DS2250 View Datasheet(PDF) - Dallas Semiconductor -> Maxim Integrated
Part Name
Description
Manufacturer
DS2250 Datasheet PDF : 20 Pages
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AC CHARACTERISTICS (cont'd)
PARALLEL PROGRAM LOAD TIMING
# PARAMETER
40 Oscillator Frequency
41 Address Setup to PROG Low
42 Address Hold after PROG High
43 Data Setup to PROG Low
44 Data Hold after PROG High
45 P2.7, 2.6, 2.5 Setup to VPP
46 VPP Setup to PROG Low
47 VPP Hold after PROG Low
48 PROG Width Low
49 Data Output from Address Valid
50 Data Output from P2.7 Low
51 Data Float after P2.7 High
52 Delay to Reset/ PSEN Active after Power On
53 Reset/ PSEN Active (or Verify Inactive) to
VPP High
54 VPP Inactive (Between Program Cycles)
55 Verify Active Time
DS2250(T)
(tA=0°C to70°C; VCC=5V ± 5%)
SYMBOL MIN
MAX UNITS
1/tCLK
1.0
12.0
MHz
tAVPRL
0
tPRHAV
0
tDVPRL
0
tPRHDV
0
tP27HVP
0
tVPHPRL
0
tPRHVPL
0
tPRW
2400
tCLK
tAVDV
48
tCLK
1800*
tDVP27L
48
tCLK
1800*
tP27HDZ
0
48
tCLK
1800*
tPORPV
21504
tCLK
tRAVPH
1200
tCLK
tVPPPC
1200
tCLK
tVFT
48
tCLK
2400*
* Second set of numbers refers to expanded memory programming up to 32k bytes.
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