s-93c46b Seiko Instruments Inc., s-93c46b Datasheet - Page 13

• Manufacturer Part Number: s-93c46b
• Description: Cmos Serial E2prom
• Manufacturer: Seiko Instruments Inc.

CS
SK
DO
DI
Rev.4.3
3. Reading (READ)
CS
SK
DO
DI
The READ instruction reads data from a specified address.
After CS has gone high, input an instruction in the order of the start bit, read instruction, and address.
Since the last input address (A
impedance (Hi-Z) to low, which is held until the next rise of SK. 16-bit data starts to be output in
synchronization with the next rise of SK.
3. 1 Sequential read
<1>
1
_00
1
After the 16-bit data at the specified address has been output, inputting SK while CS is high
automatically increments the address, and causes the 16-bit data at the next address to be output
sequentially. The above method makes it possible to read the data in the whole memory space.
The last address (A
2
<1>
1
0
3
1
2
4
Hi-Z
0
A
3
6
5
A
A
5
4
Hi-Z
X: S-93C56B
A
5
6
7
: S-93C66B
A
A
4
5
4
7
A
A
3
6
3
8
n
Figure 9 Read Timing (S-93C56B, S-93C66B)
A
A
2
2
7
9
A
A
10
1
1
8
A
Figure 8 Read Timing (S-93C46B)
A
A
1
11
0
0
9
0
0
A
0
) has been latched, the output status of the DO pin changes from high
0
12
D
10
D
= 1
15
15
13
Seiko Instruments Inc.
D
11
D
14
14
14
D
12
D
13
13
1 1) rolls over to the top address (A
24
25
D
23
2
D
26
2
D
24
1
D
27
1
ADRINC
D
ADRINC
25
0
D
28
0
D
15
26
D
15
29
D
14
27
D
14
D
13
28
D
13
40
41
CMOS SERIAL E
D
2
39
42
D
D
2
n
1
40
43
D
S-93C46B/56B/66B
ADRINC
D
1
0
41
44
ADRINC
D
D
A
0
15
1
42
45
D
D
A
15
14
0
43
D
D
= 0
14
13
44
D
13
2
PROM
0 0).
Hi
-
Z
13
Hi-Z