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SAMV71Q21 データシート(PDF) 32 Page - Microchip Technology

部品番号 SAMV71Q21
部品情報  SAM E70/S70/V70/V71 Family Silicon Errata and Data Sheet Clarification
PDF  41 Pages
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メーカー  MICROCHIP [Microchip Technology]
ホームページ  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

SAMV71Q21 データシート(HTML) 32 Page - Microchip Technology

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19.
TWI High-Speed (TWIHS)
19.1
I2C Hold Timing Incompatibility
The TWIHS module is not compatible with I2C hold timing. The divider to program the hold time is too
short to achieve the expected hold time at high frequency. The achieved time is 227 ns maximum at 150
MHz, instead of the required 300 ns.
Workaround
None.
Affected Silicon Revisions
A
B
X
X
19.2
Clear Command
A bus reset using the CLEAR bit of the TWIHS Control register does not work correctly during a bus busy
state.
Workaround
Reconfigure the TWCK line in GPIO output and generate nine clock pulses through software to unlock
the I2C device.
Once this is done, the TWCK line can be reconfigured as a peripheral line.
Affected Silicon Revisions
A
B
X
X
SAM E70/S70/V70/V71 Family
TWI High-Speed (TWIHS)
© 2018 Microchip Technology Inc.
Datasheet Errata
DS80000767C-page 32



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