- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385273 > DS3234 (Maxim Integrated Products, Inc.) Extremely Accurate SPI Bus RTC with Integrated Crystal and SRAM PDF資料下載
參數(shù)資料
| 型號： | DS3234 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Extremely Accurate SPI Bus RTC with Integrated Crystal and SRAM |
| 中文描述： | 高精度、SPI總線RTC，集成晶體和SRAM |
| 文件頁數(shù)： | 19/20頁 |
| 文件大?。?/td> | 328K |
| 代理商： | DS3234 |
D
Extremely Accurate SPI Bus RTC with
Integrated Crystal and SRAM
____________________________________________________________________
19
Data transfers can occur one byte at a time or in multi-
ple-byte burst mode. After
CS
is driven low, an address
is written to the DS3234. After the address, one or more
data bytes can be written or read. For a single-byte
transfer, one byte is read or written and then
CS
is dri-
ven high. For a multiple-byte transfer, however, multiple
bytes can be read or written after the address has been
written (Figure 5). Each read or write cycle causes the
RTC register address to automatically increment, which
continues until the device is disabled. The address
wraps to 00h after incrementing to 13h (during a read)
and wraps to 80h after incrementing to 93h (during a
write). An updated copy of the time is loaded into the
user buffers upon the falling edge of
CS
and each time
the address pointer increments from 13h to 00h.
Because the internal and user copies of the time are
only synchronized on these two events, an alarm condi-
tion can occur internally and activate the
INT/
SQW pin
independently of the user data.
If the SRAM is accessed by reading (address 19h) or
writing (address 99h) the SRAM data register, the con-
tents of the SRAM address register are automatically
incremented after the first access, and all data cycles
will use the SRAM data register.
Handling, PC Board Layout,
and Assembly
The DS3234 package contains a quartz tuning-fork
crystal. Pick-and-place equipment can be used, but
precautions should be taken to ensure that excessive
shock and vibration are avoided. Ultrasonic cleaning
should be avoided to prevent damage to the crystal.
Avoid running signal traces under the package, unless
a ground plane is placed between the package and the
signal line. All N.C. (no connect) pins must be connect-
ed to ground.
CS
SCLK
DIN
DOUT
HIGH IMPEDANCE
ADDRESS
BYTE
ADDRESS
BYTE
DATA BYTE 0
DATA BYTE 1
DIN
DATA BYTE N
DATA
BYTE 0
DATA
BYTE 1
DATA
BYTE N
WRITE
READ
Figure 5. SPI Multiple-Byte Burst Transfer
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS3234S | Extremely Accurate SPI Bus RTC with Integrated Crystal and SRAM |
| DS3234SN | Extremely Accurate SPI Bus RTC with Integrated Crystal and SRAM |
| DS33Z11 | Ethernet Mapper |
| DS33ZH11 | Ethernet Mapper |
| DS3803 | 1024K Flexible NV SRAM SIMM(1024K靈活的非易失性SRAM SIMM) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS3234_07 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Extremely Accurate SPI Bus RTC with Integrated Crystal and SRAM |
| DS3234_08 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Extremely Accurate SPI Bus RTC with Integrated Crystal and SRAM |
| DS3234_10 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Extremely Accurate SPI Bus RTC with Integrated Crystal and SRAM |
| DS3234_BREAKOUT_ | 制造商:MCM 功能描述:DS3234 BREAKOUT BOARD 制造商:PREMIER FARNELL 功能描述:DS3234 BREAKOUT BOARD |
| DS3234_BREAKOUT_B34 | 制造商:Distributed By MCM 功能描述:DS3234 Real Time Clock Breakout Board |
發(fā)布緊急采購，3分鐘左右您將得到回復。