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參數(shù)資料
| 型號： | DS1337U+T&R |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 13/16頁 |
| 文件大小： | 0K |
| 描述： | IC RTC SERIAL 2WIRE LP 8-USOP |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 3,000 |
| 類型： | 時鐘/日歷 |
| 特點： | 警報器，閏年，方波輸出，涓流充電器 |
| 時間格式： | HH:MM:SS（12/24 小時） |
| 數(shù)據(jù)格式： | YY-MM-DD-dd |
| 接口： | I²C，2 線串口 |
| 電源電壓： | 1.8 V ~ 5.5 V |
| 電壓 - 電源，電池： | 1.3 V ~ 1.8 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應商設備封裝： | 8-uMAX |
| 包裝： | 帶卷 (TR) |
DS1337 I
2C Serial Real-Time Clock
BLOCK DIAGRAM
ALARM,
TRICKLE
CHARGE, AND
CONTROL
REGISTERS
SERIAL BUS
INTERFACE AND
ADDRESS
REGISTER
CONTROL
LOGIC
X1
X2
1Hz
1Hz/4.096kHz/8.192kHz/32.768kHz
MUX/
BUFFER
USER BUFFER
(7 BYTES)
CLOCK AND
CALENDAR
REGISTERS
"C" version only
N
SDA
SCL
SQW/
INTB
INTA
DS1337
C
L
C
L
DETAILED DESCRIPTION
The
Block Diagram shows the main elements of the DS1337. As shown, communications to and from the DS1337
occur serially over an I
2C bus. The DS1337 operates as a slave device on the serial bus. Access is obtained by
implementing a START condition and providing a device identification code, followed by data. Subsequent
registers can be accessed sequentially until a STOP condition is executed. The device is fully accessible through
the I
2C interface whenever V
CC is between 5.5V and 1.8V. I
2C operation is not guaranteed when V
CC is below 1.8V.
The DS1337 maintains the time and date when VCC is as low as 1.3V.
OSCILLATOR CIRCUIT
The DS1337 uses an external 32.768kHz crystal. The oscillator circuit does not require any external resistors or
capacitors to operate. Table 1 specifies several crystal parameters for the external crystal. The
Block Diagram
shows a functional schematic of the oscillator circuit. The startup time is usually less than 1 second when using a
crystal with the specified characteristics.
Table 1. Crystal Specifications*
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
Nominal Frequency
fO
32.768
kHz
Series Resistance
ESR
50
k
Load Capacitance
CL
6
pF
*The crystal, traces, and crystal input pins should be isolated from RF generating signals. Refer to
Application Note 58: Crystal Considerations for Dallas Real-Time Clocks
for additional specifications.
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| DS1338 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:I2C RTC with 56-Byte NV RAM |
| DS1338_08 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:I2C RTC with 56-Byte NV RAM |
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| DS1338C-18 | 功能描述:實時時鐘 I2C Serial RTC w/56 Byte NV RAM RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
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