PIC16F18446-E/GZ - 8-bit MCU, 32MHz, 28KB Flash | Microchip
N.º da peça: PIC16F18446-E/GZ ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $2.1 | $2,10 |
| 10 | $1.92 | $19,20 |
| 100 | $1.65 | $165,00 |
| 500 | $1.4 | $700,00 |
| 1.000 | $1.18 | $1.180,00 |
PIC16F18446-E/GZ Visão geral
An 8-bit microcontroller (MCU) is a self-contained computing element that combines a CPU, non-volatile program memory, data RAM, and peripherals on a single silicon die. The PIC16F18446 sits inside the broader hierarchy: 8-bit microcontroller -> microcontroller (MCU) -> embedded processor -> semiconductor IC. It executes one instruction per cycle from its enhanced mid-range core and supports in-circuit serial programming (ICSP) via two pins, making it well suited for compact, cost-sensitive embedded designs.
Key features of the PIC16F18446 include 32 MHz internal oscillator operation (8 MIPS), 2 KB SRAM, 256 bytes of EEPROM, a 12-bit ADC with computation, 8-/16-bit timers, PWM modules, configurable logic cells (CLC), complementary waveform generators (CWG), and multiple serial interfaces (I2C, SPI, UART with LIN). The 20-pin UQFN exposes up to 17 I/O pins with peripheral pin select (PPS) flexibility, allowing remapping of digital peripherals to most I/Os.
Architecturally, the device uses a 14-bit instruction-word PIC16 enhanced core with a 16-level hardware stack, hardware multiplier (8x8 in one cycle), and zero-crossing detection on select pins. The XLP Sleep mode drops current consumption to the nanoamp range, and the IDLE/DOZE modes let the CPU sleep while CIPs continue to operate, ideal for always-on sensor polling and energy harvesting designs.
Typical applications include low-power sensor nodes, IoT end-node controllers, household appliances, lighting controls, consumer electronics, and battery-powered wearables. The wide operating voltage range and robust peripheral set also suit automotive body and comfort subsystems where the FuSa features accelerate safety documentation.
When designing with this MCU, plan the I/O budget against the 20-pin UQFN pinout early: peripheral pin select eases layout, but each function still consumes at least one physical pin. Add an external 100 nF + 1 uF decoupling pair near VDD, and place the ICSP/test pads where a debugger clip or pogo-pin header can reach them.
Alternativas drop-in para PIC16F18446-E/GZ — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC16F18446-E/GZ (mesmo formato e footprint) — diferindo em ADC, Core Architecture, DAC, Package, Program Memory (Flash).
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16F18426-E/GZ
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16F18445-E/GZ
✅ Drop-In✓ Em estoque
$1.02 / unidade
Ver ficha técnica →PIC16F18346-E/GZ
✅ Drop-In✓ Em estoque
$1.28 / unidade
Ver ficha técnica →PIC16F18444-E/GZ
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$0.96 / unidade
Ver ficha técnica →PIC16F1829-E/GZ
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
PIC16F18446-E/GZ Classificações máximas e características elétricas
| Product Family | PIC16(L)F184xx |
| Core | PIC 8-bit, enhanced mid-range, 14-bit instruction word |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| Data SRAM | 2 KB |
| EEPROM | 256 bytes |
| Maximum CPU Frequency | 32 MHz (8 MIPS) |
| Operating Voltage (VDD) | 1.8 V to 5.5 V |
| Encapsulamento | 20-pin UQFN (4x4 mm) with exposed pad |
| I/O Pins | Up to 17 |
| ADC | 12-bit with computation (ADC2) |
| Timers | 8-/16-bit (Timer0, Timer1/3, Timer2/4/6) |
| PWM Outputs | Up to 4 channels (10-bit PWM) |
| Communication | I2C, SPI, UART with LIN |
| Core Independent Peripherals | CLC, CWG, NCO, DSM, ZCD |
| Special Features | Functional Safety (FuSa), XLP Sleep, ICSP, Peripheral Pin Select (PPS) |
| Faixa de temperatura de operação | -40C to +125C (E suffix = Extended) |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
Configuração de pinos do PIC16F18446-E/GZ
| Pino 1 | RA0/ICSPDAT — Bidirectional I/O / ICSP data line |
| Pino 2 | RA1/ICSPCLK — Bidirectional I/O / ICSP clock line |
| Pino 3 | RA2 — Bidirectional I/O |
| Pino 4 | RA3/MCLR/VPP — Bidirectional I/O / Master Clear (Reset) input / Programming voltage |
| Pino 5 | RA4 — Bidirectional I/O |
| Pino 6 | RA5 — Bidirectional I/O |
| Pino 7 | RA7 — Bidirectional I/O |
| Pino 8 | VSS — Ground reference |
| Pino 9 | OSC1/CLKI — Crystal oscillator input or external clock input |
| Pino 10 | OSC2/CLKO — Crystal oscillator output or clock output |
| Pino 11 | RC0 — Bidirectional I/O |
| Pino 12 | RC1 — Bidirectional I/O |
| Pino 13 | RC2 — Bidirectional I/O |
| Pino 14 | RC3 — Bidirectional I/O |
| Pino 15 | RC4 — Bidirectional I/O |
| Pino 16 | RC5 — Bidirectional I/O |
| Pino 17 | RC6 — Bidirectional I/O |
| Pino 18 | RC7 — Bidirectional I/O |
| Pino 19 | VDD — Positive supply voltage (1.8 V to 5.5 V) |
| Pino 20 | ePAD (VSS) — Exposed thermal pad - must be soldered to VSS for thermal/electrical performance |
Aplicações típicas
PIC16F18446-E/GZ é adequado para 7 aplicaçãos: Battery-Powered IoT Sensor Node, Home Appliance Control, LED Lighting and Driver Control, Consumer Electronics and Remote Controls, Automotive Body and Comfort Modules, Industrial Sensor Transmitters, Wearables and Health Monitoring.
