ATXMEGA256A3B-MH Atmel, ATXMEGA256A3B-MH Datasheet - Page 278

• Manufacturer Part Number: ATXMEGA256A3B-MH
• Description: MCU AVR 256KB FLASH A3B 64-QFN
• Manufacturer: Atmel
• Series: AVR® XMEGAr

Specifications of ATXMEGA256A3B-MH

• Core Processor: AVR
• Core Size: 8/16-Bit
• Speed: 32MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 49
• Program Memory Size: 256KB (128K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.6 V ~ 3.6 V
• Data Converters: A/D 16x12b; D/A 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-MLF®, 64-QFN
• Processor Series: ATXMEGA256x
• Core: AVR8
• Data Bus Width: 8 bit, 16 bit
• Data Ram Size: 16 KB
• Interface Type: I2C, SPI, USART
• Maximum Clock Frequency: 32 MHz
• Number Of Programmable I/os: 49
• Number Of Timers: 7
• Operating Supply Voltage: 1.6 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12 bit, 8 Channel
• On-chip Dac: 12 bit, 2 Channel
• 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
• Other names: ATXMEGA256A3B-MU; ATXMEGA256A3B-MU

24.10.2
Table 24-5.
Note:
8077H–AVR–12/09
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
CLKPER2
AH
AS
CH
CL
CKH
CKS
CMH
CMS
DRH
DRS
DWH
DWS
1. For characterization of Clk
SDRAM
Parameter
Clock period
Address Hold time
Address Setup time
Clock High-level witdh
Clock low-level witdh
CKE Hold time
CKE Setup time
CS, RAS, CAS, WE, DQM hold time
CS, RAS, CAS, WE, DQM setup time
Data in Hold
Data in Setup
Data out Hold
Data out Setup
EBI SDRAM Characteristics
SYS
and t
(1)
DRS
refer to device data sheet
Min
2 x Clk
TBD
SYS
0.5 x
0.5 x
0.5 x
0.5 x
0.5 x
0.5 x
0.5 x
0.5 x
0.5 x
0
0.5 x
0.5 x
t
t
t
t
t
t
t
t
t
t
t
CLKPER2
CLKPER2
CLKPER2
CLKPER2
CLKPER2
CLKPER2
CLKPER2
CLKPER2
CLKPER2
CLKPER2
CLKPER2
Typical
Max
XMEGA A
Uni
t
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
278