- 您现在的位置：买卖IC网 > PDF目录299011 > DS1244Y-120 256K NV SRAM with Phantom Clock PDF资料下载
参数资料
| 型号： | DS1244Y-120 |
| 英文描述： | 256K NV SRAM with Phantom Clock |
| 中文描述： | 256K非易失SRAM与幻影时钟 |
| 文件页数： | 6/12页 |
| 文件大小： | 100K |
| 代理商： | DS1244Y-120 |
DS1244Y
032697 3/12
PHANTOM CLOCK
REGISTER INFORMATION
The Phantom Clock information is contained in 8 regis-
ters of 8 bits, each of which is sequentially accessed one
bit at a time after the 64–bit pattern recognition se-
quence has been completed. When updating the Phan-
tom Clock registers, each register must be handled in
groups of 8 bits. Writing and reading individual bits with-
in a register could produce erroneous results. These
read/write registers are defined in Figure 2.
Data contained in the Phantom Clock register is in
binary coded decimal format (BCD). Reading and writ-
ing the registers is always accomplished by stepping
through all 8 registers, starting with bit 0 of register 0 and
ending with bit 7 of register 7.
PHANTOM CLOCK REGISTER DEFINITION Figure 1
7
654
32
10
1
100
01
0
011
10
1
010
00
11
0
101
11
00
1
100
01
0
011
10
1
010
00
11
0
101
11
00
C5
3A
A3
5C
C5
3A
A3
5C
BYTE 0
BYTE 1
BYTE 2
BYTE 3
BYTE 4
BYTE 5
BYTE 6
BYTE 7
HEX
VALUE
NOTE:
The pattern recognition in Hex is C5, 3A, A3, 5C, C5, 3A, A3, 5C. The odds of this pattern being accidentally dupli-
cated and causing inadvertent entry to the Phantom Clock is less than 1 in 1019. This pattern is sent to the Phantom
Clock LSB to MSB.
相关PDF资料 |
PDF描述 |
|---|---|
| DS1386P08-120 | RAMified Watchdog Timekeeper |
| DS1386P32-120 | RAMified Watchdog Timekeeper |
| DS1411DB-9 | Serial Port iButton Holder |
| DS1608B-684MSB | 1 ELEMENT, 680 uH, FERRITE-CORE, GENERAL PURPOSE INDUCTOR, SMD |
| DS1608B-475MTD | 1 ELEMENT, 4700 uH, FERRITE-CORE, GENERAL PURPOSE INDUCTOR, SMD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1244Y-150 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| DS1244Y-200 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:256K NV SRAM with Phantom Clock |
| DS1244Y-70 | 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 |
| DS1244Y-70+ | 功能描述:实时时钟 256k NV SRAM w/Phantom Clock 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 |
| DS1244YP/WP | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:PowerCap with Crystal |
发布紧急采购，3分钟左右您将得到回复。