PIC16F18446-I/SO - 8-bit XLP MCU, 28KB Flash, 32MHz | Microchip
MPN: PIC16F18446-I/SO ✓ Hoạt độngPIC16F18446-I/SO Tóm tắt
An 8-bit microcontroller (MCU) is a compact programmable processor that combines a CPU, non-volatile program memory, RAM, and peripheral interfaces on a single silicon die. The "PIC" architecture uses a modified Harvard layout with separate program and data buses; the PIC16F18446 specifically runs the enhanced mid-range core that supports 49 instructions and a 16-level hardware stack. Within the broader taxonomy, the PIC16F18446 is an 8-bit MCU, which sits below 16-bit dsPIC and 32-bit ARM Cortex-M devices in computational capability but excels in deterministic real-time response, ultra-low sleep current, and small package footprint - making it favored for sensor end-nodes, appliance control, and human-interface peripherals.
Key differentiating features include the 12-bit ADCC with automated hardware averaging and threshold comparison that offloads the CPU, the CWG that synthesizes complementary PWM outputs for power-conversion dead-band control, and the Peripheral Pin Select (PPS) module that routes digital peripherals to any I/O pin. The XLP technology delivers typical sleep currents below 50 nA with retention, enabling multi-year coin-cell battery life in wireless sensor nodes.
Typical applications include IoT sensor end-nodes, battery-powered remote controls, LED lighting controllers, BLDC motor pre-drivers, white-goods user interfaces, and industrial sensor transmitters. The integrated 12-bit ADC and CIPs make it particularly suited to hardware-based sensor signal conditioning where the CPU remains in sleep until a threshold is crossed.
Bộ thay thế dễ dàng lắp đặt cho PIC16F18446-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 PIC16F18446-I/SO (cùng hình factor và footprint) — khác nhau ở Package, ADC, MSL Level, Core Architecture, I/O Pins.
PIC16F18446-E/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18445-I/SO
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Xem tài liệu →PIC16F18444-I/SO
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Xem tài liệu →PIC16F18444T-I/SO
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Xem tài liệu →PIC16F18346-I/SO
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Xem tài liệu →PIC16F1829-I/SO
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Xem tài liệu →PIC16F18446-I/SO Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC16 enhanced mid-range 8-bit |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| Data SRAM | 2 KB |
| Data EEPROM | 256 bytes |
| Maximum CPU Frequency | 32 MHz |
| Operating Voltage Range | 1.8 V to 5.5 V |
| Hộp | 20-pin SOIC (-I/SO) |
| Nhiệt độ hoạt động | -40C to +85C (industrial) |
| ADC | 12-bit ADCC with computation |
| DAC | 5-bit DAC |
| PWM Channels | 2 x 10-bit PWM |
| Comparators | Yes (with DAC reference) |
| Communication | EUSART, SPI, I2C |
| CWG | Complementary Waveform Generator |
| XLP Sleep Current | <50 nA typical (retention) |
| Trạng thái RoHS | Compliant |
| Peripheral Pin Select | Yes (PPS) |
Cấu hình chân PIC16F18446-I/SO
| Chân 1 | RA0/ICSPDAT — Bidirectional I/O, ICSP data |
| Chân 2 | RA1/ICSPCLK — Bidirectional I/O, ICSP clock |
| Chân 3 | RA2 — Bidirectional I/O |
| Chân 4 | RA3/MCLR — Bidirectional I/O / Master Clear (reset) |
| Chân 5 | RA4 — Bidirectional I/O |
| Chân 6 | RA5 — Bidirectional I/O |
| Chân 7 | RA6 — Bidirectional I/O |
| Chân 8 | RA7 — Bidirectional I/O |
| Chân 9 | VSS — Ground reference |
| Chân 10 | RB0 — Bidirectional I/O |
| Chân 11 | RB1 — Bidirectional I/O |
| Chân 12 | RB2 — Bidirectional I/O |
| Chân 13 | RB3 — Bidirectional I/O |
| Chân 14 | RB4 — Bidirectional I/O |
| Chân 15 | RB5 — Bidirectional I/O |
| Chân 16 | RB6 — Bidirectional I/O, ICSPCLK shared |
| Chân 17 | RB7 — Bidirectional I/O, ICSPDAT shared |
| Chân 18 | VSS — Ground reference (secondary) |
| Chân 19 | VDD — Positive supply |
| Chân 20 | VDD — Positive supply (secondary) |
Ứng dụng tiêu biểu
PIC16F18446-I/SO phù hợp cho 6 Áp dụngs: Battery-Powered IoT Sensor End-Nodes, White-Goods and Appliance User Interface, LED Lighting and Driver Control, Industrial Sensor Transmitters, Remote Control and Consumer HMI, Brushless DC Motor Pre-Driver.
Battery-Powered IoT Sensor End-Nodes
Provides deterministic 8-bit processing and hardware sensor conditioning for wireless sensor nodes that operate from a coin cell for years. With XLP sleep current under 50 nA in retention mode, the PIC16F18446-I/SO enables duty-cycled temperature, humidity, or motion sensing with a multi-year battery budget on a single CR2032 cell. The 12-bit ADCC performs hardware averaging and threshold comparison that wakes the CPU only when meaningful data arrives - typical implementations pair this MCU with an SPI-LoRa or sub-GHz transceiver plus a low-power sensor.
