DS2252T View Datasheet(PDF) - Dallas Semiconductor -> Maxim Integrated
Part Name
Description
Manufacturer
DS2252T Datasheet PDF : 14 Pages
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DS2252T
AC CHARACTERISTICS
PARAMETER
SDI Pulse Reject
SDI Pulse Accept
SYMBOL MIN
tSPR
tSPA
10
(tA = 0°C to70°C; VCC=0V to 5V)
TYP
MAX
UNITS NOTES
2
µs
3
µs
3
AC CHARACTERISTICS
EXPANDED BUS MODE TIMING SPECIFICATIONS
# PARAMETER
SYMBOL
1 Oscillator Frequency
1/tCLK
2 ALE Pulse Width
tALPW
3 Address Valid to ALE Low
tAVALL
4 Address Hold After ALE Low
tAVAAV
14 RD Pulse Width
tRDPW
15 WR Pulse Width
tWRPW
16 RD Low to Valid Data In @12 MHz
@16 MHz
tRDLDV
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
tRDHDV
tRDHDZ
tALLVD
tAVDV
tALLRDL
tAVRDL
tDVWRL
tDVWRH
tWRHDV
tRDLAZ
tRDHALH
(tA = 0°C to70°C; VCC = 5V + 10%)
MIN
MAX
UNITS
1.0
16 (–16)
MHz
2tCLK–40
ns
tCLK–40
ns
tCLK–35
ns
6tCLK–100
ns
6tCLK–100
ns
5tCLK–165
ns
5tCLK–105
ns
0
ns
2tCLK–70
ns
8tCLK–150
ns
8tCLK–90
ns
9tCLK–165
ns
9tCLK–105
ns
3tCLK–50
3tCLK+50
ns
4tCLK–130
ns
tCLK–60
ns
7tCLK–150
ns
7tCLK–90
ns
tCLK–50
ns
0
ns
tCLK–40
tCLK+50
ns
121395 9/14
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