SAM9XE512 Atmel Corporation, SAM9XE512 Datasheet - Page 457

• Manufacturer Part Number: SAM9XE512
• Manufacturer: Atmel Corporation

Specifications of SAM9XE512

• Flash (kbytes): 512 Kbytes
• Pin Count: 217
• Max. Operating Frequency: 180 MHz
• Cpu: ARM926
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 96
• Ext Interrupts: 96
• Usb Transceiver: 3
• Usb Speed: Full Speed
• Usb Interface: Host, Device
• Spi: 2
• Twi (i2c): 2
• Uart: 6
• Ssc: 1
• Ethernet: 1
• Sd / Emmc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: Yes
• Adc Channels: 4
• Adc Resolution (bits): 10
• Adc Speed (ksps): 312
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 32
• Self Program Memory: NO
• External Bus Interface: 1
• Dram Memory: sdram
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 1.65 to 1.95
• Fpu: No
• Mpu / Mmu: No / Yes
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

Figure 33-11. Master Write with One, Two or Three Bytes Internal Address and One Data Byte
Figure 33-12. Master Read with One, Two or Three Bytes Internal Address and One Data Byte
33.7.6.2
457
TWD
TWD
TWD
TWD
TWD
TWD
Three bytes internal address
Two bytes internal address
One byte internal address
Three bytes internal address
Two bytes internal address
One byte internal address
S
S
S
AT91SAM9XE128/256/512 Preliminary
S
S
S
10-bit Slave Addressing
DADR
DADR
DADR
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 (TWI_IADR). The two remaining
Internal 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)
Figure 33-13
the use of internal addresses to access the device.
Figure 33-13. Internal Address Usage
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 TWI_IADR with b3 b4 b5 b6 b7 b8 b9 b10 (b10 is the LSB of the 10-bit
W
W
W
A
A
A
address)
IADR(23:16)
A
A
A
IADR(15:8)
IADR(7:0)
below shows a byte write to an Atmel AT24LC512 EEPROM. This demonstrates
IADR(23:16)
IADR(15:8)
IADR(7:0)
R
S
T
A
T
M
S
B
Address
Device
A
A
A
0
IADR(15:8)
Sr
IADR(7:0)
A
A
A
S
B
L
W
W
R
T
E
R
I
/
DADR
C
A
K
WORD ADDRESS
IADR(15:8)
IADR(7:0)
M
S
B
DATA
FIRST
R
A
A
Sr
IADR(7:0)
A
A
A
A
A
C
K
WORD ADDRESS
DADR
SECOND
IADR(7:0)
P
DATA
DATA
A
L
S
B
Sr
R
C
A
K
A
A
N
A
DADR
DATA
DATA
P
P
DATA
DATA
A
C
K
6254C–ATARM–22-Jan-10
R
N
O
S
T
P
P
A
N
A
P
P