Datasheet
NT7603
10 V2.3
Timing Waveforms
Read Operation
RS
R/W
E
DB0 ~ DB7
V
IH1
V
IL1
t
RE
t
RD
V
OH1
V
OL1
VAILD DATA
V
IH1
V
IL1
t
AS
V
IH1
V
IL1
t
AH
t
WHE
t
FE
V
IL1
t
DHR
V
OH1
V
OL1
t
CYCE
V
IL1
Figure 1. Bus Read Operation Sequence
(Reading out data from NT7603 to 8-bit MPU)
Write Operation
RS
R/W
E
DB0 ~ DB7
V
IH1
V
IL1
t
RE
t
DS
V
IH1
V
IL1
VAILD DATA
V
IH1
V
IL1
t
AS
V
IH1
V
IL1
t
AH
t
WHE
t
FE
V
IL1
t
DHW
V
IH1
V
IL1
t
CYCE
V
IL1
V
IL1
Figure 2. Bus Write Operation Sequence
(Writing data from 8-bit MPU to NT7603)
Interface Signals with Segment Driver LSI
V
DD
0.2V
t
RON
4.5V
0.1ms >
t
RON
> 10ms
t
OFF
0.2V
0.2V
t
OFF
> 1ms
Figure 3. t
OFF stipulates the time of power OFF for instantaneous
Power supply to or when power supply repeats ON and OFF