vrs51c1000 Ramtron Corporation, vrs51c1000 Datasheet - Page 38

• Manufacturer Part Number: vrs51c1000
• Description: Versa 8051 Mcu With 64kb Of Iap/isp Flash
• Manufacturer: Ramtron Corporation

AC Characteristics
T
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ABLE
Symbol
T LHLL
T AVLL
T LLAX
T LLIV
T LLPL
T PLPH
T PLIV
T PXIX
T PXIZ
T AVI V
T PLAZ
T RLRH
T WLWH
T RLDV
T RHDX
T RHDZ
T LLDV
T AVDV
T LLYL
T AVYL
T QVWH
T QVWX
T WHQX
T RLAZ
T YALH
T CHCL
T CLCX
T CLCH
T CHCX
T , T C LCL
VRS51C1000
48: AC C
HARACTERISTICS
Parameter
ALE Pulse Width
Address Valid to ALE Low
Address Hold after ALE Low
ALE Low to Valid Instruction In
ALE Low to #PSEN low
#PSEN Pulse Width
#PSEN Low to Valid Instruction In
Instruction Hold after #PSEN
Instruction Float after #PSEN
Address to Valid Instruction In
#PSEN Low to Address Float
#RD Pulse Width
#WR Pulse Width
#RD Low to Valid Data In
Data Hold after #RD
Data Float after #RD
ALE Low to Valid Data In
Address to Valid Data In
ALE low to #WR High or #RD Low
Address Valid to #WR or #RD Low
Data Valid to #WR High
Data Valid to #WR Transition
Data Hold after #WR
#RD Low to Address Float
#W R or #RD High to ALE High
Clock Fall Time
Clock Low Time
Clock Rise Time
Clock High Time
Clock Period
RD/WRT
RD
RD
RD
RD
RD
RD
RD
WRT
RD
RD
RD/WRT
WRT
Valid
Cycle
RD/WRT
RD/WRT
RD
RD
RD
RD
RD
RD/WRT
WRT
WRT
RD
RD/WRT
Min.
115
53
53
173
0
365
365
178
230
403
38
73
53
43
0
63
Type
Fosc 16
Max.
240
177
87
292
10
302
145
590
542
197
72
0
Min.
2xT - 10
T - 20
T - 10
T - 10
3xT - 15
6xT - 10
6xT - 10
0
3xT - 10
4xT - 20
7xT - 35
T - 25
T + 10
T -10
Variable Fosc
Type
1/fosc
page 38 of 48
Max.
4xT - 10
3xT -10
5xT - 20
10
2xT + 20
9xT - 20
3xT + 10
5
T+10
T + 25
5xT - 10
8xT - 10
Unit
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS