FN6755.1 March 3, 2011 NOTE: “X” is “Don’t care”; it can be set to 0 or 1. Following is example of an Alarm1 Interrupt :
參數(shù)資料
型號： ISL12057IRUZ-T
廠商： Intersil
文件頁數(shù)： 3/17頁
文件大?。?/td> 0K
描述： IC RTC/CALENDAR I2C 8-UTDFN
標(biāo)準(zhǔn)包裝： 3,000
類型： 時鐘/日歷
特點： 警報器，閏年
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 ~ 3.6 V
電壓 - 電源，電池： 1.4 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-UFDFN
供應(yīng)商設(shè)備封裝： 8-µTDFN（2x2）
包裝： 帶卷 (TR)
11
FN6755.1
March 3, 2011
NOTE: “X” is “Don’t care”; it can be set to 0 or 1.
Following is example of an Alarm1 Interrupt
: a single alarm
will occur on Monday at 11:30 a.m. (Monday is when DW =
2). Set the Alarm1 registers as follows:
After these registers are set, an alarm is generated when the
RTC advances to exactly 11:30 a.m. on January 1 (after
seconds changes from 59 to 00) by setting the A1F bit in the
status register to “1”.
Alarm2 Registers
Addresses [Address 12h to 14h]
The Alarm2 register bytes are set up identically to the RTC
register bytes except that the MSB of each byte functions as
an enable bit (enable = “0”). These enable bits specify which
alarm registers (minutes, hour, and date/day) are used to
make the comparison. When all the enable bits are set to “1”,
Alarm2 will trigger once per minute. Note that there are no
alarm bytes for seconds, month, and year.
The Alarm2 function works as a comparison between the
Alarm2 registers and the RTC registers. As the RTC
advances, Alarm2 is triggered when a match occurs
between the Alarm2 registers and the RTC registers. Any
one Alarm2 register, multiple registers, or all registers can be
enabled for a match.
To clear Alarm2, the A2F status bit must be set to “0” with a
write.
NOTE: “X” is “Don’t care”; it can be set to 0 or 1.
Following is example of Alarm2 Interrupt
: a single alarm will
occur on the first day of every month at 20:00 military time.
Set the Alarm2 registers as follows:
After these registers are set, an alarm is generated when the
RTC advances to exactly 20:00 on Monday (after minutes
changes from 59 to 00) by setting the A2F bit in the status
register to “1”.
I2C Serial Interface
The ISL12057 supports a bi-directional, bus-oriented
protocol. The protocol defines any device that sends data
X
(see Note)
1101
Match Hour
0
1110
Match Date
1
1110
Match Day
0
0011
Match Second and Minute
0
0101
Match Second and Hour
0
0000
Match Second, Minute
and Hour
.
0
1000
Match Minute Hour and
Date
0
0000
Match Second, Minute
Hour and Date
.
1
1000
Match Minute, Hour, and
Day
1
0000
Match Second, Minute,
Hour, and Day
ALARM1
REGISTER
BIT
DESCRIPTION
76 543210 HEX
A1SC
10 000000
80h Seconds disabled
A1MN
00 110000
30h Minutes set to 30,
enabled
A1HR
01 010001
51h Hours set to 11am,
enabled
A1DW/DT 01 000010
42h Day set to 1,
enabled
TABLE 6. ALARM1 INTERRUPT WITH ENABLE BITS
SELECTION (Continued)
A1DW/DT A1M1 A1M2 A1M3 A1M4
ALARM1 INTERRUPT
TABLE 7. ALARM2 INTERRUPT WITH ENABLE BITS
SELECTION
A2DW/DT A2M2 A2M3 A2M4
ALARM2 INTERRUPT
X
(see Note)
1
Every Minute (Second=00)
X
0
1
Match Minute
X
1
0
1
Match Hour
0
1
0
Match Date
1
110
Match Day
X
0
1
Match Minute and Hour
0
1
0
Match Hour and Date
0
1
0
Match Minute and Date
0
Match Minute, Hour, and Date
1
0
1
0
Match Minute and Day
1
0
Match Hour and Day
1
0
Match Minute, Hour, and Day
ALARM2
REGISTER
BIT
DESCRIPTION
7 6543210 HEX
A2MN
1 0000000
80h Minutes disabled
A2HR
0 0100000
20h Hours set to 20,
enabled
A2DW/DT 0 0000001
01h Date set to 1st,
enabled
ISL12057
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參數(shù)描述
ISL12057IUZ 功能描述:實時時鐘 REAL TIME CLK W/ ALARM DS1337 COMP 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(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
ISL12057IUZ-T 功能描述:實時時鐘 REAL TIME CLK W/ ALARM DS1337 COMP 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(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
ISL12058 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Low Cost and Low Power I2C-Bus? Real Time Clock/Calendar
ISL12058IBZ 功能描述:實時時鐘 REAL TIME CLK W/ ALARM & TIMR FUNCTNS 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(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
ISL12058IBZ-T 功能描述:實時時鐘 REAL TIME CLK W/ ALARM & TIMR FUNCTNS 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(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
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