PIC16F18446-I/SO - 8-bit XLP MCU, 28KB Flash, 32MHz | Microchip
Référence : PIC16F18446-I/SO ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $1.84 | $1,84 |
| 10 | $1.66 | $16,60 |
| 100 | $1.42 | $142,00 |
| 500 | $1.24 | $620,00 |
| 1 000 | $1.08 | $1 080,00 |
PIC16F18446-I/SO Présentation
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.
Alternatives de remplacement direct pour PIC16F18446-I/SO — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC16F18446-I/SO (même facteur de forme et même empreinte) — différant par Package, ADC, MSL Level, Core Architecture, I/O Pins.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16F18446-E/SO
✅ Remplacement direct✓ En stock
$1.34 / unité
Voir la fiche technique →PIC16F18445-I/SO
✅ Remplacement direct✓ En stock
$1.45 / unité
Voir la fiche technique →PIC16F18444-I/SO
✅ Remplacement direct✓ En stock
$0.68 / unité
Voir la fiche technique →PIC16F18444T-I/SO
✅ Remplacement direct✓ En stock
$0.55 / unité
Voir la fiche technique →PIC16F18346-I/SO
✅ Remplacement direct✓ En stock
$1.28 / unité
Voir la fiche technique →PIC16F1829-I/SO
✅ Remplacement direct✓ En stock
$1.2 / unité
Voir la fiche technique →PIC16F18446-I/SO Valeurs maximales et caractéristiques électriques
| 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 |
| Boîtier | 20-pin SOIC (-I/SO) |
| Température de fonctionnement | -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) |
| Statut RoHS | Compliant |
| Peripheral Pin Select | Yes (PPS) |
Configuration des broches de PIC16F18446-I/SO
| Broche 1 | RA0/ICSPDAT — Bidirectional I/O, ICSP data |
| Broche 2 | RA1/ICSPCLK — Bidirectional I/O, ICSP clock |
| Broche 3 | RA2 — Bidirectional I/O |
| Broche 4 | RA3/MCLR — Bidirectional I/O / Master Clear (reset) |
| Broche 5 | RA4 — Bidirectional I/O |
| Broche 6 | RA5 — Bidirectional I/O |
| Broche 7 | RA6 — Bidirectional I/O |
| Broche 8 | RA7 — Bidirectional I/O |
| Broche 9 | VSS — Ground reference |
| Broche 10 | RB0 — Bidirectional I/O |
| Broche 11 | RB1 — Bidirectional I/O |
| Broche 12 | RB2 — Bidirectional I/O |
| Broche 13 | RB3 — Bidirectional I/O |
| Broche 14 | RB4 — Bidirectional I/O |
| Broche 15 | RB5 — Bidirectional I/O |
| Broche 16 | RB6 — Bidirectional I/O, ICSPCLK shared |
| Broche 17 | RB7 — Bidirectional I/O, ICSPDAT shared |
| Broche 18 | VSS — Ground reference (secondary) |
| Broche 19 | VDD — Positive supply |
| Broche 20 | VDD — Positive supply (secondary) |
Applications typiques
PIC16F18446-I/SO convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16F18446-I/SO — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- Highest-density Flash in the 20-pin SOIC PIC16F184xx family (vs PIC16F18445-I/SO)
- Industry-leading ultra-low-power XLP technology (vs PIC16F18346-I/SO)
- Integrated Complementary Waveform Generator with hardware dead-band (vs PIC16F1829-I/SO)
Notes de conception
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.
Informations de conformité
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.
