AT32UC3B1128-AUR Atmel, AT32UC3B1128-AUR Datasheet - Page 228
![MCU AVR32 128K FLASH 48-TQFP](/photos/6/82/68248/313-48-vqfp_sml.jpg)
AT32UC3B1128-AUR
Manufacturer Part Number
AT32UC3B1128-AUR
Description
MCU AVR32 128K FLASH 48-TQFP
Manufacturer
Atmel
Series
AVR®32 UC3r
Datasheet
1.AT32UC3B164-AUR.pdf
(680 pages)
Specifications of AT32UC3B1128-AUR
Package / Case
48-TQFP, 48-VQFP
Voltage - Supply (vcc/vdd)
1.65 V ~ 1.95 V
Operating Temperature
-40°C ~ 85°C
Speed
60MHz
Number Of I /o
28
Core Processor
AVR
Program Memory Type
FLASH
Ram Size
32K x 8
Program Memory Size
128KB (128K x 8)
Data Converters
A/D 6x10b
Oscillator Type
Internal
Peripherals
Brown-out Detect/Reset, DMA, POR, PWM, WDT
Connectivity
I²C, IrDA, SPI, SSC, UART/USART, USB
Core Size
32-Bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Figure 19-12. Master Read with One, Two or Three Bytes Internal Address and One Data Byte
19.10.7.2
Figure 19-13. Internal Address Usage
32059J–12/2010
TWD
TWD
TWD
Three bytes internal address
Two bytes internal address
One byte internal address
S
S
S
10-bit Slave Addressing
DADR
DADR
DADR
W
W
W
For a slave address higher than 7 bits, the user must configure the address size (IADRSZ) and
set the other slave address bits in the internal address register (IADR). The two remaining Inter-
nal address bytes, IADR[15:8] and IADR[23:16] can be used the same as in 7-bit Slave
Addressing.
Example: Address a 10-bit device:
(10-bit device address is b1 b2 b3 b4 b5 b6 b7 b8 b9 b10)
1. Program IADRSZ = 1,
2. Program DADR with 1 1 1 1 0 b1 b2 (b1 is the MSB of the 10-bit address, b2, etc.)
3. Program IADR with b3 b4 b5 b6 b7 b8 b9 b10 (b10 is the LSB of the 10-bit address)
Figure 19-13
the use of internal addresses to access the device.
S
T
A
R
T
A
A
A
M
S
B
Address
Device
IADR(23:16)
IADR(15:8)
IADR(7:0)
0
below shows a byte write to an Atmel AT24LC512 EEPROM. This demonstrates
S
B
L
W
W
R
E
T
R
I
/
A
C
K
WORD ADDRESS
A
A
A
M
S
B
FIRST
IADR(15:8)
Sr
IADR(7:0)
DADR
A
C
K
WORD ADDRESS
SECOND
A
A
R
Sr
IADR(7:0)
A
L
S
B
A
C
K
DADR
DATA
DATA
A
Sr
R
A
C
K
S
O
P
T
N
A
DADR
DATA
P
DATA
AT32UC3B
R
N
P
N
A
P
228
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