AT32UC3A4128 Atmel Corporation, AT32UC3A4128 Datasheet - Page 179
AT32UC3A4128
Manufacturer Part Number
AT32UC3A4128
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 AT32UC3A4128
Flash (kbytes)
128 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
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
No
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
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- AT32UC3A0128 PDF datasheet
- AT32UC3A0128 PDF datasheet #2
- AT32UC3A0128 PDF datasheet #3
- AT32UC3A3128 PDF datasheet #4
- AT32UC3A3128 PDF datasheet #5
- Current page: 179 of 1012
- Download datasheet (16Mb)
15.5.1
15.5.2
15.6
15.6.1
Figure 15-2. SMC Connections to Static Memory Devices
15.6.2
32072G–11/2011
Functional Description
I/O Lines
Clocks
Application Example
External Memory Mapping
Static Memory
Controller
NWR1/NBS1
NWR0/NWE
A0/NBS0
A2-A18
D0-D15
NCS0
NCS1
NCS2
NCS3
NCS4
NCS5
The SMC signals pass through the External Bus Interface (EBI) module where they are multi-
plexed. The user must first configure the I/O Controller to assign the EBI pins corresponding to
SMC signals to their peripheral function. If the I/O lines of the EBI corresponding to SMC signals
are not used by the application, they can be used for other purposes by the I/O Controller.
The clock for the SMC bus interface (CLK_SMC) is generated by the Power Manager. This clock
is enabled at reset, and can be disabled in the Power Manager. It is recommended to disable the
SMC before disabling the clock, to avoid freezing the SMC in an undefined state.
The SMC provides up to 24 address lines, A[23:0]. This allows each chip select line to address
up to 16Mbytes of memory.
If the physical memory device connected on one chip select is smaller than 16Mbytes, it wraps
around and appears to be repeated within this space. The SMC correctly handles any valid
access to the memory device within the page (see
A[23:0] is only significant for 8-bit memory, A[23:1] is used for 16-bit memory23.
NWR0/NWE
NRD
D0-D7
CS
OE
WE
D0-D7
128K x 8
SRAM
A0-A16
A2-A18
Figure 15-3 on page
NWR1/NBS1
D8-D15
NRD
CS
OE
WE
D0-D7
128K x 8
SRAM
A0-A16
180).
A2-A18
179
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