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鍙冩暩(sh霉)璩囨枡
| 鍨嬭櫉锛� | DS3231SN# |
| 寤犲晢锛� | Maxim Integrated Products |
| 鏂囦欢闋佹暩(sh霉)锛� | 3/20闋� |
| 鏂囦欢澶у皬锛� | 0K |
| 鎻忚堪锛� | IC RTC W/TCXO 16-SOIC |
| 鐢�(ch菐n)鍝佸煿瑷撴ā濉婏細 | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 妯欐簴鍖呰锛� | 1 |
| 椤炲瀷锛� | 鏅傞悩/鏃ユ |
| 鐗归粸锛� | 璀﹀牨鍣紝闁忓勾锛屾柟娉㈣几鍑猴紝TCXO/鏅堕珨 |
| 鏅傞枔鏍煎紡锛� | HH:MM:SS锛�12/24 灏忔檪锛� |
| 鏁�(sh霉)鎿�(j霉)鏍煎紡锛� | YY-MM-DD-dd |
| 鎺ュ彛锛� | I²C锛�2 绶氫覆鍙� |
| 闆绘簮闆诲锛� | 2.3 V ~ 5.5 V |
| 闆诲 - 闆绘簮锛岄浕姹狅細 | 2.3 V ~ 5.5 V |
| 宸ヤ綔婧害锛� | -40°C ~ 85°C |
| 瀹夎椤炲瀷锛� | 琛ㄩ潰璨艰 |
| 灏佽/澶栨锛� | 16-SOIC锛�0.295"锛�7.50mm 瀵級 |
| 渚涙噳鍟嗚ō鍌欏皝瑁濓細 | 16-SOIC W |
| 鍖呰锛� | 绠′欢 |
| 鐢�(ch菐n)鍝佺洰閷勯爜闈細 | 1434 (CN2011-ZH PDF) |
绗�1闋�绗�2闋�鐣跺墠绗�3闋�绗�4闋�绗�5闋�绗�6闋�绗�7闋�绗�8闋�绗�9闋�绗�10闋�绗�11闋�绗�12闋�绗�13闋�绗�14闋�绗�15闋�绗�16闋�绗�17闋�绗�18闋�绗�19闋�绗�20闋�
Extremely Accurate I2C-Integrated
RTC/TCXO/Crystal
Maxim Integrated
11
DS3231
Figure 1. Timekeeping Registers
Note: Unless otherwise specified, the registers鈥� state is not defined when power is first applied.
ADDRESS
BIT 7
MSB
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
LSB
FUNCTION
RANGE
00h
0
10 Seconds
Seconds
00鈥�59
01h
0
10 Minutes
Minutes
00鈥�59
AM/PM
02h
0
12/
24
20 Hour
10 Hour
Hour
Hours
1鈥�12 +
AM/PM
00鈥�23
03h
0
Day
1鈥�7
04h
0
10 Date
Date
01鈥�31
05h
Century
0
10 Month
Month
Month/
Century
01鈥�12 +
Century
06h
10 Year
Year
00鈥�99
07h
A1M1
10 Seconds
Seconds
Alarm 1 Seconds
00鈥�59
08h
A1M2
10 Minutes
Minutes
Alarm 1 Minutes
00鈥�59
AM/PM
09h
A1M3
12/
24
20 Hour
10 Hour
Hour
Alarm 1 Hours
1鈥�12 +
AM/PM
00鈥�23
Day
Alarm 1 Day
1鈥�7
0Ah
A1M4
DY/
DT
10 Date
Date
Alarm 1 Date
1鈥�31
0Bh
A2M2
10 Minutes
Minutes
Alarm 2 Minutes
00鈥�59
AM/PM
0Ch
A2M3
12/
24
20 Hour
10 Hour
Hour
Alarm 2 Hours
1鈥�12 +
AM/PM
00鈥�23
Day
Alarm 2 Day
1鈥�7
0Dh
A2M4
DY/
DT
10 Date
Date
Alarm 2 Date
1鈥�31
0Eh
EOSC
BBSQW
CONV
RS2
RS1
INTCN
A2IE
A1IE
Control
鈥�
0Fh
OSF
0
EN32kHz
BSY
A2F
A1F
Control/Status
鈥�
10h
SIGN
DATA
Aging Offset
鈥�
11h
SIGN
DATA
MSB of Temp
鈥�
12h
DATA
0
LSB of Temp
鈥�
Address Map
Figure 1 shows the address map for the DS3231 time-
keeping registers. During a multibyte access, when the
address pointer reaches the end of the register space
(12h), it wraps around to location 00h. On an I2C
START or address pointer incrementing to location 00h,
the current time is transferred to a second set of regis-
ters. The time information is read from these secondary
registers, while the clock may continue to run. This
eliminates the need to reread the registers in case the
main registers update during a read.
