參數(shù)資料
型號(hào)： HC05J5GRS
英文描述： 68HC05J5 General Release Specification
中文描述： 68HC05J5一般版本規(guī)范
文件頁(yè)數(shù)： 51/106頁(yè)
文件大?。?/td> 1366K
代理商： HC05J5GRS
July 16, 1999
GENERAL RELEASE SPECIFICATION
MC68HC05J5A
REV 2.1
INPUT/OUTPUT PORTS
MOTOROLA
7-7
If the corresponding bit in the pulldown/up register is clear (and the pulldown/up
mask option is chosen) the input pin will also have an activated pulldown/up
device. Since the pulldown/up register bits are write-only, bit manipulation should
not be used on these register bits.
7.4.4 I/O Pin Transitions
A "glitch" can be generated on an I/O pin when changing it from an input to an out-
put unless the data register is first preconditioned to the desired state before
changing the corresponding DDR bit from a zero to a one.
If pulldowns are enabled by mask option, a floating input can be avoided by clear-
ing the pulldown/up register bit before changing the corresponding DDR from a
one to a zero. This will insure that the pulldown device will be activated before the
I/O pin changes from a driven output to a pulled low/high input.
7.4.5 I/O Pin Truth Tables
Every pin on Port A and Port B may be programmed as an input or an output
under software control as shown in
Table 7-1
and
Table 7-2
. All port I/O pins may
also have software programmable pulldown/up devices if selected by the appropri-
ate mask option.
Table 7-1. Port A I/O Pin Functions
Table 7-2. Port B I/O Pin Functions
Accesses to
PDURA
at $0010
Accesses to
Data Register
@ $0000
0
1
IN, Hi-Z
OUT
PDURA0-7
PDURA0-7
DDRA0-7
DDRA0-7
I/O Pin
PA0-7
*
PA0-7
U
U
I/O Pin Mode
DDRA
Read/Write
Accesses
to DDRA
@ $0004
Read
Write
Read
Write
* Does not affect input,
but stored to data register
U is undefined
Accesses to
PDURB
at $0011
Accesses to
Data Register
@ $0001
0
1
IN, Hi-Z
OUT
PDURB0-2
PDURB0-2
DDRB0-2
DDRB0-2
I/O Pin
PB0-5
*
PB0-5
U
U
I/O Pin Mode
DDRA
Read/Write
Accesses
to DDRB
@ $0005
Read
Write
Read
Write
* Does not affect input,
but stored to data register
U is undefined
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
相關(guān)PDF資料
PDF描述
HC05JB3GRS 68HC05JB3 and 68HC705JB3 General Release Specification
HC05JB4GRS 68HC(7)05JB4 General Release Specification
HC05JJ6GRS 68HC05JJ6 and 68HC05JP6 General Release Specification
HC05K3GRS 68HC05K3 General Release Specification
HC05PL4GRS 68HC05PL4A. 68HC05PL4B. 68HC705PL4B General Release Specification
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HC05JB3GRS 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:68HC05JB3 and 68HC705JB3 General Release Specification
HC05JB4GRS 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:68HC(7)05JB4 General Release Specification
HC05JJ6GRS 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:68HC05JJ6 and 68HC05JP6 General Release Specification
HC05K3GRS 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:68HC05K3 General Release Specification
HC05PL4GRS 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:68HC05PL4A. 68HC05PL4B. 68HC705PL4B General Release Specification
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(xiě)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(chǎng)商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*