hd66421 Renesas Electronics Corporation., hd66421 Datasheet - Page 46

• Manufacturer Part Number: hd66421
• Description: Ram-provided 160 Channel 4-level Grey Scale Driver For Dot Matrix Graphics Lcd
• Manufacturer: Renesas Electronics Corporation.

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