SAM7S128 Atmel Corporation, SAM7S128 Datasheet - Page 6
SAM7S128
Manufacturer Part Number
SAM7S128
Description
Manufacturer
Atmel Corporation
Specifications of SAM7S128
Flash (kbytes)
128 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)
32
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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Contents
vi
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Memory Interface
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
Coprocessor Interface
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
Debug Interface
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
Instruction Cycle Timings
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.9
6.10
6.11
6.12
6.13
About the memory interface ....................................................................... 3-2
Bus interface signals .................................................................................. 3-3
Bus cycle types ........................................................................................... 3-4
Addressing signals ................................................................................... 3-11
Address timing .......................................................................................... 3-14
Data timed signals .................................................................................... 3-17
Stretching access times ............................................................................ 3-29
Action of ARM7TDMI core in debug state ................................................ 3-31
Privileged mode access ............................................................................ 3-32
Reset sequence after power up ................................................................ 3-33
About coprocessors .................................................................................... 4-2
Coprocessor interface signals .................................................................... 4-4
Pipeline following signals ............................................................................ 4-5
Coprocessor interface handshaking ........................................................... 4-6
Connecting coprocessors ......................................................................... 4-12
If you are not using an external coprocessor ............................................ 4-15
Undefined instructions .............................................................................. 4-16
Privileged instructions ............................................................................... 4-17
About the debug interface .......................................................................... 5-2
Debug systems ........................................................................................... 5-4
Debug interface signals .............................................................................. 5-6
ARM7TDMI core clock domains ............................................................... 5-10
Determining the core and system state .................................................... 5-12
About EmbeddedICE Logic ...................................................................... 5-13
Disabling EmbeddedICE .......................................................................... 5-15
Debug Communications Channel ............................................................. 5-16
About the instruction cycle timing tables .................................................... 6-3
Branch and branch with link ....................................................................... 6-4
Thumb branch with link ............................................................................... 6-5
Branch and Exchange ................................................................................ 6-6
Data operations .......................................................................................... 6-7
Multiply and multiply accumulate ................................................................ 6-9
Load register ............................................................................................. 6-12
Store register ............................................................................................ 6-14
Load multiple registers ............................................................................. 6-15
Store multiple registers ............................................................................. 6-17
Data swap ................................................................................................. 6-18
Software interrupt and exception entry ..................................................... 6-19
Coprocessor data operation ..................................................................... 6-20
Copyright © 1994-2001. All rights reserved.
ARM DDI 0029G
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