收藏本站
CAT24C21
SCL
SDA
8th Bit
Byte n
ACK
t WR
STOP
CONDITION
Figure 6. Write Cycle Timing
START
CONDITION
ADDRESS
Page Write
The CAT24C21 writes up to 16 bytes of data in a single
write cycle, using the Page Write operation. The Page Write
operation (Figure 11) is initiated in the same manner as the
Byte Write operation, however instead of terminating after
the initial word is transmitted, the Master is allowed to send
up to fifteen additional bytes. After each byte has been
transmitted the CAT24C21 will respond with an ACK, and
internally increment the low order address bits by one. The
high order bits remain unchanged.
If the Master transmits more than sixteen bytes prior to
sending the STOP condition, the address counter ‘wraps
around’, and previously transmitted data will be
overwritten.
Once all sixteen bytes are received and the STOP
condition has been sent by the Master, the internal
SDA
SCL
programming cycle begins. At this point all received data is
written to the CAT24C21 in a single write cycle.
Acknowledge Polling
The 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
CAT24C21 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 CAT24C21 is still busy with the write
operation, no ACK will be returned. If the CAT24C21 has
completed the write operation, an ACK will be returned and
the host can then proceed with the next read or write
operation.
START Bit
Figure 7. Start/Stop Timing
STOP Bit
SCL FROM
MASTER
1
8
9
DATA OUTPUT
FROM TRANSMITTER
DATA OUTPUT
FROM RECEIVER
START
Figure 8. Acknowledge Timing
ACKNOWLEDGE
1
0
1
0
X
X
X
R/W
Figure 9. Slave Address Bits
http://onsemi.com
6
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
CAT24C256XI-T2 IC EEPROM 256KBIT 400KHZ 8SOIC
CAT24C32HU3I-GT3 IC EEPROM 32KB I2C SERIAL 8UDFN
CAT24C32TSI-T3 IC EEPROM SRL 32KB I2C 5TSOP
CAT24C512HU5IGT3 IC EEPROM SRL 512KB I2C 8UDFN
CAT24C512XI IC EEPROM I2C SRL 512KB 8SOIC
CAT24C64ZI-GT3 IC EEPROM I2C SRL 64KB 8MSOP
CAT24M01XI IC EEPROM I2C SRL 1MB 8SOIC
CAT24M01YI-GT3 IC EEPROM SRL 1MB I2C 8TSSOP
相关代理商/技术参数
CAT24C21WGI 制造商:Rochester Electronics LLC 功能描述: 制造商:Catalyst Semiconductor 功能描述:
CAT24C21WGI-T3 制造商:Rochester Electronics LLC 功能描述: 制造商:Catalyst Semiconductor 功能描述:
CAT24C21WI 功能描述:电可擦除可编程只读存储器 1K Dual Mode Serial RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8
CAT24C21WI-G 制造商:Rochester Electronics LLC 功能描述: 制造商:ON Semiconductor 功能描述:
CAT24C21WI-GT3 功能描述:电可擦除可编程只读存储器 1K DUAL MODE SER 电可擦除可编程只读存储器 RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8
CAT24C21WI-T3 制造商:ON Semiconductor 功能描述:1K DUAL MODE SERIAL EEPROM - Tape and Reel
CAT24C21ZI 制造商:Catalyst Semiconductor 功能描述:
CAT24C256HU4IGT3 功能描述:电可擦除可编程只读存储器 LOW-SATURATION VOLTAGE RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8