DS80C310_1 Datasheet, PDF (14/21 Pages) Dallas Semiconductor – High-Speed Micro

DS80C310
EXTERNAL CLOCK CHARACTERISTICS
PARAMETER
SYMBOL MIN
TYP
Clock High Time
Clock Low Time
Clock Rise Time
Clock Fall Time
t_CHCX
10
t_CLCX
10
t_CLCL
t_CHCL
SERIAL PORT MODE 0 TIMING CHARACTERISTICS
PARAMETER
SYMBOL MIN
TYP
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
t_XLXL
t_QVXH
t_XHQX
t_XHDX
12t_CLCL
4t_CLCL
10t_CLCL
3t_CLCL
2t_CLCL
t_CLCL
t_CLCL
t_CLCL
Clock Rising Edge to Input
Data Valid
SM2=0, 12 clocks per cycle
SM2=1, 4 clocks per cycle
t_XHDV
11t_CLCL
3t_CLCL
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 complete-
ness, the following is an explanation of the symbols.
t
Time
A Address
C Clock
D Input data
H Logic level high
L Logic level low
I
Instruction
P PSEN
Q Output data
R RD signal
V Valid
W WR signal
X No longer a valid logic level
Z Tristate
(0°C to 70°C; V_CC=4.0V to 5.5V)
MAX
UNITS NOTES
ns
ns
5
ns
5
ns
(0°C to 70°C; V_CC=4.0V to 5.5V)
MAX
UNITS NOTES
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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