AT32UC3A0512-ALTTA Atmel, AT32UC3A0512-ALTTA Datasheet - Page 234
AT32UC3A0512-ALTTA
Manufacturer Part Number
AT32UC3A0512-ALTTA
Description
IC MCU AVR32 512K FLASH 144LQFP
Manufacturer
Atmel
Series
AVR®32 UC3r
Datasheet
1.ATEVK1104.pdf
(826 pages)
Specifications of AT32UC3A0512-ALTTA
Core Processor
AVR
Core Size
32-Bit
Speed
66MHz
Connectivity
EBI/EMI, Ethernet, I²C, SPI, SSC, UART/USART, USB OTG
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
109
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
64K x 8
Voltage - Supply (vcc/vdd)
1.65 V ~ 1.95 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
144-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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32058J-AVR32-04/11
Figure 24-18. TWI Read Operation with Multiple Data Bytes with or without Internal Address
No
Read Receive Holding register (TWI_RHR)
Read Receive Holding register (TWI_RHR)
(CLDIV, CHDIV, CKDIV) in TWI_CWGR
- Internal address size (if IADR used)
Set the Master Mode register:
TWI_CR = MSEN + SVDIS
Read ==> bit MREAD = 1
Internal address size = 0?
Set the Control register:
- Device slave address
- Transfer direction bit
Read Status register
Read Status register
Read status register
(Needed only once)
TWI_CR = START
TWI_CR = STOP
Yes
Start the transfer
Last data to read
Stop the transfer
- Master enable
TXCOMP = 1?
Set TWI clock
RXRDY = 1?
Yes
Yes
Yes
RXRDY = 1?
Yes
but one?
BEGIN
END
No
No
No
Set the internal address
TWI_IADR = address
AT32UC3A
234
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