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参数资料
| 型号： | DS1248YP70IND |
| 英文描述： | 1024k NV SRAM with Phantom Clock |
| 中文描述： | 1024k非易失SRAM与幻影时钟 |
| 文件页数： | 2/21页 |
| 文件大小： | 285K |
| 代理商： | DS1248YP70IND |
DS1248/DS1248P
2 of 21
ORDERING INFORMATION
DS1248YP–XXXY (5V)
- IND Industrial
- 70
70ns access
blank 32-Pin DIP Module
34-Pin PowerCap Module board*
P
DS1248WP-XXXY (3.3V)
- IND Industrial
- 120
120ns access
blank 32-Pin DIP Module
34-Pin PowerCap Module board*
P
*DS9034PCX (PowerCap) Required:
(Must be ordered separately.)
PIN DESCRIPTION
A
0
–A
16
CE
OE
WE
V
CC
GND
DQ
0
–DQ
7
NC
X1, X2
V
BAT
RST
- Address Inputs
- Chip Enable
- Output Enable
- Write Enable
- Power Supply Input
- Ground
- Data In/Data Out
- No Connection
- Crystal Connection
- Battery Connection
- Reset
DESCRIPTION
The DS1248 1024k NV SRAM with Phantom Clock is a fully static nonvolatile RAM (organized as 128k
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 V
CC
for an out-of-tolerance condition. When such a
condition occurs, the lithium energy source is automatically switched on and writes 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 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 completion of the surface mount process. Mounting the PowerCap after the surface mount
process prevents damage to the crystal and battery because of 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.
相关PDF资料 |
PDF描述 |
|---|---|
| DS1250W | 3.3V 4096k Nonvolatile SRAM |
| DS1251 | 4096k NV SRAM with Phantom Clock |
| DS1251P | 4096k NV SRAM with Phantom Clock |
| DS1251WP | 4096k NV SRAM with Phantom Clock |
| DS1251YP | 4096k NV SRAM with Phantom Clock |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1249AB | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:2048k Nonvolatile SRAM |
| DS1249AB100 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:2048k Nonvolatile SRAM |
| DS1249AB-100 | 功能描述:NVRAM 2048K NV SRAM RoHS:否 制造商:Maxim Integrated 数据总线宽度:8 bit 存储容量:1024 Kbit 组织:128 K x 8 接口类型:Parallel 访问时间:70 ns 电源电压-最大:5.5 V 电源电压-最小:4.5 V 工作电流:85 mA 最大工作温度:+ 70 C 最小工作温度:0 C 封装 / 箱体:EDIP 封装:Tube |
| DS1249AB-100# | 功能描述:NVRAM 2048K NV SRAM RoHS:否 制造商:Maxim Integrated 数据总线宽度:8 bit 存储容量:1024 Kbit 组织:128 K x 8 接口类型:Parallel 访问时间:70 ns 电源电压-最大:5.5 V 电源电压-最小:4.5 V 工作电流:85 mA 最大工作温度:+ 70 C 最小工作温度:0 C 封装 / 箱体:EDIP 封装:Tube |
| DS1249AB-100-IND | 制造商:未知厂家 制造商全称:未知厂家 功能描述:NVRAM (Battery Based) |
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