參數(shù)資料
型號: HD66732
廠商: Hitachi,Ltd.
英文描述: Graphics Liquid Crystal Display Controller/Driver Supporting JIS Level-1 and Level-2 Kanji ROM(圖形LCD控制器/驅動器)
中文描述: 圖形液晶顯示控制器/驅動器支持日標級- 1和第2級漢字光盤(圖形液晶顯示控制器/驅動器)
文件頁數(shù): 67/133頁
文件大小: 2608K
代理商: HD66732
HD66732
67
Table 43
Key Scan Cycles for Each Operating Frequency
KF1
KF0
Key Scan Pulse Width
Key Scan Cycle
0
0
0.26 ms
1.1 ms (64 clock cycles)
0
1
0.5 ms
2.1 ms (128 clock cycles)
1
0
1.1 ms
4.3 ms (256 clock cycles)
1
Note:
1
2.1 ms
8.5 ms (512 clock cycles)
The data is a value obtained when the oscillation frequency (fosc) is 60 kHz. The value depends on
the oscillation frequency.
4.3 ms
1.1 ms
KST0
Key scan cycle
KST1
KST2
KST3
Figure 26 Key Strobe Output Timing (KF1/0 = 10, fcp/fosc = 60 kHz)
Key matrix
HD66732
Key state fetch
Key strobe
Detail
KIN5
KIN4
KIN3
KIN2
KIN1
KIN0
KST0
KST1
KST2
KST3
D
30
D
31
D
32
D
33
D
34
D
35
D
20
D
21
D
22
D
23
D
24
D
25
D
10
D
11
D
12
D
13
D
14
D
15
D
00
D
01
D
02
D
03
D
04
D
05
KIN6
D
36
D
26
D
16
D
06
KIN7
D
37
D
27
D
17
D
07
Figure 27 Key Scan Configuration
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