SAM7S256 Atmel Corporation, SAM7S256 Datasheet - Page 31
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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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ARM DDI 0029G
Clocks and
Interrupts
controls
Debug
Power
timing
Bus
Copyright © 1994-2001. All rights reserved.
RANGEOUT0
RANGEOUT1
ECAPCLK
BREAKPT
EXTERN1
EXTERN0
COMMRX
COMMTX
nENOUTI
DBGACK
nENOUT
nRESET
DBGRQI
BIGEND
nHIGHZ
BUSDIS
DBGRQ
DBGEN
BUSEN
nEXEC
nWAIT
HIGHZ
ISYNC
nENIN
MCLK
ECLK
nIRQ
nFIQ
APE
ABE
DBE
TBE
ALE
V
V
DD
SS
Figure 1-4 ARM7TDMI processor functional diagram
ARM7TDMI
11
TCK
TMS
TDI
nTRST
TDO
TAPSM[3:0]
IR[3:0]
nTDOEN
TCK1
TCK2
SCREG[3:0]
nM[4:0]
TBIT
A[31:0]
DOUT[31:0]
D[31:0]
DIN[31:0]
nMREQ
SEQ
nRW
MAS[1:0]
BL[3:0]
LOCK
nTRANS
ABORT
nOPC
nCPI
CPA
CPB
Boundary
scan
control
signals
Boundary
scan
Processor
mode
Processor
state
Memory
interface
Memory
management
interface
Coprocessor
interface
Introduction
1-9
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