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參數(shù)資料
| 型號(hào)： | HD66421TB0 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | (RAM-Provided 160 Channel 4-Level Grey Scale Driver for Dot Matrix Graphics LCD) |
| 中文描述： | （內(nèi)存提供160通道4級(jí)灰度的點(diǎn)陣圖形液晶顯示驅(qū)動(dòng)程序） |
| 文件頁(yè)數(shù)： | 15/46頁(yè) |
| 文件大小： | 201K |
| 代理商： | HD66421TB0 |
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Preliminary
Rev. 1.1E '99.02.10
HD66421
Dot-matrix Display
50-channel
row output
160-channel
column output
50-channel
row output
320 x 100
HD66421
(Master)
Multi-LSI Operation
Using multiple HD66421s provides the means for
extending the number of display dots. Note the
following items when using the multi-LSI
operation.
(1) The master LSI and the slave LSI must be
determined; the M/S pin of the master LSI must
be set high and the M/S pin of the slave LSI must
be set low.
2) The master LSI supplies the FLM, M, CL1 and
clock signals to the slave LSI via the
corresponding pins, which synchronizes the slave
LSI with the master LSI.
(3) All control bits of slave LSI must be set with
the same data with that of the master LSI.
Figure 6 Configuration Using Two HD66421s
160-channel
column output
HD66421
(slave)
CL1
FLM
M
CL1
FLM
M
OSC
CO
OSC OSC1
CO OSC1
Open
(4) All LSIs must be set to LCD off in order to
turn off the display.
(5) The standby function of slave LSI must be
started up first, and that of the master LSI must
be terminated first.
(6) The power supply circuit of slave LSI stop
working, so V1 to V5 levels are supplied from
the master LSI. If the internal power supply
circuit can not drive two LSIs, use an external
power supply circuit.
Figure 6 shows the configuration using two
HD66421s and table 2 lists the differences
between master and slave modes.
Table 2 Comparison between Master and Slave Modes
Item
Pin
Master Mode
Must be set high
Oscillation is active
Output
Output signals
Valid
Valid
Valid
Valid
Valid
Slave Mode
Must be set low
Oscillation is active
High-Z
Input signals
Valid
Invalid
Valid
Invalid
Invalid
M/S
OSC
CO
FLM, M, CL1
R0, R2 to R15,R17
R1:BIS1, 0
R1:other
R16
Power supply circuit
Registers
V1O to
V5O
V1O to
V5O
15
M/S
M/S
VCC
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相關(guān)代理商/技術(shù)參數(shù) |
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| HD66503 | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:LCD Display Driver |
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| HD66520TA0 | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:LCD Display Driver |
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