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| 型號(hào)： | 28LV64 |
| 元件分類： | EEPROM |
| 英文描述： | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| 中文描述： | 該CAT24FC02是一個(gè)2 KB的EEPROM的國(guó)內(nèi)256個(gè)8位每字舉辦的串行CMOS |
| 文件頁(yè)數(shù)： | 7/12頁(yè) |
| 文件大小： | 527K |
| 代理商： | 28LV64 |
CAT28LV64
7
Doc. No. 1010, Rev. D
Doc. No. 1010, Rev. A
OE
CE
WE
ADDRESS
I/O
tWP
tBLC
BYTE 0
BYTE 1
BYTE 2
BYTE n
BYTE n+1
BYTE n+2
LAST BYTE
tWC
Page Write
The page write mode of the CAT28LV64 (essentially an
extended BYTE WRITE mode) allows from 1 to 32 bytes
of data to be programmed within a single EEPROM write
cycle. This effectively reduces the byte-write time by a
factor of 32.
Following an initial WRITE operation (
WE
pulsed low, for
t
WP
, and then high) the page write mode can begin by
issuing sequential
WE
pulses, which load the address
and data bytes into a 32 byte temporary buffer. The page
address where data is to be written, specified by bits A
5
to A
12
, is latched on the last falling edge of
WE
. Each
byte within the page is defined by address bits A
0
to A
4
(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 automatic
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.
Figure 5. Byte Write Cycle [CE Controlled]
Figure 6. Page Mode Write Cycle
ADDRESS
CE
OE
WE
DATA OUT
tAS
DATA IN
DATA VALID
HIGH-Z
tAH
tWC
tOEH
tDH
tDS
tOES
tBLC
tCH
tCS
tCW
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 28LV64A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:64K (8K x 8) Low Voltage CMOS EEPROM |
| 28LV64A_04 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:64K (8K x 8) Low Voltage CMOS EEPROM |
| 28LV64A-20/L | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:64K (8K x 8) Low Voltage CMOS EEPROM |
| 28LV64A--20/L | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EEPROM|8KX8|CMOS|LDCC|32PIN|PLASTIC |
| 28LV64A-20/P | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:64K (8K x 8) Low Voltage CMOS EEPROM |
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