参数资料
型号: DS28E04S-100+T
厂商: Maxim Integrated Products
文件页数: 31/37页
文件大小: 0K
描述: IC EEPROM 4KBIT 16SOIC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
格式 - 存储器: EEPROMs - 串行
存储器类型: EEPROM
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: 16-SOIC(0.154",3.90mm 宽)
供应商设备封装: 16-SOIC
包装: 带卷 (TR)
DS28E04-100: 4096-Bit 1-Wire Addressable EEPROM with PIO
Figure 18. CRC-16 Hardware Description and Polynomial
Polynomial = X
+X
+X +1
16
15
2
1
2
3
4
5
6
7
8
X
X
X
X
X
X
X
X
0
st
STAGE
nd
STAGE
1
rd
STAGE
2
th
STAGE
3
th
STAGE
4
th
STAGE
5
th
STAGE
6
th
STAGE
7
9
10
11
12
13
14
15
16
th
STAGE
th
STAGE
th
STAGE
th
STAGE
th
STAGE
th
STAGE
th
STAGE
th
STAGE
X
X
X
X
X
X
X
X
X
8
9
10
11
12
13
14
15
INPUT DATA
16
CRC
OUTPUT
COMMAND-SPECIFIC 1-Wire COMMUNICATION PROTOCOL—LEGEND
SYMBOL
RST
PD
Select
WS
RS
CPS
RM
WREG
PIOR
PIOW
PIOP
RAL
TA
TA-E/S
<32 – T4:T0 bytes>
<data to EOM>
<register data>
CRC16
FF loop
AA loop
Programming
DESCRIPTION
1-Wire Reset Pulse generated by master.
1-Wire Presence Pulse generated by slave.
Command and data to satisfy the ROM function protocol.
Command "Write Scratchpad".
Command "Read Scratchpad".
Command "Copy Scratchpad".
Command "Read Memory".
Command "Write Register".
Command "PIO Access Read".
Command "PIO Access Write".
Command "PIO Access Pulse".
Command "Reset Activity Latches".
Target address TA1, TA2.
Target address TA1, TA2 with E/S byte.
Transfer of as many bytes as needed to reach the end of the scratchpad for a given
target address.
Transfer of as many data bytes as are needed to reach the end of the memory.
Data for registers at addresses 223h to 225h, 1 to 3 bytes, depending on start address.
Transfer of an inverted CRC16.
Indefinite loop where the master reads FF bytes.
Indefinite loop where the master reads AA bytes.
Data transfer to EEPROM; no activity on the 1-Wire bus permitted during this time.
31 of 37
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