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參數(shù)資料
| 型號(hào)： | DS1307 |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | XO, clock |
| 英文描述： | 64 X 8 Serial Real Time Clock(64 X 8 串行實(shí)時(shí)時(shí)鐘) |
| 中文描述： | 1 TIMER(S), REAL TIME CLOCK, PDIP8 |
| 封裝： | DIP-8 |
| 文件頁(yè)數(shù)： | 1/11頁(yè) |
| 文件大?。?/td> | 81K |
| 代理商： | DS1307 |
DS1307
64 X 8 Serial Real Time Clock
DS1307
022798 1/11
FEATURES
Real time clock counts seconds, minutes, hours, date
of the month, month, day of the week, and year with
leap year compensation valid up to 2100
56 byte nonvolatile RAM for data storage
2–wire serial interface
Programmable squarewave output signal
Automatic power fail detect and switch circuitry
Consumes less than 500 nA in battery backup mode
at 25
°
C
Optional industrial temperature range –40
°
C to
+85
°
C (IND)
Available in 8–pin DIP or SOIC
ORDERING INFORMATION
DS1307
Serial Timekeeping Chip;
8–pin DIP
Serial Timekeeping Chip;
8–pin SOIC (150 mil)
8–pin DIP (IND)
8–pin SOIC (IND)
DS1307Z
DS1307N
DS1307ZN
PIN ASSIGNMENT
8
7
6
5
V
CC
SQW/OUT
SCL
SDA
1
2
3
4
X1
X2
V
BAT
GND
8
7
6
5
1
2
3
4
X1
X2
V
BAT
GND
V
CC
SQW/OUT
SCL
SDA
DS1307 8–PIN DIP (300 MIL)
DS1307Z 8–PIN SOIC (150 MIL)
PIN DESCRIPTION
V
CC
X1, X2
V
BAT
GND
SDA
SCL
SQW/OUT
– Primary Power Supply
– 32.768 KHz Crystal Connection
– +3 Volt Battery Input
– Ground
– Serial Data
– Serial Clock
– Square wave/Output Driver
DESCRIPTION
The DS1307 Serial Real Time Clock is a low power full
BCD clock calendar plus 56 bytes of nonvolatile SRAM.
Address and data are transferred serially via a 2–wire
bi–directional bus. The clock/calendar provides
seconds, minutes, hours, day, date, month, and year
information. The end of the month date is automatically
adjusted for months with less than 31 days, including
corrections for leap year. The clock operates in either
the 24–hour or 12–hour format with AM/PM indicator.
The DS1307 has a built–in power sense circuit which
detects power failures and automatically switches to the
battery supply.
OPERATION
The DS1307 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 a
register address. Subsequent registers can be accessed
sequentially until a STOP condition is executed. When
V
CC
falls below 1.25 x V
BAT
the device terminates an
access in progress and resets the device address
counter. Inputs to the device will not be recognized at this
time to prevent erroneous data from being written to the
device from an out of tolerance system. When V
CC
falls
below V
BAT
the device switches into a low current battery
backup mode. Upon power up, the device switches from
battery to V
CC
when V
CC
is greater than V
BAT
+0.2V and
recognizes inputs when V
CC
is greater than 1.25 x V
BAT
.
The block diagram in Figure 1 shows the main elements
of the Serial Real Time Clock. The following paragraphs
describe the function of each pin.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1330W | 3.3V 256K Nonvolatile SRAM with Battery Monitor(帶電池監(jiān)控的256K非易失性SRAM) |
| DS1330Y | 256K Nonvolatile SRAM with Battery Monitor(帶電池監(jiān)控的3.3V 256K非易失性SRAM) |
| DS1330AB | 256K Nonvolatile SRAM with Battery Monitor(帶電池監(jiān)控的3.3V 256K非易失性SRAM) |
| DS1336 | Afterburner Chip(補(bǔ)燃器芯片) |
| DS1340 | I2C RTC with Trickle Charger |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1307_06 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:64 x 8, Serial, I2C Real-Time Clock |
| DS1307+ | 功能描述:實(shí)時(shí)時(shí)鐘 64x8 Serial I2C RTC 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(shí)間格式:HH:MM:SS RTC 存儲(chǔ)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(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1307+ | 制造商:Maxim Integrated Products 功能描述:IC RTC SERIAL 64X8 8DIP 制造商:Maxim Integrated Products 功能描述:IC, RTC, SERIAL, 64X8, 8DIP 制造商:Maxim Integrated Products 功能描述:IC, RTC, SERIAL, 64X8, 8DIP; Date Format:Day; Date; Month; Year; Clock Format:HH:MM:SS; Clock IC Type:RTC; Supply Voltage Min:4.5V; Supply Voltage Max:5.5V; Digital IC Case Style:DIP; No. of Pins:8; Interface Type:I2C, Serial; ;RoHS Compliant: Yes |
| DS1307FP000 | 制造商:Thomas & Betts 功能描述:100A,CON,3P4W,MG,307,125/250V |
| DS1307FRA00 | 制造商:Thomas & Betts 功能描述:100A,REC,3P4W,MG,307,AGL,125/250V |
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