參數(shù)資料
型號(hào)： UPD7225
廠商： NEC Corp.
英文描述： PROGRAMMABLE LCD CONTROLLER/DRIVER
中文描述： 可編程LCD控制器/驅(qū)動(dòng)
文件頁數(shù)： 40/52頁
文件大?。?/td> 289K
代理商： UPD7225
Data Sheet S14308EJ6V0DS00
40
μ
PD7225
AC Characteristics (T
A
= 0 to +70
°
C, V
DD
= 2.7 V to 5.5 V)
Item
Symbol
Condition
MIN.
TYP.
MAX.
Unit
Operating frequency
f
C
50
140
kHz
Oscillation frequency
f
OSC
R = 180 k
±
5%, V
DD
= 3 V
±
10 %
50
100
140
kHz
High level clock pulse width
t
WHC
CL1, external clock
3
16
μ
s
Low level clock pulse width
t
WLC
CL1, external clock
3
16
μ
s
/SCK frequency
t
CYK
4
μ
s
High level /SCK pulse width
t
WHK
1.8
μ
s
Low level /SCK pulse width
t
WLK
1.8
μ
s
/BUSY
↑→
/SCK hold time
t
HBK
0
ns
SI set time (against /SCK
↑
)
t
SIK
1
μ
s
SI hold time (against /SCK
↑
)
t
HKI
1
μ
s
8th pulse of /SCK
↑→
/BUSY
↓
delay time
t
DKB
C
L
= 50 pF
5
μ
s
/CS
↓→
/BUSY
↓
delay time
t
DCSB
C
L
= 50 pF
5
μ
s
/BUSY low level time
t
WLB
t
WHCS
≥
48/f
C
Note 1
C
L
= 50 pF
4
44 (57)
Note 2
1/f
C
C, /D set time (against 8th pulse
of SCK
↑
)
t
SDK
18
μ
s
C, /D hold time (against 8th pulse
of SCK
↑
)
t
HKD
1
μ
s
/CS hold time (against 8th pulse of
SCK
↑
)
t
HKCS
1
μ
s
High level /CS pulse width
t
WHCS
Note 3
μ
s
Low level /CS pulse width
t
WLCS
Note 3
μ
s
/SYNC load capacitance
C
LSY
t
CYC
= 7.1
μ
s
50
pF
Notes 1.
UNSYNCHRONIZED TRANSFER MOD
For SYNCHRONIZED TRANSFER MODE,
t
WHCS
≥
(48/f
C
+ AC driver frequency)
2.
BLINKING ON
3.
8/fc
AC Timing Measurement Voltage
Measurement
points
0.7V
DD
0.3V
DD
0.7V
DD
0.3V
DD
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