SAM7L64 Atmel Corporation, SAM7L64 Datasheet - Page 117

• Manufacturer Part Number: SAM7L64
• Manufacturer: Atmel Corporation

Specifications of SAM7L64

• Flash (kbytes): 64 Kbytes
• Pin Count: 144
• Max. Operating Frequency: 36 MHz
• Cpu: ARM7TDMI
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 80
• Ext Interrupts: 80
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Uart: 3
• Segment Lcd: 40
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 4
• Adc Resolution (bits): 10
• Adc Speed (ksps): 460
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 6
• Self Program Memory: YES
• 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): 1.8 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

4.5.2
ARM DDI 0029G
Connecting multiple coprocessors
If you have multiple coprocessors in your system, connect the handshake signals as
follows:
nCPI
CPA and CPB
You must multiplex the output data from the coprocessors.
Connecting multiple coprocessors is shown in Figure 4-7 on page 4-14.
The logic for Figure 4-6 is as follows:
Copyright © 1994-2001. All rights reserved.
Connect this signal to all coprocessors present in the system.
The individual CPA and CPB outputs from each coprocessor must be
ANDed together, and connected to the CPA and CPB inputs on the
ARM7TDMI processor.
ARM core
Figure 4-6 Coprocessor connections with unidirectional bus
DOUT
DIN
0
1
CSEL
CPDIN
Coprocessor
ASEL
0
1
CPDOUT
0
1
CPDRIVE
Coprocessor Interface
Memory
system
4-13