PIC18F4450T-I/ML【PDF 165/241 页】IC PIC MCU FLASH 8KX16 44QFN

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Sheet目录3872

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2008 Microchip Technology Inc.

DS39760D-page 1

Universal Serial Bus Features:

USB V2.0 Compliant

Low Speed (1.5 Mb/s) and Full Speed (12 Mb/s)

Supports Control, Interrupt, Isochronous and

Bulk Transfers

Supports Up to 32 Endpoints (16 bidirectional)

256-Byte Dual Access RAM for USB

On-Chip USB Transceiver with On-Chip Voltage

Regulator

Interface for Off-Chip USB Transceiver

Power-Managed Modes:

Run: CPU on, Peripherals on

Idle: CPU off, Peripherals on

Sleep: CPU off, Peripherals off

Idle mode Currents Down to 5.8

μA Typical

Sleep mode Currents Down to 0.1

μA Typical

Timer1 Oscillator: 1.8

μA Typical, 32 kHz, 2V

Watchdog Timer: 2.1

μA Typical

Two-Speed Oscillator Start-up

Flexible Oscillator Structure:

Four Crystal modes, including High-Precision PLL

for USB

Two External Clock modes, up to 48 MHz

Internal 31 kHz Oscillator

Secondary Oscillator using Timer1 @ 32 kHz

Dual Oscillator Options allow Microcontroller and

USB module to Run at Different Clock Speeds

Fail-Safe Clock Monitor:

- Allows for safe shutdown if any clock stops

Peripheral Highlights:

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

Three External Interrupts

Three Timer modules (Timer0 to Timer2)

Capture/Compare/PWM (CCP) module:

- Capture is 16-bit, max. resolution 5.2 ns

- Compare is 16-bit, max. resolution 83.3 ns

- PWM output: PWM resolution is 1 to 10-bit

Enhanced USART module:

- LIN bus support

10-Bit, Up to 13-Channel Analog-to-Digital Converter

module (A/D):

- Up to 100 ksps sampling rate

- Programmable acquisition time

Special Microcontroller Features:

C Compiler Optimized Architecture with Optional

Extended Instruction Set

Flash Memory Retention: > 40 Years

Self-Programmable under Software Control

Priority Levels for Interrupts

8 x 8 Single-Cycle Hardware Multiplier

Extended Watchdog Timer (WDT):

- Programmable period from 4 ms to 131s

Programmable Code Protection

Single-Supply In-Circuit Serial Programming

(ICSP) via Two Pins

In-Circuit Debug (ICD) via Two Pins

Optional Dedicated ICD/ICSP Port

(44-pin TQFP devices only)

Wide Operating Voltage Range (2.0V to 5.5V)

Device

Program Memory

Data

Memory

SRAM

(bytes)

I/O

10-Bit A/D

(ch)

CCP

EUSART

Timers

8/16-Bit

Flash

(bytes)

# Single-Word

Instructions

PIC18F2450

16K

8192

768*

1/2

PIC18F4450

16K

8192

768*

1/2

* Includes 256 bytes of dual access RAM used by USB module and shared with data memory.

28/40/44-Pin High-Performance, 12 MIPS, Enhanced Flash,

USB Microcontrollers with nanoWatt Technology

PIC18F2450/4450

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