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參數(shù)資料
| 型號： | DS1248Y-70 |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | Timer or RTC |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, DMA32 |
| 封裝： | MODULE, DIP-32 |
| 文件頁數(shù)： | 12/21頁 |
| 文件大小： | 279K |
| 代理商： | DS1248Y-70 |
DS1248/DS1248P
2 of 21
ORDERING INFORMATION
DS1251YP–XXXY (5V)
-IND
Industrial
-70
70 ns access
-100
100 ns access
blank 32-pin DIP Module
P
34-pin PowerCap Module board*
DS1251WP-XXXY (3.3V)
-IND
Industrial
-120
120 ns access
-150
150 ns access
blank 32-pin DIP Module
P
34-pin PowerCap Module board*
*DS9034PCX (PowerCap) Required: (must be ordered separately)
PIN DESCRIPTION
A0–A16
– Address Inputs
CE
– Chip Enable
OE
– Output Enable
WE
– Write Enable
VCC
– Power Supply Input
GND
– Ground
DQ0–DQ7
– Data In/Data Out
NC
– No Connection
X1,X2
– Crystal Connection
VBAT
– Battery Connection
RST
– Reset
DESCRIPTION
The DS1248 1024k NV SRAM with Phantom Clock is a fully static nonvolatile RAM (organized as
512k words by 8 bits) with a built–in real time clock. The DS1248 has a self–contained lithium energy
source and control circuitry which constantly monitors VCC for an out–of–tolerance condition. When
such a condition occurs, the lithium energy source is automatically switched on and write protection is
unconditionally enabled to prevent garbled data in both the memory and real time clock.
PACKAGES
The DS1248 is available in two packages (32–pin DIP and 34–Pin PowerCap module). The 32–pin DIP
style module integrates the crystal, lithium energy source, and silicon all in one package. The 34–pin
PowerCap Module Board is designed with contacts for connection to a separate PowerCap (DS9034PCX)
that contains the crystal and battery. This design allows the PowerCap to be mounted on top of the
DS1248P after the completion of the surface mount process. Mounting the PowerCap after the surface
mount process prevents damage to the crystal and battery due to the high temperatures required for solder
reflow.
The PowerCap is keyed to prevent reverse insertion.
The PowerCap Module Board and
PowerCap are ordered separately and shipped in separate containers. The part number for the Powercap
is DS9034PCX.
相關PDF資料 |
PDF描述 |
|---|---|
| DS1248YP-70 | 0 TIMER(S), REAL TIME CLOCK, DMA34 |
| DS1248W-120 | REAL TIME CLOCK, PDIP32 |
| DS1248WP-120 | REAL TIME CLOCK, DMA34 |
| DS1250ABP-70 | 512K X 8 NON-VOLATILE SRAM MODULE, 70 ns, DMA34 |
| DS1250AB-100 | 512K X 8 NON-VOLATILE SRAM MODULE, 100 ns, DIP32 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| DS1248Y-70+ | 功能描述:實時時鐘 1024k NV SRAM w/Phantom Clock RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量: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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1248Y70IND | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:1024k NV SRAM with Phantom Clock |
| DS1248Y-70IND | 功能描述:IC NVSRAM 1MBIT 70NS 32DIP RoHS:否 類別:集成電路 (IC) >> 時鐘/計時 - 實時時鐘 系列:- 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:- 類型:時鐘/日歷 特點:警報器，閏年，SRAM 存儲容量:- 時間格式:HH:MM:SS（12/24 小時） 數(shù)據格式:YY-MM-DD-dd 接口:SPI 電源電壓:2 V ~ 5.5 V 電壓 - 電源，電池:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-WDFN 裸露焊盤 供應商設備封裝:8-TDFN EP 包裝:管件 |
| DS1248Y-70IND+ | 功能描述:實時時鐘 1024k NV SRAM w/Phantom Clock RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量: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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1248YP/WP | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:PowerCap with Crystal |
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