MCP2221 datasheet(6/80 Pages) MICROCHIP

6 / 80 page

MCP2221

DS20005292B-page 6

 2015 Microchip Technology Inc.

1.4.2

CHIP SETTINGS MAP

The Chip Settings area resides in Flash memory and is

copied into SRAM at run time. Not all of the device’s

settings can be altered at run time. All the fields in the

Flash settings can be altered by the user.

TABLE 1-3:

CHIP SETTINGS MAP

Byte

Index

Comments

CHIPSETTING0

Controls the USB CDC serial number enumeration, default state for the GP LED

designation, default state for GP dedicated-function pins and chip settings

protection level

CHIPSETTING1

Default clock output divider and duty cycle

CHIPSETTING2

DAC reference options and default DAC value

CHIPSETTING3

ADC reference and interrupt detection settings

USBVIDL

USB VID lower byte

USBVIDH

USB VID higher byte

USBPIDL

USB PID lower value

USBPIDH

USB PID higher byte

USBPWRATTR

USB power attributes

USBREQCRT

USB required current

PASS0

Password byte 0

PASS1

Password byte 1

PASS2

Password byte 2

PASS3

Password byte 3

PASS4

Password byte 4

PASS5

Password byte 5

PASS6

Password byte 6

PASS7

Password byte 7

MCP2221 数据表(PDF) 6 Page - Microchip Technology

MCP2221 数据表(HTML) 6 Page - Microchip Technology

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