參數(shù)資料
型號(hào)： UPD6529C
英文描述： Consumer IC
中文描述： 消費(fèi)性IC
文件頁(yè)數(shù)： 15/64頁(yè)
文件大?。?/td> 399K
代理商： UPD6529C
15
μ
PD64A, 65
Data Sheet U14380EJ2V0DS00
3.1 K
I/O
Port (P0)
The K
I/O
port is an 8-bit input/output port for key scan output.
INPUT/OUTPUT mode is set by bit 1 of the P4 register.
If a read instruction is executed, the pin state can be read in INPUT mode, whereas the output latch contents
can be read in OUTPUT mode.
If the write instruction is executed, data can be written to the output latch regardless of INPUT or OUTPUT mode.
When reset, the port is placed in OUTPUT mode; and the value of the output latch (P0) becomes 1111 1111B.
The K
I/O
port contains the pull-down resistor, allowing pull-down in INPUT mode only.
Caution During double pressing of a key, a high-level output and a low-level output may coincide with
each other at the K
I/O
port. To avoid this, the low-level output current of the K
I/O
port is held
low. Therefore, be careful when using the K
I/O
port for purposes other than key scan output.
The K
I/O
port is so designed that, even when connected directly to V
DD
within the normal supply
voltage range (V
DD
= 2.0 to 3.6 V), no problem may occur.
Table 3-2. K
I/O
Port (P0)
Bit
b
7
b
6
b
5
b
4
b
3
b
2
b
1
b
0
Name
K
I/O7
K
I/O6
K
I/O5
K
I/O4
K
I/O3
K
I/O2
K
I/O1
K
I/O0
b
0
-b
7
: In reading : In INPUT mode, the K
I/O
pin’s state is read.
In OUTPUT mode, the K
I/O
pin’s output latch contents are read.
In writing
: Data is written to the K
I/O
pin’s output latch regardless of INPUT or OUTPUT mode.
相關(guān)PDF資料
PDF描述
UPD65301 CMOS-10HD Family Pamphlet | Pamphlet[07/2003]
UPD65343 CMOS Gate Array.Embedded Array Ver.2.0 for Package | Design Manual[05/2003]
UPD65344 CMOS-10HD Family Pamphlet | Pamphlet[07/2003]
UPD65345 CMOS Gate Array.Embedded Array Ver.2.0 for Package | Design Manual[05/2003]
UPD65346 CMOS-10HD Family Pamphlet | Pamphlet[07/2003]
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UPD652C 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Microcontroller
UPD65301 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:CMOS-10HD Family Pamphlet | Pamphlet[07/2003]
UPD65302 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:CMOS Gate Array.Embedded Array Ver.2.0 for Package | Design Manual[05/2003]
UPD65303 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:CMOS-10HD Family Pamphlet | Pamphlet[07/2003]
UPD65304 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:CMOS Gate Array.Embedded Array Ver.2.0 for Package | Design Manual[05/2003]
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 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*