PIC16LF18445-E/SO - 14KB Flash 8-bit MCU, SOIC-20 | Microchip
N.º da peça: PIC16LF18445-E/SO ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $1.62 | $1,62 |
| 10 | $1.49 | $14,90 |
| 100 | $1.27 | $127,00 |
| 500 | $1.08 | $540,00 |
| 1.000 | $0.95 | $950,00 |
PIC16LF18445-E/SO Visão geral
An 8-bit microcontroller (MCU) is a programmable integrated circuit containing a CPU, Flash program memory, SRAM data memory, and configurable peripherals. The PIC architecture follows a Harvard RISC design with a 14-bit instruction word, where each instruction executes in one clock cycle (4 oscillator cycles). MCUs sit in the hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor, and serve as the decision-making core of countless battery-powered and industrial systems.
Key differentiating features of the PIC16LF18445 include Core Independent Peripherals (CIPs) such as the Complementary Waveform Generator (CWG), Configurable Logic Cell (CLC), 12-bit Analog-to-Digital Converter with Computation (ADCC), 5-bit DAC, two PWM modules, EUSART, SPI, and I2C peripherals. The device integrates eXtreme Low-Power (XLP) technology with sleep currents below 50 nA typical and active current under 50 uA/MHz, qualifying it for energy harvesting and IoT sensor nodes. The 12-bit ADCC provides automated averaging, threshold detection, and hardware accumulation, offloading signal-conditioning code from the CPU.
Typical applications include industrial sensor interfaces, battery-powered IoT nodes, consumer appliance controls, low-power remote controls, and motor control in small BLDC fans or stepper drivers. The wide 1.8V to 3.6V supply range allows direct connection to a single Li-ion or two AA cells without external regulation, simplifying BOM. For designs already using the 20-SOIC footprint, the PIC16F18445 (5V variant) and PIC16LF18444 (reduced-pin predecessor) remain drop-in compatible alternatives on the same 20-SOIC pad pattern, enabling platform scalability across voltage rails.
One important design consideration: verify the SOIC-20 footprint matches the 0.295 inch body width used by this part. Choosing a less expensive 0.300 inch width footprint will not mate correctly. This page compiles distributor pricing, drop-in alternatives, and practical design notes not aggregated elsewhere on manufacturer datasheets.
Alternativas drop-in para PIC16LF18445-E/SO — 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 PIC16LF18445-E/SO (mesmo formato e footprint) — diferindo em Package, ADC, Comparators, Program Memory (Flash), Core Architecture.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16LF18445-I/SO
✅ Drop-In✓ Em estoque
$1.15 / unidade
Ver ficha técnica →PIC16F18445-E/SO
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16F18445-I/SO
✅ Drop-In✓ Em estoque
$1.45 / unidade
Ver ficha técnica →PIC16LF18444T-I/SO
✅ Drop-In✓ Em estoque
$0.76 / unidade
Ver ficha técnica →PIC16LF18444-I/GZ
✅ Drop-In✓ Em estoque
$0.78 / unidade
Ver ficha técnica →PIC16LF18446-I/SO
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$1.02 / unidade
Ver ficha técnica →PIC16LF18445-E/SO Classificações máximas e características elétricas
| Core | PIC 8-bit RISC (Harvard) |
| Instruction Word | 14-bit |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data RAM | 1 KB |
| Data EEPROM | 256 bytes |
| Max CPU Speed | 32 MHz |
| Supply Voltage (LF) | 1.8 V to 3.6 V |
| I/O Pins | 17 |
| ADC | 12-bit ADCC, up to 17 channels |
| DAC | 5-bit DAC |
| Comparators | 2 |
| PWM Channels | 2 (10-bit) |
| Communication | EUSART, SPI, I2C |
| Encapsulamento | 20-SOIC (0.295 in / 7.50 mm width) |
| Temperatura de operação | -40C to +125C (E suffix) |
| Core Independent Peripherals | CWG, CLC, NCO |
| Status RoHS | Compliant |
Configuração de pinos do PIC16LF18445-E/SO
