参数资料
| 型号： | X40020S14I-A |
| 厂商： | Intersil |
| 文件页数： | 12/24页 |
| 文件大小： | 0K |
| 描述： | IC VOLTAGE MONITOR DUAL 14-SOIC |
| 标准包装： | 50 |
| 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： | 高有效 |
| 复位超时： | 可调节/可选择 |
| 电压 - 阀值： | 2.9V，4.6V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 14-SOICN |
| 包装： | 管件 |
X40020, 40021
Figure 10. Byte Write Sequence
Signals from
the Master
S
t
a
r
t
Slave
Address
Byte
Address
Data
S
t
o
p
SDA Bus
0
Signals from
the Slave
A
C
K
A
C
K
A
C
K
Stops and Write Modes
Stop conditions that terminate write operations must
be sent by the master after sending at least 1 full data
byte plus the subsequent ACK signal. If a stop is
issued in the middle of a data byte, or before 1 full
data byte plus its associated ACK is sent, then the
device will reset itself without performing the write. The
contents of the array will not be effected.
Figure 11. Acknowledge Polling Sequence
Byte Load Completed
by Issuing STOP.
Enter ACK Polling
Issue START
Acknowledge Polling
The disabling of the inputs during high voltage cycles
can be used to take advantage of the typical 5ms write
cycle time. Once the stop condition is issued to indi-
cate the end of the master’s byte load operation, the
device initiates the internal high voltage cycle.
Acknowledge polling can be initiated immediately. To
do this, the master issues a start condition followed by
the Slave Address Byte for a write or read operation. If
the device is still busy with the high voltage cycle then
Issue Slave Address
Byte (Read or Write)
ACK
Returned?
YES
High Voltage Cycle
NO
Issue STOP
no ACK will be returned. If the device has completed
the write operation, an ACK will be returned and the
Complete. Continue
Command Sequence?
NO
Issue STOP
host can then proceed with the read or write operation.
See Figure 11.
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.
12
YES
Continue Normal
Read or Write
Command Sequence
PROCEED
FN8112.1
May 17, 2006
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