SAM7X512 Atmel Corporation, SAM7X512 Datasheet - Page 181
SAM7X512
Manufacturer Part Number
SAM7X512
Description
Manufacturer
Atmel Corporation
Specifications of SAM7X512
Flash (kbytes)
512 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)
128
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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7.6
ARM DDI 0029G
Data bus control
Figure 7-5 shows the ARM7TDMI data bus control timing. The timing parameters used
in Figure 7-5 are listed in Table 7-5.
The cycle shown in Figure 7-5 is a data write cycle because nENOUT was driven LOW
during phase one. Here, DBE has first been used to modify the behavior of the data bus,
and then nENIN.
nENOUT
D[31:0]
nENIN
MCLK
DBE
Note
Copyright © 1994-2001. All rights reserved.
Symbol
T
T
T
T
T
T
dbe
dbnen
dbz
doh
dout
dout
T
T
dbnen
dbz
Parameter
Data bus enable time from DBEr
DBE to nENOUT valid
Data bus disable time from DBEf
DOUT[31:0] hold from MCLKf
MCLKf to D[31:0] valid
T
dbe
Table 7-5 Data bus control timing parameters
T
dbz
Figure 7-5 Data bus control timing
T
dbnen
T
dbe
AC and DC Parameters
Parameter type
Maximum
Maximum
Minimum
Maximum
Maximum
T
doh
7-9
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