X5645 XICOR [Xicor Inc.], X5645 Datasheet - Page 9

• Manufacturer Part Number: X5645
• Description: CPU Supervisor with 64Kbit SPI EEPROM
• Manufacturer: XICOR [Xicor Inc.]

X5643/X5645
Figure 8. Write Sequence
Figure 9. Status Register Write Sequence
SYMBOL TABLE
REV 1.1.1 3/5/01
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
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
7
4
6
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15 14 13
8
5
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
Characteristics subject to change without notice.
2
5
6
Data Byte N
1
4
5
0
3
4
2
Data Byte 1
3
1
2
0
1
0
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