DS89C430 Datasheet, PDF (6/48 Pages) Dallas Semiconductor – Ultra-High-Speed Flash Microcontrollers

DS89C430/DS89C440/DS89C450 Ultra-High-Speed Flash Microcontrollers
AC CHARACTERISTICS (continued)
(V_CC = 4.5V to 5.5V, T_O = -40∞C to +85∞C.) (See Figure 1, Figure 2, and Figure 3.)
PARAMETER
SYMBOL
1-CYCLE
PAGE MODE 1
MIN
MAX
2-CYCLE
PAGE MODE 1
MIN
MAX
4-CYCLE
PAGE MODE 1
MIN
MAX
Port 0 Address to Valid Data
In (Note 16)
tAVDV0
PAGE MODE 2
MIN
MAX
3tCLCL - 20
+ tSTC1
NONPAGE MODE
MIN
MAX
3tCLCL - 20
+ tSTC1
UNITS
ns
Port 2 Address to Valid Data
In (Note 16)
tAVDV2
tCLCL - 20
+ tSTC1
1.5tCLCL -
20 + tSTC1
3.5tCLCL -
20 + tSTC1
3.0tCLCL - 20
+ tSTC1
3.5tCLCL -
ns
20 + tSTC1
ALE Low to RD or WR Low
(Note 16)
tLLRL
0.5tCLCL - 8 + 0.5tCLCL + 2tCLCL - 8 2tCLCL + 6 4tCLCL - 8 4tCLCL + 6 + 0.5tCLCL - 8 0.5tCLCL + 4 0.5tCLCL - 8 0.5tCLCL + 5
ns
(tLLWL)
tSTC2
6 + tSTC2
+ tSTC2
+ tSTC2
+ tSTC2
tSTC2
+ tSTC2
+ tSTC2
+ tSTC2
+ tSTC2
Port 0 Address Valid to RD or
WR Low (Note 16)
tAVRL0
(tAVWL0)
1.5tCLCL - 5
tCLCL - 5 +
ns
+ tSTC2
tSTC2
Port 2 Address Valid to RD or
WR Low (Note 16)
tAVRL2
(tAVWL2)
0 + tSTC5 - 5
0.5tCLCL - 5
+ tSTC5
1.5tCLCL - 5
+ tSTC5
tCLCL - 5 +
tSTC5
1.5tCLCL - 5
+ tSTC5
ns
Data Out Valid to WR
Transition (Note 15)
tQVWX
-5
-5
-5
-5
-5
ns
Data Hold After WR
(Note 15)
tWHQX
tCLCL + tSTC2
- 10
tCLCL + tSTC2
- 10
tCLCL + tSTC2
- 10
tCLCL + tSTC2
- 10
tCLCL + tSTC2
- 10
ns
RD or WR High to ALE High
(Note 15)
tRHLH
(tWHLH)
tSTC2 - 2
tSTC2 + 4
tSTC2 - 2
tSTC2 + 4
tSTC2 - 2
tSTC2 + 4
tSTC2 - 2
tSTC2 + 4
tSTC2 - 2
tSTC2 + 4
ns
Note: Specifications to -40∞C are guaranteed by design and are not production tested. AC electrical characteristics assume 50% duty cycle for the oscillator and are not 100% tested, but are
guaranteed by design.
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