参数资料
型号: CAT1027ZI-45-GT3
厂商: ON Semiconductor
文件页数: 11/19页
文件大小: 0K
描述: IC SUPERVISOR CPU 2K EEPR 8MSOP
标准包装: 3,000
类型: 多压监控器
监视电压数目: 2
输出: 开路漏极或开路集电极
复位: 低有效
复位超时: 最小为 130 ms
电压 - 阀值: 4.5V,可调
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
供应商设备封装: 8-MSOP
包装: 带卷 (TR)
CAT1026, CAT1027
Page Write
The CAT1026 and CAT1027 write 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 CAT1026 and CAT1027 will respond with
an acknowledge and internally increment the lower order
address bits by one. The high order bits remain unchanged.
S
T
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
CAT1026 and CAT1027 in a single write cycle.
S
BUS ACTIVITY:
MASTER
A
R
T
SLAVE
ADDRESS
BYTE
ADDRESS
DATA
T
O
P
SDA LINE
S
P
A
C
K
A
C
K
A
C
K
Figure 9. Byte Write Timing
S
T
S
BUS ACTIVITY:
MASTER
A
R
T
SLAVE
ADDRESS
BYTE
ADDRESS (n)
DATA?n
DATA n+1
T
DATA n+15 O
P
SDA LINE
S
P
A
C
K
A
C
K
A
C
K
A
C
K
A
C
K
Figure 10. Page Write Timing
Acknowledge Polling
Disabling of the inputs can be used to take advantage of
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
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.
READ OPERATIONS
The READ operation for the CAT1026 and CAT1027 is
initiated in the same manner as the write operation with one
operations are possible: Immediate/Current Address
READ, Selective/Random READ and Sequential READ.
exception, the R/W bit is set to one. Three different READ
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