參數(shù)資料
型號(hào)： DS1391U-33+T&R
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 16/26頁(yè)
文件大?。?/td> 0K
描述： IC RTC W/CHARGER 10-USOP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 3,000
類型： 時(shí)鐘/日歷
特點(diǎn)： 警報(bào)器，閏年，方波輸出，涓流充電器
時(shí)間格式： HH:MM:SS:hh（12/24 小時(shí)）
數(shù)據(jù)格式： YY-MM-DD-dd
接口： SPI
電源電壓： 2.97 V ~ 5.5 V
電壓 - 電源，電池： 1.3 V ~ 5.5 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 10-TFSOP，10-MSOP（0.118"，3.00mm 寬）
供應(yīng)商設(shè)備封裝： 10-µMAX
包裝： 帶卷 (TR)
DS1390–DS1394
Low-Voltage SPI/3-Wire RTCs with
Trickle Charger
23
Maxim Integrated
3-Wire Serial-Data Bus
The DS1392/DS1393 provide a 3-wire serial-data bus,
and support both single-byte and multiple-byte data
transfers for maximum flexibility. The I/O pin is the seri-
al-data input/output pin. The CE input is used to initiate
and terminate a data transfer. The SCLK pin is used to
synchronize data movement between the master
(microcontroller) and the slave (DS1392/DS1393)
devices. Input data is latched on the SCLK rising edge
and output data is shifted out on the SCLK falling edge.
There is one clock for each bit transferred. Address
and data bits are transferred in groups of eight.
Address and data bytes are shifted LSB first into the
I/O pin. Data is transferred out LSB first on the I/O pin
for a read operation.
The address byte is always the first byte entered after
CE is driven high. The MSB (W/R) of this byte deter-
mines if a read or write takes place. If W/R is 0, one or
more read cycles occur. If W/R is 1, one or more write
cycles occur.
Data transfers can be one byte at a time or in multiple-
byte burst mode. After CE is driven high, an address is
written to the DS1392/DS1393. 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 CE is
driven low (Figures 13 and 14). For a multiple-byte
transfer, however, multiple bytes can be read or written
after the address has been written (Figure 15). Each
read or write cycle causes the RTC register address to
automatically increment. Incrementing continues until
the device is disabled. The address wraps to 00h after
incrementing to 0Fh (during a read) and wraps to 80h
after incrementing to 8Fh (during a write). Note, howev-
er, that an updated copy of the time is only loaded into
the user-accessible copy upon the rising edge of CE.
Reading the RTC registers in a continuous loop does
not show the time advancing.
Chip Information
TRANSISTOR COUNT: 11,525
PROCESS: CMOS
SUBSTRATE CONNECTED TO GROUND
Thermal Information
Theta-JA: 180°C/W
Theta-JC: 41.9°C/W
CE
SCLK
I/O
ADDRESS
BYTE
DATA
BYTE 0
DATA
BYTE 1
DATA
BYTE N
Figure 15. 3-Wire Multiple-Byte Burst Transfer
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DS1392 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Low-Voltage SPI/3-Wire RTCs with Trickle Charger
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