CAT1022 CATALYST [Catalyst Semiconductor], CAT1022 Datasheet - Page 11

• Manufacturer Part Number: CAT1022
• Description: Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer
• Manufacturer: CATALYST [Catalyst Semiconductor]

Page Write
The CAT1021/22/23 writes up to 16 bytes of data in a
single write cycle, using the Page Write operation. The
page write operation is initiated in the same manner as
the byte write operation, however instead of terminating
after the initial byte is transmitted, the Master is allowed
to send up to 15 additional bytes. After each byte has
been transmitted, the CAT1021/22/23 will respond with
an acknowledge and internally increment the lower order
address bits by one. The high order bits remain
unchanged.
Figure 9. Page Write Timing
Figure 8. Byte Write Timing
BUS ACTIVITY:
SDA LINE
MASTER
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S
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T
BUS ACTIVITY:
ADDRESS
SDA LINE
SLAVE
MASTER
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T
A
T
A
K
ADDRESS (n)
ADDRESS
SLAVE
BYTE
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11
ADDRESS
If the Master transmits more than 16 bytes before sending
the STOP condition, the address counter ‘wraps around,’
and previously transmitted data will be overwritten.
When all 16 bytes are received, and the STOP condition
has been sent by the Master, the internal programming
cycle begins. At this point, all received data is written to
the CAT1021/22/23 in a single write cycle.
DATA n
BYTE
A
C
K
C
A
K
DATA n+1
DATA
CAT1021, CAT1022, CAT1023
A
C
K
C
A
K
P
O
S
T
P
DATA n+15
Doc No. 3009, Rev. K
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