參數(shù)資料
型號： HMS81C4316
英文描述： [TV : OSD/ I?C]
中文描述： [電視：OSD /我？?]
文件頁數(shù)： 33/94頁
文件大?。?/td> 1652K
代理商： HMS81C4316
HMS8132E/HMS81032TL
Nov. 2001 Ver 2.00
29
9. I/O PORTS
The HMS81004E/08E/16E/24E/32E has 24 I/O ports
which are PORT0(8 I/O), PORT1 (8 I/O), PORT2 (8 I/O).
Pull-up resistor of each port can be selectable by program.
Each port contains data direction register which controls I/
O and data register which stores port data.
9.1 R0 Ports
R0 is an 8-bit CMOS bidirectional I/O port (address
0C0
H
). Each I/O pin can independently used as an input or
an output through the R0DD register (address 0C1
H
).
R0 has internal pull-ups that is independently connected or
disconnected by R0PC. The control registers for R0 are
shown below.
(1) R0 I/O Data Direction Register (R0DD)
R0 I/O Data Direction Register (R0DD) is 8-bit register,
and can assign input state or output state to each bit. If
R0DD is “1”, port R0 is in the output state, and if “0”, it is
in the input state. R0DD is write-only register. Since
R0DD is initialized as “00h” in reset state, the whole port
R0 becomes input state.
(2) R0 Data Register (R0)
R0 data register (R0) is 8-bit register to store data of port
R0. When set as the output state by R0DD, and data is writ-
ten in R0, data is output into R0 pin. When set as the input
state, input state of pin is read. The initial value of R0 is un-
known in reset state.
(3) R0 Open drain Assign Register (R0ODC)
R0 Open Drain Assign Register (R0ODC) is 8bit register,
and can assign R0 port as open drain output port each bit,
if corresponding port is selected as output. If R0ODC is se-
lected as “1”, port R0 is open drain output, and if selected
as, “0” it is push-pull output. R0ODC is write-only register
and initialized as “00h” in reset state.
(4) R0 Pull-up Control Register (R0PC)
R0 Pull-up Control Register (R0PC) is 8-bit register and
can control pull-up on or off each bit, if corresponding port
is selected as input. If R0PC is selected as “1”, pull-up is
disabled and if selected as “0”, it is enabled. R0PC is write-
only register and initialized as “00h” in reset state. The
pull-up is automatically disabled, if corresponding port is
selected as output.
9.2 R1 Ports
R1 is an 8-bit CMOS bidirectional I/O port (address
0C2
H
). Each I/O pin can independently used as an input or
an output through the R1DD register (address 0C3
H
).
R1 has internal pull-ups that is independently connected or
disconnected by register R1PC. The control registers for
R1 are shown below.
R0 Data Register (R/W)
R0
ADDRESS: 0C0
RESET VALUE: Undefined
R07 R06 R05 R04 R03 R02 R01 R00
Port Direction
0: Input
1: Output
R0 Direction Register (W)
R0DD
ADDRESS: 0C1
RESET VALUE: 00
H
Pull-up select
1: Without pull-up
0: With pull-up
R0 Pull-up Control Register (W)
R0PC
ADDRESS:0F8
RESET VALUE: 00
H
Open drain select
0: Push-pull
1: Open drain
R0 Open drain Assign Register (W)
R0ODC
ADDRESS:0E4
RESET VALUE: 00
H
相關(guān)PDF資料
PDF描述
HMS81C4324 [TV : OSD/ I?C]
HMS81C4332 [TV : OSD/ I?C]
HMS81C5216 REMOTE CONTROLLER
HMS87C5216 REMOTE CONTROLLER
HMS81C4460 HYNIX SEMICONDUCTOR INC. 8-BIT SINGLE-CHIP MICROCONTROLLERS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HMS81C4324 制造商:未知廠家 制造商全稱:未知廠家 功能描述:[TV : OSD/ I?C]
HMS81C4332 制造商:未知廠家 制造商全稱:未知廠家 功能描述:[TV : OSD/ I?C]
HMS81C4360 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:HYNIX SEMICONDUCTOR INC. 8-BIT SINGLE-CHIP MICROCONTROLLERS
HMS81C4360SK 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:HYNIX SEMICONDUCTOR INC. 8-BIT SINGLE-CHIP MICROCONTROLLERS
HMS81C43XX 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER FOR TELEVISION
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*