ATXMEGA32A4-CUR Atmel, ATXMEGA32A4-CUR Datasheet - Page 274
ATXMEGA32A4-CUR
Manufacturer Part Number
ATXMEGA32A4-CUR
Description
MCU AVR 32+4 FLASH 49VFBGA
Manufacturer
Atmel
Series
AVR® XMEGAr
Specifications of ATXMEGA32A4-CUR
Core Processor
AVR
Core Size
8/16-Bit
Speed
32MHz
Connectivity
I²C, IrDA, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, DMA, POR, PWM, WDT
Number Of I /o
34
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
1.6 V ~ 3.6 V
Data Converters
A/D 12x12b, D/A 2x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
49-VFBGA
For Use With
ATAVRONEKIT - KIT AVR/AVR32 DEBUGGER/PROGRMMRATSTK600 - DEV KIT FOR AVR/AVR32770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPI
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Manufacturer
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24.8.1
24.8.2
24.8.3
8077H–AVR–12/09
Supported Commands
3-Port EBI Configuration
4-Port EBI Configuration
The SDRAM commands that are supported by the EBI is listed in
Table 24-3.
When 3 EBI ports are available, SDRAM can be connected with 3-Port EBI configuration. When
this is done only 4-bit data bus is available, and any chip select must be controlled from software
using a general purpose I/O pin (Pxn).
Figure 24-8. 3-Port SDRAM configuration
When 4 EBI ports are available, SDRAM can be connected with 3-Port or 4-Port EBI configura-
tion. When 4-Port configuration is used, 8-bit data bus is available and all four chip selects will
be available.
Command
NOP
ACTIVE
READ
WRITE
PRECHARGE
AUTO REFRESH
LOAD MODE
SELF REFRESH
Supported SDRAM commands
EBI
Description
No Operation
Activate the selected bank and select the row.
Input the starting column address and begin the burst read operation.
Input the starting column address and begin the burst write operation.
Deactivate the open row of selected bank or all banks
Refresh one row of each bank
Activate self refresh mode
CAS/RE
BA[1:0]
A[11:8]
A[7:0]]
D[3:0]
DQM
CKE
RAS
CLK
Pxn
WE
CLK
CKE
BA[1:0]
DQM
WE
RAS
CAS
D[3:0]
A[7:0]
A[11:8]
CS
Table 24-3 on page
SDRAM
XMEGA A
274.
274
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