參數(shù)資料
型號(hào): HT1621B-48SSOP
英文描述: LCD DISPLAY DRIVER|32-SEG|4-BP|CMOS|SSOP|48PIN|PLASTIC
中文描述: LCD顯示驅(qū)動(dòng)| 32賽格| 4 - BP公司|的CMOS | SSOP封裝| 48PIN |塑料
文件頁(yè)數(shù): 13/15頁(yè)
文件大?。?/td> 144K
代理商: HT1621B-48SSOP
Name
ID
Command Code
D/C
Function
Def.
TONE 4K
1 0 0
010X-XXXX-X
C
Tone frequency output: 4kHz
TONE 2K
1 0 0
0110-XXXX-X
C
Tone frequency output: 2kHz
IRQ DIS
1 0 0
100X-0XXX-X
C
Disable IRQ output
Yes
IRQ EN
1 0 0
100X-1XXX-X
C
Enable IRQ output
F1
1 0 0
101X-0000-X
C
Time base clock output: 1Hz
The WDT time-out flag after: 4s
F2
1 0 0
101X-0001-X
C
Time base clock output: 2Hz
The WDT time-out flag after: 2s
F4
1 0 0
101X-0010-X
C
Time base clock output: 4Hz
The WDT time-out flag after: 1s
F8
1 0 0
101X-0011-X
C
Time base clock output: 8Hz
The WDT time-out flag after: 1/2s
F16
1 0 0
101X-0100-X
C
Time base clock output: 16Hz
The WDT time-out flag after: 1/4s
F32
1 0 0
101X-0101-X
C
Time base clock output: 32Hz
The WDT time-out flag after: 1/8s
F64
1 0 0
101X-0110-X
C
Time base clock output: 64Hz
The WDT time-out flag after: 1/16s
F128
1 0 0
101X-0111-X
C
Time base clock output: 128Hz
The WDT time-out flag after: 1/32s
Yes
TEST
1 0 0
1110-0000-X
C
Test mode, user don t use.
NORMAL
1 0 0
1110-0011-X
C
Normal mode
Yes
Note:
X : Don t care
A6~A0 : RAM address
D3~D0 : RAM data
D/C : Data/Command mode
Def. : Power on reset default
All the bold forms, namely
1 1 0
,
1 0 1
, and
1 0 0
, are mode commands. Of these,
1 0 0
indicates the command
mode ID. If successive commands have been issued, the command mode ID except for the first command will
beomitted.ThesourceofthetonefrequencyandofthetimebaseorWDTclockfrequencycanbederivedfrom
an on-chip 32kHz RC oscillator, a 32.768kHz crystal oscillator, or an external 32kHz clock. Calculation of the
frequency is based on the system frequency sources as stated above. It is recommended that the host control-
ler should initialize the HT1625 after power on reset, for power on reset may fail, which in turn leads to the mal-
functioning of the HT1625.
HT1625
Rev. 1.10
13
September 11, 2002
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