参数资料
型号: DS2431G+U
厂商: Maxim Integrated Products
文件页数: 10/27页
文件大小: 0K
描述: IC EEPROM 1024BIT 2SFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 50
格式 - 存储器: EEPROMs - 串行
存储器类型: EEPROM
存储容量: 1K(256 x 4)
接口: 1 线 串行
工作温度: -40°C ~ 85°C
封装/外壳: 2-SFN
供应商设备封装: 2-SFN(6x6)
包装: 管件
其它名称: 90-2431G+000
DS2431
1024-Bit, 1-Wire EEPROM
BUS MASTER Tx MEMORY
FUNCTION COMMAND
FROM ROM FUNCTIONS
FLOWCHART (FIGURE 9)
0Fh
WRITE SCRATCHPAD?
N
AAh
READ SCRATCHPAD?
N
TO FIGURE 7b
Y
BUS MASTER Tx
TA1 (T[7:0]), TA2 (T[15:8])
Y
BUS MASTER Rx
TA1 (T[7:0]), TA2 (T[15:8]),
AND E/S BYTE
DS2431
SETS PF = 1
CLEARS AA = 0
SETS E[2:0] = T[2:0]
DS2431 SETS
SCRATCHPAD
BYTE COUNTER = T[2:0]
MASTER Tx DATA BYTE
TO SCRATCHPAD
APPLIES ONLY
IF THE MEMORY
AREA IS NOT
DS2431
INCREMENTS
BYTE COUNTER
BUS MASTER Rx
DATA BYTE FROM
SCRATCHPAD
PROTECTED.
DS2431
INCREMENTS
E[2:0]
MASTER Tx RESET?
Y
IF WRITE PROTECTED ,
THE DS2431 COPIES
THE DATE BYTE FROM
THE TARGET ADDRESS
MASTER Tx RESET?
Y
N
INTO THE SCRATCHPAD.
IF IN EPROM MODE ,
N
N
E[2:0] = 7?
THE DS2431 LOADS
THE BITWISE LOGICAL
AND OF THE TRANSMITTED
N
BYTE COUNTER
BYTE AND THE DATA
= E[2:0]?
Y
T[2:0] = 0?
Y
PF = 0
N
BYTE FROM THE TARGETED
ADDRESS INTO THE
SCRATCHPAD.
Y
BUS MASTER Rx CRC-16
OF COMMAND, ADDRESS,
E/S BYTE, AND DATA BYTES
AS SENT BY THE DS2431
DS2431 Tx CRC-16 OF
COMMAND, ADDRESS,
AND DATA BYTES AS THEY
WERE SENT BY THE BUS
MASTER
BUS MASTER
Rx "1"s
N
MASTER Tx RESET?
Y
BUS MASTER
Rx "1"s
N
MASTER Tx RESET?
Y
FROM FIGURE 7b
TO ROM FUNCTIONS
FLOWCHART (FIGURE 9)
Figure 7a. Memory Function Flowchart
10
Maxim Integrated
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