HD66420 Datasheet, PDF (51/52 Pages) Hitachi Semiconductor – (RAM-Provided 160 Channel 4-Level Grey Scale Driver for Dot Matrix Graphics LCD)

AC Characteristics (V_CC = 2.2V to 5.5V, GND = 0V, Ta = –40 to +85°C)^*
HD66420
Clock Characteristics
Item
Symbol Min
Typ
Max
Unit
Notes
Oscillation frequency f_OSC
External clock
f _CP
frequency
130
180
230
kHz
Rf = 240 kΩ, V_CC = 3.0 V
50
—
400
kHz
External clock duty
Duty
45
50
55
%
cycle
External clock fall time t_r
External clock rise time t_f
—
—
0.2
µs
—
—
0.2
µs
Reset Timing
Item
Symbol Min
Typ
Max
Unit
Notes
RES low-level width t_RES
1
—
—
ms
Note: Specified at +75°C for die products.
MPU Interface
Item
Symbol Min
Typ
Max
Unit
Notes
RD low-level width
t _WRDL
RD high-level width
WR low-level width
t _WRDH
t _WWRL
WR high-level width
Address setup time
Address hold time
Data delay time
t _WWRH
t _AS
t _AH
t _DDR
Data output hold time t_DHR
Data setup time
t _DSW
Data hold time
t _DHW
250
—
190
—
450
—
250
—
190
—
450
—
10
—
10
—
—
—
—
—
10
—
150
—
100
—
10
—
—
ns
V_CC = 2.2 V to 3.0 V
—
kHz
V_CC = 3.0 V to 5.5 V
—
ns
—
ns
V_CC = 2.2 V to 3.0 V
—
ns
V_CC = 3.0 V to 5.5 V
—
ns
—
ns
—
ns
180
ns
150
ns
—
ns
V_CC = 2.2 V to 3.0 V
V_CC = 3.0 V to 5.5 V
—
ns
V_CC = 2.2 V to 3.0 V
—
µs
V_CC = 3.0 V to 5.5 V
—
ns
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