MCP4531 datasheet(40/102 Pages) MICROCHIP

tên linh kiện	MCP4531

Giải thích chi tiết về linh kiện	7/8-Bit Single/Dual I2C Digital POT with Nonvolatile Memory

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MCP454X/456X/464X/466X

DS22107B-page 40

 2008-2013 Microchip Technology Inc.

bit 0

WP: EEPROM Write Protect Status bit (Refer to the section EEPROM Write Protect for further

information)

This bit indicates the status of the write protection on the EEPROM memory. When Write Protect is

enabled, writes to all nonvolatile memory are prevented. This includes the General Purpose EEPROM

memory, and the nonvolatile Wiper registers. Write Protect does not block modification of the volatile

wiper register values or the volatile TCON register value (via Increment, Decrement, or Write

commands).

This status bit is an OR of the devices Write Protect pin (WP) and the internal nonvolatile WP bit. High

Voltage commands are required to enable and disable the internal WP EEPROM bit.

EEPROM memory is Write Protected

EEPROM memory can be written

STATUS REGISTER (ADDRESS = 0x05) (CONTINUED)

Note 1:

Requires a High Voltage command to modify the state of this bit (for nonvolatile devices only). This bit is

not directly written, but reflects the system state (for this feature).

MCP4531 bảng dữ liệu(PDF) 40 Page - Microchip Technology