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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
(μ
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
(μ
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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相关代理商/技术参数
DS3234S# 制造商:Maxim Integrated Products 功能描述:RTC TCXO CRYSTAL 3.3V 20SOIC 制造商:Maxim Integrated Products 功能描述:RTC, TCXO, CRYSTAL, 3.3V, 20SOIC 制造商:Maxim Integrated Products 功能描述:RTC, TCXO, CRYSTAL, 3.3V, 20SOIC; Date Format:DD:MM:YYYY; Clock Format:HH:MM:SS; Clock IC Type:RTC; Supply Voltage Min:2V; Supply Voltage Max:5.5V; Digital IC Case Style:SOIC; No. of Pins:20; Interface Type:SPI; Operating Temperature;RoHS Compliant: Yes
DS3234S#T&R 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 256BYTE 20SOIC W - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC RTC W/TCXO 20-SOIC
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DS3234S+ 功能描述:实时时钟 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube
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