DS1338 I2C RTC with 56-Byte NV RAM 10 of 16 whenever the seconds register is wri" />
鍙冩暩(sh霉)璩囨枡
鍨嬭櫉(h脿o)锛� DS1338U-33+
寤�(ch菐ng)鍟嗭細 Maxim Integrated Products
鏂囦欢闋�(y猫)鏁�(sh霉)锛� 2/16闋�(y猫)
鏂囦欢澶�?銆�?/td> 0K
鎻忚堪锛� IC RTC 56BYTE NV RAM 3.3V 8-USOP
鐢�(ch菐n)鍝佸煿瑷�(x霉n)妯″锛� Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
妯�(bi膩o)婧�(zh菙n)鍖呰锛� 50
椤�(l猫i)鍨嬶細 鏅�(sh铆)閻�/鏃ユ
鐗归粸(di菐n)锛� 闁忓勾锛孨VSRAM锛屾柟娉㈣几鍑�
瀛樺劜(ch菙)瀹归噺锛� 56B
鏅�(sh铆)闁撴牸寮忥細 HH:MM:SS锛�12/24 灏忔檪(sh铆)锛�
鏁�(sh霉)鎿�(j霉)鏍煎紡锛� YY-MM-DD-dd
鎺ュ彛锛� I²C锛�2 绶�(xi脿n)涓插彛
闆绘簮闆诲锛� 3 V ~ 5.5 V
闆诲 - 闆绘簮锛岄浕姹狅細 1.3 V ~ 3.7 V
宸ヤ綔婧害锛� -40°C ~ 85°C
瀹夎椤�(l猫i)鍨嬶細 琛ㄩ潰璨艰
灏佽/澶栨锛� 8-TSSOP锛�8-MSOP锛�0.118"锛�3.00mm 瀵級
渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁濓細 8-uMAX
鍖呰锛� 绠′欢
鐢�(ch菐n)鍝佺洰閷勯爜(y猫)闈細 1433 (CN2011-ZH PDF)
DS1338 I2C RTC with 56-Byte NV RAM
10 of 16
whenever the seconds register is written. Write transfers occur on the acknowledge from the DS1338. Once the
countdown chain is reset, to avoid rollover issues the remaining time and date registers must be written within
1 second. The 1Hz square-wave output, if enabled, transitions high 500ms after the seconds data transfer,
provided the oscillator is already running.
The DS1338 runs in either 12-hour or 24-hour mode. Bit 6 of the hours register is defined as the 12-hour 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 20-hour bit (20鈥�23 hours). If the 12/24-hour mode select is
changed, the hours register must be re-initialized to the new format.
On an I2C START, the current time is transferred to a second set of registers. The time information is read from
these secondary registers, while the clock continues to run. This eliminates the need to re-read the registers in
case of an update of the main registers during a read.
Table 3. RTC and RAM Address Map
ADDRESS
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
FUNCTION
RANGE
00H
CH
10 Seconds
Seconds
00鈥�59
01H
0
10 Minutes
Minutes
00鈥�59
02H
0
12/24
AM
/PM
10
Hour
Hours
1鈥�12
+AM/PM
00鈥�23
20 Hour
03H
0
Day
1鈥�7
04H
0
10 Date
Date
01鈥�31
05H
0
10
Month
01鈥�12
06H
10 Year
Year
00鈥�99
07H
OUT
0
OSF
SQWE
0
RS1
RS0
Control
08H鈥�3FH
RAM 56 x 8
00H鈥揊FH
Note: Bits listed as 鈥�0鈥� always read as a 0.
鐩搁棞(gu膩n)PDF璩囨枡
PDF鎻忚堪
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鍙冩暩(sh霉)鎻忚堪
DS1338U-33/T&R 鍒堕€犲晢:Maxim Integrated Products 鍔熻兘鎻忚堪:REAL TIME CLOCK SERL 56BYTE 8USOP - Tape and Reel 鍒堕€犲晢:Maxim Integrated Products 鍔熻兘鎻忚堪:Real Time Clock I2C Serial RTC w/56 Byte NV RAM
DS1338U-33/T&R 鍔熻兘鎻忚堪:瀵�(sh铆)鏅�(sh铆)鏅�(sh铆)閻� I2C Serial RTC w/56 Byte NV RAM RoHS:鍚� 鍒堕€犲晢:Microchip Technology 鍔熻兘:Clock, Calendar. Alarm RTC 绺界窔(xi脿n)鎺ュ彛:I2C 鏃ユ湡鏍煎紡:DW:DM:M:Y 鏅�(sh铆)闁撴牸寮�:HH:MM:SS RTC 瀛樺劜(ch菙)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�(f膿ng)鏍�:Through Hole 灏佽 / 绠遍珨:PDIP-8 灏佽:Tube
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DS1338U-33+ 鍒堕€犲晢:Maxim Integrated Products 鍔熻兘鎻忚堪:IC RTC YY-MM-DD 56 X 8 OP-8
DS1338U-33+T&R 鍒堕€犲晢:Maxim Integrated Products 鍔熻兘鎻忚堪:REAL TIME CLOCK SERL 56BYTE 8USOP - Tape and Reel 鍒堕€犲晢:Maxim Integrated Products 鍔熻兘鎻忚堪:IC RTC 56BYTE NV RAM 3.3V 8-USOP 鍒堕€犲晢:Maxim Integrated Products 鍔熻兘鎻忚堪:Real Time Clock I2C Serial RTC w/56 Byte NV RAM