AT32UC3A464S Atmel Corporation, AT32UC3A464S Datasheet - Page 185
AT32UC3A464S
Manufacturer Part Number
AT32UC3A464S
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT32UC3A0128.pdf
(377 pages)
2.AT32UC3A0128.pdf
(33 pages)
3.AT32UC3A0128.pdf
(159 pages)
4.AT32UC3A3128.pdf
(91 pages)
5.AT32UC3A3128.pdf
(1012 pages)
Specifications of AT32UC3A464S
Flash (kbytes)
64 Kbytes
Pin Count
100
Max. Operating Frequency
66 MHz
Cpu
32-bit AVR
Hardware Qtouch Acquisition
No
Usb Transceiver
1
Usb Speed
Hi-Speed
Usb Interface
Device + OTG
Spi
6
Twi (i2c)
2
Uart
4
Ssc
1
Sd / Emmc
2
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
AES
Sram (kbytes)
128
Self Program Memory
YES
Dram Memory
No
Nand Interface
Yes
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
3.0 to 3.6
Operating Voltage (vcc)
3.0 to 3.6
Fpu
No
Mpu / Mmu
Yes / No
Timers
6
Output Compare Channels
6
Input Capture Channels
6
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT32UC3A464S-U
Manufacturer:
ATMEL
Quantity:
551
- AT32UC3A0128 PDF datasheet
- AT32UC3A0128 PDF datasheet #2
- AT32UC3A0128 PDF datasheet #3
- AT32UC3A3128 PDF datasheet #4
- AT32UC3A3128 PDF datasheet #5
- Current page: 185 of 1012
- Download datasheet (16Mb)
15.6.4.2
32072G–11/2011
Read mode
•Read is controlled by NRD (MODE.READMODE = 1)
Figure 15-8. No Setup, No Hold on NRD, and NCS Read Signals
Programming null pulse is not permitted. Pulse must be at least written to one. A null value leads
to unpredictable behavior.
As NCS and NRD waveforms are defined independently of one other, the SMC needs to know
when the read data is available on the data bus. The SMC does not compare NCS and NRD tim-
i n g s t o k n o w w h i c h s ig n a l r i s e s f i r s t . T h e R e a d M o d e b it i n t h e M O D E r e g i s t e r
(MODE.READMODE) of the corresponding chip select indicates which signal of NRD and NCS
controls the read operation.
Figure 15-9 on page 186
RAM. The read data is available t
ing edge of NRD. In this case, the MODE.READMODE bit must be written to one (read is
controlled by NRD), to indicate that data is available with the rising edge of NRD. The SMC sam-
ples the read data internally on the rising edge of CLK_SMC that generates the rising edge of
NRD, whatever the programmed waveform of NCS may be.
• Null Pulse
NBS0, NBS1,
A[AD_MSB:2]
A0, A1
CLK_SMC
D[15:0]
NRD
NCS
NRDSETUP
NCSRDPULSE
NRDCYCLE
shows the waveforms of a read operation of a typical asynchronous
PACC
after the falling edge of NRD, and turns to ‘Z’ after the ris-
NRDPULSE
NCSRDPULSE
NRDCYCLE
NRDCYCLE
NRDPULSE
NCSRDPULSE
185
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