Được đề xuất
White-Goods and Appliance User Interface
Drives capacitive-touch keypads, status LEDs, and buzzer indicators in washing-machine, dishwasher, and induction-cooktop user interfaces where cost-conscious 8-bit control is preferred over 32-bit MCUs. The PIC16F18446-I/SO's Peripheral Pin Select reassigns peripheral outputs to any I/O pin, simplifying PCB routing when capacitive-touch electrodes and LED drivers are scattered across the panel. Its CWG module also synthesizes dead-band-corrected PWM for heating-element or buzzer drive, replacing discrete logic with on-chip hardware - saving BOM cost at industrial volumes.
Được đề xuất
LED Lighting and Driver Control
Implements multi-channel constant-current LED drivers and color-mixing logic in architectural and horticultural luminaires with on-chip 10-bit PWM channels and the Complementary Waveform Generator. The PIC16F18446-I/SO's EUSART supports DMX512 or DALI bridges, while the 5-bit DAC adjusts analog current setpoints for tunable-white and RGBW luminaires. With 1.8 V to 5.5 V supply range, it adapts equally to 3.3 V digital logic rails or 5 V legacy analog LED-driver front-ends without level shifters - a typical 4-channel luminaire design fits within 8 KB of firmware.
Được đề xuất
Industrial Sensor Transmitters
Powers 4-20 mA loop-powered two-wire sensor transmitters in process instrumentation where the MCU must run from as little as 3.3 V derived from the loop's 4 mA minimum current budget. The PIC16F18446-I/SO's CWG and 12-bit ADCC combine to provide linearized temperature, pressure, or flow conversion entirely on-chip, with no external amplifier required for typical bridge-sensor signals. Its industrial -40C to +85C operating range supports deployment in unconditioned factory-floor enclosures - a typical RTD-based transmitter fits in 10 KB of firmware with HART stack modifications.
Được đề xuất
Remote Control and Consumer HMI
Decodes IR remote protocols and manages button-matrix keypads in TV remotes, set-top-box controllers, and smart-home HMI panels that value ultra-low standby consumption. With <50 nA sleep current, the PIC16F18446-I/SO enables one- to two-year battery life on a typical AAA-pair remote while retaining wake-on-IR capability through the CWG-driven external interrupt. The PIC16F enhanced mid-range core runs at 32 MHz, easily handling NEC, RC5, or SIRC protocol decoding in firmware under interrupt without DMA overhead typical of ARM MCUs.
Được đề xuất
Brushless DC Motor Pre-Driver
Generates the six-step or sinusoidal commutation waveforms needed to drive a small brushless DC motor fan or pump via its Complementary Waveform Generator with programmable dead-band. The PIC16F18446-I/SO's CWG module produces complementary PWM outputs with hardware dead-time insertion, freeing the CPU from tight timing loops and reducing software complexity. The 12-bit ADCC samples back-EMF for sensor-less commutation while the CIPs handle timing in hardware - typical MCU load remains under 30 percent even at 25 kHz PWM frequency with sinusoidal commutation.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F18446-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 | PIC16F18446-E/SO | PIC16F18445-I/SO | PIC16F18444-I/SO | PIC16F18346-I/SO | PIC16F1829-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SOIC | 20-SOIC - same | 20-SOIC - same | 20-SOIC - same | 20-SOIC - same | 20-SOIC - same |
| Flash Memory | 28 KB | 28 KB | 14 KB (-50%) | 14 KB (-50%) | 28 KB | 14 KB (-50%) |
| Data SRAM | 2 KB | 2 KB | 1 KB (-50%) | 1 KB (-50%) | 2 KB | 1 KB (-50%) |
| Data EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Temperature | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
Bảo phân biệt quan trọng
- Highest-density Flash in the 20-pin SOIC PIC16F184xx family (vsPIC16F18445-I/SO)
- Industry-leading ultra-low-power XLP technology (vsPIC16F18346-I/SO)
- Integrated Complementary Waveform Generator with hardware dead-band (vsPIC16F1829-I/SO)
Ghi chú thiết kế
Place a 100 nF decoupling capacitor as close as possible to each VDD pin (pins 19 and 20 share their internal power rail) and connect both VSS pins (9 and 18) to a common ground plane. Per Microchip's PIC16F184xx hardware guidance, avoid routing high-speed digital signals (EUSART, SPI) within 3 mm of the analog AVSS/VDD traces to minimize ADC channel cross-coupling - a separate analog ground island can improve ADC SNR by 6-10 dB at full 12-bit scale.
Do not load the ICSPDAT/ICSPCLK pins (RA0/RA1, RB6/RB7) with capacitive loads greater than 50 pF because the on-chip in-circuit serial programmer drives these pins during factory programming. Long traces to programming headers or test points may require series resistance of 100-470 ohm to dampen ringing. Per Microchip programming specification 40001798, the ICSP clock frequency must not exceed 4 MHz for reliable Flash programming on this family.
To achieve sub-50 nA sleep currents, disable the watchdog timer (WDTCONbits.SWDTEN = 0), place peripherals in their lowest-power state, configure all unused I/O as digital outputs driven low, and select the LFINTOSC as the system clock source. Estimated: with FVR off, ADC off, BOR disabled (Brown-Out Reset configured to lowest threshold or off), and the CWG/PWM/EUSART disabled, the typical IDD sleep current at 3.3 V and 25 C drops below 30 nA per Microchip XLP technology documentation.
Thông tin tuân thủ
RoHS and REACH compliance per Microchip product declaration. Not AEC-Q100 qualified - choose PIC16F18446T-E/SO VAO or PIC16F18446T-I/SO VAO variants for automotive-grade requirements.
