PIC18F45Q43-I/PT Microchip Integrated Circuit (Quad Flat Packages) In Stock
The PIC18F45Q43-I/PT is an 8-bit PIC18 microcontroller from Microchip with 32 KB Flash and a 64 MHz maximum clock in a 44-pin TQFP package. It integrates 12-bit ADC with computation, DAC, UART with DMA, SPI, I2C, and configurable logic for versatile embedded designs. Available from stock worldwide for consumer, industrial, and home automation applications.
- Manufacturer
- Microchip
- Package
- Quad Flat Packages
- Pin Count
- 44
- Lifecycle
- ACTIVE
- Datasheet
- PIC18F45Q43-I/PT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.1600(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 64 MHz PIC18 core with 32 KB Flash and 2 KB SRAM for cost-effective 8-bit embedded control
- 12-bit ADC with Computation (ADCC) performing averaging, threshold comparison, and low-pass filtering autonomously
- DMA-assisted UART, SPI, and I2C peripherals reducing CPU overhead in data-transfer-intensive applications
- Configurable Logic Cell (CLC) enabling custom glue logic without external gates or CPLDs
- DAC output and multiple PWM channels for analog signal generation and motor drive in a single chip
Applications
The PIC18F45Q43-I/PT targets home automation controllers, HVAC systems, and smart appliances that demand reliable 8-bit performance with rich analog and digital peripherals in a compact 44-pin TQFP footprint. Industrial sensor nodes leverage its 12-bit ADCC for autonomous oversampling and threshold detection without continuous CPU intervention. Battery-powered consumer products also use its low-power idle modes and DMA-driven UART to maintain serial communication links while the core sleeps, extending battery life significantly.
Specifications
| Manufacturer Package Code | TQFP-44 |
| Factory Lead Time | 6Weeks |
| Date Of Intro | 2019-12-20 |
| YTEOL | 19 |
| Has ADC | YES |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | PIC18 |
| Clock Frequency-Max | 64MHz |
| DAC Channels | YES |
| DMA Channels | YES |
| Format | FIXED POINT |
| Integrated Cache | NO |
| JESD-30 Code | S-PQFP-G44 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of DMA Channels | 6 |
| Number of External Interrupts | 3 |
| Number of I/O Lines | 36 |
| Number of Serial I/Os | 5 |
| Number of Timers | 8 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TQFP44,.47SQ,32 |
| Package Shape | SQUARE |
| Package Style | FLATPACK, THIN PROFILE |
| RAM (bytes) | 2048 |
| ROM (words) | 32768 |
| ROM Programmability | FLASH |
| Speed | 64MHz |
| Supply Current-Max | 13.8mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 1.8V |
| Supply Voltage-Nom | 3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.8mm |
| Terminal Position | QUAD |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Quad Flat Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the PIC18F45Q43-I/PT's ADC with Computation differ from a standard 12-bit ADC in reducing CPU load?
The ADCC on the PIC18F45Q43-I/PT can autonomously accumulate and average up to 1024 samples, apply a first-order low-pass filter, and trigger an interrupt only when a threshold is crossed, all without CPU intervention. This allows the 64 MHz core to remain in sleep mode between events, cutting average current consumption in sensor polling applications by more than 10×.
Which serial communication interfaces does the PIC18F45Q43-I/PT provide, and are they DMA-capable?
The PIC18F45Q43-I/PT includes up to 2 UART ports, 2 SPI modules, and 2 I2C interfaces. Both UART and SPI support DMA transfers, allowing blocks of up to 65535 bytes to be moved between peripherals and RAM without stalling the CPU, enabling full-duplex serial communication alongside active 64 MHz computation tasks.
For a smart thermostat application, why is the PIC18F45Q43-I/PT a good fit compared to a 32-bit MCU?
A smart thermostat requires ADC-based temperature sensing, PWM for fan or valve control, and a UART link to a Wi-Fi module — tasks the PIC18F45Q43-I/PT handles at 64 MHz with 32 KB Flash and 2 KB SRAM at a lower unit cost than most 32-bit alternatives. Its 44-pin TQFP footprint occupies under 100 mm² of board area, and the ADCC handles sensor averaging autonomously, keeping the bill of materials and power budget minimal.
What is the Flash endurance of the PIC18F45Q43-I/PT, and how does it affect field firmware update strategies?
The PIC18F45Q43-I/PT Flash is rated for at least 10,000 erase/write cycles per block. For products that receive infrequent OTA updates — say once per month — this endurance supports more than 800 years of updates, making single-partition in-application programming practical without wear-leveling, provided the firmware image fits within the 32 KB Flash space.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.5900 | $1.59 |
| 5+ | $1.5800 | $7.90 |
| 25+ | $1.4600 | $36.50 |
| 100+ | $1.3200 | $132.00 |
| 1000+ | $1.2200 | $1220.00 |
| 5000+ | $1.1600 | $5800.00 |
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