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參數(shù)資料
| 型號： | CAT24FC01GZETE13 |
| 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2 KB的EEPROM的國內(nèi)256個8位每字舉辦的串行CMOS |
| 文件頁數(shù)： | 6/10頁 |
| 文件大?。?/td> | 634K |
| 代理商： | CAT24FC01GZETE13 |
DsconinuedPat
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CAT24FC01
6
Doc. No. 1073, Rev. G
2005 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
WRITE OPERATIONS
Byte Write
In the Byte Write mode, the Master device sends the
START condition and the slave address information
(with the R/
W
bit set to zero) to the Slave device. After
the Slave generates an acknowledge, the Master sends
the byte address that is to be written into the address
pointer of the CAT24FC01. After receiving another
acknowledge from the Slave, the Master device transmits
the data byte to be written into the addressed memory
location. The CAT24FC01 acknowledges once more
and the Master generates the STOP condition, at which
time the device begins its internal programming to
nonvolatile memory. While this internal cycle is in
progress, the device will not respond to any request from
the Master device.
Page Write
The CAT24FC01 writes up to 16 bytes of data in a single
write cycle, using the Page Write operation. The Page
Write operation is initiated in the same manner as the
Byte Write operation, however instead of terminating
after the initial word is transmitted, the Master is allowed
to send up to 15 additional bytes. After each byte has
been transmitted the CAT24FC01 will respond with an
acknowledge, and internally increment the low order
address bits by one. The high order bits remain
unchanged.
If the Master transmits more than 16 bytes prior to
sending the STOP condition, the address counter
‘
wraps
around
’
, and previously transmitted data will be
overwritten.
Once all 16 bytes are received and the STOP condition
has been sent by the Master, the internal programming
cycle begins. At this point all received data is written to
the CAT24FC01 in a single write cycle.
Acknowledge Polling
The disabling of the inputs can be used to take advantage
of the typical write cycle time. Once the stop condition
is issued to indicate the end of the host
’
s write operation,
the CAT24FC01 initiates the internal write cycle. ACK
polling can be initiated immediately. This involves
issuing the start condition followed by the slave address
for a write operation. If the CAT24FC01 is still busy with
the write operation, no ACK will be returned. If the
CAT24FC01 has completed the write operation, an ACK
will be returned and the host can then proceed with the
next read or write operation.
WRITE PROTECTION
The CAT24FC01 is designed with a hardware protect
pin that enables the user to protect the entire memory.
Thehardware protection feature of the CAT24FC01 is
designed into the part to provide added flexibility to the
design engineers. The write protection feature of
CAT24FC01 allows the user to protect against inadvertent
programming of the memory array. If the WP pin is tied
to Vcc, the entire memory array is protected and becomes
read only. The entire memory becomes write protected
regardless of whether the write protect register has been
written or not. When WP pin is tied to Vcc, the user
cannot program the write protect register. If the WP pin
is left floating or tied to Vss, the device can be written
into.
Figure 7. Page Write Timing
Figure 6. Byte Write Timing
BYTE
ADDRESS
SLAVE
ADDRESS
S
A
C
K
A
C
K
DATA
A
C
K
S
T
O
BUS ACTIVITY:
MASTER
SDA LINE
S
T
A
R
T
BUS ACTIVITY:
MASTER
SDA LINE
DATA n+7
BYTE
ADDRESS (n)
A
C
K
A
C
K
DATA n
A
C
K
S
T
O
P
S
A
C
K
DATA n+1
A
C
K
P
SLAVE
ADDRESS
NOTE: IN THIS EXAMPLE n = XXXX 0000(B); X = 1 or 0
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CAT24FC01GZITE13 | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| CAT24FC01JETE13 | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| CAT24FC01JITE13 | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| CAT24FC01LETE13 | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| CAT24FC01LITE13 | 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 |
|---|---|
| CAT24FC01JI-TE13 | 制造商:ON Semiconductor 功能描述:EEPROM Serial-I2C 1K-Bit 128 x 8 2.5V/3.3V/5V 8-Pin SOIC N T/R |
| CAT24FC256JA-1.8 | 功能描述:電可擦除可編程只讀存儲器 256K (32KX8) RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率: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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| CAT24FC256JI-1.8 | 功能描述:電可擦除可編程只讀存儲器 256K (32KX8) Industrial Temp RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率: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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| CAT24FC256KI-1.8 | 功能描述:電可擦除可編程只讀存儲器 256K (32KX8) RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率: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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| CAT24FC256LI | 制造商:Rochester Electronics LLC 功能描述: 制造商:Catalyst Semiconductor 功能描述: |
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