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MCP2221 датащи(PDF) 38 Page - Microchip Technology

номер детали MCP2221
подробное описание детали  USB 2.0 to I2C??UART Protocol Converter with GPIO
PDF  80 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP2221 датащи(HTML) 38 Page - Microchip Technology

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MCP2221
DS20005292B-page 38
 2015 Microchip Technology Inc.
3.1.4
SEND FLASH ACCESS PASSWORD
This command is used to send a user-supplied
password that will be compared to the one stored in the
device’s Flash when Flash updates (Chip/GP
configuration, USB strings) are required and the Flash
data is password-protected.
In the case where no protection mechanism is in place
or the Flash data has been permanently locked, this
command has no meaning.
3.1.4.1
Responses
TABLE 3-18:
COMMAND STRUCTURE
Byte
Index
Value
Effect
0
0xB2
Send Flash Access Password – command code
1Don’t
care
2
Password byte 1
3
Password byte 2
4
Password byte 3
5
Password byte 4
6
Password byte 5
7
Password byte 6
8
Password byte 7
9
Password byte 8
10-63
Don’t care
TABLE 3-19:
RESPONSE 1 STRUCTURE
Byte
Index
Value
Effect
0
0xB2
Send Flash Access Password – command code echo
1
0x00
Command completed successfully
0x03
Command not allowed (when the number of failed Flash updates has been reached, no password
will be accepted)
2-63
Don’t
care



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