参数资料
| 型号： | DS1339C-2# |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/20页 |
| 文件大小： | 0K |
| 描述： | IC RTC I2C W/ALARM 16-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 45 |
| 类型： | 时钟/日历 |
| 特点： | 警报器，闰年，方波输出，涓流充电器 |
| 时间格式： | HH:MM:SS（12/24 小时） |
| 数据格式： | YY-MM-DD-dd |
| 接口： | I²C，2 线串口 |
| 电源电压： | 1.8 V ~ 2.2 V |
| 电压 - 电源，电池： | 1.3 V ~ 3.7 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC W |
| 包装： | 管件 |
DS1339 I
2C Serial Real-Time Clock
15 of 20
TRICKLE CHARGER REGISTER (10h)
The simplified schematic in Figure 5 shows the basic components of the trickle charger. The trickle-charge select
(TCS) bits (bits 4 to 7) control the selection of the trickle charger. To prevent accidental enabling, only a pattern on
1010 enables the trickle charger. All other patterns disable the trickle charger. The trickle charger is disabled when
power is first applied. The diode-select (DS) bits (bits 2 and 3) select whether or not a diode is connected between
VCC and VBACKUP. The ROUT bits (bits 0 and 1) select the value of the resistor connected between VCC and VBACKUP.
Table 6 shows the bit values.
Table 6. Trickle Charger Register (10h)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
FUNCTION
TCS3
TCS2
TCS1
TCS0
DS1
DS0
ROUT1
ROUT0
X
0
X
Disabled
X
1
X
Disabled
X
0
Disabled
1
0
1
0
1
0
1
No diode, 250
resistor
1
0
1
0
1
0
1
One diode, 250
resistor
1
0
1
0
1
0
No diode, 2k
resistor
1
0
1
0
1
0
1
0
One diode, 2k
resistor
1
0
1
0
1
No diode, 4k
resistor
1
0
1
0
1
0
1
One diode, 4k
resistor
0
Initial power-up values
Warning: The ROUT value of 250
must not be selected whenever V
CC is greater than 3.63V.
The user determines diode and resistor selection according to the maximum current desired for battery or super
cap charging. The maximum charging current can be calculated as illustrated in the following example. Assume
that a 3.3V system power supply is applied to VCC and a super cap is connected to VBACKUP. Also assume that the
trickle charger has been enabled with a diode and resistor R2 between VCC and VBACKUP. The maximum current IMAX
would therefore be calculated as follows:
IMAX = (3.3V - diode drop) / R2 ≈ (3.3V - 0.7V) / 2k ≈ 1.3mA
As the super cap or battery charges, the voltage drop between VCC and VBACKUP decreases and therefore the
charge current decreases.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1339C-2# | 功能描述:实时时钟 I2C Serial RTC 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 |
| DS1339C-2+ | 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 16SOIC W - Bulk |
| DS1339C-3 | 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 |
| DS1339C-3- | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:I2C Serial Real-Time Clock |
| DS1339C-3# | 功能描述:实时时钟 I2C Serial RTC 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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