PIC16F18445-I/GZ - 8-Bit XLP MCU 14KB Flash 20-UQFN | Microchip
MPN： PIC16F18445-I/GZ ✓ 啟用中PIC16F18445-I/GZ 概覽
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), working memory (RAM), and a set of on-chip peripherals such as timers, communication interfaces, ADCs, and GPIO. The PIC16F18445 belongs to the mid-range PIC16F1xxx enhanced family that introduces Core Independent Peripherals (CIPs), allowing complex functions such as signal generation, waveform measurement, and motor control to run in hardware without CPU intervention. Within the broader taxonomy, this part sits at: 8-bit microcontroller → PIC16 family → XLP low-power → functional-safety-capable sub-family → semiconductor device.
Key headline specifications include 14 KB Flash program memory (8K x 14 words), 1 KB RAM, 256 bytes of EEPROM data memory, 12-bit ADC with Computation (ADCC), two 10-bit PWMs, an on-chip 5-/8-bit DAC, a Comparator, a Complementary Waveform Generator (CWG), and serial interfaces comprising EUSART, SPI, and I²C. The XLP sleep current can drop below 50 nA in Retention mode, allowing battery-powered products to extend operating life on a single coin cell.
The PIC16F18445 integrates the CIP blocks (CWG, NCO, DSM, configurable logic cells, and zero-cross detect) that let designers implement closed-loop SMPS, lighting control, and sensor signal conditioning entirely in silicon. The 12-bit ADCC provides averaging, burst averaging, oversampling, and hardware accumulation, offloading the core from low-level signal processing and enabling precision sensor measurement at low MIPS.
Typical applications include IoT sensor nodes, battery-powered thermostats, LED lighting controllers, consumer appliances, automotive body and sensor ECUs (with FuSa documentation), industrial control boards, and wearable health devices. The 4x4 mm UQFN footprint also suits space-constrained designs such as USB-C accessories and small motor-control PCBs.
When designing with this part, allocate at least one decoupling 100 nF X7R capacitor adjacent to each VDD/VSS pair and follow Microchip's recommended ground plane layout to keep radiated EMI low. Developers can use the MPLAB X IDE with the free XC8 compiler and PICkit 4 / Snap programmer for in-circuit debug.
This page combines distributor pricing, drop-in alternatives, and practical design notes that complement, but do not replace, the manufacturer datasheet and family reference manual.
直接替換替代品，適用於 PIC16F18445-I/GZ — 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： PIC16F18445-I/GZ （相同外形與佔位） — 差異在於 ADC, Package, DAC, Program Memory (Flash), Core Architecture.
PIC16F18444-I/GZ
✅ 直接替換聯絡詢價
查看資料表 →PIC16F18345-I/GZ
✅ 直接替換聯絡詢價
查看資料表 →PIC16F18445-I/GZ-MEAS
✅ 直接替換📋 參考替代品（不在目錄中）
PIC16F15345-I/GZ
✅ 直接替換聯絡詢價
查看資料表 →PIC16F18446-I/GZ
✅ 直接替換聯絡詢價
查看資料表 →PIC16F18445-E/GZ
✅ 直接替換聯絡詢價
查看資料表 →PIC16F18445-I/GZ 最大額定值與電氣特性
| Core Architecture | PIC16 8-bit enhanced mid-range |
| CPU Speed | 32 MHz (8 MIPS) |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data RAM | 1 KB |
| EEPROM | 256 bytes |
| Operating Voltage Range | 1.8 V to 5.5 V |
| ADC | 12-bit ADCC with computation, oversampling, averaging |
| DAC | 5-bit / 8-bit selectable on-chip DAC |
| PWM Channels | 2 x 10-bit PWM |
| Comparators | On-chip analog comparator |
| CWG | Complementary Waveform Generator |
| Communication Interfaces | EUSART, SPI, I²C |
| XLP Sleep Current | < 50 nA typical (Retention mode) |
| 封裝 | 20-pin UQFN (GZ) 4x4 mm |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40 °C to +85 °C (industrial, "I" grade) |
| MSL 等級 | MSL1 (per JEDEC J-STD-020, package dependent) |
| RoHS 狀態 | Compliant |
| Functional Safety (FuSa) | Documentation package available for IEC 60730 Class B |
PIC16F18445-I/GZ 腳位配置
| 腳位 1 | RA5 — Bidirectional I/O, analog input |
| 腳位 2 | RA4 — Bidirectional I/O, analog input |
| 腳位 3 | RA3 — Bidirectional I/O, analog input |
| 腳位 4 | RA2 — Bidirectional I/O, analog input |
| 腳位 5 | RA1 — Bidirectional I/O, analog input |
| 腳位 6 | RA0 — Bidirectional I/O, analog input |
| 腳位 7 | VSS — Ground reference |
| 腳位 8 | RA7 — Bidirectional I/O, analog input |
| 腳位 9 | RA6 — Bidirectional I/O, oscillator output |
| 腳位 10 | RC0 — Bidirectional I/O |
| 腳位 11 | RC1 — Bidirectional I/O |
| 腳位 12 | RC2 — Bidirectional I/O |
| 腳位 13 | RC3 — Bidirectional I/O |
| 腳位 14 | RC4 — Bidirectional I/O |
| 腳位 15 | RC5 — Bidirectional I/O |
| 腳位 16 | RC6 — Bidirectional I/O |
| 腳位 17 | RC7 — Bidirectional I/O |
| 腳位 18 | VDD — Positive supply (1.8 V to 5.5 V) |
| 腳位 19 | VSS — Ground reference |
| 腳位 20 | MCLR — Master clear / reset input |
典型應用
PIC16F18445-I/GZ 適用於 6 應用s: IoT Battery Sensor Node, Battery-Powered Thermostat, LED Lighting Controller, Consumer Appliance Control Board, Automotive Body Sensor ECU, Wearable Health Monitor.
