参数资料
| 型号： | X40626V14T1 |
| 厂商： | Intersil |
| 文件页数： | 11/22页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR CPU DUAL 14-TSSOP |
| 标准包装： | 2,500 |
| 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 100 ms |
| 电压 - 阀值： | 2.93V，4.38V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 14-TSSOP |
| 包装： | 带卷 (TR) |
X40626
Figure 11. Acknowledge Polling Sequence
Byte load completed
by issuing STOP.
Enter ACK Polling
Issue START
Serial Read Operations
Read operations are initiated in the same manner as
write operations with the exception that the R/W bit of
the Slave Address Byte is set to one. There are three
basic read operations: Current Address Reads, Ran-
dom Reads, and Sequential Reads.
Current Address Read
Internally the device contains an address counter that
Issue Slave Address
Byte (Read or Write)
ACK
returned?
YES
Nonvolatile Cycle
complete. Continue
command sequence?
YES
Continue Normal
Read or Write
Command Sequence
NO
NO
Issue STOP
Issue STOP
maintains the address of the last word read incre-
mented by one. Therefore, if the last read was to
address n, the next read operation would access data
from address n+1. On power-up, the address in the
address counter is 00H.
Upon receipt of the Slave Address Byte with the R/W bit
set to one, the device issues an acknowledge and then
transmits the eight bits of the Data Byte. The master
terminates the read operation when it does not respond
with an acknowledge during the ninth clock and then
issues a stop condition. Refer to Figure 12 for the
address, acknowledge, and data transfer sequence.
It should be noted that the ninth clock cycle of the read
operation is not a “don’t care.” To terminate a read
operation, the master must either issue a stop condi-
tion during the ninth cycle or hold SDA HIGH during
the ninth clock cycle and then issue a stop condition.
PROCEED
Figure 12. Current Address Read Sequence
S
11
Signals from
the Master
SDA Bus
Signals from
the Slave
t
a
r
t
Slave
Address
1 0 1 0 0 S 1 S 0 1
A
C
K
Data
S
t
o
p
FN8119.0
March 28, 2005
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