SAM7S256 Atmel Corporation, SAM7S256 Datasheet - Page 150
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SAM7S256
Manufacturer Part Number
SAM7S256
Description
Manufacturer
Atmel Corporation
Specifications of SAM7S256
Flash (kbytes)
256 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)
64
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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Instruction Cycle Timings
6-8
Operation type
normal
dest=pc
shift(Rs)
shift(Rs)
dest=pc
The shifted register operations where the destination is the PC are not available in
Thumb state.
Cycle
1
1
2
3
1
2
1
2
3
4
Note
Copyright © 1994-2001. All rights reserved.
Address
pc+2L
pc+3L
pc+2L
alu
alu+L
alu+2L
pc+2L
pc+3L
pc+3L
pc+8
pc+12
alu
alu+4
alu+8
MAS[1:0]
i
i
i
i
i
i
2
2
2
2
Table 6-4 Data operation instruction cycles
0
0
0
0
0
0
0
0
nRW
0
0
Data
(pc+2L)
(pc+2L)
(alu)
(alu+L)
(pc+2L)
-
(pc+8)
-
(alu)
(alu+4)
nMREQ
0
0
0
0
1
0
1
0
0
0
SEQ
1
0
1
1
0
1
0
0
1
1
ARM DDI 0029G
nOPC
0
0
0
0
0
1
0
1
0
0
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