) |
| Operating Voltage | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF, same) | 2.3 V to 5.5 V (F, wider upper) | 1.8 V to 3.6 V (LF, same) | 1.8 V to 3.6 V (LF, same) |
| CWG (Bridge Drive) | Yes | No | Yes (same) | No | No |
| PWM Channels | 2 + CWG | 2 (no CWG) | 2 + CWG (same) | More PWM channels | 2 (no CWG) |
| ADCC (12-bit ADC w/computation) | Yes | Yes | Yes | Yes | Yes (earlier-gen without computation engine) |
Bảo phân biệt quan trọng
- CWG + 12-bit ADCC computation in 4x4 mm UQFN (vsPIC16LF18345-I/GZ)
- Wider peripheral set than PIC16LF18444 sibling (vsPIC16LF18444-I/GZ)
- 1.8 V minimum supply vs 2.3 V on PIC16F18445 (vsPIC16F18445-I/GZ)
Ghi chú thiết kế
Estimated: at fOSC = 32 MHz and VDD = 3.3 V, active current is approximately 4 mA and XLP sleep current is below 1 µA. Decouple VDD (pin 1) with a 0.1 µF X7R ceramic capacitor placed within 5 mm of the IC pin; add a 10 µF bulk capacitor near the supply entry point. For battery-powered designs, route the battery through a series ferrite bead to suppress inrush noise into the analog reference.
The 20-pin UQFN (4x4 mm) package exposes a thermal pad (EP) on the bottom side that MUST be soldered to a grounded copper pour of at least 25 mm² for thermal relief and electrical reference. Per the Microchip PIC16(L)F184xx datasheet, floating the EP degrades thermal performance and may cause ESD susceptibility. The UQFN land pattern uses NSMD pads with a 0.2 mm solder mask dam; follow IPC-7351 nominal land recommendations.
Do NOT leave the MCLR pin floating - tie MCLR (pin 19) to VDD through a 10 kΩ pull-up resistor to prevent spurious resets from injected noise. Per the Microchip PIC16(L)F184xx datasheet, MCLR is shared with the ICSP data line; ensure the in-circuit programmer can drive MCLR low without contention. Also configure the CONFIG words (FOSC, BOR, WDTE, etc.) in MPLAB X before first programming - default CONFIG may select an oscillator mode incompatible with your hardware.
Keep the analog AVSS/AVDD pair separated from noisy digital traces; place the ADCC reference capacitor within 5 mm of the reference pin. Per the Microchip PIC16(L)F184xx datasheet, the on-chip 12-bit ADCC achieves best noise performance when the input traces are guarded by a ground trace and the reference decoupling capacitor is a 0.1 µF COG/NP0 ceramic. Use Peripheral Pin Select (PPS) to remap CWG outputs adjacent to the gate-driver FETs to minimize switching-loop inductance.
Thông tin tuân thủ
RoHS and lead-free status inferred from Microchip product page; AEC-Q100 not qualified (industrial grade only, not automotive).
