參數(shù)資料
型號: DS3234S#T&R
廠商: Maxim Integrated Products
文件頁數(shù): 19/21頁
文件大?。?/td> 0K
描述: IC RTC W/TCXO 20-SOIC
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 1,000
類型: 時鐘/日歷
特點(diǎn): 警報器,閏年,NVSRAM,方波輸出,TCXO/晶體
存儲容量: 256B
時間格式: HH:MM:SS(12/24 小時)
數(shù)據(jù)格式: YY-MM-DD-dd
接口: SPI
電源電壓: 2 V ~ 5.5 V
電壓 - 電源,電池: 2 V ~ 3.8 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 20-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 20-SOIC W
包裝: 帶卷 (TR)
DS3234
Extremely Accurate SPI Bus RTC with
Integrated Crystal and SRAM
_____________________________________________________________________
7
Typical Operating Characteristics
(VCC = +3.3V, TA = +25°C, unless otherwise noted.)
STANDBY SUPPLY CURRENT
vs. SUPPLY VOLTAGE
DS3234
toc01
VCC (V)
SUPPLY
CURRENT
A)
5.3
4.8
4.3
2.8
3.3
3.8
50
100
150
125
75
25
0
2.3
RST ACTIVE
INPUTS = GND
BATTERY CURRENT
vs. SUPPLY VOLTAGE
DS3234
toc02
SUPPLY VOLTAGE (VBAT)
SUPPLY
CURRENT
(nA)
3.8
3.3
2.8
1100
2100
1850
2600
2350
1600
1350
850
600
2.3
VCC = 0V
BB32kHz = 0
BBSQW = 1
BBSQW = 0
BATTERY CURRENT
vs. TEMPERATURE
DS3234
toc03
TEMPERATURE (
°C)
SUPPLY
CURRENT
(nA)
80
60
40
-20
0
20
700
650
750
800
850
600
-40
VBAT = 3.4V
VBAT = 3.0V
VCC = 0V
BB32kHz = 0
BBSQW = 0
FREQUENCY DEVIATION
vs. TEMPERATURE vs. AGING VALUE
DS3234
toc04
TEMPERATURE (
°C)
FREQUENCY
DEVIATION
(ppm)
80
60
40
-20
020
25
15
5
-5
-15
-25
-35
65
55
45
35
-45
-40
AGING = -128
AGING = -33
AGING = 127
AGING = 0
AGING = 32
ICCA vs. DOUT LOAD
DS3234
toc05
CAPACITANCE (pF)
SUPPLY
CURRENT
A)
40
30
20
10
250
350
300
400
450
500
200
0
SCLK = 4MHz
DELTA TIME AND FREQUENCY
vs. TEMPERATURE
TEMPERATURE (
°C)
DELTA
FREQUENCY
(ppm)
DELTA
TIME
(MIN/YEAR)
80
70
50 60
-10 0 10 20 30 40
-30 -20
-180
-160
-140
-120
-100
-80
-60
-40
-20
0
20
-200
-80
-60
-40
-20
0
-100
-40
DS3234 toc06
CRYSTAL
+20ppm
CRYSTAL
-20ppm
TYPICAL CRYSTAL,
UNCOMPENSATED
DS3234
ACCURACY
BAND
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