ATxmega256A3BU Atmel Corporation, ATxmega256A3BU Datasheet - Page 341

• Manufacturer Part Number: ATxmega256A3BU
• Manufacturer: Atmel Corporation

Specifications of ATxmega256A3BU

• Flash (kbytes): 256 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 32 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 47
• Ext Interrupts: 49
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 8
• Twi (i2c): 2
• Uart: 6
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 16
• Adc Resolution (bits): 12
• Adc Speed (ksps): 2000
• Analog Comparators: 4
• Resistive Touch Screen: No
• Dac Channels: 2
• Dac Resolution (bits): 12
• Temp. Sensor: Yes
• Crypto Engine: AES/DES
• Sram (kbytes): 16
• Eeprom (bytes): 4096
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.6 to 3.6
• Operating Voltage (vcc): 1.6 to 3.6
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 7
• Output Compare Channels: 22
• Input Capture Channels: 22
• Pwm Channels: 22
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

8331A–AVR–07/11
Table 27-5.
Note:
Table 27-6.
Note:
PORT3
PORT2
PORT1
PORT0
PORT0
A[23:0]
D[7:0]
AD[7:0]
PORT3
PORT2
PORT1
PORT0
PORT0
A[23:0]
D[7:0]
AD[7:0]
PORT
PORT
1. “/” denotes: Address or data output controlled by ALE1/2; and “()” denotes: optional feature
1. “/” denotes: Address or data output controlled by ALE1/2; and “()” denotes: optional feature
selected on configuration.
selected on configuration.
7:0
7:0
7:0
7:4
3
2
1
0
7:4
3:0
7:0
7:0
7:4
3
2
1
0
Pinout SRAM LPC
Pinout SRAM and SRAM LPC when combined with SDRAM (4PORT only)
PIN
PIN
(1)
(1)
D[7:0]/
A[7:0]
CS[3:0]
ALE1
RE
WE
CS[3:0]
(A[23:20])
A[15:8]
A[15:8]
D[7:0]/
A[7:0]
ALE1
RE
WE
(with SDRAM)
SRAM LPC
SRAM LPC
2PORT
ALE1
ALE1
–
–
–
–
–
A[15:8]
D[7:0]/
A[7:0]
CS[3:0]
(A[19:16])
ALE1
RE
WE
CS[3:0]
(A[23:20])
A[19:16]
D[7:0]/
A[7:0]/
A[15:8]
ALE2
ALE1
RE
WE
3PORT/4PORT
(with SDRAM)
SRAM LPC
SRAM LPC
ALE12
ALE1
–
–
–
–
Atmel AVR XMEGA AU
D[7:0]/
A[7:0]/
A[15:8]
CS[3:0]
(A[19:16])
ALE2
RE
WE
CS[3:0]
(A[23:20])
A[19:16]
A[7:0]/
A[15:8]
D[7:0]
ALE1
RE
WE
(with SDRAM)
2/3/4PORT
ALE12
SRAM
SRAM
ALE1
–
–
–
–
–
CS[3:0]
A[7:0]/
A[15:8]/
A[23:16]
D[7:0]
ALE2
ALE1
RE
WE
(with SDRAM)
ALE12
SRAM
–
–
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