CAT1027ZI-25-G ON Semiconductor, CAT1027ZI-25-G Datasheet - Page 11

• Manufacturer Part Number: CAT1027ZI-25-G
• Description: Supervisory Circuits CPU w/2K
• Manufacturer: ON Semiconductor

Specifications of CAT1027ZI-25-G

• Product Category: Supervisory Circuits
• Rohs: yes
• Number Of Voltages Monitored: 1
• Monitored Voltage: 3 V, 3.3 V, 5 V
• Undervoltage Threshold: 2.55 V
• Overvoltage Threshold: 2.7 V
• Manual Reset: Not Resettable
• Watchdog: Watchdog
• Supply Voltage - Max: 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: MSOP-8
• Maximum Power Dissipation: 1000 mW
• Minimum Operating Temperature: - 40 C
• Supply Current (typ): 3000 uA
• Supply Voltage - Min: 2.7 V

Page Write
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 CAT1026 and CAT1027 will respond with
an acknowledge and internally increment the lower order
address bits by one. The high order bits remain unchanged.
Acknowledge Polling
the typical write cycle time. Once the stop condition is issued
to indicate the end of the host’s write operation, the
CAT1026 and CAT1027 initiate the internal write cycle.
ACK polling can be initiated immediately. This involves
initiated in the same manner as the write operation with one
exception, the R/W bit is set to one. Three different READ
The CAT1026 and CAT1027 write up to 16 bytes of data
Disabling of the inputs can be used to take advantage of
The READ operation for the CAT1026 and CAT1027 is
BUS ACTIVITY:
SDA LINE
MASTER
S
BUS ACTIVITY:
R
S
T
A
T
SDA LINE
ADDRESS
MASTER
SLAVE
S
S
A
R
T
T
A
C
K
ADDRESS (n)
Figure 10. Page Write Timing
ADDRESS
Figure 9. Byte Write Timing
SLAVE
BYTE
READ OPERATIONS
http://onsemi.com
C
A
K
A
C
K
11
ADDRESS
the STOP condition, the address counter ‘wraps around’,
and previously transmitted data will be overwritten.
has been sent by the Master, the internal programming cycle
begins. At this point, all received data is written to the
CAT1026 and CAT1027 in a single write cycle.
issuing the start condition followed by the slave address for
a write operation. If the device is still busy with the write
operation, no ACK will be returned. If a write operation has
completed, an ACK will be returned and the host can then
proceed with the next read or write operation.
operations are possible: Immediate/Current Address
READ, Selective/Random READ and Sequential READ.
BYTE
DATA n
If the Master transmits more than 16 bytes before sending
When all 16 bytes are received, and the STOP condition
A
C
K
A
C
K
DATA n+1
DATA
C
A
K
C
A
K
P
O
S
T
P
DATA n+15
C
A
K
O
S
T
P
P