SAM7SE256 Atmel Corporation, SAM7SE256 Datasheet - Page 144

• Manufacturer Part Number: SAM7SE256
• Manufacturer: Atmel Corporation

Specifications of SAM7SE256

• Flash (kbytes): 256 Kbytes
• Pin Count: 144
• Max. Operating Frequency: 48 MHz
• Cpu: ARM7TDMI
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 88
• Ext Interrupts: 88
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 1
• Twi (i2c): 1
• Uart: 3
• Ssc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 384
• 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): 3.0 to 3.6
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 3
• Output Compare Channels: 3
• Input Capture Channels: 3
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

Table 21-5.
21.6.5.4
Table 21-6.
144
Attribute Memory
Common Memory
I/O Mode
True IDE Mode
Pins
NCS4/CFCS0
NCS2/CFCS1
Mode Base Address
SAM7SE512/256/32
Multiplexing of CompactFlash Signals on EBI Pins
CompactFlash Mode Selection
Dedicated CompactFlash Interface Multiplexing
CS4A = 1
CFCS0
Figure 21-4. CompactFlash Read/Write Control Signals
Table 21-6
nals with other EBI signals on the EBI pins. The EBI pins in
the CompactFlash interface as soon as the CS4A and/or CS2A field of the Chip Select Assign-
ment Register is set
must not be used to drive any other memory devices.
The EBI pins in
CompactFlash interface is enabled (CS4A = 1 and/or CS2A = 1).
CFOE
NRD
CompactFlash Signals
1
0
and
External Bus Interface
Table 21-7 on page 145
Table 21-7
SMC
NWR0_NWE
CS2A = 1
CFCS1
(See “EBI Chip Select Assignment Register” on page
NRD
A22
A21
remain shared between all memory areas when the corresponding
NWR0_NWE
CFWE
1
1
describe the multiplexing of the CompactFlash logic sig-
CS4A = 0
NCS4
1
1
0
1
0
1
CompactFlash Logic
CFIOR
NRD
NRD
1
1
1
Table 21-6
EBI Signals
0
1
0
1
CS2A = 0
NCS2
are strictly dedicated to
6222F–ATARM–14-Jan-11
CFOE
CFWE
CFIOR
CFIOW
158.). These pins
NWR0_NWE
NWR0_NWE
CFIOW
1