DP83934CVUL20 National Semiconductor, DP83934CVUL20 Datasheet - Page 88

• Manufacturer Part Number: DP83934CVUL20
• Manufacturer: National Semiconductor

Specifications of DP83934CVUL20

• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.75V
• Operating Supply Voltage (max): 5.25V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 160
• Lead Free Status / RoHS Status: Not Compliant

9 0 AC and DC Specifications
BUS REQUEST TIMING BMODE
Note 1 BGACK is asserted one bus clock after all the signals (AS DSACK0 1 BGACK STERM (Extended bus mode) and BG) meet the T45a setup time (see
Section 5 4 1 for more information) The address bus AS DS ECS MRW USR
Note 2 S
Number
T45a
T51a
T52
T53
T54
T54a
T54b
T55
T55b
k
2 0
l
will indicate IDLE at the end of T2 if the last operation is a read operation or at the end of Th if the last operation is a write operation
BG AS BGACK DSACK0 1 and STERM Asynchronous
Setup Time to BSCK (Note 1)
BSCK to Address AS MRW DS ECS
USR
BSCK to Data TRI-STATE
BSCK to Address AS MRW DS ECS
USR
BSCK Low to BR Low TRI-STATE
BSCK High to BGACK Low High
High to BGACK TRI-STATE
BSCK to Bus Status Valid
S
k
2 0
k
k
1 0
1 0
l
Hold from BSCK
l
l
and EXUSR
and EXUSR
e
1
Parameter
k
k
3 0
3 0
l
l
TRI-STATE
Active (Note 1)
(Continued)
88
k
1 0
l
and EXUSR
Min
7
3
k
20 MHz
3 0
l
will also be driven active on the same clock
Max
37
34
34
26
24
19
29
Min
6
3
25 MHz
Max
35
32
32
24
22
17
27
TL F 11719 – 69
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns