SAM7S321 Atmel Corporation, SAM7S321 Datasheet - Page 197
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SAM7S321
Manufacturer Part Number
SAM7S321
Description
Manufacturer
Atmel Corporation
Specifications of SAM7S321
Flash (kbytes)
32 Kbytes
Pin Count
64
Max. Operating Frequency
55 MHz
Cpu
ARM7TDMI
Hardware Qtouch Acquisition
No
Max I/o Pins
32
Ext Interrupts
32
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)
8
Self Program Memory
NO
Dram Memory
No
Nand Interface
No
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
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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7.21
ARM DDI 0029G
Output enable and disable times
TCK
A[ ]
D[ ]
Figure 7-20 shows the output enable and disable times due to a HIGHZ TAP instruction.
Figure 7-21 shows the output enable and disable times due to data scanning.The timing
parameters used in Figure 7-20 and Figure 7-21 are listed in Table 7-20.
Figure 7-20 shows the T
when the HIGHZ TAP instruction is loaded into the instruction register.
Figure 7-21 shows the T
when data scanning, due to different logic levels being scanned through the scan cells
for ABE and DBE.
Figure 7-20 Output enable and disable times due to HIGHZ TAP instruction
Note
Note
Copyright © 1994-2001. All rights reserved.
Figure 7-21 Output enable and disable times due to data scanning
TCK
D[ ]
A[ ]
bse
bse
, output enable time, parameter and T
, output enable time, parameter and T
Table 7-20 Output enable and disable timing parameters
T
bsz
T
bsz
Symbol
T
T
bse
bsz
Parameter
Output enable time
Output disable time
bsz
bsz
AC and DC Parameters
, output disable time,
, output disable time
Parameter type
Maximum
Maximum
T
bse
T
bse
7-25
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