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型號(hào)：	HD4074394S
元件分類：	微控制器/微處理器
英文描述：	4-BIT, OTPROM, MICROCONTROLLER, PDIP28
封裝：	DP-28S
文件頁(yè)數(shù)：	154/675頁(yè)
文件大?。?/td>	2183K
代理商：	HD4074394S

Section 10 I/O Ports

(HD404358 and HD404358R Series)

Overview

Features

The HD404358 and HD404358R Series I/O ports have the following features.

HD404358 Series: The four pins R2

0 to R23 are medium voltage NMOS open drain I/O pins.

1 is an input-only pin. The D, R0, R1, R3, R4, and R8 port pins are standard voltage I/O

pins that, in output mode, are CMOS three state outputs.

HD404358R Series: Pins D

0 to D8, R0, R1, R2, R3, R4, and R8 are CMOS three state standard

voltage I/O pins. Of these, 20 pins (D

5 to D8, R0, R1, R2, and R8) can handle current levels of

up to 15 mA. Also, RA

1 is an input-only pin.

Certain I/O pins (D

0 to D4, and the pins in the R0, R3, and R4 ports) are shared with the built-

in peripheral modules, such as timers and the serial interface. Setting these pins for use with

the built-in peripheral modules takes priority over their setting for use as D or R port pins.

peripheral module usage for shared function pins.

All peripheral module output pins are CMOS outputs. However, the R0

2/SO pin can be

selected to be an NMOS open drain output by setting a register.

Since the system is reset in stop mode, the built-in peripheral module selections are cleared and

the I/O pins go to the high impedance state.

The CMOS output pins have built-in programmable pull-up MOS transistors. The on/off state

of these transistors can be controlled by register settings on an individual basis. Note that the

pull-up MOS transistor on/off settings are independent of the pin settings for use as built-in

peripheral module pins.

Table 10-1 provides an overview of the HD404358 Series port functions.

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相關(guān)代理商/技術(shù)參數(shù)	參數(shù)描述
HD4074408C	制造商:未知廠家制造商全稱:未知廠家功能描述:4-Bit Microcontroller
HD4074408F	制造商:未知廠家制造商全稱:未知廠家功能描述:4-Bit Microcontroller
HD4074408H	制造商:未知廠家制造商全稱:未知廠家功能描述:4-Bit Microcontroller
HD4074408S	制造商:Renesas Electronics Corporation 功能描述:HIT 4 BIT MICROCOMPUTER (ZTAT)
HD4074418C	制造商:未知廠家制造商全稱:未知廠家功能描述:4-Bit Microcontroller

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