X5648 INTERSIL [Intersil Corporation], X5648 Datasheet - Page 9

• Manufacturer Part Number: X5648
• Description: CPU Supervisor with 64Kbit SPI EEPROM
• Manufacturer: INTERSIL [Intersil Corporation]

Figure 8. Write Sequence
Figure 9. Status Register Write Sequence
SYMBOL TABLE
WAVEFORM
SCK
SCK
CS
CS
SI
SI
32 33 34 35 36 37 38 39
7
INPUTS
Must be
steady
May change
from LOW
to HIGH
May change
from HIGH
to LOW
Don’t Care:
Changes
Allowed
N/A
SCK
SO
CS
6
SI
0
5
Data Byte 2
1
Instruction
4
9
High Impedance
2
OUTPUTS
Will be
steady
Will change
from LOW
to HIGH
Will change
from HIGH
to LOW
Changing:
State Not
Known
Center Line
is High
Impedance
3
0
3
2
1
4
Instruction
1
2
5
0
3
6
40 41 42 43 44 45 46 47
7
4
7
6
15 14 13
8
5
X5648, X5649
5
Data Byte 3
9
6
4
16 Bit Address
10
7
3
8
7
2
20 21 22 23 24 25 26 27 28 29 30 31
3
9
6
1
2
10 11 12 13 14 15
5
0
1
4
Data Byte
0
3
6
7
2
5
6
Data Byte N
1
4
5
0
3
4
2
Data Byte 1
3
1
2
0
1
0
March 17, 2005
FN8136.0