SAM7SE256 Atmel Corporation, SAM7SE256 Datasheet - Page 162

• 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

22.3
Table 22-1.
22.4
Table 22-2.
162
Name
NCS[7:0]
NRD
NWR0/NWE
NWR1/NUB
A0/NLB
A[22:1]
D[15:0]
NWAIT
A0
NWR0
NWR1
Multiplexed Signals
I/O Lines Description
Multiplexed Signals
SAM7SE512/256/32
I/O Lines Description
Static Memory Controller Multiplexed Signals
NLB
NWE
NUB
Description
Static Memory Controller Chip Select Lines
Read Signal
Write 0/Write Enable Signal
Write 1/Upper Byte Select Signal
Address Bit 0/Lower Byte Select Signal
Address Bus
Data Bus
External Wait Signal
Related Function
8-bit or 16-bit data bus, see
Byte-write or byte-select access, see
Byte-write or byte-select access, see
22.6.1.3 “Data Bus Width” on page
22.6.2.1 “Write Access Type” on page
22.6.2.1 “Write Access Type” on page
164.
Output
Output
Output
Output
Output
Output
Type
Input
I/O
165.
165.
6222F–ATARM–14-Jan-11
Active Level
Low
Low
Low
Low
Low
Low