DS2252T(2000) View Datasheet(PDF) - Dallas Semiconductor -> Maxim Integrated
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Description
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DS2252T Datasheet PDF : 15 Pages
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AC CHARACTERISTICS: EXPANDED
BUS MODE TIMING SPECIFICATIONS
# PARAMETER
1 Oscillator Frequency
2 ALE Pulse Width
3 Address Valid to ALE Low
4 Address Hold After ALE Low
14 RD Pulse Width
15 WR Pulse Width
16 RD Low to Valid Data In
@ 12 MHz
@ 16 MHz
17 Data Hold after RD High
18 Data Float after RD High
19 ALE Low to Valid Data In
@ 12 MHz
@ 16 MHz
20 Valid Addr. to Valid Data In
@ 12 MHz
@ 16 MHz
21 ALE Low to RD or WR Low
22 Address Valid to RD or WR Low
23 Data Valid to WR Going Low
24 Data Valid to WR High
@ 12 MHz
@ 16 MHz
25 Data Valid after WR High
26 RD Low to Address Float
27 RD or WR High to ALE High
DS2252T
(tA=0°C to70°C; VCC=5V ± 10%)
SYMBOL MIN
MAX UNITS
1/tCLK
1.0
16 (-16) MHz
tALPW
2tCLK -40
ns
tAVALL
tCLK -40
ns
tAVAAV
tCLK -35
ns
tRDPW
6tCLK -100
ns
tWRPW
6tCLK -100
ns
tRDLDV
5tCLK -165
ns
5tCLK -105
ns
tRDHDV
0
ns
tRDHDZ
2tCLK -70
ns
tALLVD
8CLK -150
ns
8tCLK -90
ns
tAVDV
9tCLK -165
ns
9tCLK -105
ns
tALLRDL
3tCLK -50
3tCLK +50
ns
tAVRDL
4tCLK -130
ns
tDVWRL
tCLK -60
ns
tDVWRH
7tCLK -150
7tCLK -90
ns
ns
tWRHDV
tCLK -50
ns
tRDLAZ
0
ns
tRDHALH
tCLK -40
tCLK +50
ns
EXPANDED DATA MEMORY READ CYCLE
10 of 15
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