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參數(shù)資料
| 型號(hào)： | DS1743-70 |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 13/17頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC RTC RAM Y2K 5V 70NS 28-EDIP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 12 |
| 類(lèi)型： | 時(shí)鐘/日歷 |
| 特點(diǎn)： | 閏年，NVSRAM，Y2K |
| 存儲(chǔ)容量： | 8KB |
| 時(shí)間格式： | HH:MM:SS（24 小時(shí)） |
| 數(shù)據(jù)格式： | YY-MM-DD-dd |
| 接口： | 并聯(lián) |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類(lèi)型： | 通孔 |
| 封裝/外殼： | 28-DIP 模塊（0.600"，15.24mm） |
| 供應(yīng)商設(shè)備封裝： | 28-EDIP |
| 包裝： | 管件 |
| 其它名稱(chēng)： | DS174370 |
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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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1743-70+ | 功能描述:實(shí)時(shí)時(shí)鐘 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線(xiàn)接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1743-85 | 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK PARALLEL 8KBYTE 28PIN EDIP - Bulk |
| DS1743-85+ | 功能描述:實(shí)時(shí)時(shí)鐘 Timekeeping NV RAM RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線(xiàn)接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1743-85IND+ | 功能描述:實(shí)時(shí)時(shí)鐘 Timekeeping NV RAM RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線(xiàn)接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1743P | 制造商:MAXIM 制造商全稱(chēng):Maxim Integrated Products 功能描述:Y2K-Compliant, Nonvolatile Timekeeping |
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