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参数资料
| 型号： | DS1743W-120IND+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/17页 |
| 文件大小： | 0K |
| 描述： | IC RTC RAM Y2K 3.3V 120NS 28EDIP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 12 |
| 类型： | 时钟/日历 |
| 特点： | 闰年，NVSRAM，Y2K |
| 存储容量： | 8KB |
| 时间格式： | HH:MM:SS（24 小时） |
| 数据格式： | YY-MM-DD-dd |
| 接口： | 并联 |
| 电源电压： | 2.97 V ~ 3.63 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 28-DIP 模块（0.600"，15.24mm） |
| 供应商设备封装： | 28-EDIP |
| 包装： | 管件 |
| 产品目录页面： | 1434 (CN2011-ZH PDF) |
DS1743/DS1743P Y2K-Compliant, Nonvolatile Timekeeping RAMs
5 of 17
Figure 1. Block Diagram
Table 1. Truth Table
VCC
CE
CE2 OE WE
MODE
DQ
POWER
VCC > VPF
VIH
X
Deselect
High-Z
Standby
X
VIL
X
Deselect
High-Z
Standby
VIL
VIH
X
VIL
Write
Data In
Active
VIL
VIH
VIL VIH
Read
Data Out
Active
VIL
VIH
VIH VIH
Read
High-Z
Active
VSO < VCC < VPF
X
Deselect
High-Z
CMOS Standby
VCC<VSO<VPF
X
Deselect
High-Z
Data-Retention
Mode
SETTING THE CLOCK
As shown in Table 2, bit 7 of the Control register is the W (write) bit. Setting the W bit to 1 halts updates
to the DS1743 registers. The user can subsequently load correct date and time values into all eight
registers, followed by a write cycle of 00h to the Control register to clear the W bit and transfer those new
settings into the clock, allowing timekeeping operations to resume from the new set-point.
Again referring to Table 2, bit 6 of the Control register is the R (read) bit. Setting the R bit to 1 halts
updates to the DS1743 registers. The user can subsequently read the date and time values from the eight
registers without those contents possibly changing during those I/O operations. A subsequent write cycle
of 00h to the Control register to clear the R bit allows timekeeping operations to resume from the previous
set-point.
The pre-existing contents of the Control register bits 0:5 (Century value) are ignored/unmodified by a
write cycle to Control if either the W or R bits are being set to 1 in that write operation.
The pre-existing contents of the Control register bits 0:5 (Century value) will be modified by a write cycle
to Control if the W bit is being cleared to 0 in that write operation.
Dallas
Semiconductor
DS1743
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1743W-120IND+ | 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 |
| DS1743W150 | 制造商:Maxim Integrated Products 功能描述: |
| DS1743W-150 | 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 |
| DS1743W-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 |
| DS1743WP-120 | 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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