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参数资料
| 型号： | CAT1161WI-28-GT3 |
| 厂商： | ON Semiconductor |
| 文件页数： | 8/13页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR 16K EEPROM 8-SOIC |
| 标准包装： | 3,000 |
| 类型： | 简单复位/加电复位 |
| 监视电压数目： | 1 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 高有效/低有效 |
| 复位超时： | 最小为 130 ms |
| 电压 - 阀值： | 2.85V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
CAT1161, CAT1162
WRITE OPERATIONS
Byte Write
In the Byte Write mode, the Master device sends the
START condition and the slave address information (with
the R/W bit set to zero) to the Slave device. After the Slave
generates an acknowledge, the Master sends a 8 ? bit address
that is to be written into the address pointers of the
CAT1161/2. After receiving another acknowledge from the
Slave, the Master device transmits the data to be written into
the addressed memory location. The CAT1161/2
acknowledges once more and the Master generates the
STOP condition. At this time, the device begins an internal
programming cycle to non ? volatile memory. While the
cycle is in progress, the device will not respond to any
request from the Master device.
Page Write
The CAT1161/2 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
CAT1161/2 will respond with an acknowledge and
internally increment the lower order address bits by one. The
high order bits remain unchanged.
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
CAT1161/2 in a single write cycle.
S
T
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 7. Byte Write Timing
S
T
S
BUS ACTIVITY:
MASTER
A
R
T
SLAVE
ADDRESS
BYTE
ADDRESS (n)
DATA?n
DATA n+1
DATA n+15
T
O
P
SDA LINE
S
P
A
C
K
A
C
K
A
C
K
A
C
K
A
C
K
Figure 8. 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
CAT1161/2 initiates 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 CAT1161/2 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.
WRITE PROTECTION
The Write Protection feature allows the user to protect
against inadvertent memory array programming. If the WP
pin is tied to V CC , the entire memory array is protected and
and byte addresses, but the memory location accessed is
protected from programming by the device’s failure to send
an acknowledge after the first byte of data is received.
becomes read only. The CAT1161/2 will accept both slave
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CAT1161WI-28-T3 | 功能描述:监控电路 CPU Supervisor with 16K EEPROM RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| CAT1161WI-28-TE13 | 制造商:ON Semiconductor 功能描述:Processor Supervisor 3V/3.3V/5V 8-Pin SOIC N T/R |
| CAT1161WI30 | 制造商:ON Semiconductor 功能描述:CPU SUPERVISOR WITH 16K EEPROM - Rail/Tube |
| CAT1161WI-30 | 功能描述:监控电路 16K I2C Memory w/WDT RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| CAT1161WI-30-G | 功能描述:监控电路 CPU w/16K RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
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