NJU6635 Datasheet, PDF (27/33 Pages) New Japan Radio – 16-CHARACTER 2-LINE DOT MATRIX LCD CONTROLLER DRIVER

NJU6635
s Bus timing characteristics
(V_DD=4.5 to 5.5V, V_SS=0V, Ta=-20 to 75°C)
• Write operation sequence (write from MPU to NJU6635)
PARAMETER
SYMBOL MIN
Enable Cycle Time
Enable Pulse “High” level
Width
Low” level
Enable Rise Time, Fall Time
Set up Time RS, R/W-E
Address Hold Time
Data Set up Time
Data Hold Time
t_CYCE
500
PW_EH
220
PW_EL
280
t_Er, t_Ef
–
t_AS
40
t_AH
10
t_DSW
60
t_H
10
MAX
–
–
–
20
–
–
–
–
UNIT
CONDITION
ns
Fig.1
RS
R/W
E
DB₀ – DB₇
VIH
VIL
tAS
VIL
VIH
VIL
tAH
VIL
PWEH
tAH
VIL
VIH
tEf _PWEL
VIH
VIL
VIL
tEr
tDSW
tH
VIH
VIH
Data
VIL
VIL
tCYCE
Fig.1 The timing characteristics of the bus write operating sequence.(Write from MPU to NJU6635)
• Read operation sequence ( Read from NJU6635 to MPU)
PARAMETER
SYMBOL MIN
Enable Cycle Time
Enable Pulse “High” level
Time
Low” level
Enable Rise Time, Fall Time
Set up Time RS, R/W-E
Address Hold Time
Data Delay Time
Data Hold Time
t_CYCE
500
PW_EH
220
PW_EL
280
t_Er, t_Ef
–
t_AS
40
t_AH
10
t_DDR
–
t_DHR
20
MAX
–
–
–
20
–
–
240
–
UNIT
ns
RS
R/W
E
DB₀ – DB₇
VIH
VIL
tAS
VIH
VIL
tAH
VIH
VIH
PWEH
tAH
VIL
VIH
VIH
tEf _PWEL
VIL
VIL
tEr
tDDR
tDHR
VOH
VOH
Data
VOL
VOL
CONDITION
Fig.2
tCYCE
Fig.2 The timing characteristics of the bus write operating sequence.(Write from NJU6635 to MPU)