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參數(shù)資料
| 型號(hào)： | CAT28C65B |
| 英文描述： | 64K-Bit CMOS PARALLEL E2PROM |
| 中文描述： | 64K的位CMOS并行E2PROM的 |
| 文件頁(yè)數(shù)： | 9/11頁(yè) |
| 文件大小： | 60K |
| 代理商： | CAT28C65B |
CAT28C65B
9
Doc. No. 25036-00 2/98
WE
CE
OE
I/O6
tOEH
tOE
tOES
tWC
(1)
(1)
ADDRESS
CE
WE
OE
I/O7
DIN = X
DOUT = X
DOUT = X
tOE
tOEH
tWC
tOES
(which can be loaded in any order) during the first and
subsequent write cycles. Each successive byte load
cycle must begin within t
BLC MAX
of the rising edge of the
preceding WE pulse. There is no page write window
limitation as long as WE is pulsed low within t
BLC MAX
.
Upon completion of the page write sequence, WE must
stay high a minimum of t
BLC MAX
for the internal auto-
matic program cycle to commence. This programming
cycle consists of an erase cycle, which erases any data
that existed in each addressed cell, and a write cycle,
which writes new data back into the cell. A page write will
only write data to the locations that were addressed and
will not rewrite the entire page.
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.
Toggle Bit
In addition to the DATA Polling feature, 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.
Ready/BUSY (RDY/BUSY)
The RDY/BUSY pin is an open drain output which
indicates device status during programming. It is pulled
low during the write cycle and released at the end of
programming. Several devices may be OR-tied to the
same RDY/BUSY line.
Figure 7. DATA Polling
28C65B F10
Figure 8. Toggle Bit
28C65B F11
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|---|---|
| CAT28C65BG-12 | 功能描述:電可擦除可編程只讀存儲(chǔ)器 (8kx8) 64K 5V 120ns RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| CAT28C65BG-90 | 功能描述:電可擦除可編程只讀存儲(chǔ)器 (8kx8) 64K 5V 90ns RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| CAT28C65BGA-12 | 功能描述:電可擦除可編程只讀存儲(chǔ)器 (8kx8) 64K 5V 120ns RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| CAT28C65BGI-12 | 功能描述:電可擦除可編程只讀存儲(chǔ)器 (8kx8) 64K 5V 120ns RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| CAT28C65BGI-90 | 功能描述:電可擦除可編程只讀存儲(chǔ)器 (8kx8) 64K 5V 90ns RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 |
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