I2C Interface
The I2C interface is accessible whenever either VCC or
VBAT is at a valid level. If a microcontroller connected
to the DS3231 resets because of a loss of VCC or other
event, it is possible that the microcontroller and
DS3231 I2C communications could become unsyn-
chronized, e.g., the microcontroller resets while read-
ing data from the DS3231. When the microcontroller
resets, the DS3231 I2C interface may be placed into a
known state by toggling SCL until SDA is observed to
be at a high level. At that point the microcontroller
should pull SDA low while SCL is high, generating a
START condition.
Clock and Calendar
The time and calendar information is obtained by read-
ing the appropriate register bytes. Figure 1 illustrates
the RTC registers. The time and calendar data are set
or initialized by writing the appropriate register bytes.
The contents of the time and calendar registers are in
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鐩搁棞浠ｇ悊鍟�/鎶€琛撳弮鏁�(sh霉) |
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| DS3231SN# | 鍔熻兘鎻忚堪:瀵︽檪鏅傞悩 Integrated RTC/TCXO/Crystal RoHS:鍚� 鍒堕€犲晢:Microchip Technology 鍔熻兘:Clock, Calendar. Alarm RTC 绺界窔鎺ュ彛:I2C 鏃ユ湡鏍煎紡:DW:DM:M:Y 鏅傞枔鏍煎紡:HH:MM:SS RTC 瀛樺劜瀹归噺:64 B 闆绘簮闆诲-鏈€澶�:5.5 V 闆绘簮闆诲-鏈€灏�:1.8 V 鏈€澶у伐浣滄韩搴�:+ 85 C 鏈€灏忓伐浣滄韩搴�: 瀹夎棰ㄦ牸:Through Hole 灏佽 / 绠遍珨:PDIP-8 灏佽:Tube |
| DS3231SN#T&R | 鍒堕€犲晢:Maxim Integrated Products 鍔熻兘鎻忚堪:DS3231 16P SOIC ACC RTC 33V IND 鍒堕€犲晢:Maxim Integrated Products 鍔熻兘鎻忚堪:REAL TIME CLOCK SERL 16SOIC W - Tape and Reel 鍒堕€犲晢:Maxim Integrated Products 鍔熻兘鎻忚堪:IC RTC W/TCXO 16-SOIC 鍒堕€犲晢:Maxim Integrated Products 鍔熻兘鎻忚堪:Real Time Clock Integrated RTC/TCXO/Crystal |
| DS3231SN#T&R | 鍔熻兘鎻忚堪:瀵︽檪鏅傞悩 Integrated RTC/TCXO/Crystal RoHS:鍚� 鍒堕€犲晢:Microchip Technology 鍔熻兘:Clock, Calendar. Alarm RTC 绺界窔鎺ュ彛:I2C 鏃ユ湡鏍煎紡:DW:DM:M:Y 鏅傞枔鏍煎紡:HH:MM:SS RTC 瀛樺劜瀹归噺:64 B 闆绘簮闆诲-鏈€澶�:5.5 V 闆绘簮闆诲-鏈€灏�:1.8 V 鏈€澶у伐浣滄韩搴�:+ 85 C 鏈€灏忓伐浣滄韩搴�: 瀹夎棰ㄦ牸:Through Hole 灏佽 / 绠遍珨:PDIP-8 灏佽:Tube |
| DS3231SN/T&R | 鍒堕€犲晢:Maxim Integrated Products 鍔熻兘鎻忚堪:REAL TIME CLOCK SERL 16SOIC W - Tape and Reel 鍒堕€犲晢:Maxim Integrated Products 鍔熻兘鎻忚堪:Real Time Clock Integrated RTC/TCXO/Crystal |
| DS3231SN/T&R | 鍔熻兘鎻忚堪:瀵︽檪鏅傞悩 Integrated RTC/TCXO/Crystal RoHS:鍚� 鍒堕€犲晢:Microchip Technology 鍔熻兘:Clock, Calendar. Alarm RTC 绺界窔鎺ュ彛:I2C 鏃ユ湡鏍煎紡:DW:DM:M:Y 鏅傞枔鏍煎紡:HH:MM:SS RTC 瀛樺劜瀹归噺:64 B 闆绘簮闆诲-鏈€澶�:5.5 V 闆绘簮闆诲-鏈€灏�:1.8 V 鏈€澶у伐浣滄韩搴�:+ 85 C 鏈€灏忓伐浣滄韩搴�: 瀹夎棰ㄦ牸:Through Hole 灏佽 / 绠遍珨:PDIP-8 灏佽:Tube |
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