参数资料
型号: X1286A8
厂商: Intersil
文件页数: 15/25页
文件大小: 0K
描述: IC RTC/CAL/CPU SUP EE 8EIAJSOIC
标准包装: 94
类型: 时钟/日历
特点: 警报器,闰年,监控器,监视计时器
时间格式: HH:MM:SS:hh(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: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.209",5.30mm 宽)
供应商设备封装: 8-SOIC
包装: 管件
22
FN8101.1
April 14, 2006
devices have an IRQ- output which can be checked by
setting an alarm for each minute. Using the pulse
interrupt mode setting, the once-per-minute interrupt
functions as an indication of proper oscillation.
Backup Battery Operation
Many types of batteries can be used with the Intersil
RTC products. 3.0V or 3.6V Lithium batteries are
appropriate, and sizes are available that can power a
Intersil RTC device for up to 10 years. Another option
is to use a supercapacitor for applications where Vcc
may disappear intermittently for short periods of time.
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 superca-
pacitor, which is connected to the Vback pin. Do not
use the diode to charge a battery (especially lithium
batteries!).
Figure 16. Supercapactor charging circuit
Since the battery switchover occurs at Vcc=Vback-
0.1V (see Figure 16), 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 9:
Table 9. 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
X1286
相关PDF资料
PDF描述
X1288V14Z-4.5AT1 IC RTC/CAL/CPU SUP EE 14-TSSOP
X1288V14Z-2.7AT1 IC RTC/CAL/CPU SUP EE 14-TSSOP
X1288V14Z-2.7T1 IC RTC/CAL/CPU SUP EE 14-TSSOP
X1288V14Z-4.5A IC RTC/CAL/CPU SUP EE 14-TSSOP
X1288V14Z-2.7 IC RTC/CAL/CPU SUP EE 14-TSSOP
相关代理商/技术参数
参数描述
X1286A8I 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Intersil Real Time Clock/Calendar/CPU Supervisor with EEPROM X1286
X1286A8IT1 功能描述:IC RTC/CAL/CPU SUP EE 8EIAJSOIC 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
X1286A8T1 功能描述:IC RTC/CAL/CPU SUP EE 8EIAJSOIC 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
X1286V14 功能描述:IC RTC/CAL/CPU SUP EE 14-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
X1286V14I 功能描述:IC RTC/CAL/CPU SUP EE 14-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