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| 型號(hào)： | CAT34RC02PITE13REV-E |
| 元件分類： | DRAM |
| 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)： | 7/16頁(yè) |
| 文件大小： | 445K |
| 代理商： | CAT34RC02PITE13REV-E |
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CAT34RC02
7
Doc No. 1052, Rev. K
The PSWP flag can be set (forever) by issuing a
‘
Byte
Write
’
command, with the Slave address preamble set to
‘
6h
’
, followed by a
‘
don
’
t care
’
address, followed by
‘
don
’
t
care
’
data and a STOP condition. The CAT34RC02 will
acknowledge the Slave address, dummy byte address
and dummy data (Fig. 10). The PSWP flag will be
permanently set (after the internal write cycle is
completed).
The SWP commands are shown in Table 1.
Table 1. SWP Commands
s
s
e
r
d
d
A
e
v
a
S
N
I
P
e
m
a
e
r
P
s
s
e
r
d
d
A
e
c
e
D
R/
W
d
n
a
m
m
o
C
2
A
1
A
0
A
7
B
6
B
5
B
4
B
3
B
2
B
1
B
0
B
P
A
W
E
S
R
D
2
A
1
A
0
A
0
1
1
0
2
A
1
A
0
A
1
T
E
S
P
W
S
R
0
0
V
H
V
0
1
1
0
0
0
1
0
P
R
A
W
E
S
L
R
C
0
1
V
H
V
0
1
1
0
0
1
1
0
T
E
S
P
W
S
P
2
A
1
A
0
A
0
1
1
0
2
A
1
A
0
A
0
The CAT34RC02 will not acknowledge RSWP or PSWP
commands, once the PSWP flag is set. If the PSWP flag
is not set, but the WP pin is HIGH, then the CAT34RC02
will react to RSWP or PSWP commands as follows: if the
command attempts to
‘
flip
’
one of the two SWP switches,
then the CAT34RC02 will respond the same way the
regular memory would, i.e. the command and address
(in this case dummy) are acknowledged, but the data (in
this case dummy) will not be acknowledged; if the
command attempts to
‘
reaffirm
’
one of the two switches,
then the CAT34RC02 will not acknowledge the command
itself. In addition, the CAT34RC02 will not acknowledge
a
‘
reaffirming
’
SWP command, even if the WP pin is
LOW.
Power-On Reset (POR)
The CAT34RC02 incorporates Power-On Reset (POR)
circuitry which protects the device against malfunctioning
while V
CC
is lower than the recommended operating
voltage.
The device will power up into a read-only state and will
power-down into a reset state when V
CC
crosses the
POR level of ~1.3V.
READ OPERATIONS
Immediate Address Read
In standby mode, the CAT34RC02 internal address
counter points to the data byte immediately following the
last byte accessed by a previous operation. If the
‘
previous
’
byte was the last byte in memory, then the
address counter will point to the first memory byte, etc.
If the CAT34RC02 decodes a Slave address with a
‘
1
’
in
the R/
W
bit position (Fig. 8), it will issue an ACK in the 9
th
clock cycle, and will then transmit the data byte being
pointed at by the address counter. The Master can then
stop further transmission by issuing a NoACK, followed
by a STOP condition.
Selective Read
The READ operation can also be started at an address
different from the one stored in the address counter. The
Figure 8. Immediate Address Read Timing
SCL
SDA
8th Bit
STOP
NO ACK
DATA OUT
8
9
SLAVE
ADDRESS
S
A
C
K
DATA
N
O
A
C
K
S
T
O
P
P
BUS ACTIVITY:
MASTER
SDA LINE
S
T
A
R
T
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CAT34RC02JITE13REV-E | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| CAT34RC02PETE13REV-E | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| CAT34RC02LETE13REV-E | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| CAT34RC02LITE13REV-E | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| CAT34RC02SP2ETE13REV-E | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CAT34RC02SP2ETE13REV-E | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:2-kb I2C Serial EEPROM, Serial Presence Detect |
| CAT34RC02SP2ITE13 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:2-kb I2C Serial EEPROM, Serial Presence Detect |
| CAT34RC02SP2ITE13REV-E | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:2-kb I2C Serial EEPROM, Serial Presence Detect |
| CAT34RC02UETE13REV-E | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:2-kb I2C Serial EEPROM, Serial Presence Detect |
| CAT34RC02UITE13 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:2-kb I2C Serial EEPROM, Serial Presence Detect |
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