SAM7S321 Atmel Corporation, SAM7S321 Datasheet - Page 116
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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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Coprocessor Interface
4.5
4.5.1
4-12
Connecting coprocessors
Connecting a single coprocessor
A coprocessor in an ARM7TDMI processor system must have 32-bit connections to:
•
•
•
The coprocessor can optionally have connections to:
•
•
This section describes:
•
•
An example of how to connect:
•
•
the instruction stream from memory
data written by the core, MCR
data read by the core, MRC.
data written from memory, LDC
data read to memory, STC.
Connecting a single coprocessor on page 4-12
Connecting multiple coprocessors on page 4-13.
a coprocessor into an ARM7TDMI processor system if you are using a
bidirectional bus is shown in Figure 4-5
a coprocessor into an ARM7TDMI processor system if you are using a
unidirectional bus is shown in Figure 4-6 on page 4-13.
Copyright © 1994-2001. All rights reserved.
Figure 4-5 Coprocessor connections with bidirectional bus
ARM core
Coprocessor
D[31:0]
ARM DDI 0029G
CPDRIVE
Memory
system
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