SAM7SE256 Atmel Corporation, SAM7SE256 Datasheet - Page 139

• 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 21-3.
Notes:
6222F–ATARM–14-Jan-11
Pin
Controller
A18 - A20
A21/NANDALE
A22/REG/NANDCLE
NCS0
NCS1/SDCS
NCS2/CFCS1
NCS3/NANDCS
NCS4/CFCS0
NCS5/CFCE1
NCS6/CFCE2
NCS7
NANDOE
NANDWE
NRD/CFOE
NWR0/NWE/CFWE
NWR1/NBS1/CFIOR
NBS3/CFIOW
SDCK
SDCKE
RAS
CAS
SDWE
NWAIT
Pxx
Pxx
Pxx
(6)
(6)
(6)
1. For SDRAM connection examples, refer to
2. For NAND Flash connection examples, refer to “NAND Flash Support on AT91SAM7SE Microcontrollers”, application note.
3. I/O8 - I/O15 bits used only for 16-bit NAND Flash.
4. Not directly connected to the CompactFlash slot. Permits the control of the bidirectional buffer between the EBI data bus and
5. NWR1 enables upper byte writes. NWR0 enables lower byte writes.
6. Any free PIO line.
7. CE connection depends on the Nand Flash.
the CompactFlash slot.
For standard Nand Flash devices, it must be connected to any free PIO line.
For “CE don’t care” 8-bit Nand Flash devices, it can be either connected to NCS3/NANDCS or to any free PIO line.
For “CE don’t care” 16-bit Nand Flash devices, it must be connected to any free PIO line.
EBI Pins and External Static Device Connections (Continued)
8-bit Static
A18 - A20
Device
A21
A22
WE
WE
OE
CS
CS
CS
CS
CS
CS
CS
CS
–
–
–
–
–
–
–
–
–
–
–
–
A17 - A19
2 x 8-bit
Devices
Static
SMC
WE
WE
A20
A21
CS
CS
CS
CS
CS
CS
CS
CS
OE
–
–
–
–
–
–
–
–
–
–
–
–
(5)
(5)
“Using SDRAM on AT91SAM7SE Microcontrollers”,
A17 - A19
Device
16-bit
Static
NUB
A20
A21
WE
OE
CS
CS
CS
CS
CS
CS
CS
CS
–
–
–
–
–
–
–
–
–
–
–
–
Pins of the Interfaced Device
SDRAM
SDRAMC
DQM1
DQM3
CKE
RAS
CAS
CLK
WE
CS
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
(1)
CompactFlash
CD1 or CD2
CFRNW
CFCS1
CFCS0
WAIT
REG
IOW
CE1
CE2
IOR
WE
OE
–
–
–
–
–
–
–
–
–
–
–
–
–
–
(4)
(4)
(4)
SAM7SE512/256/32
True IDE Mode
CompactFlash
CD1 or CD2
CFRNW
CFCS1
CFCS0
SMC
WAIT
CS0
CS1
IOW
application note.
IOR
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
(4)
(4)
(4)
Flash
NAND
CE
CE
RDY
ALE
CLE
WE
RE
(8)
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
(7)
(7)
(2)
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