CY8C9520-24PVXI Cypress Semiconductor Corp, CY8C9520-24PVXI Datasheet - Page 10

• Manufacturer Part Number: CY8C9520-24PVXI
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY8C9520-24PVXI

• Operating Temperature (min): -40C
• Operating Temperature Classification: Industrial
• Operating Temperature (max): 85C
• Package Type: SSOP
• Rad Hardened: No
• Lead Free Status / Rohs Status: Compliant

CY8C95xx Preliminary Data Sheet
August 17, 2005
start
start
S A6 A5
S A6 A5
start
slave address
start
slave address
S
S
A4
A4
A6 A5
A6 A5
A3 A2 A1 A0 0 A
A3 A2 A1 A0 0 A
slave address
slave address
A4
A4
A3 A2 A1 A0
A3 A2 A1 A0
R/W
R/W
ACK from
ACK from
slave
slave
R/W
ACK from
R/W
0 A
ACK from
0 A
slave
slave
High(Addr)
High(Addr)
0 0 0 0 0 0 0 1 A S
memory address
memory address
0 0 0 0 1 0 0 1 A
Register address = 09h
Register address = 1
ACK from
ACK from
Figure 2-3. Port Reading and Writing in Multi-Port Device
slave
slave
A
A
Reading from EEPROM
Document No. 38-12036 Rev. *A
Low(Addr)
Low(Addr)
Reading from GPort 1
Writing to EEPROM
Writing from GPort 1
Figure 2-2. Memory Reading and Writing
ACK from
ACK from
slave
slave
ACK from
ACK from
slave
slave
A
data from GPort1
A
A6 A5
S A6 A5
performs output to GPort 1
data 1
At this moment, device
A4
A3 A2 A1 A0
up to the end of address space
A4
A
performs reading from GPort 1
A3 A2 A1 A0 1 A
A
data from GPort 2
At this moment, device
R/W
data 2
ACK from
1 A
master
Output to GPort 2
data from GPort1
ACK from
R/W
ACK from
slave
slave
A
A
data from GPort 0
Reading from GPort 2
data(Addr)
...
A data from GPort 2 A
Output to GPort 3
ACK from
ACK from
slave
master
A
A P
A data(Addr+1)
stop
If current address crosses
then device performs real
64-byte block boundary,
...
writing to EEPROM
2. Pinouts and Pin Descriptions
stop
ACK from
P
master
A
...
from master
No ACK
N P
...
stop
from master
No ACK
N P
stop
10
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