参数资料
型号: CAT28C256HI-12T
厂商: ON Semiconductor
文件页数: 8/14页
文件大小: 0K
描述: IC EEPROM 256KBIT 120NS 28TSOP
标准包装: 1
格式 - 存储器: EEPROMs - 并行
存储器类型: EEPROM
存储容量: 256K (32K x 8)
速度: 120ns
接口: 并联
电源电压: 4.5 V ~ 5.5 V
工作温度: -40°C ~ 85°C
封装/外壳: 28-TSSOP(0.465",11.8mm 宽)
供应商设备封装: 28-TSOP(8x13.4)
包装: 标准包装
产品目录页面: 808 (CN2011-ZH PDF)
其它名称: CAT28C256H13I-12TDKR
CAT28C256H13I-12TDKR-ND
CAT28C256HI-12TDKR
CAT28C256
DATA Polling
DATA polling is provided to indicate the completion of
write cycle. Once a byte write or page write cycle is initiated,
attempting to read the last byte written will output the
complement of that data on I/O 7 (I/O 0 –I/O 6 are
indeterminate) until the programming cycle is complete.
Upon completion of the self ? timed write cycle, all I/O’s will
output true data during a read cycle.
ADDRESS
CE
WE
Toggle Bit
In addition to the DATA Polling feature of the
CAT28C256, the device offers an additional method for
determining the completion of a write cycle. While a write
cycle is in progress, reading data from the device will result
in I/O 6 toggling between one and zero. However, once the
write is complete, I/O 6 stops toggling and valid data can be
read from the device.
t OEH
t OE
t OES
OE
t WC
I/O7
D IN = X
D OUT = X
D OUT = X
Figure 8. DATA Polling
WE
CE
OE
I/O 6
t OEH
t OE
(Note 14)
(Note 14)
t OES
t WC
Figure 9. Toggle Bit
14. Beginning and ending state of I/O 6 is indeterminate.
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