SAM9XE256 Atmel Corporation, SAM9XE256 Datasheet - Page 815

• Manufacturer Part Number: SAM9XE256
• Manufacturer: Atmel Corporation

Specifications of SAM9XE256

• Flash (kbytes): 256 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

Table 43-29. SMC Read Signals - NCS Controlled (READ_MODE= 0)
43.12.3
Table 43-30. SMC Write Signals - NWE Controlled (Write_Mode = 1)
6254C–ATARM–22-Jan-10
SMC
SMC
SMC
SMC
SMC
SMC
SMC
Symbol
SMC
SMC
SMC
SMC
8
9
10
11
12
13
14
15
16
17
18
Write Timings
Data Setup before NCS High
Data Hold after NCS High
Data Setup before NCS High
Data Hold after NCS High
A2 - A25 valid before NCS High
NRD low before NCS High
NCS Pulse Width
Parameter
Data Out Valid before NWE High
NWE Pulse Width
NBS0/A0 NBS1, NBS2/A1, NBS3,
A2 - A25 valid before NWE low
NCS low before NWE high
NBS0/A0, NBS1, NBS2/A1, NBS3,
HOLD or NO HOLD SETTINGS (ncs rd hold … 0, ncs rd hold = 0)
HOLD or NO HOLD SETTINGS (nwe hold … 0, nwe hold = 0)
HOLD SETTINGS (ncs rd hold … 0)
(ncs rd setup +
(ncs rd setup +
length * t
ncs rd pulse)*
ncs rd pulse -
ncs rd setup +
ncs rd pulse
AT91SAM9XE128/256/512 Preliminary
nrd setup)*
1.8V Supply
(nwe setup -
nwe pulse) *
t
t
nwe setup *
nwe pulse *
nwe pulse *
CPMCK
CPMCK
t
t
t
CPMCK
CPMCK
CPMCK
t
CPMCK
-7.7
6.6
8
0
0
-3.3
-0.9
CPMCK
-1.7
-2.8
-1.2
-1
Min
length * t
pulse)* t
+ ncs rd pulse
(ncs rd setup
(ncs rd setup
- nrd setup)*
ncs rd pulse
t
ncs rd setup +
CPMCK
3.3V Supply
(nwe setup -
nwe pulse) *
t
nwe setup *
+ ncs rd
nwe pulse *
nwe pulse *
CPMCK
t
t
t
CPMCK
CPMCK
CPMCK
-3.4
-7.7
7.8
6.4
0
0
CPMCK
CPMCK
-0.9
-0.99
-1.7
-2.7
-1.2
1.8V Supply
Max
3.3V Supply
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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