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參數資料
| 型號： | ht1621b |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | RAM Mapping 324 LCD Controller for I/O MCU |
| 中文描述： | 內存映射32 4 LCD控制器的I / O控制器 |
| 文件頁數： | 13/20頁 |
| 文件大?。?/td> | 179K |
| 代理商： | HT1621B |
HT1621
Rev. 1.30
13
August 6, 2003
Name
ID
Command Code
D/C
Function
Def.
RC 256K
1 0 0
0001-10XX-X
C
Systemclocksource,on-chipRCoscillator
Yes
EXT 256K
1 0 0
0001-11XX-X
C
Systemclocksource,externalclocksource
BIAS 1/2
1 0 0
0010-abX0-X
C
LCD 1/2 bias option
ab=00: 2 commons option
ab=01: 3 commons option
ab=10: 4 commons option
BIAS 1/3
1 0 0
0010-abX1-X
C
LCD 1/3 bias option
ab=00: 2 commons option
ab=01: 3 commons option
ab=10: 4 commons option
TONE 4K
1 0 0
010X-XXXX-X
C
Tone frequency, 4kHz
TONE 2K
1 0 0
011X-XXXX-X
C
Tone frequency, 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-X000-X
C
Time base/WDT clock output:1Hz
The WDT time-out flag after: 4s
F2
1 0 0
101X-X001-X
C
Time base/WDT clock output:2Hz
The WDT time-out flag after: 2s
F4
1 0 0
101X-X010-X
C
Time base/WDT clock output:4Hz
The WDT time-out flag after: 1s
F8
1 0 0
101X-X011-X
C
Time base/WDT clock output:8Hz
The WDT time-out flag after: 1/2s
F16
1 0 0
101X-X100-X
C
Time base/WDT clock output:16Hz
The WDT time-out flag after: 1/4s
F32
1 0 0
101X-X101-X
C
Time base/WDT clock output:32Hz
The WDT time-out flag after: 1/8s
F64
1 0 0
101X-X110-X
C
Time base/WDT clock output:64Hz
The WDT time-out flag after: 1/16s
F128
1 0 0
101X-X111-X
C
Time base/WDT 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
A5~A0 : RAM addresses
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
be omitted. The source of the tone frequency and of the time base/WDT clock frequency can be derived from
an on-chip 256kHz RC oscillator, a 32.768kHz crystal oscillator, or an external 256kHz 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 HT1621 after power on reset, for power on reset may fail, which in turn leads to the mal-
functioning of the HT1621.
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| HT1621 | RAM Mapping 32 x 4 LCD Controller for I/O μC(存儲器映射、用于I/O接口微機的32 x 4模式LCD控制器) |
| HT16220 | RAM Mapping 32 x 8 LCD Controller for I/O μC(存儲器映射、用于I/O接口微機的32 x 8模式LCD控制器) |
| HT1622 | RAM Mapping 32 x 8 LCD Controller for I/O μC(存儲器映射、用于I/O接口微機的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 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| HT1621B(48PDIP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver |
| HT1621B(48SSOP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver |
| HT1621B-48DIPLF | 制造商:Holtek Semiconductor Inc 功能描述:DRIVER RAM MAPPING LCD CONT SMD |
| HT1621B-48SSOP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD DISPLAY DRIVER|32-SEG|4-BP|CMOS|SSOP|48PIN|PLASTIC |
| HT1621D | 制造商:HOLIMATE SEMI 功能描述: 制造商:N/A 功能描述: |
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