SAM7SE256 Atmel Corporation, SAM7SE256 Datasheet - Page 136

• 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

21.2
Figure 21-1. Organization of the External Bus Interface
136
Block Diagram
SAM7SE512/256/32
Controller
Memory
Address Decoder
ASB
Chip Select
Assignor
APB
Controller
Controller
Memory
SDRAM
Static
External Bus Interface
User Interface
CompactFlash
NAND Flash
Controller
Logic
Logic
ECC
Logic
MUX
PIO
SDA10
SDCK
D[31:0]
A0/NBS0
A1/NBS2
A[15:2], A[20:18]
A16/BA0
A17/BA1
NCS0/CFRNW
NCS1/SDCS
NCS2/CFCS1
NCS3/NANDCS
NRD/CFOE
NWR0/NWE/CFWE
NWR1/NBS1/CFIOR
NBS3/CFIOW
SDCKE
RAS
CAS
SDWE
A22/REG/NANDCLE
A21/NANDALE
NCS4/CFCS0
NCS5/CFCE1
NCS6/CFCE2
NCS7
NANDOE
NANDWE
NWAIT
6222F–ATARM–14-Jan-11