參數(shù)資料
型號(hào)： DS1305E
英文描述： Serial Alarm Real Time Clock RTC
中文描述： 串行實(shí)時(shí)時(shí)鐘鬧鐘時(shí)鐘
文件頁(yè)數(shù)： 6/22頁(yè)
文件大小： 257K
代理商： DS1305E
DS1305
6 of 22
RTC REGISTERS
Figure 3
RTC Registers DS1305
HEX ADDRESS
READ WRITE
00H
01H
02H
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
RANGE
80H
81H
82H
0
0
0
10 SEC
10 MIN
10
P/A
0
10 DATE
10 MONTH
10 YEAR
SEC
MIN
HOURS
00-59
00-59
01-12 + P/A
00-23
01-07
1-31
01-12
00-99
12/2
4
0
0
0
10 HR
03H
04H
05H
06H
83H
84H
85H
86H
0
0
0
0
DAY
DATE
MONTH
YEAR
Alarm 0
07H
08H
09H
87H
88H
89H
M
M
M
10 SEC ALARM
10 MIN ALARM
10
12/2
4
P/A
0
0
SEC ALARM
MIN ALARM
HOUR ALARM
00-59
00-59
01-12 + P/A
00-23
01-07
10 HR
0AH
8AH
M
0
DAY ALARM
Alarm 1
0BH
0CH
0DH
8BH
8CH
8DH
M
M
M
10 SEC ALARM
10 MIN ALARM
10
12/2
4
P/A
0
0
SEC ALARM
MIN ALARM
HOUR ALARM
00-59
00-59
01-12 + P/A
00-23
01-07
10 HR
0EH
0FH
10H
11H
12-1FH
8EH
8FH
90H
91H
92-9FH
M
0
DAY ALARM
CONTROL REGISTER
STATUS REGISTER
TRICKLE CHARGER REGISTER
RESERVED
Range For Alarm Registers Does Not Include Mask’m’ Bits.
The DS1305 can be run in either 12-hour or 24-hour mode. Bit 6 of the hours register is defined as the
12- or 24-hour mode select bit. When high, the 12-hour mode is selected. In the 12-hour mode, bit 5 is
the AM/PM bit with logic high being PM. In the 24-hour mode, bit 5 is the second 10-hour bit (20-23
hours).
The DS1305 contains two time of day alarms. Time of Day Alarm 0 can be set by writing to registers
87h to 8Ah. Time of Day Alarm 1 can be set by writing to registers 8Bh to 8Eh. The alarms can be
programmed (by the INTCN bit of the Control Register) to operate in two different modes - each alarm
can drive its own separate interrupt output or both alarms can drive a common interrupt output. Bit 7 of
each of the time of day alarm registers are mask bits (Table 1). When all of the mask bits are logic 0, a
time of day alarm will only occur once per week when the values stored in timekeeping registers 00h to
03h match the values stored in the time of day alarm registers. An alarm will be generated every day
when bit 7 of the day alarm register is set to a logic 1. An alarm will be generated every hour when bit 7
of the day and hour alarm registers is set to a logic 1. Similarly, an alarm will be generated every minute
when bit 7 of the day, hour and minute alarm registers is set to a logic 1. When bit 7 of the day, hour,
minute and seconds alarm registers is set to a logic 1, alarm will occur every second.
相關(guān)PDF資料
PDF描述
DS1305N Serial Alarm Real Time Clock RTC
DS1306EN Serial Alarm Real Time Clock RTC
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DS1306E Serial Alarm Real Time Clock RTC
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS1305E/R 制造商:DALLAS 制造商全稱(chēng):Dallas Semiconductor 功能描述:Serial Alarm Real-Time Clock
DS1305E/T 制造商:DALLAS 制造商全稱(chēng):Dallas Semiconductor 功能描述:Serial Alarm Real-Time Clock
DS1305E/T&R 制造商:Maxim Integrated Products 功能描述:IC RTC SERIAL ALARM 20-TSSOP
DS1305E/T&R 功能描述:實(shí)時(shí)時(shí)鐘 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線(xiàn)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
DS1305E/TR 制造商:MAXIM 制造商全稱(chēng):Maxim Integrated Products 功能描述:Serial Alarm Real-Time Clock
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