SAM9G35 Atmel Corporation, SAM9G35 Datasheet - Page 123
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SAM9G35
Manufacturer Part Number
SAM9G35
Description
Manufacturer
Atmel Corporation
Specifications of SAM9G35
Flash (kbytes)
0 Kbytes
Pin Count
217
Max. Operating Frequency
400 MHz
Cpu
ARM926
Hardware Qtouch Acquisition
No
Max I/o Pins
105
Ext Interrupts
105
Usb Transceiver
3
Usb Speed
Hi-Speed
Usb Interface
Host, Device
Spi
2
Twi (i2c)
3
Uart
6
Lin
4
Ssc
1
Ethernet
1
Sd / Emmc
2
Graphic Lcd
Yes
Video Decoder
No
Camera Interface
No
Adc Channels
12
Adc Resolution (bits)
10
Adc Speed (ksps)
440
Resistive Touch Screen
Yes
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
32
Self Program Memory
NO
External Bus Interface
1
Dram Memory
DDR2/LPDDR, SDRAM/LPSDR
Nand Interface
Yes
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8/3.3
Operating Voltage (vcc)
0.9 to 1.1
Fpu
No
Mpu / Mmu
No/Yes
Timers
6
Output Compare Channels
6
Input Capture Channels
6
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
No
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ARM DDI0198D
IRADDR
IRWAIT
IRSEQ
IRCS
IRRD
CLK
In cycle T1, a nonsequential request is made to address A and IRWAIT is asserted.
In cycle T2, IRSEQ is asserted because of the wait-state. IRWAIT is deasserted. IRCS
is unknown.
In cycle T3, the access to A completes and a sequential request is made to A+1. IRSEQ
is HIGH and IRWAIT is LOW
In cycle T4, the access to A+1 completes. No new request is issued. The values of
IRSEQ and IRWAIT are unknown.
In cycle T5, a nonsequential request is made to address B and IRWAIT is asserted
In cycle T6, IRSEQ is asserted because of the wait-state. IRWAIT is deasserted, IRCS
is unknown.
In cycle T7, the access to B completes.
For systems that also require DMA access to non zero wait state memories, the WAIT
signal is used to stall the ARM92EJ-S processor for both wait states and DMA
arbitration. Apart from the DRWD/IRWD write data signals, the information required
to perform an access is only valid during the request cycle for that access. If a TCM
access is postponed because of DMA, this information must be captured at the end of
the request cycle.
Figure 5-10 on page 5-16 shows an example of a system where DMA access is required
to a memory that has a single wait state for nonsequential accesses.
Copyright © 2001-2003 ARM Limited. All rights reserved.
T1
A
T2
T3
A+1
I(A)
Figure 5-9 Cycle timing of loopback circuit
T4
I(A+1)
T5
Tightly-Coupled Memory Interface
B
T6
T7
I(B)
5-15
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