PIC16F18445T-I/GZ - 8-bit 32MHz 14KB FLASH MCU 20-UQFN | Microchip
MPN: PIC16F18445T-I/GZ ✓ Hoạt độngPIC16F18445T-I/GZ Tóm tắt
An 8-bit microcontroller is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and a configurable set of peripherals around an 8-bit data path. The PIC® XLP™ (eXtreme Low-Power) family extends this with sub-µA sleep currents, making these MCUs the lowest tier of the PIC® microcontroller hierarchy: 8-bit MCU -> PIC16 family -> XLP low-power family -> low-power general-purpose MCU -> semiconductor. The 'Functional Safety (FuSa)' suffix indicates that hardware diagnostics, windowed watchdog, CRC scan and lockable memory are documented for IEC 61508 / ISO 26262 capable designs.
Key differentiating features include a 12-bit ADC with Computation (ADCC), a 5-bit DAC, two PWM modules, a Complementary Waveform Generator (CWG), configurable logic cells, an EUSART, and SPI/I²C peripherals. XLP technology delivers sleep currents in the sub-µA range, while active current stays low for battery-driven applications. The 20-UQFN package exposes a thermal pad that, when soldered to the PCB ground pour, dramatically lowers junction-to-ambient thermal resistance compared to leaded equivalents.
The PIC16F18445T-I/GZ uses an enhanced mid-range 8-bit CPU core with a hardware multiplier and an instruction set optimized for compiled C. Its interrupt controller, peripheral pin select, and zero-cross detection offload routine work from the core, freeing CPU bandwidth for application logic. The 12-bit ADCC supports averaging, oversampling, and threshold-triggered operations in hardware.
Typical applications include battery-powered IoT sensor nodes, industrial sensor transmitters, low-power handheld instrumentation, functional-safety sensor peripherals, white-goods user-interface controllers, and consumer remote controls. Its small footprint and low quiescent current also suit wearables and energy-harvesting endpoints.
Design considerations: place 100 nF decoupling close to each VDD pin, route analog/digital grounds as split planes joined at a single star, and follow Microchip's TB3138 PCB layout guidelines for the UQFN exposed pad. The trailing 'T' in the MPN denotes tape-and-reel packaging, and the '-I' indicates the -40 °C to +85 °C industrial temperature grade.
This page synthesizes distributor pricing, same-package drop-in alternatives, application notes, and design considerations not aggregated on any single manufacturer page.
Bộ thay thế dễ dàng lắp đặt cho PIC16F18445T-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 PIC16F18445T-I/GZ (cùng hình factor và footprint) — khác nhau ở ADC, Package, Operating Temperature, DAC, PWM Channels.
PIC16F18445-I/GZ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18445T-I/SSVAO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F18345T-I/GZ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18346T-I/GZVAO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18446T-I/GZ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F18426T-I/ST
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1829-I/GZ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18445T-I/GZ Tỷ lệ tối đa & tính chất điện
| Family | PIC® XLP™ 16F, Functional Safety (FuSa) |
| Core | 8-bit PIC16 enhanced mid-range |
| Maximum CPU Frequency | 32 MHz |
| Program Memory (FLASH) | 14 KB (8K × 14 words) |
| Data RAM | 1 KB |
| Hộp | 20-UQFN (GZ) 4 × 4 mm |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40 °C to +85 °C (Industrial grade) |
| ADC | 12-bit ADC with Computation (ADCC) |
| DAC | 5-bit DAC |
| PWM Channels | 2 (10-bit PWM) |
| Communication Peripherals | EUSART, SPI, I²C |
| Special Features | CWG, Configurable Logic Cells, CRC/Scan, Windowed WDT, XLP |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16F18445T-I/GZ
| Chân 1 | RA5 — General purpose I/O / ADC |
| Chân 2 | RA4 — General purpose I/O / ADC |
| Chân 3 | RA3 — General purpose I/O / MCLR |
| Chân 4 | RC5 — General purpose I/O / PWM |
| Chân 5 | RC4 — General purpose I/O / PWM |
| Chân 6 | RC3 — General purpose I/O / SCL |
| Chân 7 | RC2 — General purpose I/O / SDA |
| Chân 8 | RC1 — General purpose I/O / EUSART |
| Chân 9 | RC0 — General purpose I/O / EUSART |
| Chân 10 | VSS — Ground |
| Chân 11 | RA2 — General purpose I/O / ADC |
| Chân 12 | RA1 — General purpose I/O / ADC / DAC |
| Chân 13 | RA0 — General purpose I/O / ADC / DAC |
| Chân 14 | VDD — Positive supply |
| Chân 15 | RB7 — General purpose I/O / ICSP |
| Chân 16 | RB6 — General purpose I/O / ICSP |
| Chân 17 | RB5 — General purpose I/O |
| Chân 18 | RB4 — General purpose I/O |
| Chân 19 | RC7 — General purpose I/O |
| Chân 20 | RC6 — General purpose I/O |
Ứng dụng tiêu biểu
PIC16F18445T-I/GZ phù hợp cho 6 Áp dụngs: Battery-Powered IoT Sensor Nodes, Functional-Safety Sensor Peripherals, Low-Power Handheld Instrumentation, White Goods & Appliance UI Controllers, Consumer Remote Controls, Energy-Harvesting Wireless Switches.
