参数资料
型号: DS28DG02G-3C+T
厂商: Maxim Integrated
文件页数: 31/34页
文件大小: 0K
描述: IC EEPROM 2KBIT 2MHZ 36TQFN
标准包装: 2,500
格式 - 存储器: EEPROMs - 串行
存储器类型: EEPROM
存储容量: 2K (256 x 8)
速度: 2MHz
接口: SPI 3 线串行
电源电压: 2.2 V ~ 5.25 V
工作温度: -40°C ~ 85°C
封装/外壳: 36-WFQFN 裸露焊盘
供应商设备封装: 36-TQFN 裸露焊盘(6x6)
包装: 带卷 (TR)
DS28DG02: 2Kb SPI EEPROM with PIO, RTC, Reset, Battery Monitor, and Watchdog
Command-Specific Communication—Color Codes
Master-to-Slave
Slave-to-Master
Programming
Communication Examples
Set the WEN Bit in the SPI Status Register (Write Enable)
SEL
WREN DSEL
Clear the WEN Bit in the SPI Status Register (Write Disable)
SEL
WRDI
DSEL
Write to the SPI Status Register Sequence
SEL
WREN DSEL
SEL
WRSR <byte> DSEL
Programming
Note : It is advisable to execute a WRDI command right after the WRSR sequence is completed to ensure read
access to the user memory.
Read Status Register (e.g., to Detect the End of a Write Cycle)
SEL
RDSR <byte> <byte> <byte> DSEL
Continue reading until RDYZ bit is is 0
Refresh PIOs with Power-On Defaults
SEL
RFSH
DSEL
Write 3 Bytes to User Memory Sequence, Starting Address = 067h
SEL
WREN DSEL
SEL
WRITEL <67h> <byte> <byte> <byte> DSEL
Programming
See Read Status register example to test for the end of the write cycle.
Set RTC and Calendar, Starting Address = 129h
SEL
WREN DSEL
SEL
WRITEH <29h>
<7 bytes RTC data>
DSEL
SRAM, no programming time.
Read User Memory Block 1, Starting Address = 040h, 64 Bytes
SEL
READL <40h> <64 bytes memory data> DSEL
Read all PIOs 3 Times, Starting Address = 126, 6 Bytes
SEL
READH <26h>
<6 bytes PIO data>
DSEL
31 of 34
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