DS2251T
AC CHARACTERISTICS (cont’d)
SERIAL PORT TIMING – MODE 0
# PARAMETER
35 Serial Port Clock Cycle Time
36 Output Data Setup to Rising Clock Edge
37 Output Data Hold after Rising Clock Edge
38 Clock Rising Edge to Input Data Valid
39 Input Data Hold after Rising Clock Edge
SYMBOL
tSPCLK
tDOCH
tCHDO
tCHDV
tCHDIV
(tA = 0°C to70°C; VCC = 5V + 10%)
MIN
MAX
UNITS
12tCLK
µs
10tCLK–133
ns
2tCLK–117
ns
10tCLK–133
ns
0
ns
SERIAL PORT TIMING – MODE 0
INSTRUCTION
0
1
2
3
4
5
6
7
8
ALE
CLOCK
36
DATA OUT
WRITE TO
SBUF REGISTER
INPUT DATA
CLEAR RI
35
37
0
1
2
39
38
VALID
VALID
VALID
3
VALID
4
VALID
5
6
7 SET TI
VALID
VALID
SET RI
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