PIC18F45K20-I/PT Microchip Integrated Circuit (Quad Flat Packages) In Stock
The PIC18F45K20-I/PT is an 8-bit PIC18 microcontroller with 32 KB Flash, 36 I/O pins, and a 64 MHz maximum clock in Microchip's nanoWatt XLP low-power family. It integrates an ADC, EUSART, SPI, and I2C and operates down to 1.8 V supply, making it suitable for battery-powered sensor and control applications.
- Manufacturer
- Microchip
- Package
- Quad Flat Packages
- Pin Count
- 44
- Lifecycle
- ACTIVE
- Datasheet
- PIC18F45K20-I/PT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.1960(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
- 8-bit PIC18 core running at up to 64 MHz for responsive embedded control
- 32 KB Flash program memory with self-write capability for field firmware updates
- 36 I/O pins in TQFP-44 for dense GPIO and peripheral connectivity on compact boards
- Integrated 10-bit ADC with multiple channels for direct analog sensor interfacing
- nanoWatt XLP technology enabling operation down to 1.8 V and microamp sleep currents
- Hardware EUSART, SPI, and I2C peripherals reducing CPU overhead for communication tasks
Applications
The PIC18F45K20-I/PT is widely used in battery-powered data loggers, HVAC controllers, and building automation nodes where its nanoWatt low-power modes extend operational life. Its combination of 36 I/O, 10-bit ADC, and multi-protocol serial support also makes it a practical choice for industrial sensor hubs and consumer appliances requiring mixed analog-digital signal processing at 1.8 V to 5.5 V supply.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TQFP-44 |
| Factory Lead Time | 7Weeks |
| YTEOL | 8 |
| Has ADC | YES |
| Additional Feature | ALSO OPERATES AT 1.8V MIN SUPPLY FOR 16 MHZ AND OPERATES AT 2V FOR 20 MHZ |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | PIC18 |
| Clock Frequency-Max | 64MHz |
| DAC Channels | NO |
| DMA Channels | NO |
| Format | FIXED POINT |
| Integrated Cache | NO |
| JESD-30 Code | S-PQFP-G44 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of External Interrupts | 3 |
| Number of I/O Lines | 36 |
| Number of Serial I/Os | 1 |
| Number of Timers | 6 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TQFP44,.39SQ,31 |
| Package Shape | SQUARE |
| Package Style | FLATPACK, THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 1536 |
| ROM (words) | 32768 |
| ROM Programmability | FLASH |
| Screening Level | TS 16949 |
| Speed | 64MHz |
| Supply Current-Max | 15mA |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 3V |
| Supply Voltage-Nom | 3.3V |
| 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) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | 3A991.A.2 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Philippines, Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How low can the supply voltage drop before PIC18F45K20-I/PT stops operating, and how does that affect battery choice?
PIC18F45K20-I/PT operates from a supply as low as 1.8 V at clock frequencies up to 16 MHz, and from 2.0 V for up to 20 MHz operation. This allows the MCU to run directly from two AA alkaline cells as they discharge toward end-of-life, eliminating the need for a boost regulator and reducing BOM cost in handheld and wireless sensor designs.
For a multi-sensor data-acquisition board, how many ADC channels does PIC18F45K20-I/PT provide, and what is the resolution?
The PIC18F45K20-I/PT includes a 10-bit ADC with up to 13 multiplexed analog input channels. This resolution and channel count supports simultaneous monitoring of temperature, pressure, and current sensors in a single-chip design, with the 10-bit conversion delivering about 4.9 mV resolution on a 5 V reference, adequate for most general-purpose industrial measurement tasks.
Which serial interfaces are available on PIC18F45K20-I/PT for connecting to displays, memory, or wireless modules?
PIC18F45K20-I/PT integrates a hardware EUSART for RS-232/RS-485 or LIN communication, an MSSP module supporting both SPI (up to 16 MHz) and I2C for connecting EEPROMs, sensors, and display controllers. These 3 hardware serial ports allow simultaneous multi-bus topologies without bit-banging, keeping the 64 MHz PIC18 core free for application logic.
How does PIC18F45K20-I/PT's TQFP-44 package compare to a DIP package for prototyping and production assembly?
The 44-pin TQFP package used in PIC18F45K20-I/PT has a 0.8 mm pin pitch and a 10 mm x 10 mm body, which requires standard SMT reflow assembly rather than through-hole soldering. While TQFP is less breadboard-friendly than DIP, the 44-pin count gives access to all 36 I/O pins and is well supported by low-cost QFP adapter boards for prototyping and pick-and-place lines for volume production.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.3800 | $2.38 |
| 25+ | $2.2510 | $56.27 |
| 100+ | $2.1960 | $219.60 |
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