SAM7X256 Atmel Corporation, SAM7X256 Datasheet - Page 477
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SAM7X256
Manufacturer Part Number
SAM7X256
Description
Manufacturer
Atmel Corporation
Specifications of SAM7X256
Flash (kbytes)
256 Kbytes
Pin Count
100
Max. Operating Frequency
55 MHz
Cpu
ARM7TDMI
Hardware Qtouch Acquisition
No
Max I/o Pins
62
Ext Interrupts
62
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
2
Twi (i2c)
1
Uart
3
Can
1
Ssc
1
Ethernet
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)
64
Self Program Memory
NO
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
3.3
Operating Voltage (vcc)
3.0 to 3.6
Fpu
No
Mpu / Mmu
no / 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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34.6.9
Register Name:
Access Type:
• EP0: Reset Endpoint 0
• EP1: Reset Endpoint 1
• EP2: Reset Endpoint 2
• EP3: Reset Endpoint 3
• EP4: Reset Endpoint 4
• EP5: Reset Endpoint 5
This flag is used to reset the FIFO associated with the endpoint and the bit RXBYTECOUNT in the register UDP_CSRx.It
also resets the data toggle to DATA0. It is useful after removing a HALT condition on a BULK endpoint. Refer to Chapter
5.8.5 in the USB Serial Bus Specification, Rev.2.0.
Warning: This flag must be cleared at the end of the reset. It does not clear UDP_ CSRx flags.
0 = No reset.
1 = Forces the corresponding endpoint FIF0 pointers to 0, therefore RXBYTECNT field is read at 0 in UDP_ CSRx register.
Reseting the endpoint is a two-step operation:
6120I–ATARM–06-Apr-11
1. Set the corresponding EPx field.
2. Clear the corresponding EPx field.
31
23
15
–
–
–
7
UDP Reset Endpoint Register
30
22
14
UDP_ RST_EP
Read-write
–
–
–
6
EP5
29
21
13
–
–
–
5
EP4
28
20
12
–
–
–
4
EP3
27
19
11
–
–
–
3
EP2
26
18
10
–
–
–
2
SAM7X512/256/128
EP1
25
17
–
–
9
–
1
EP0
24
16
–
–
8
–
0
477
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