- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄372526 > X1203 2-Wire RTC(Real Time Clock)/Calendar/Alarm(實時時鐘/日歷/警報) PDF資料下載
參數(shù)資料
| 型號： | X1203 |
| 英文描述： | 2-Wire RTC(Real Time Clock)/Calendar/Alarm(實時時鐘/日歷/警報) |
| 中文描述： | 2線實時時鐘（實時時鐘）/日歷/鬧鐘（實時時鐘/日歷/警報） |
| 文件頁數(shù)： | 10/19頁 |
| 文件大?。?/td> | 84K |
| 代理商： | X1203 |
X1203
10
Figure 8. Acknowledge Polling Sequence
READ OPERATIONS
There are three basic read operations: Current
Address Read, Random Read, and Sequential Read.
Current Address Read
Internally the device contains an address counter that
maintains the address of the last word read incre-
mented by one. Therefore, if the last read was to
address n, the next read operation would access data
from address n+1.
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. Refer to Figure 9 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
operation, the master must either issue a stop condi-
tion during the ninth cycle or hold SDA HIGH during
the ninth clock cycle and then issue a stop condition.
ACK
returned
Issue Slave
Address Byte
(Read or Write)
Byte load completed
by issuing STOP.
Enter ACK Polling
Issue STOP
Issue START
NO
YES
Issue STOP
NO
Continue normal
Read or Write
command
sequence
PROCEED
YES
non volatile write
Cycle complete.
Continue command
sequence
Figure 9. Current Address Read Sequence
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
1
1
1
1
0
1
1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| x1205(中文) | Real Time Clock/Calendar(實時時鐘/日期) |
| X1205V8 | Real Time Clock/Calendar |
| X1205V8I | Real Time Clock/Calendar |
| X1205 | Real Time Clock/Calendar |
| X1205S8 | Real Time Clock/Calendar |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X1203S8 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:IC-SMD-RTC WITH EEPROM |
| X1203S8I | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Real-Time Clock |
| X1203V8 | 制造商:Intersil Corporation 功能描述: |
| X-120-499 | 制造商:Brady Corporation 功能描述:VIAL SIDE/TOP COMBO-B499 .50X1X.375DIA |
| X1205 | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Real Time Clock/Calendar |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。