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参数资料
| 型号： | ISL12026 |
| 厂商： | Intersil Corporation |
| 英文描述： | Real Time Clock/Calendar with EEPROM(带EEPROM实时时钟/日历) |
| 中文描述： | 实时时钟/日历带有EEPROM（带EEPROM的实时时钟/日历） |
| 文件页数： | 4/4页 |
| 文件大小： | 112K |
| 代理商： | ISL12026 |
4
Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to
verify that the Application Note or Technical Brief is current before proceeding.
For information regarding Intersil Corporation and its products, see www.intersil.com
TB460.0
February 16, 2005
TABLE 3. REPLACING THE X1228 WITH THE ISL12028
FUNCTION
OLD X1228
NEW ISL12028
AFFECTS
SOFTWARE
Battery Switchover
Device switches to battery mode once
V
CC
<V
BAT
Device switches to battery when 1)
V
CC
<V
BAT
AND
2)
V
CC
<
V
RESET
with option to work the
old way (called "LP Mode")
NO
Battery Switchover
Hysteresis on V
DD
negative transistion
only in legacy mode
Hysteresis on both V
DD
negative and positive
transistions
NO
Battery Current
1.25μA battery backup current
800nA battery backup current
NO
Power Supply
Min rise/fall times for V
CC
only
Max slew rate for V
DD
NO
Reset Trip Voltages
4 available reset thresholds with ±2.5%
accuracy (old floating gate reference)
5 available reset thresholds with ±1.5%
accuracy (more accurate bandgap)
NO
Reset Trip Voltages
Thresholds adjusted using complicated
analog voltage setting procedure
Thresholds programmed (1 of 5) using
EEPROM register
NO
I
2
C Operation with Battery
Device could work as long as
V
BAT
>V
DD
>V
RESET
No reset, no I
2
C communication
Selectable operation whether
I
2
C
is active in
battery backup
NO
Operation with NO
Oscillator
Reset will occur with no battery,
I
2
C
can
communicate
NO
EEPROM
64-byte page write
16-byte page write
YES
Status Register
(None)
Status bit to indicate oscillator stopped
NO - Optional additional
functionality
Status Register
Legacy switchover only
BSW mode bit to change from legacy to
standard mode for battery switchover
NO - Optional additional
functionality
Control Registers
(None)
Memory map to expand slightly from addition
of bits
NO - Optional additional
functionality
RTC Registers
Byte write or page write
Page write ONLY -
No single byte writes to
setup RTC registers
YES
Pin Names
IRQ-/PHZ
IRQ/Fout
NO
Pin Names
V
BACK
V
BAT
NO
Pin Names
V
CC
V
DD
NO
Clock Inputs
External clocking on X1 with special input No external clocking
NO
Technical Brief 460
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL12026_08 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Real Time Clock/Calendar with I2C Bus? and EEPROM |
| ISL12026_10 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Real Time Clock/Calendar with I2C Bus? and EEPROM |
| ISL12026A | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Real Time Clock/Calendar with I2C Bus? and EEPROM |
| ISL12026AIBZ | 功能描述:实时时钟 REAL TIME CLK/CLNDR W/EEPROM IN 8LD W 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 |
| ISL12026AIBZ-T | 功能描述:实时时钟 REAL TIME CLK/CLNDR W/EEPROM 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 |
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