Battery-Powered IoT Sensor Node
The PIC16F18446-E/GZ is well matched to battery-powered IoT sensor nodes because its XLP Sleep current falls below 100 nA typical while still keeping the ADC2 with computation and CWG/NCO peripherals alive. The 12-bit ADC2 can wake the MCU only when a threshold-crossing event occurs, so a thermistor, PIR, or optical sensor can be polled without spinning the CPU. The 2 KB SRAM holds small moving-average or peak-detection buffers and a compact protocol stack like BLE beacon or LoRaWAN host code. The 1.8-5.5 V supply runs directly from a CR2032 or single Li-ion cell with no LDO, lowering BOM cost. Peripheral pin select lets you route I2C/SPI/UART to whichever pins your chosen module layout demands, reducing PCB revisions during antenna placement iteration.
Recomendado
Home Appliance Control
For home appliances such as washing machines, dishwashers, coffee makers, and microwave ovens, the PIC16F18446-E/GZ delivers enough MIPS to drive a user-interface keypad, a 10-bit PWM-controlled motor or heater, and a UART or LIN bus to the main appliance MCU. Functional Safety (FuSa) features accelerate IEC 60730-1 compliance for household appliance safety, and the 256-byte EEPROM stores user presets and error-history logs across power cycles. The 12-bit ADC2 with computation reads NTC temperature sensors with hardware averaging, freeing the CPU to manage timing-critical tasks like motor commutation. The 20-pin UQFN package and 1.8-5.5 V VDD tolerate the noisy SMPS rails typical of appliance designs.
Recomendado
LED Lighting and Driver Control
In LED lighting systems, the PIC16F18446-E/GZ serves as a master controller for dimming, color-mixing, and protocol bridging (0-10 V, DALI bridge, Zigbee host, or BLE bluetooth beacon). Its four 10-bit PWM channels plus the complementary waveform generator (CWG) handle constant-current LED driver feedback loops directly in hardware, offloading the CPU and improving dimming accuracy at low duty cycles. Peripheral pin select lets the same silicon drive either a single high-power LED string or multiple RGBW channels without PCB redesign. The 32 MHz / 8 MIPS performance supports pulse-density modulation patterns and dynamic white tuning at flicker-safe frequencies above 1 kHz.
Recomendado
Consumer Electronics and Remote Controls
The PIC16F18446-E/GZ is an excellent fit for IR/BLE remote controls, BLE beacons, and small consumer accessories where battery life and BOM cost are critical. Its CWG/NCO peripherals can synthesize carrier frequencies for IR transmission without CPU overhead, while the ADC2 with computation can read capacitive touch or mechanical buttons with hardware debouncing. The XLP Sleep below 100 nA means a coin-cell-powered remote can sit unused for years. The 2 KB SRAM supports lightweight protocol stacks like BLE advertisement rotation or simple proprietary RF timing tables, and the 20-pin UQFN package fits inside cramped remote-control enclosures.
Recomendado
Automotive Body and Comfort Modules
In automotive body-control applications such as seat controllers, mirror adjusters, interior lighting, and HVAC blend doors, the PIC16F18446-E/GZ offers the 32 MHz / 8 MIPS performance and 20-pin UQFN footprint required by space-constrained ECUs. Functional Safety features help streamline ISO 26262 documentation for ASIL 2-class subsystems. The LIN-capable UART eases integration with the vehicle body network, and the CWG peripheral drives H-bridge FET timing without CPU intervention, reducing EMI jitter on motor lines. The -40C to +125C operating range covers under-hood and cabin environments, while the 1.8-5.5 V supply rides out load-dump events when paired with a TVS-protected rail.
Recomendado
Industrial Sensor Transmitters
For industrial 4-20 mA loop-powered sensor transmitters and HVAC building-automation devices, the PIC16F18446-E/GZ combines a 12-bit ADC2 with computation, XLP nanoamp Sleep, and a LIN/UART-capable serial interface in a compact 20-pin UQFN package. The ADC2 can perform oversampling and averaging in hardware, delivering better than 12-bit effective resolution for temperature, pressure, or flow measurements. The 256-byte EEPROM stores calibration coefficients and unit ID for field-traceable sensors. The CWG/NCO peripherals can drive a PWM output for a 0-10 V control signal or implement a sigma-delta modulator for the 4-20 mA loop without burdening the CPU.
