at91sam9263 ATMEL Corporation, at91sam9263 Datasheet - Page 1036
at91sam9263
Manufacturer Part Number
at91sam9263
Description
At91 Arm Thumb Microcontrollers
Manufacturer
ATMEL Corporation
Datasheet
1.AT91SAM9263.pdf
(1065 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
at91sam9263-CJ
Manufacturer:
ATMEL
Quantity:
181
Company:
Part Number:
at91sam9263-EK
Manufacturer:
Atmel
Quantity:
135
Company:
Part Number:
at91sam9263B-CU
Manufacturer:
IDT
Quantity:
1 043
Part Number:
at91sam9263B-CU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
at91sam9263B-CU-100
Manufacturer:
ATMEL
Quantity:
1 000
- Current page: 1036 of 1065
- Download datasheet (16Mb)
49.2.16
49.2.16.1
49.2.16.2
49.2.16.3
49.2.16.4
49.2.17
49.2.17.1
1036
AT91SAM9263 Preliminary
Two-wire Interface (TWI)
UDP
Clock Divider
Disabling Does not Operate Correctly
Software Reset
STOP not Generated
Bad Data in the First IN Data Stage
The value of CLDIV x 2
must be less than or equal to 8191·
Problem Fix/Workaround
None.
Any transfer in progress is immediately frozen if the Control Register (TWI_CR) is written with
the bit MSDIS at 1. Furthermore, the status bits TXCOMP and TXRDY in the Status Register
(TWI_SR) are not reset.
Problem Fix/Workaround
The user must wait for the end of transfer before disabling the TWI. In addition, the interrupts
must be disabled before disabling the TWI.
When a software reset is performed during a frame and when TWCK is low, it is impossible to
initiate a new transfer in READ or WRITE mode.
Problem Fix/Workaround
None.
If the sequence described as follows occurs:
The STOP is not generated.
The line shows: DADR BYTE 1, ..., BYTE n, NO STOP generated, BYTE 1, ..., BYTE n.
Problem Fix/Workaround
Insert a delay of one TWI clock period before step 4.
All or part of the data of the first IN data Stage are not transmitted. It may then be a Zero Length
Packet. The CRC is correct. Thus the HOST may only see that the size of the received data
does not match the requested length. But even if performed again, the control transfer probably
fails.
Problem Fix/Workaround
Control transfers are mainly used at device configuration. After clearing RXSETUP, the software
needs to compute the setup transaction request before writing data into the FIFO if needed. This
1. WRITE 1 or more bytes at a given address.
2. Send a STOP.
3. Wait for TXCOMP flag.
4. READ (or WRITE) 1 or more bytes at the same address.
CKDIV
must be less than or equal to 8191, the value of CHDIV x 2
6249D–ATARM–20-Dec-07
CKDIV
Related parts for at91sam9263
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
AT91SAM ARM-based Flash MCU
Manufacturer:
ATMEL [ATMEL Corporation]
Datasheet:
Part Number:
Description:
At91sam Arm-based Flash Mcu
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
At91sam Arm-based Flash Mcu
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
At91sam Arm-based Embedded Mpu
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
At91sam Arm-based Embedded Mpu
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
At91sam Arm-based Embedded Mpu
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
At91sam Arm-based Embedded Mpu
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
At91sam Arm-based Embedded Mpu
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
AT91 ARM Thumb-based Microcontrollers
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
AT91 ARM THUMB-BASED MICROCONTROLLERS
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
AT91 ARM Thumb-based Microcontrollers
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
AT91 MEMORY EXTENSION CARD
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
AT91 ARM X40 SERIES EVAL KIT
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
AT91 ARM Cortex M3-based Processor
Manufacturer:
ATMEL [ATMEL Corporation]
Datasheet:
Part Number:
Description:
AT91 ARM Thumb-based Microcontrollers
Manufacturer:
ATMEL [ATMEL Corporation]
Datasheet: