SAM7SE256 Atmel Corporation, SAM7SE256 Datasheet - Page 640

• 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

Figure 40-10. SDRAMC Signals
640
D16 - D31
D16 - D31
A11 - A13
BA0/BA1
D0 - D15
D0 - D15
SAM7SE512/256/32
A0 - A9,
DQM0 -
DQM3
SDCKE
to Write
to Write
SDA10
SDWE
SDCK
SDCS
Read
Read
RAS
CAS
SDRAMC
1
SDRAMC
2
SDRAMC
3
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
4
11
13
5
7
9
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
10
12
14
6
8
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
15
11
13
17
5
9
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
16
10
12
14
18
6
19
21
SDRAMC
SDRAMC
20
22
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
15
23
11
13
17
25
27
5
9
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
16
24
10
12
14
18
26
28
6
6222F–ATARM–14-Jan-11