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DS80C320 Datasheet, PDF (26/42 Pages) Dallas Semiconductor – High-Speed/Low-Power Micro
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DS80C320/DS80C323
DS80C320 MOVX CHARACTERISTICS UP TO 33 MHz
PARAMETER
SYMBOL VARIABLE VARIABLE UNITS STRETCH
CLOCK
CLOCK
MIN
MAX
RD Pulse Width
WR Pulse Width
RD Low to Valid Data In
Data Hold After Read
Data Float After Read
ALE Low to Valid
Data In
Port 0 Address to Valid
Data In
tRLRH
tWLWH
tRLDV
tRHDX
tRHDZ
tLLDV
tAVDV1
2tCLCL-11
tMCS-11
ns
2tCLCL-11
tMCS-11
ns
2tCLCL-25
tMCS-25
ns
0
ns
tCLCL-5
ns
2tCLCL-5
2.5tCLCL-26
1.5tCLCL-28+tMCS
ns
3tCLCL-24
2tCLCL-31+tMCS
ns
tMCS=0
tMCS>0
tMCS=0
tMCS>0
tMCS=0
tMCS>0
tMCS=0
tMCS>0
tMCS=0
tMCS>0
tMCS=0
tMCS>0
Port 2 Address to Valid
Data In
ALE Low to RD or WR
Low
tAVDV2
tLLWL
3.5tCLCL-32
2.5tCLCL-34+tMCS
ns
0.5tCLCL-5
1.5tCLCL-5
0.5tCLCL+6
1.5tCLCL+8
ns
tMCS=0
tMCS>0
tMCS=0
tMCS>0
Port 0 Address Valid to
RD or WR Low
tAVWL1
tCLCL-9
2tCLCL-10
ns
tMCS=0
tMCS>0
Port 2 Address Valid to
RD or WR Low
tAVWL2
1.5tCLCL-9
2.5tCLCL-13
ns
tMCS=0
tMCS>0
Data Valid to
WR Transition
tQVWX
-9
tCLCL-10
ns
tMCS=0
tMCS>0
Data Hold After Write
RD Low to Address Float
tWHQX
tRLAZ
tCLCL-7
2tCLCL-5
note 5
ns
tMCS=0
tMCS>0
ns
RD or WR High to
ALE High
tWHLH
0
tCLCL-5
10
tCLCL+11
ns
tMCS=0
tMCS>0
NOTE: tMCS is a time period related to the Stretch memory cycle selection. The following table shows the
value of tMCS for each Stretch selection.
M2
M1
M0
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
MOVX CYCLES
2 machine cycles
3 machine cycles (default)
4 machine cycles
5 machine cycles
6 machine cycles
7 machine cycles
8 machine cycles
9 machine cycles
tMCS
0
4 tCLCL
8 tCLCL
12 tCLCL
16 tCLCL
20 tCLCL
24 tCLCL
28 tCLCL
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