DS80C310-ECL Dallas Semiconducotr, DS80C310-ECL Datasheet - Page 15

• Manufacturer Part Number: DS80C310-ECL
• Description: High-Speed Micro
• Manufacturer: Dallas Semiconducotr

EXTERNAL CLOCK CHARACTERISTICS
SERIAL PORT MODE 0 TIMING CHARACTERISTICS
EXPLANATION OF AC SYMBOLS
In an effort to remain compatible with the original 8051 family, this device specifies the same parameters
as such devices, using the same symbols. For completeness, the following is an explanation of the
symbols.
t
A
C
D
H
L
I
P
Q
R
V
W
X
Z
PARAMETER
Clock High Time
Clock Low Time
Clock Rise Time
Clock Fall Time
PARAMETER
Serial Port Clock Cycle Time
SM2=0, 12 clocks per cycle
SM2=1, 4 clocks per cycle
Output Data Setup to Clock
Rising
SM2=0, 12 clocks per cycle
SM2=1, 4 clocks per cycle
Output Data Hold from
Clock Rising
SM2=0, 12 clocks per cycle
SM2=1, 4 clocks per cycle
Input Data Hold after Clock
Rising
SM2=0, 12 clocks per cycle
SM2=1, 4 clocks per cycle
Clock Rising Edge to Input
Data Valid
SM2=0, 12 clocks per cycle
SM2=1, 4 clocks per cycle
Time
Address
Clock
Input data
Logic level high
Logic level low
Instruction
Output data
Valid
No longer a valid logic level
Tristate
PSEN
RD
WR
signal
signal
SYMBOL
t
t
t
t
CHCX
CLCX
CHCL
CLCL
SYMBOL
t
t
t
t
t
QVXH
XHQX
XHDX
XHDV
XLXL
MIN
10
10
MIN
15 of 23
TYP
12t
10t
11t
4t
3t
2t
3t
TYP
t
t
t
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
MAX
MAX
5
5
UNITS
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
DS87C520/DS83C520
NOTES
NOTES