| Pino 1 | VDD — Positive supply (1.8V to 3.6V) |
| Pino 2 | RA5 — Bidirectional I/O with ADC and IOC |
| Pino 3 | RA4 — Bidirectional I/O with ADC and IOC |
| Pino 4 | RA3/MCLR — Input only / Master Clear reset |
| Pino 5 | RC5 — Bidirectional I/O with ADC and PWM |
| Pino 6 | RC4 — Bidirectional I/O with ADC and PWM |
| Pino 7 | RC3 — Bidirectional I/O with ADC and PWM |
| Pino 8 | RC2 — Bidirectional I/O with ADC and PWM |
| Pino 9 | RC1 — Bidirectional I/O with EUSART TX/CK and PWM |
| Pino 10 | RC0 — Bidirectional I/O with EUSART RX/DT |
| Pino 11 | RA2 — Bidirectional I/O with DAC and comparator output |
| Pino 12 | RA1 — Bidirectional I/O with comparator and DAC reference |
| Pino 13 | RA0 — Bidirectional I/O with ICSPDAT |
| Pino 14 | VSS — Ground reference |
| Pino 15 | RB7 — Bidirectional I/O with ICSPCLK and ADC |
| Pino 16 | RB6 — Bidirectional I/O with ADC and CWG output |
| Pino 17 | RB5 — Bidirectional I/O with ADC and PWM |
| Pino 18 | RB4 — Bidirectional I/O with ADC and PWM |
| Pino 19 | RC7 — Bidirectional I/O with ADC and CWG output |
| Pino 20 | RC6 — Bidirectional I/O with ADC and CWG output |
Aplicações típicas
PIC16LF18445-E/SO é adequado para 6 aplicaçãos: Battery-Powered IoT Sensor Node, Industrial Sensor Signal Conditioning, Small BLDC / Stepper Motor Control, Consumer Remote Control / HMI Keypad, Automotive Lighting / LED Driver Control, Test & Measurement Handheld Instrument.
Battery-Powered IoT Sensor Node
The PIC16LF18445-E/SO is well suited for battery-powered IoT sensor nodes because of its 1.8V to 3.6V wide low-voltage supply range and eXtreme Low-Power (XLP) technology that keeps sleep current below 50 nA typical. The 12-bit ADCC with hardware accumulation enables multi-sample averaging while the CPU is asleep, reducing total system energy by an order of magnitude compared with polling architectures. Engineers typically pair it with a 2.4 GHz sub-GHz radio on the same 3V coin-cell rail. The 17 GPIO provide headroom for I2C/SPI sensors, indicator LEDs, and a wake-up interrupt button.
Recomendado
Industrial Sensor Signal Conditioning
For 4-20 mA loop-powered industrial sensor conditioning, the PIC16LF18445-E/SO's extended -40C to +125C temperature grade and 12-bit ADCC with integrated threshold detection are decisive. The CLC and CWG peripherals can implement hardware-level fail-safe outputs that continue functioning even if the CPU is halted by a fault, meeting industrial SIL requirements. The 5-bit DAC supports excitation current trimming for bridge sensors. Compared with a discrete op-amp + ADC solution, this integrated approach shrinks the BOM by 30-50% and improves ESD/EMC margins.
Recomendado
Small BLDC / Stepper Motor Control
The Complementary Waveform Generator (CWG) provides hardware dead-band control and complementary PWM outputs suited for low-voltage 3V BLDC or stepper drives up to a few hundred milliamps. The two PWM channels can drive high-side and low-side FET gates with programmable dead time, eliminating software timing jitter. With 32 MHz CPU and 14KB Flash, simple FOC or 6-step commutation algorithms fit comfortably. The 'LF' supply range (1.8-3.6V) matches single-cell Li-ion battery motor packs for small fans or vibrator motors.
Recomendado
Consumer Remote Control / HMI Keypad
In a TV remote, smart thermostat keypad, or appliance control panel, the PIC16LF18445-E/SO's XLP sleep mode (<50 nA) keeps coin-cell batteries running for years. The 12-bit ADCC supports touch-button proximity sensing via a simple RC network, and the CLC can debounce mechanical buttons in hardware before the CPU ever wakes. EUSART/SPI/I2C provide connectivity to RF transceivers or LED driver chips. Its 1KB RAM is sufficient for menu state machines and small icon bitmaps.
