SAM7SE512 Atmel Corporation, SAM7SE512 Datasheet - Page 135
SAM7SE512
Manufacturer Part Number
SAM7SE512
Description
Manufacturer
Atmel Corporation
Specifications of SAM7SE512
Flash (kbytes)
512 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
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21. External Bus Interface (EBI)
21.1
6222F–ATARM–14-Jan-11
Overview
The External Bus Interface (EBI) is designed to ensure the successful data transfer between
several external devices and the embedded Memory Controller of an ARM-based device. The
Static Memory, SDRAM and ECC Controllers are all featured external Memory Controllers on
the EBI. These external Memory Controllers are capable of handling several types of external
memory and peripheral devices, such as SRAM, PROM, EPROM, EEPROM, Flash, and
SDRAM.
The EBI also supports the CompactFlash
that greatly reduces the requirements for external components. Furthermore, the EBI handles
data transfers with up to eight external devices, each assigned to eight address spaces defined
by the embedded Memory Controller. Data transfers are performed through a 16-bit or 32-bit
data bus, an address bus of up to 23 bits, up to eight chip select lines (NCS[7:0]) and several
control pins that are generally multiplexed between the different external Memory Controllers.
®
and the NAND Flash protocols via integrated circuitry
SAM7SE512/256/32
135
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