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参数资料
| 型号： | DS2423D/T&R |
| 厂商： | Maxim Integrated |
| 文件页数： | 3/26页 |
| 文件大小： | 0K |
| 描述： | IC SRAM 4KBIT 6FCHIP |
| 标准包装： | 10,000 |
| 格式 - 存储器： | RAM |
| 存储器类型： | SRAM |
| 存储容量： | 4K (256 x 16) |
| 接口： | 1 线 串行 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 6-XBGA，FCBGA |
| 供应商设备封装： | 6-覆晶（2.82x2.54） |
| 包装： | 带卷 (TR) |
DS2423
BLOCK DIAGRAM Figure 1
ADDRESS REGISTERS AND TRANSFER STATUS
Because of the serial data transfer, the DS2423 employs three address registers called TA1, TA2, and E/S
(Figure 6). Registers TA1 and TA2 must be loaded with the target address to which the data will be
written or from which data will be sent to the master upon a Read command. Register E/S acts like a byte
counter and Transfer Status register. It is used to verify data integrity with write commands. Therefore,
the master only has read access to this register. The lower 5 bits of the E/S register indicate the address of
the last byte that has been written to the scratchpad. This address is called Ending Offset. Bit 5 of the E/S
register, called PF or “partial byte flag,” is set if the number of data bits sent by the master is not an
integer multiple of 8. Bit 6 has no function; it always reads 0. Note that the lowest 5 bits of the target
address also determine the address within the scratchpad, where intermediate storage of data will begin.
This address is called byte offset. If the target address (TA1) for a Write command is 03CH for example,
then the scratchpad will store incoming data beginning at the byte offset 1CH and will be full after only 4
bytes. The corresponding ending offset in this example is 1FH. For best economy of speed and efficiency,
the target address for writing should point to the beginning of a new page, i.e., the byte offset will be 0.
Thus the full 32-byte capacity of the scratchpad is available, resulting also in the ending offset of 1FH.
However, it is possible to write one or several contiguous bytes somewhere within a page. The ending
offset together with the Partial Flag support the master checking the data integrity after a Write command.
The highest valued bit of the E/S register, called AA or Authorization Accepted, acts as a flag to indicate
that the data stored in the scratchpad has already been copied to the target memory address. Writing data
to the scratchpad clears this flag.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2423MRAB0 | 制造商:Thomas & Betts 功能描述:300A,NLT,3P4W,MG,423,3P480V |
| DS2423P | 功能描述:静态随机存取存储器 RoHS:否 制造商:Cypress Semiconductor 存储容量:16 Mbit 组织:1 M x 16 访问时间:55 ns 电源电压-最大:3.6 V 电源电压-最小:2.2 V 最大工作电流:22 uA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:TSOP-48 封装:Tray |
| DS2423P/R | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:4kbit 1-Wire RAM with Counter |
| DS2423P/T | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:4kbit 1-Wire RAM with Counter |
| DS2423P/T&R | 功能描述:静态随机存取存储器 RoHS:否 制造商:Cypress Semiconductor 存储容量:16 Mbit 组织:1 M x 16 访问时间:55 ns 电源电压-最大:3.6 V 电源电压-最小:2.2 V 最大工作电流:22 uA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:TSOP-48 封装:Tray |
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