参数资料
型号: CAT28C512GI12
厂商: ON Semiconductor
文件页数: 8/12页
文件大小: 0K
描述: IC EEPROM 512KBIT 120NS 32PLCC
产品变化通告: Product Obsolescence 05/Oct/2010
标准包装: 32
格式 - 存储器: EEPROMs - 并行
存储器类型: EEPROM
存储容量: 512K (64K 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: 32-LCC(J 形引线)
供应商设备封装: 32-PLCC(11.43x13.97)
包装: 管件
其它名称: CAT28C512GI-12
CAT28C512GI-12-ND
CAT28C512/513
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 com-
plete. Upon completion of the self-timed write cycle, all
I/O ’ s will output true data during a read cycle.
Figure 7. DATA Polling
ADDRESS
CE
WE
Toggle Bit
In addition to the DATA Polling feature of the CAT28C512/
513, the device offers an additional method for determin-
ing 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.
tOEH
tOE
tOES
OE
tWC
I/O7
DIN = X
DOUT = X
D OUT = X
Figure 8. Toggle Bit
WE
CE
OE
I/O6
tOEH
tOE
(1)
(1)
tOES
tWC
Note:
(1) Beginning and ending state of I/O 6 is indeterminate.
Doc. No. MD-1007, Rev. I
8
? 2009 SCILLC. All rights reserved.
Characteristics subject to change without notice
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