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參數(shù)資料
| 型號： | 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級灰度的點(diǎn)陣圖形液晶顯示驅(qū)動(dòng)程序） |
| 文件頁數(shù)： | 46/46頁 |
| 文件大?。?/td> | 201K |
| 代理商： | HD66421TB0 |
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Preliminary
Rev. 1.1E '99.02.10
HD66421
AC Characteristics
(Vcc = 2.2 to 5.5V, GND = 0V, Ta = -40 to +85°C
Note 1
)
Clock Characteristics
Item
Oscillation frequency
External clock frequency
External clock duty cycle
External clock fall time
External clock rise time
Symbol
f
OSC
f
CP
Duty
tr
tf
Min
160
50
45
–
–
Typ
220
Max
280
400
55
0.2
0.2
Unit
kHz
kHz
%
μ
s
μ
s
Notes
Rf = 180k
, Vcc = 3.0V
50
–
–
MPU Interface
Item
RD low-level width
Symbol
t
WRDL
Min
250
190
Typ
–
–
Max
Unit
ns
ns
Notes
Vcc = 2.2V to 3.0V, 2
Vcc = 3.0V to 5.5V, 2
RD high-level width
WR low-level width
t
WRDH
t
WWRL
450
250
–
–
–
ns
ns
190
450
20
20
–
–
–
–
–
–
ns
ns
ns
ns
ns
WR high-level width
Address setup time
Address hold time
Data delay time
t
WWRH
t
AS
t
AH
t
DDR
–
–
–
–
20
150
100
–
–
–
–
180
150
ns
ns
ns
ns
Data output hold time
Data setup time
t
DHR
t
DSW
–
–
–
Data hold time
t
DHW
10
–
–
ns
Reset Timing
Item
RES low-level width
Note 1 All electrical characteristic are guaranteed at +85°C for die products.
Note 2 tOSC = 1 / fOSC
Symbol
t
RES
Min
1
Typ
–
Max
–
Unit
ms
Notes
46
–
Vcc = 2.2V to 3.0V, 2
Vcc = 3.0V to 5.5V, 2
Vcc = 2.2V to 3.0V
Vcc = 3.0V to 5.5V
Vcc = 2.2V to 3.0V
Vcc = 3.0V to 5.5V
Figure 44 MPU Interface
Notes. The following load circuit is connected for specification.
VOH and VOL of the timing specification is 1/2 VCC level.
Output terminal
30pF(includes board capacitance)
t
WRDL
t
WRDH
t
WWRL
t
WWRH
t
AS
t
AH
t
DDR
t
DHR
t
DSW
t
DHW
t
AS
t
AH
RD
WR
RS,CS
DB7-
DB0
4tOSC - 450
4tOSC - 450
4tOSC - 450
4tOSC - 450
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