PIC18F45K20-I/MV【PDF 158/234 页】MCU 32KB FLASH 1536B RAM 40-UQFN

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2010 Microchip Technology Inc.

DS41303G-page 3

PIC18F2XK20/4XK20

High-Performance RISC CPU:

C Compiler Optimized Architecture:

- Optional extended instruction set designed to

optimize re-entrant code

Up to 1024 bytes Data EEPROM

Up to 64 Kbytes Linear Program Memory

Addressing

Up to 3936 bytes Linear Data Memory Addressing

Up to 16 MIPS Operation

16-bit Wide Instructions, 8-bit Wide Data Path

Priority Levels for Interrupts

31-Level, Software Accessible Hardware Stack

8 x 8 Single-Cycle Hardware Multiplier

Flexible Oscillator Structure:

Precision 16 MHz Internal Oscillator Block:

- Factory calibrated to ± 1%

- Software selectable frequencies range of

31 kHz to 16 MHz

- 64 MHz performance available using PLL –

no external components required

Four Crystal modes up to 64 MHz

Two External Clock modes up to 64 MHz

4X Phase Lock Loop (PLL)

Secondary Oscillator using Timer1 @ 32 kHz

Fail-Safe Clock Monitor:

- Allows for safe shutdown if peripheral clock

stops

- Two-Speed Oscillator Start-up

Special Microcontroller Features:

Operating Voltage Range: 1.8V to 3.6V

Self-Programmable under Software Control

Programmable 16-Level High/Low-Voltage

Detection (HLVD) module:

- Interrupt on High/Low-Voltage Detection

Programmable Brown-out Reset (BOR):

- With software enable option

Extended Watchdog Timer (WDT):

- Programmable period from 4 ms to 131s

Single-Supply 3V In-Circuit Serial

Programming (ICSP) via Two Pins

In-Circuit Debug (ICD) via Two Pins

Extreme Low-Power Management

with nanoWatt XLP:

Sleep mode: < 100 nA @ 1.8V

Watchdog Timer: < 800 nA @ 1.8V

Timer1 Oscillator: < 800 nA @ 32 kHz and 1.8V

Analog Features:

Analog-to-Digital Converter (ADC) module:

- 10-bit resolution, 13 External Channels

- Auto-acquisition capability

- Conversion available during Sleep

- 1.2V Fixed Voltage Reference (FVR) channel

- Independent input multiplexing

Analog Comparator module:

- Two rail-to-rail analog comparators

- Independent input multiplexing

Voltage Reference (CVREF) module

- Programmable (% VDD), 16 steps

- Two 16-level voltage ranges using VREF pins

Peripheral Highlights:

Up to 35 I/O Pins plus 1 Input-only Pin:

- High-Current Sink/Source 25 mA/25 mA

- Three programmable external interrupts

- Four programmable interrupt-on-change

- Eight programmable weak pull-ups

- Programmable slew rate

Capture/Compare/PWM (CCP) module

Enhanced CCP (ECCP) module:

- One, two or four PWM outputs

- Selectable polarity

- Programmable dead time

- Auto-Shutdown and Auto-Restart

Master Synchronous Serial Port (MSSP) module

- 3-wire SPI (supports all 4 modes)

-I2C Master and Slave modes with address

mask

Enhanced Universal Synchronous Asynchronous

Receiver Transmitter (EUSART) module:

- Supports RS-485, RS-232 and LIN

- RS-232 operation using internal oscillator

- Auto-Wake-up on Break

- Auto-Baud Detect

28/40/44-Pin Flash Microcontrollers

with nanoWatt XLP Technology

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