參數(shù)資料
型號(hào): ht1621b
廠商: Holtek Semiconductor Inc.
英文描述: RAM Mapping 324 LCD Controller for I/O MCU
中文描述: 內(nèi)存映射32 4 LCD控制器的I / O控制器
文件頁(yè)數(shù): 12/20頁(yè)
文件大小: 179K
代理商: HT1621B
Application Circuits
Host Controller with an HT1621 Display System
Note:
The connection of IRQ and RD pin can be selected depending on the requirement of the MCU.
The voltage applied to V
LCD
pin must be lower than V
DD
.
Adjust VR to fit LCD display, at V
DD
=5V, V
LCD
=4V, VR=15k
20%.
Adjust R (external pull-high resistance) to fit user’s time base clock.
Command Summary
HT1621
Rev. 1.30
12
August 6, 2003
!
)
@
!
7
$
7 %
$
7 /
# / + , 1 = >
(
(
" B
#
$
" B $
# %
E
>
% /
% #
F % / 4 % #
% .
*
*
*
Name
ID
Command Code
D/C
Function
Def.
READ
1 1 0
A5A4A3A2A1A0D0D1D2D3
D
Read data from the RAM
WRITE
1 0 1
A5A4A3A2A1A0D0D1D2D3
D
Write data to the RAM
READ-MODIFY-
WRITE
1 0 1
A5A4A3A2A1A0D0D1D2D3
D
READ and WRITE to the RAM
SYS DIS
1 0 0
0000-0000-X
C
Turn off both system oscillator and LCD
bias generator
Yes
SYS EN
1 0 0
0000-0001-X
C
Turn on system oscillator
LCD OFF
1 0 0
0000-0010-X
C
Turn off LCD bias generator
Yes
LCD ON
1 0 0
0000-0011-X
C
Turn on LCD bias generator
TIMER DIS
1 0 0
0000-0100-X
C
Disable time base output
WDT DIS
1 0 0
0000-0101-X
C
Disable WDT time-out flag output
TIMER EN
1 0 0
0000-0110-X
C
Enable time base output
WDT EN
1 0 0
0000-0111-X
C
Enable WDT time-out flag output
TONE OFF
1 0 0
0000-1000-X
C
Turn off tone outputs
Yes
TONE ON
1 0 0
0000-1001-X
C
Turn on tone outputs
CLR TIMER
1 0 0
0000-11XX-X
C
Clear the contents of time base generator
CLR WDT
1 0 0
0000-111X-X
C
Clear the contents of WDT stage
XTAL 32K
1 0 0
0001-01XX-X
C
System clock source, crystal oscillator
相關(guān)PDF資料
PDF描述
HT1621 RAM Mapping 32 x 4 LCD Controller for I/O μC(存儲(chǔ)器映射、用于I/O接口微機(jī)的32 x 4模式LCD控制器)
HT16220 RAM Mapping 32 x 8 LCD Controller for I/O μC(存儲(chǔ)器映射、用于I/O接口微機(jī)的32 x 8模式LCD控制器)
HT1622 RAM Mapping 32 x 8 LCD Controller for I/O μC(存儲(chǔ)器映射、用于I/O接口微機(jī)的32 x 8模式LCD控制器)
HT1623 RAM Mapping 48x8 LCD Controller for I/O C
HT1625 RAM Mapping 64x 8 LCD Controller for I/O C
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