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DS89C430_07 Datasheet, PDF (4/46 Pages) Dallas Semiconductor – Ultra-High-Speed Flash Microcontrollers
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AC CHARACTERISTICS
(VCC = 4.5V to 5.5V, TO = -40°C to +85°C.) (See Figure 1, Figure 2, and Figure 3.)
PARAMETER
SYMBOL
System Clock External
Oscillator (Note 15)
System Clock External Crystal
(Note 15)
1/tCLCL
1/tCLCL
1-CYCLE
PAGE MODE 1
MIN
MAX
0
33
1
33
2-CYCLE
PAGE MODE 1
MIN
MAX
0
33
1
33
4-CYCLE
PAGE MODE 1
MIN
MAX
0
33
1
33
ALE Pulse Width (Note 16)
tLHLL
0.5tCLCL - 2
+ tSTC3
tCLCL - 2
+ tSTC3
2tCLCL - 4
+ tSTC3
Port 0 Instruction Address Valid
to ALE Low
tAVLL
Port 2 Instruction Address Valid
to ALE Low
tAVLL2
0.5tCLCL - 4
0.5tCLCL - 4
1.5tCLCL - 4
Port 0 Data AddressValid to
ALE Low
tAVLL3
Program Address Hold After
ALE Low
tLLAX
0.5tCLCL - 8
1.5tCLCL - 8
2.5tCLCL - 8
Address Hold after ALE Low
MOVX Write
tLLAX2
0.5tCLCL - 8
+ tSTC4
1.5tCLCL - 8
+ tSTC4
2.5tCLCL - 8
+ tSTC3
Address Hold after ALE Low
MOVX Read
tLLAX3
0.5tCLCL - 8
+ tSTC4
1.5tCLCL - 8
+ tSTC4
2.5tCLCL - 8
+ tSTC3
ALE Low to Valid Instruction In
tLLIV
DS89C430/DS89C450
PAGE MODE 2
MIN
MAX
0
33
1
33
1.5tCLCL - 5
+ tSTC3
tCLCL - 3
NONPAGE MODE
MIN
MAX
0
33
1
33
1.5tCLCL - 5
+ tSTC3
0.5tCLCL - 3
UNITS
MHz
ns
ns
0.5tCLCL - 4
tCLCL - 4
ns
tCLCL - 3 +
0.5tCLCL - 3
ns
tSTC3
+ tSTC3
1tCLCL - 10
1tCLCL - 10
ns
0.5tCLCL - 8
0.5tCLCL - 8
ns
+ tSTC2
+ tSTC2
0.5tCLCL - 8
0.5tCLCL - 8
ns
+ tSTC3
+ tSTC2
2tCLCL - 6
2tCLCL - 6
ns
ALE Low to PSEN Low
tLLPL
1.5tCLCL - 6
0.5tCLCL - 2
ns
PSEN Pulse Width for Program
Fetch
tPLPH
tCLCL - 5
tCLCL - 5
2tCLCL - 5
tCLCL - 5
2tCLCL - 5
ns
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