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參數(shù)資料
| 型號： | X9520 |
| 英文描述： | Triple DCP, POR, 2 kbit EEPROM Memory, Dual Voltage Monitors(3個DCP,上電復位,2k位串行EEPROM,分別的雙電壓監(jiān)控器端電壓-1.0~+15V) |
| 中文描述： | 三氯酚，葡萄牙，2千比特EEPROM存儲器，雙電壓監(jiān)視器（3個副處長，上電復位和2K位串行EEPROM中，分別的雙電壓監(jiān)控器端電壓-1.0?15V的） |
| 文件頁數(shù)： | 11/34頁 |
| 文件大?。?/td> | 210K |
| 代理商： | X9520 |
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REV 1.3 4/13/04
Characteristics subject to change without notice.
11 of 34
www.xicor.com
X9520
– Preliminary Information
The master terminates the Data Byte loading by issuing a
STOP condition, which causes the X9520 to begin the
nonvolatile write cycle. As with the byte write operation, all
inputs are disabled until completion of the internal write
cycle. See Figure 12 for the address, ACKNOWLEDGE,
and data transfer sequence.
Stops and EEPROM Write Modes
Stop conditions that terminate write operations must be
sent by the master after sending at least 1 full data byte
and receiving the subsequent ACKNOWLEDGE signal. If
the master issues a STOP within a Data Byte, or before
the X9520 issues a corresponding ACKNOWLEDGE, the
X9520 cancels the write operation. Therefore, the con-
tents of the EEPROM array does not change.
EEPROM Array Read Operations
Read operations are initiated in the same manner as write
operations with the exception that the R/W bit of the Slave
Address Byte is set to one. There are three basic read
operations: Current EEPROM Address Read, Random
EEPROM Read, and Sequential EEPROM Read.
Current EEPROM Address Read
Internally the device contains an address counter that
maintains the address of the last word read incremented
by one. Therefore, if the last read was to address n, the
next read operation would access data from address n+1.
On power up, the address of the address counter is unde-
fined, requiring a read or write operation for initialization.
Upon receipt of the Slave Address Byte with the R/W bit
set to one, the device issues an ACKNOWLEDGE and
then transmits the eight bits of the Data Byte. The master
terminates the read operation when it does not respond
with an ACKNOWLEDGE during the ninth clock and then
issues a STOP condition (See Figure 14 for the address,
ACKNOWLEDGE, and data transfer sequence).
It should be noted that the ninth clock cycle of the read
operation is not a “don’t care.” To terminate a read opera-
tion, the master must either issue a STOP condition dur-
ing the ninth cycle or hold SDA HIGH during the ninth
clock cycle and then issue a STOP condition.
Another important point to note regarding the “Current
EEPROM Address Read” , is that this operation is not
available if the last executed operation was an access to a
address
15
address
11
5 bytes
7 bytes
address
= 6
address pointer
ends here
Addr = 7
Figure 13. Example: Writing 12 bytes to a 16-byte page starting at location 11.
10
10
10
10
S
t
a
r
t
S
t
o
p
Slave
Address
Data
A
C
K
SDA Bus
Signals from
the Slave
Signals from
the Master
1
Figure 14. Current EEPROM Address Read Sequence
1
01 0
0 0 0
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X9520_06 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Triple DCP, POR, 2kbit EEPROM Memory, Dual Voltage Monitors |
| X9520_07 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Triple DCP, POR, 2kbit EEPROM Memory, Dual Voltage Monitors |
| X9520B20IA | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Triple DCP, POR,2kbit EEPROM Memory, Dual Voltage Monitors |
| X9520B20I-A | 功能描述:IC LASR CTRLR 3CHAN 5.5V 20TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 激光驅(qū)動器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:60 系列:- 類型:激光二極管驅(qū)動器 數(shù)據(jù)速率:- 通道數(shù):4 電源電壓:3.3V 電流 - 電源:- 電流 - 調(diào)制:- 電流 - 偏置:- 工作溫度:0°C ~ 70°C 封裝/外殼:40-TQFN 裸露焊盤 供應商設(shè)備封裝:40-TQFN EP 包裝:托盤 安裝類型:表面貼裝 |
| X9520B20I-AT1 | 功能描述:IC LASR CTRLR 3CHAN 5.5V 20TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 激光驅(qū)動器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:60 系列:- 類型:激光二極管驅(qū)動器 數(shù)據(jù)速率:- 通道數(shù):4 電源電壓:3.3V 電流 - 電源:- 電流 - 調(diào)制:- 電流 - 偏置:- 工作溫度:0°C ~ 70°C 封裝/外殼:40-TQFN 裸露焊盤 供應商設(shè)備封裝:40-TQFN EP 包裝:托盤 安裝類型:表面貼裝 |
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