Datasheet

SAM9G20
DS60001516A-page 792  2017 Microchip Technology Inc.
Doc. Rev
6384D Comments
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Section 41.6 “ADC”, former Channel Conversion TIme and ADC Clock table and former Transfer
Characteritics table replaced by Table 41-18, “ADC Characteristics 9-bit Mode” and Table 41-19, “ADC
Characteristics 10-bit Mode”.
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Section 44.2 “AT91SAM9G20 Errata - Revision “A” Parts”, added Section 44.2.2.1 “Boot ROM: ROM Code,
Internal RC Usage with SAM-BA Boot through USB”.
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6384B Comments
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Overview
“Features” on page 1, Debug Unit (DBGU) updated.
Section 10.4.3 “USART”, “Optional Manchester Encoding” added to list of USART features.
Section 8.1.1.1 “BMS = 1, Boot on Embedded ROM”,
– SDCard,
(boot ROM does not support high capacity SDCards) clarification added.
Signal Description, Table 3-1, added GNDPLL to table.
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Section 6.6 “Shutdown Logic Pins”, updated with external pull-up requirement. rfo
(1)
AT91SAM9G20 Boot Program
Section 13.3 “Device Initialization”, updated
“Enable the user reset” removed from initialization steps.
Section 13.8 “SDCard Boot” added (high capactiy SDCards not support by boot ROM)
Section 13.11 “Hardware and Software Constraints” added footnote
(1)
“Boot ROM does not support high
capacity SDCards.”
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DBGU
Section 28.1 “Overview”, added text: “The Debug Unit two-pin UART can be used stand-alone for general
purpose serial communication.”
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PMC
Section 26.9.11 “PMC Master Clock Register”: bitfiedld description for “PDIV: Processor Clock Division” ,
Processor Clock replaced Master Clock in description.
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Electrical Characteristics:
Section 41.8 “Core Power Supply POR Characteristics”, updated with caution on power-up, Figure 41-2.
“VDDCORE and VDDIO Constraints at Startup” updated, and Board Schematics added to section.
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