参数资料
| 型号： | X1205V8IZT1 |
| 厂商： | Intersil |
| 文件页数： | 11/22页 |
| 文件大小： | 0K |
| 描述： | IC RTC/CALENDAR 2-WIRE 8-TSSOP |
| 标准包装： | 2,500 |
| 类型： | 时钟/日历 |
| 特点： | 警报器，闰年 |
| 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： | 2.7 V ~ 5.5 V |
| 电压 - 电源，电池： | 1.8 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 8-TSSOP |
| 包装： | 带卷 (TR) |
19
FN8097.3
May 2, 2006
Depending on the value of supercapacitor used, backup
time can last from a few days to two weeks (with >1F). A
simple silicon or Schottky barrier diode can be used in
series with Vcc to charge the supercapacitor, which is
connected to the Vback pin. Do not use the diode to
charge a battery (especially lithium batteries!).
Figure 13. Supercapactor charging circuit
Since the battery switchover occurs at Vcc=Vback-
0.1V (see Figure 13), the battery voltage must always
be lower than the Vcc voltage during normal operation
or the battery will be drained.
The summary of conditions for backup battery opera-
tion is given in Table 6:
Table 6. Battery Backup Operation
*since Vback>2.65V is higher than Vtrip, the battery is powering the entire device
2.7-5.5V
Supercapacitor
VSS
VCC
Vback
1. Example Application, Vcc=5V, Vback=3.0V
Condition
Vcc
Vback
Vtrip
Iback
Notes
a. Normal Operation
5.00
3.00
4.38
<<1A
b. Vcc on with no battery
5.00
0
4.38
0
c. Backup Mode
0-1.8
1.8-3.0
4.38
<2A
Timekeeping only
2. Example Application, Vcc=3.3V,Vback=3.0V
Condition
Vcc
Vback
Vtrip
Iback
a. Normal Operation
3.30
3.00
2.65
<<1A
b. Vcc on with no battery
3.30
0
2.65
0
c. Backup Mode
0-1.8
1.8-3.0*
2.65
<2A*
Timekeeping only
d. UNWANTED - Vcc ON, Vback powering
2.65 - 3.30
> Vcc
2.65
up to 3mA
Internal Vcc=Vback
X1205
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相关代理商/技术参数 |
参数描述 |
|---|---|
| X1205V8T1 | 功能描述:IC RTC/CALENDAR 2-WIRE 8-TSSOP RoHS:否 类别:集成电路 (IC) >> 时钟/计时 - 实时时钟 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- 类型:时钟/日历 特点:警报器，闰年，SRAM 存储容量:- 时间格式:HH:MM:SS（12/24 小时） 数据格式:YY-MM-DD-dd 接口:SPI 电源电压:2 V ~ 5.5 V 电压 - 电源，电池:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-WDFN 裸露焊盘 供应商设备封装:8-TDFN EP 包装:管件 |
| X1205V8Z | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:2-Wire RTC Real Time Clock/Calendar |
| X1205V8ZT1 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:2-Wire RTC Real Time Clock/Calendar |
| X1210MKX7R8BB564 | 制造商:Yageo / Phycomp 功能描述:0.56uF 25V SM CAP-X2Y FILTER 1210 X7R 20% Ni Barr w/100% Tin - free partial T/R at 500. |
| X121198-ISD | 制造商:Honeywell Sensing and Control 功能描述:RESISTIVE & OPTICAL |
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