IoT Battery Sensor Node
The PIC16F18445-I/GZ is well-suited for IoT battery sensor nodes because its XLP Retention mode sleep current drops below 50 nA while still allowing the 12-bit ADCC and EUSART to wake on a sensor event. The 14 KB Flash holds a LoRaWAN or BLE-beacon stack, and the UQFN-20 footprint fits 4x4 mm sensor modules. Pairing the part with a CR2032 coin cell yields multi-year battery life when the duty cycle stays below 0.1%.
推薦
Battery-Powered Thermostat
The PIC16F18445-I/GZ drives a battery-powered thermostat by combining the on-chip 12-bit ADCC for thermistor and humidity sensing with the 5/8-bit DAC for the LCD bias voltage. The CWG and 10-bit PWM directly control a triac-driven heater load, while the EUSART links to a BLE module for remote control. Wide 1.8-5.5 V VDD operation lets the thermostat run from two AA cells for years.
推薦
LED Lighting Controller
The PIC16F18445-I/GZ functions as a smart LED lighting controller by exploiting the CWG, 10-bit PWM, and configurable logic cells to produce flicker-free dimming without CPU overhead. The 12-bit ADCC monitors external current-sense and ambient-light photodiode inputs for closed-loop brightness control. I²C interfaces to a downstream LED driver IC, and XLP low-power mode keeps standby below 50 nA when the lights are off.
推薦
Consumer Appliance Control Board
The PIC16F18445-I/GZ is ideal for IEC 60730 Class B consumer appliances because Microchip supplies Functional Safety (FuSa) collateral and firmware self-test libraries. The 12-bit ADCC monitors motor current and supply rails, while the CWG and EUSART drive a TRIAC and HMI display. Industrial -40 °C to +85 °C operation covers washer, dryer, and dishwasher environments without extra temperature screening.
推薦
Automotive Body Sensor ECU
The PIC16F18445-I/GZ (industrial grade) or PIC16F18445-E/GZ (extended automotive grade) targets body-electronics sensor ECUs such as tire-pressure monitors, seat-occupancy detectors, and ambient-light modules. The 12-bit ADCC and on-chip comparator process sensor signals, while the EUSART or SPI bridges to the vehicle LIN/CAN network. The 20-UQFN 4x4 mm package fits inside tight connector modules next to the sensor element.
推薦
Wearable Health Monitor
The PIC16F18445-I/GZ powers wearable health monitors by combining XLP sleep modes below 50 nA, 12-bit ADCC for heart-rate and SpO2 photodiode readings, and a 5/8-bit DAC for low-bias LCD or LED pulse indicators. The compact UQFN-20 4x4 mm footprint suits thin wristbands, and the wide 1.8-5.5 V VDD range works with small Li-ion or coin-cell batteries. SPI or I²C interfaces attach to a Bluetooth Low Energy companion module for phone sync.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16F18445-I/GZ — 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 | PIC16F18444-I/GZ | PIC16F18345-I/GZ | PIC16F15345-I/GZ | PIC16F18446-I/GZ | PIC16F18445-E/GZ |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-UQFN (4x4 mm) | 20-UQFN (4x4 mm) - same | 20-UQFN (4x4 mm) - same | 20-UQFN (4x4 mm) - same | 20-UQFN (4x4 mm) - same | 20-UQFN (4x4 mm) - same |
| Flash | 14 KB | 7 KB | 14 KB | 14 KB | 28 KB | 14 KB |
| RAM | 1 KB | 512 B | 1 KB | 1 KB | 2 KB | 1 KB |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| 12-bit ADCC | Yes | Yes | Yes | No (10-bit ADC) | Yes | Yes |
| Functional Safety (FuSa) | Yes | Yes | No | No | Yes | Yes |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +125 °C |
主要差異化特點
- Larger Flash than same-footprint PIC16F18444-I/GZ (對比PIC16F18444-I/GZ)
- Functional Safety collateral for IEC 60730 Class B (對比PIC16F18345-I/GZ)
- 12-bit ADCC with computation over legacy 10-bit ADC (對比PIC16F15345-I/GZ)
設計說明
Place a 100 nF X7R decoupling capacitor within 3 mm of every VDD/VSS pair and add a bulk 10 µF tantalum or ceramic on the main 3.3 V rail to support inrush during Flash erase/program. Use separate analog and digital VDD traces to keep ADCC noise below 1 LSB, and tie the AVSS pin directly to the common ground plane rather than daisy-chaining it to the digital VSS pin.
The 20-UQFN package exposes the central die paddle to VSS; ensure the PCB land pattern has a continuous thermal via array (8-12 vias, 0.3 mm drill) under the pad to sink heat and reduce ground impedance. Route high-speed traces (SPI, EUSART) on the top layer over an unbroken reference plane and avoid routing signals under the UQFN paddle to minimize coupling.
Do not exceed VDD of 5.5 V or drop below 1.8 V; both conditions can corrupt Flash during a self-write. Always issue BOR (Brown-Out Reset) configuration before enabling peripherals, and keep MCLR pulled high through a 10 kΩ resistor with a 100 nF bypass when not used. Verify programming voltage timing against the datasheet's VDD ramp specification before in-circuit serial programming (ICSP).
合規資訊
RoHS / REACH / lead-free / halogen-free compliant per Microchip product page. -I grade is industrial (-40 °C to +85 °C). For IEC 60730 Class B use the Functional Safety collateral; AEC-Q100 qualified part is PIC16F18445-E/GZ (extended grade).
