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AT88SC1608 View Datasheet(PDF) - Atmel Corporation

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AT88SC1608 Datasheet PDF : 25 Pages
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Read Zone
Write Zone
Read Fuses
Figure 5. Read Zone
S
T
A
R
T Command
Byte Add (n)
A
C
Data (n)
K
Data (n+x)
NS
AT
CO
KP
0
A7
A0
D7
D0
A
A
C
C
K
K
D7
D0
Note: z = 0: Read user zone
z = 1: Read configuration zone
The data byte address is internally incremented following the transmission of each data
byte. As long as the AT88SC1608 receives an acknowledge from the host, it will con-
tinue to increment the data byte address and serially clock out sequential data bytes.
During a read operation, the address will roll overfrom the last byte of the current zone
to the first byte of the same zone. If the host is not allowed to read at the specified
address, the device will transmit the data byte with all bits equal to 0.
Figure 6. Write Zone
S
T
A
R
T Command
Byte Add (n)
Data (n)
S
T
O
Data (n+x)
P
10110z00
A7
A
C
K
A0
D7
A
C
K
D0
A
C
K
D7
D0
A
C
K
Note: z = 0: Write user zone
z = 1: Write configuration zone
The lower four bits of the data byte address are internally incremented following the
receipt of each data byte. The higher data byte address bits are not incremented, retain-
ing the 16-byte write-page address. Each data byte within a page must only be loaded
once. Once a stop condition is issued to indicate the end of the hosts write command,
the device initiates the internally timed nonvolatile write cycle. An ACK polling sequence
can be initiated immediately. After a write command, if the host is not allowed to write to
some address locations, a nonvolatile write cycle will still be initiated. However, the
device will only modify data at the allowed addresses.
Figure 7. Read Fuses
S
T
A
R
T Command
Fuses Add
NS
AT
CO
KP
1 0 1 1 0 1 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 F2 F1 F0
A
A
C
C
K
K
Note: Fx = 1: fuse is not blown
Fx = 0: fuse is blown
10 AT88SC1608
0971GSMEM04/04
 

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