參數(shù)資料
型號(hào)： MC68HC05C9ECP
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP40
封裝： PLASTIC, DIP-40
文件頁(yè)數(shù)： 38/106頁(yè)
文件大?。?/td> 659K
代理商： MC68HC05C9ECP
MC68HC05C9E Advance Information Data Sheet, Rev. 0.1
Freescale Semiconductor
37
Chapter 7
Input/Output Ports
7.1 Introduction
This section briefly describes the 31 input/output (I/O) lines arranged as one 7-bit and three 8-bit ports.
All of these port pins are programmable as either inputs or outputs under software control of the data
direction registers.
NOTE
To avoid a glitch on the output pins, write data to the I/O port data register
before writing a 1 to the corresponding data direction register.
7.2 Port A
Port A is an 8-bit bidirectional port which does not share any of its pins with other subsystems. The port
A data register is at $0000 and the data direction register (DDR) is at $0004. The contents of the port A
data register are indeterminate at initial power-up and must be initialized by user software. Reset does
not affect the data registers, but clears the data direction registers, thereby returning the ports to inputs.
Writing a 1 to a DDR bit sets the corresponding port bit to output mode. A block diagram of the port logic
is shown in Figure 7-1.
Figure 7-1. Port A I/O Circuit
DATA DIRECTION
REGISTER BIT
LATCHED OUTPUT
DATA BIT
I/O
PIN
INPUT
REG.
BIT
INPUT
I/O
OUTPUT
INTERNAL
HC05
CONNECTIONS
相關(guān)PDF資料
PDF描述
MC68HC05CC2B 8-BIT, MROM, 4.2 MHz, MICROCONTROLLER, PDIP42
MC68HC05CJ4FB 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP44
MC68HC705CJ4FB 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQFP44
MC68HC05E0FN 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQCC68
MC68HC05E5P 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP28
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC05CT4FB 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:General Release Specification
MC68HC05CT4FN 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:General Release Specification
MC68HC05D9 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:8-bit microcomputer with PWM outputs and LED drive
MC68HC05E0 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:High-density complementary metal oxide semiconductor (HCMOS) microcontroller unit
MC68HC05E0FN 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*