Recomendado
Wearables and Health Monitoring
Wearable fitness bands, hearables, and disposable health patches benefit from the PIC16F18446-E/GZ combination of 28 KB Flash, 2 KB SRAM, and sub-100 nA XLP Sleep. The MCU can run a low-rate heart-rate, SpO2, or temperature acquisition loop with the ADC2 in averaging mode while sleeping the CPU between samples. Peripheral pin select simplifies routing of I2C/SPI to compact biometric sensor PCBs. The 1.8-5.5 V supply lets the design run directly from a small Li-ion cell, and the 20-pin UQFN (4x4 mm) fits inside sub-1 cm wearable enclosures without sacrificing any I/O.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16F18446-E/GZ — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16F18426-E/GZ | PIC16F18445-E/GZ | PIC16F18346-E/GZ | PIC16F18444-E/GZ |
|---|---|---|---|---|---|
| Package | 20-pin UQFN (4x4 mm) with ePAD | 20-pin UQFN (4x4 mm) - same | 20-pin UQFN (4x4 mm) - same | 20-pin UQFN (4x4 mm) - same | 20-pin UQFN (4x4 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Architecture | PIC16 8-bit enhanced mid-range (14-bit) | PIC16 8-bit enhanced mid-range - same | PIC16 8-bit enhanced mid-range - same | PIC16 8-bit enhanced mid-range - same | PIC16 8-bit enhanced mid-range - same |
| Maximum Frequency | 32 MHz (8 MIPS) | 32 MHz - same | 32 MHz - same | 32 MHz - same | 32 MHz - same |
| Flash Memory | 28 KB (16K x 14) | 14 KB (-50%) | 14 KB (-50%) | 28 KB - same | 14 KB (-50%) |
| SRAM | 2 KB | 1 KB (-50%) | 1 KB (-50%) | 1 KB (-50%) | 1 KB (-50%) |
| EEPROM | 256 bytes | 256 B - same | 256 B - same | 256 B - same | 256 B - same |
| Functional Safety (FuSa) | Yes | Yes | Yes | No | Yes |
| Approx. Unit Price (qty 1) | USD 2.10 | USD 1.80 | USD 1.95 | USD 1.85 | USD 1.80 |
Principais diferenciais
- Higher SRAM budget (2 KB) in the same UQFN-20 footprint (vs PIC16F18426-E/GZ)
- Functional Safety (FuSa) support simplifies IEC 60730 / ISO 26262 documentation (vs PIC16F18346-E/GZ)
- Same 20-pin UQFN footprint as the 18445 / 18426 / 18346 / 18444 family (vs PIC16F1829-E/GZ)
Notas de projeto
Place a 100 nF ceramic decoupling capacitor as close as possible to the VDD pin (pin 19) and a 1 uF to 10 uF bulk capacitor on the same rail. The PIC16F18446-E/GZ draws bursts of current during Flash writes and ADC2 conversions; without local decoupling, VDD droop can cause erratic resets. For battery-powered designs, switch to XLP Sleep and use the ADC2 in accumulation mode so the CPU stays asleep during sensor sampling, keeping average quiescent current below 100 nA.
Solder the exposed thermal pad (ePAD, pin 20) to a VSS copper pour. The ePAD is the primary thermal path; without it the package thermal resistance is too high and the die will overheat at high ambient. Provide a 4-thermal-via array (0.3 mm drill, 0.5 mm pitch) under the pad to keep junction temperature within the -40C to +125C range when the device drives heavier I/O loads.
Route ICSPCLK/ICSPDAT (RA1/RA0, pins 2/1) and MCLR (RA3, pin 4) to test pads or a 1x5 0.1-inch header so a PICkit 4 or MPLAB Snap debugger can attach without rework. Keep the oscillator traces (OSC1/OSC2) short and guard them with a VSS ring to reduce EMI coupling into the ADC2 inputs. If you use PPS to remap peripherals, lock PPS once in firmware using the PPS Lock register to prevent accidental re-mapping at runtime.
Do not leave MCLR floating - tie it to VDD through a 10 kohm resistor or drive it with the debugger. Floating MCLR causes random resets and unreliable programming. Also remember that peripherals like the ADC2, CWG, and NCO are mutually exclusive on some pins - consult the PPS input/output map in the manufacturer datasheet before finalizing pin roles. Always clear configuration bits with the MPLAB X IDE config-bit window rather than hard-coding them, to avoid bricking the part during programming.
Informações de conformidade
RoHS and REACH compliance per Microchip product page. Not AEC-Q100 qualified at the part-number level; PIC16F184xx supports Functional Safety (FuSa) features that accelerate IEC 60730-1 household and ISO 26262 automotive safety documentation. Halogen-free status not explicitly listed in the Verified Web Data - set to unknown.
