参数资料
| 型号： | ISL1209IU10Z |
| 厂商： | Intersil |
| 文件页数： | 24/24页 |
| 文件大小： | 0K |
| 描述： | IC RTC LP BATT BACK SRAM 10MSOP |
| 标准包装： | 80 |
| 类型： | 时间事件记录器 |
| 特点： | 警报器，闰年，SRAM |
| 存储容量： | 2B |
| 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： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-MSOP |
| 包装： | 管件 |
| 产品目录页面： | 1245 (CN2011-ZH PDF) |
9
FN6109.4
October 17, 2006
Power Mode, is available to allow direct switching from VDD
to VBAT without requiring VDD to drop below VTRIP. Since
the additional monitoring of VDD vs. VTRIP is no longer
needed, that circuitry is shut down and less power is used
while operating from VDD. Power savings are typically
600nA at VDD = 5V. Low Power Mode is activated via the
LPMODE bit in the control and status registers.
Low Power Mode is useful in systems where VDD is normally
higher than VBAT at all times. The device will switch from
VDD to VBAT when VDD drops below VBAT, with about 50mV
of hysteresis to prevent any switchback of VDD after
switchover. In a system with a VDD = 5V and backup lithium
battery of VBAT = 3V, Low Power Mode can be used.
However, it is not recommended to use Low Power Mode in
a system with VDD = 3.3V ±10%, VBAT ≥ 3.0V, and when
there is a finite I-R voltage drop in the VDD line.
InterSeal Battery Saver
The ISL1209 has the InterSeal Battery Saver which
prevents initial battery current drain before it is first used. For
example, battery-backed RTCs are commonly packaged on
a board with a battery connected. In order to preserve
battery life, the ISL1209 will not draw any power from the
battery source until after the device is first powered up from
the VDD source. Thereafter, the device will switchover to
battery backup mode whenever VDD power is lost.
Event/Tamper Monitor and Detection
The ISL1209 provides an event detection and alarm function
to be used in a wide variety of applications ranging from
security, warranty monitoring, data collection and recording.
The tamper detect input pin, EVIN, can be used as a event
or tamper detection input of an external switch (mechanical
or electronic). When the EVIN pin is a valid HIGH, the
ISL1209 sets the EVT bit in the status register and, can
optionally: 1) Issue an Event output signal (EVDET pin),
2) At the time event occurred, stop the RTC registers from
advancing.
To allow for flexibility of external switches used at the EVIN
pin, the internal pull-up (~1A in full on mode) can be
disabled/enabled. This will allow more flexibility depending
on the capacitive and resistive loading at the EVIN pin.
A noise filter option is also provided for the event monitor
circuit. The EVIN pin has a time based filter where the EVIN
signal must be stable for a period of time to trigger a valid
detection. The time hysteresis filter can vary from 0, 3.9ms,
15.2ms or 31.25ms.
For low power applications the event monitor can be
sampled at a user selectable rate. The EVIN pin can be
always ON or periodically sampled with a frequency of 1/4,
1or 2Hz.
Event Detect Timing Diagram With
Sampling Mode Enabled
Case 1, Switched Opened Before Ipu
Case 2, Switched Opened After Ipu
Case 3, Switched Bounced
The ISL1209 can operate independently or in conjunction
with a microcontroller for low power operation modes or in
battery backup modes.
The event detection circuits operate in either main VDD
power or battery backup mode.
8 clks (8x)
15 clks (8x)
OFF
ON
OPEN
CLOSED
LOW
HIGH
LOW
EVDET
EVIN
EXT.
SWITCH
Ipu
8 clks (8x)
15 clks (8x)
OFF
ON
OPEN
CLOSED
LOW
HIGH
LOW
EVDET
EVIN
EXT.
SWITCH
Ipu
15 clks (8x)
OFF
ON
OPEN
CLOSED
LOW
HIGH
LOW
EVDET
EVIN
EXT.
SWITCH
Ipu
8 clks (8x)
ISL1209
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL1209IU10Z-TK | 功能描述:实时时钟 I2CAL TIME CLK/CLNDR W/EVENT DETCT 10LD 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 |
| ISL1218 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Low Power RTC with Battery Backed SRAM |
| ISL1218IBZ | 功能描述:实时时钟 REAL TIME CLKRTC IN 8LD 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 |
| ISL1218IBZ-T | 功能描述:实时时钟 REAL TIME CLKRTC IN 8LD 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 |
| ISL1218IUZ | 功能描述:实时时钟 REAL TIME CLKRTC IN 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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