参数资料
型号: DS28E04S-100+T
厂商: Maxim Integrated Products
文件页数: 35/37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
PIO ACCESS READ EXAMPLE
Read the state of the PIOs 32 times.
With only a single DS28E04-100 connected to the bus master, the communication looks like this:
MASTER MODE
TX
RX
TX
TX
RX
RX
TX
RX
DATA (LSB FIRST)
(Reset)
(Presence)
CCh
F5h
<32 data bytes>
<2 bytes CRC16\>
(Reset)
(Presence)
COMMENTS
Reset pulse
Presence pulse
Issue “Skip ROM” command
Issue “PIO Access Read” command
Read 32 PIO samples
Read CRC to check for data integrity
Reset pulse
Presence pulse
The inverted CRC16 is transmitted after 32 bytes of PIO data.
PIO ACCESS WRITE EXAMPLE
Set both PIOs to 0 and then to 1. Both PIOs are pulled high to V CC or V PUP by a resistor.
With only a single DS28E04-100 connected to the bus master, the communication looks like this:
MASTER MODE
TX
RX
TX
TX
TX
TX
RX
RX
TX
TX
RX
RX
TX
RX
DATA (LSB FIRST)
(Reset)
(Presence)
CCh
5Ah
FCh
03h
AAh
FCh
FFh
00h
AAh
FFh
(Reset)
(Presence)
35 of 37
COMMENTS
Reset pulse
Presence pulse
Issue “Skip ROM” command
Issue “PIO Access Write” command
Write new PIO output state
Write inverted new PIO output state
Read confirmation byte
Read new PIO pin status
Write new PIO output state
Write inverted new PIO output state
Read confirmation byte
Read new PIO pin status
Reset pulse
Presence pulse
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