Battery-Powered IoT Sensor Nodes
The PIC16F18445T-I/GZ is engineered for battery-powered IoT sensor nodes that must operate for years on a single coin cell. The XLP (eXtreme Low-Power) technology delivers sub-µA sleep current with multiple retention modes, while the 12-bit ADCC with Computation can autonomously scan temperature, humidity or gas sensors and wake the core only on threshold crossings. At a 1 sample/minute wake cadence and EUSART-based LoRa sub-GHz uplink, a CR2032-powered node typically lasts 5-10 years. The 20-UQFN 4x4 mm footprint and 1 KB RAM are sufficient for sensor fusion and TLS-lite security stacks.
Được đề xuất
Functional-Safety Sensor Peripherals
For functional-safety designs targeting IEC 61508 SIL-2/SIL-3 capable peripherals, the PIC16F18445T-I/GZ provides dedicated hardware: a windowed watchdog timer that detects out-of-spec firmware, lockable memory regions for bootloader isolation, and a CRC/Scan engine that verifies FLASH integrity at boot and on demand. The FuSa sub-family datasheet documents the safety manual and failure-mode metrics. This makes the part well suited to industrial sensor peripherals, smoke/heat detectors and machine-safety encoders where a self-checking microcontroller reduces external supervision cost.
Được đề xuất
Low-Power Handheld Instrumentation
Handheld DMMs, clamp meters and field-test instruments benefit from the PIC16F18445T-I/GZ combination of 12-bit ADCC, 5-bit DAC, 32 MHz CPU, and low active current. The ADCC supports hardware averaging and oversampling for 16-bit effective resolution, enabling precision RTD and thermocouple front-ends without external analog ICs. The CWG generates complementary PWMs for switching power supplies and motor drivers, while the configurable logic cells implement hardware debouncing and pulse conditioning. The 20-UQFN package keeps the BOM small enough for sub-100 g handheld form factors.
Được đề xuất
White Goods & Appliance UI Controllers
Washing machines, dishwashers, ovens and induction cooktops use the PIC16F18445T-I/GZ as the user-interface and motor-control co-processor. The two 10-bit PWM outputs and Complementary Waveform Generator drive triac-controlled loads and small BLDC fans, while the 5-bit DAC generates bias voltages for capacitive touch sliders. EUSART/SPI/I²C links the UI controller to a main appliance MCU, and XLP sleep modes keep idle power below energy-star limits. Industrial -40 to +85 °C operation covers unheated garage and basement installations.
Được đề xuất
Consumer Remote Controls
IR/RF remote controls for TVs, set-top boxes and smart-home hubs are an ideal fit for the PIC16F18445T-I/GZ. Its sub-µA sleep current lets a coin-cell-powered remote sit on a coffee table for 5+ years; a button press wakes the core in <5 µs, runs the IR protocol via the CWG, and re-enters sleep. The 14 KB FLASH holds vendor-specific IR code libraries, while 1 KB RAM suffices for protocol stacks. The 20-UQFN 4x4 mm package fits behind AAA battery compartments.
