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参数资料
| 型号： | DS1742W-150+ |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | XO, clock |
| 英文描述： | Y2KC Nonvolatile Timekeeping RAM |
| 中文描述： | 0 TIMER(S), REAL TIME CLOCK, PDIP24 |
| 封装： | 0.740 INCH, ROHS COMPLIANT, ENCAPSULATED, DIP-24 |
| 文件页数： | 9/16页 |
| 文件大小： | 272K |
| 代理商： | DS1742W-150+ |
DS1742
2 of 16
PIN DESCRIPTION
PIN
NAME
FUNCTION
1
A7
2
A6
3
A5
4
A4
5
A3
6
A2
7
A1
8
A0
19
A10
22
A9
23
A8
Address Input
9
DQ0
10
DQ1
11
DQ2
13
DQ3
14
DQ4
15
DQ5
16
DQ6
17
DQ7
Data Input/Output
12
GND
Ground
18
CE
Active-Low Chip-Enable Input
20
OE
Active-Low Output-Enable Input
21
WE
Active-Low Write-Enable Input
24
VCC
Power-Supply Input
DESCRIPTION
The DS1742 is a full-function, year 2000-compliant (Y2KC), real-time clock/calendar (RTC) and
2k x 8 nonvolatile static RAM. User access to all registers within the DS1742 is accomplished
with a bytewide interface as shown in Figure 1. The RTC information and control bits reside in
the eight uppermost RAM locations. The RTC registers contain century, year, month, date, day,
hours, minutes, and seconds data in 24-hour BCD format. Corrections for the day of the month
and leap year are made automatically.
The RTC clock registers are double-buffered to avoid access of incorrect data that can occur
during clock update cycles. The double-buffered system also prevents time loss as the
timekeeping countdown continues unabated by access to time register data. The DS1742 also
contains its own power-fail circuitry, which deselects the device when the VCC supply is in an
out-of-tolerance condition. This feature prevents loss of data from unpredictable system
operation brought on by low VCC as errant access and update cycles are avoided.
相关PDF资料 |
PDF描述 |
|---|---|
| DS1743-100+ | Y2K-Compliant, Nonvolatile Timekeeping RAMs |
| DS1743-100IND+ | Y2K-Compliant, Nonvolatile Timekeeping RAMs |
| DS1743-85+ | Y2K-Compliant, Nonvolatile Timekeeping RAMs |
| DS1743-85IND+ | Y2K-Compliant, Nonvolatile Timekeeping RAMs |
| DS1743P-100+ | Y2K-Compliant, Nonvolatile Timekeeping RAMs |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1742W-150+ | 功能描述:实时时钟 Timekeeping NV RAM 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 |
| DS1743 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Y2K-Compliant, Nonvolatile Timekeeping |
| DS1743-100 | 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 |
| DS1743-100 IND | 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 |
| DS1743-100+ | 功能描述:实时时钟 Timekeeping NV RAM 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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