User`s manual

CBM-202PC User’s Manual
30
CITIZEN
Bus Timing
VCC＝5.0V±10%, AVCC＝5.0V±10%, VF＝4.5V∼AVCC,
VSS＝AVSS＝0V, φ2∼16MHz, TA＝−20∼＋75℃
ITEM SYMBOL MIN MAX
Clock cycle time tcyc 62.5 500
Clock pulse width "LOW" level time t
CL
20
−
Clock pulse width "HIGH" level time t
CH
20
−
Clock rise time t
CR
−
10
Clock breaking time t
CF
−
10
Address delay time t
AD
−
30
Address hold time t
AH
10
−
Address strobe delay time t
ASD
−
30
Write strobe delay time t
WSD
−
30
Strobe delay time t
SD
−
30
Write data strobe pulse width 1 t
WSW1
35
−
Write data strobe pulse width 2 t
WSW2
65
−
Address setup time 1 t
AS1
10
−
Address setup time 2 t
AS2
40
−
Read data setup time t
RDS
20
−
Read data hold time t
RDH
0
−
Write data delay time t
WDD
−
60
Write data setup time 1 t
WDS1
35
−
Write data setup time 2 t
WDS2
5
−
Write data hold time t
WDH
20
−
Read data access time 1 t
ACC1
−
55
Read data access time 2 t
ACC2
−
115
Unit: ns