Được đề xuất
Energy-Harvesting Wireless Switches
Self-powered wireless light switches, door/window sensors and industrial pushbuttons rely on energy harvesting from a piezo element or kinetic generator. The PIC16F18445T-I/GZ is well matched to these applications because it can cold-start from <1 V on the internal LDO and its XLP sleep modes consume <50 nA. The configurable logic cells implement hardware pulse counting for kinetic inputs without waking the core. Combined with a sub-GHz or BLE companion radio, a single press generates enough energy to transmit and acknowledge before re-entering deep sleep.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F18445T-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 | PIC16F18445-I/GZ | PIC16F18345T-I/GZ | PIC16F18346T-I/GZVAO | PIC16F18446T-I/GZ | PIC16F1829-I/GZ |
|---|---|---|---|---|---|---|
| Package | 20-UQFN (GZ) 4x4 mm | 20-UQFN (GZ) 4x4 mm - same | 20-UQFN (GZ) 4x4 mm - same | 20-UQFN (GZ) 4x4 mm - same | 20-UQFN (GZ) 4x4 mm - same | 20-UQFN (GZ) 4x4 mm - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | 8-bit PIC16 enhanced mid-range 32 MHz | 8-bit PIC16 enhanced mid-range 32 MHz | 8-bit PIC16 enhanced mid-range 32 MHz | 8-bit PIC16 enhanced mid-range 32 MHz | 8-bit PIC16 enhanced mid-range 32 MHz | 8-bit PIC16 enhanced mid-range 32 MHz |
| FLASH Program Memory | 14 KB (8K x 14) | 14 KB | 14 KB | 28 KB | 28 KB | 14 KB |
| Data RAM | 1 KB | 1 KB | 1 KB | 2 KB | 2 KB | 1 KB |
| ADC | 12-bit ADCC | 12-bit ADCC | 10-bit ADC | 12-bit ADCC | 12-bit ADCC | 10-bit ADC |
| Functional Safety (FuSa) | Yes - windowed WDT, CRC scan, lockable memory | Yes | No | Yes | Yes | No |
| Operating Temperature | -40 to +85 °C (Industrial) | -40 to +85 °C | -40 to +85 °C | -40 to +125 °C (Automotive VAO) | -40 to +85 °C | -40 to +85 °C |
Bảo phân biệt quan trọng
- Functional Safety (FuSa) hardware diagnostics integrated (vsPIC16F18345T-I/GZ)
- 12-bit ADCC with hardware computation (vsPIC16F1829-I/GZ)
- Tape & reel ready with industrial temperature grade (vsPIC16F18445-E/SS (SSOP-20))
Ghi chú thiết kế
Place a 100 nF X7R decoupling capacitor within 3 mm of each VDD pin and a bulk 1-10 µF tantalum or ceramic on the main supply rail. The XLP sleep current of the PIC16F18445T-I/GZ is in the sub-µA range, so any leakage path through a dirty supply or external pull-ups will dominate quiescent power. Use 100 kΩ or larger pull-ups to retain sub-µA budget in sleep.
The 20-UQFN (GZ) package exposes a thermal pad on the underside that MUST be soldered to a PCB ground pour of at least 100 mm². The exposed pad is the primary heat-dissipation path; omitting it raises θJA from ~35 °C/W to >100 °C/W and may force derating at 32 MHz active. Stitch vias on a 0.5 mm grid are recommended per Microchip TB3138 PCB guidelines.
Route analog and digital grounds as split planes joined at a single star under the MCU. Keep ADC traces short and away from PWM or EUSART switching lines; the 12-bit ADCC has ~60 dB rejection at 1 MHz but crosstalk from adjacent digital lines can corrupt low-level sensor readings. For noisy environments add a ferrite bead on analog VDD as recommended in the datasheet.
Do not leave the MCLR/RA3 pin floating - either tie to VDD through a 10 kΩ pull-up, or disable MCLR in CONFIG1 and use RA3 as a digital input. Floating MCLR causes intermittent resets. Also note that the trailing 'T' suffix denotes tape-and-reel; for prototype builds request the PIC16F18445-I/GZ (tray) variant instead.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. Industrial temperature grade -40 to +85 °C; not AEC-Q100 qualified (choose PIC16F18346T-I/GZVAO for automotive).