Recomendado
Automotive Lighting / LED Driver Control
For interior LED lighting strips, ambient cabin lighting, or motorcycle tail-light controllers, the PIC16LF18445-E/SO's extended temperature range and Core Independent Peripherals deliver robust performance. The CWG provides flicker-free PWM dimming down to 0.1% duty cycle, while the 12-bit ADCC monitors battery voltage and temperature for fault detection. Although not AEC-Q100 qualified, in-cabin automotive applications can use it when paired with an external automotive-grade regulator. The 14KB Flash holds LIN-style software stacks and lighting animations.
Recomendado
Test & Measurement Handheld Instrument
Portable multimeters, cable testers, and field-installed sensor calibrators benefit from the PIC16LF18445-E/SO's combination of low power, 12-bit ADCC, and multiple serial interfaces. Engineers can implement a 4-digit DMM front end using the ADCC for voltage/current measurement and the 5-bit DAC for reference trimming. The CLC can implement a hardware frequency counter that runs while the CPU samples, offloading the time-critical gate timing. Three AA cells (4.5V max) exceed the 3.6V supply range, requiring an external LDO such as MCP1700.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16LF18445-E/SO — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16LF18445-I/SO | PIC16F18445-E/SO | PIC16LF18444T-I/SO |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SOIC (0.295 in) | 20-SOIC (0.295 in) - same | 20-SOIC (0.295 in) - same | 20-SOIC (0.295 in) - same |
| Flash Memory | 14 KB | 14 KB | 14 KB | 7 KB |
| RAM | 1 KB | 1 KB | 1 KB | 512 B |
| Supply Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V |
| Temperature Range | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) | -40C to +85C (I) |
| ADC Resolution | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC |
| CIPs (CWG/CLC/NCO) | Yes | Yes | Yes | Yes |
Principais diferenciais
- Core Independent Peripherals (CIPs) for hardware glue logic (vs PIC16LF18444T-I/SO)
- Extended temperature grade for industrial environments (vs PIC16LF18445-I/SO)
- Lower-voltage operation than F variant (vs PIC16F18445-E/SO)
Notas de projeto
Estimated: at 32 MHz CPU, 3.3V supply, and active peripherals the PIC16LF18445 draws approximately 5-8 mA active. Sleep current with RTC running is sub-uA. For coin-cell designs, gate the I/O pull-ups through software to eliminate parasitic leakage paths; the typical 'disabled pull-up on RA' guideline reduces quiescent current by 2-5 uA per pin. Use the FVR (Fixed Voltage Reference) module to bias the ADC reference from the internal 1.024V or 2.048V source to remove external reference current.
Place a 100 nF decoupling capacitor within 3 mm of VDD (pin 1), and a bulk 4.7 uF or 10 uF tantalum/ceramic capacitor adjacent to it. The 20-SOIC footprint (0.295 inch / 7.50 mm body width) is critical: many PCB libraries default to 0.300 inch wide SOIC-20 which will not mate correctly. Verify land pattern against Microchip package specification document. Provide a dedicated ground pour under the IC with at least 4 vias stitching the top and bottom ground planes for thermal and EMI performance.
Do not exceed 3.6V on VDD on the LF variant - the device lacks 5V tolerance and will permanently latch up. The MCLR/RA3 pin is input-only when used as MCLR but bidirectional when used as a GPIO. Ensure the ICSPDAT/ICSPCLK pins (RA0/RB7) are not pulled low at reset or the application code cannot execute. The CWG peripheral requires careful dead-band configuration to prevent shoot-through in complementary drive applications; consult the family reference manual section on CWG before powering FETs.
The 12-bit ADCC achieves best performance when the source impedance is below 1 kohm and the acquisition time is at least 4 ADC clock cycles. For 4-20 mA loop sensing, add a 100 ohm series resistor and a 10 nF filter capacitor at the ADC input. The EUSART in synchronous master mode produces a clean SPI substitute for high-speed peripheral interconnects up to 8 MHz; for higher rates, use the dedicated MSSP module in SPI mode.
Informações de conformidade
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - for automotive applications, consult Microchip automotive-grade PIC16F184xx variants.
