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您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄45252 > MC80C52CXXX-25SCD (ATMEL CORP) 8-BIT, MROM, 25 MHz, MICROCONTROLLER, CDIP40 PDF資料下載

型號(hào)：	MC80C52CXXX-25SCD
廠商：	ATMEL CORP
元件分類：	微控制器/微處理器
英文描述：	8-BIT, MROM, 25 MHz, MICROCONTROLLER, CDIP40
封裝：	0.600 INCH, SIDE BRAZED, DIP-40
文件頁(yè)數(shù)：	190/839頁(yè)
文件大?。?/td>	22337K
代理商：	MC80C52CXXX-25SCD

XMEGA C3 [DATASHEET]

8492F–AVR–07/2013

I/O Ports

Features

50 general purpose input and output pins with individual configuration

Output driver with configurable driver and pull settings:

Inverted I/O

Input with synchronous and/or asynchronous sensing with interrupts and events

Sense both edges

Sense rising edges

Sense falling edges

Sense low level

Optional pull-up and pull-down resistor on input and Wired-OR/AND configurations

Asynchronous pin change sensing that can wake the device from all sleep modes

Two port interrupts with pin masking per I/O port

Efficient and safe access to port pins

Hardware read-modify-write through dedicated toggle/clear/set registers

Configuration of multiple pins in a single operation

Mapping of port registers into bit-accessible I/O memory space

Peripheral clocks output on port pin

Real-time counter clock output to port pin

Event channels can be output on port pin

Remapping of digital peripheral pin functions

Selectable USART, SPI, and timer/counter input/output pin locations

Overview

One port consists of up to eight port pins: pin 0 to 7. Each port pin can be configured as input or output with configurable

driver and pull settings. They also implement synchronous and asynchronous input sensing with interrupts and events for

selectable pin change conditions. Asynchronous pin-change sensing means that a pin change can wake the device from

all sleep modes, included the modes where no clocks are running.

All functions are individual and configurable per pin, but several pins can be configured in a single operation. The pins

have hardware read-modify-write (RMW) functionality for safe and correct change of drive value and/or pull resistor

configuration. The direction of one port pin can be changed without unintentionally changing the direction of any other

The port pin configuration also controls input and output selection of other device functions. It is possible to have both the

peripheral clock and the real-time clock output to a port pin, and available for external use. The same applies to events

from the event system that can be used to synchronize and control external functions. Other digital peripherals, such as

USART, SPI, and timer/counters, can be remapped to selectable pin locations in order to optimize pin-out versus

application needs.

The notation of the ports are PORTA, PORTB, PORTC, PORTD, PORTE, PORTF and PORTR.

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