參數(shù)資料
型號: HD66725
廠商: Hitachi,Ltd.
英文描述: Graphics LCD Controller/Driver with Key Scan Function(帶鍵掃描功能的圖形LCD控制器/驅(qū)動器)
中文描述: 圖形液晶顯示控制器/鍵掃描功能(帶鍵掃描功能的圖形液晶顯示控制器/驅(qū)動器驅(qū)動程序)
文件頁數(shù): 61/117頁
文件大小: 834K
代理商: HD66725
HD66724/HD66725
61
The key scan data can be read by an MPU via a serial interface. First, a start byte should be transferred.
After the HD66724/HD66725 have received the start byte, the MPU reads scan data KSD7 to KSD0 from
the SCAN0 register starting from the MSB. Similarly, the MPU reads the data from SCAN1, SCAN2 and
SCAN3 in that order. After reading SCAN3, the MPU starts reading at SCAN0 again.
The HD66724/HD66725 may be read out while they are latching scan data and are thus unstable.
Consequently, they should also be reconfirmed with software if required.
Write a dummy instruction ("00H") before reading the key scan data.
b) Consecutive Scan Data Read Timing
a) Scan Data Read Timing through Clock-synchronized Serial Bus Interface
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
0
1
0
1
1
1
0
ID
Start byte
Device ID code
SCL
(Input)
SDA
(Input/
output)
CS*
(Input)
Wait
Start
byte
SCL
(Input)
SDA
(Input/
output)
SCAN0
data
SCAN1
data
SCAN2
data
SCAN3
data
SCAN0
data
Wait
Wait
Wait
SCAN0 data transmission
KSD7 KSD6 KSD5 KSD4 KSD3 KSD2 KSD1 KSD0
R/W
RS
Transfer start
Transfer end
Figure 29 Scan Data Serial Transfer Timing
相關(guān)PDF資料
PDF描述
HD66726 Graphics LCD Controller/Driver with Key Scan Function(帶鍵掃描功能的圖形LCD控制器/驅(qū)動器)
HD66727 Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function(帶鍵掃描功能的圖形LCD控制器/驅(qū)動器)
HD66728 112 x 80-dot Graphics LCD Controller/Driver(112 x 80點圖形LCD控制器)
HD66730 Dot-Matrix Liquid Crystal Display Controller/Driver(點陣液晶顯示控制器/驅(qū)動器)
HD66731 Dot-Matrix Liquid Crystal Display Controller/Driver(點陣液晶顯示控制器/驅(qū)動器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD66725A03TA0L 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD CONTROLLER
HD66726 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions
HD66726A03TB0L 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Industrial Control IC
HD66727 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function
HD66727A03 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver