AT32UC3A0128 Atmel Corporation, AT32UC3A0128 Datasheet - Page 87

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AT32UC3A0128

Manufacturer Part Number
AT32UC3A0128
Description
Manufacturer
Atmel Corporation

Specifications of AT32UC3A0128

Flash (kbytes)
128 Kbytes
Pin Count
144
Max. Operating Frequency
66 MHz
Cpu
32-bit AVR
# Of Touch Channels
32
Hardware Qtouch Acquisition
No
Max I/o Pins
109
Ext Interrupts
109
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device + OTG
Spi
6
Twi (i2c)
1
Uart
4
Ssc
1
Ethernet
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
Dac Channels
2
Dac Resolution (bits)
16
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
32
Self Program Memory
YES
External Bus Interface
1
Dram Memory
sdram
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
3.0-3.6 or (1.65-1.95+3.0-3.6)
Operating Voltage (vcc)
3.0-3.6 or (1.65-1.95+3.0-3.6)
Fpu
No
Mpu / Mmu
Yes / No
Timers
10
Output Compare Channels
16
Input Capture Channels
6
Pwm Channels
13
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes

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32058KS–AVR32–01/12
6. CPU Cycle Counter does not reset the COUNT system register on COMPARE match.
7. Memory Protection Unit (MPU) is non functional.
8. The following alternate GPIO function C are not available in revE
9.
Figure 15-1. Timer/Counter clock connections on RevE
10. Local Bus fast GPIO not available in RevE.
11. Spurious interrupt may corrupt core SR mode to exception
Source
Internal
External
The device revision E does not reset the COUNT system register on COMPARE match. In
this revision, the COUNT register is clocked by the CPU clock, so when the CPU clock
stops, so does incrementing of COUNT.
Fix/Workaround
None.
Fix/Workaround
Do not use the MPU.
MACB-WOL on GPIO9 (PA09), MACB-WOL on GPIO18 (PA18), USB-USB_ID on GPIO21
(PA21), USB-USB_VBOF on GPIO22 (PA22), and all function B and C on GPIO70 to
GPIO101 (PX00 to PX39).
Fix/Workaround
Do not use these alternate B and C functions on the listed GPIO pins.
Here is the table of Rev E
Fix/Workaround
Do not use on this silicon revision.
If the rules listed in the chapter `Masking interrupt requests in peripheral modules' of the
AVR32UC Technical Reference Manual are not followed, a spurious interrupt may occur. An
interrupt context will be pushed onto the stack while the core SR mode will indicate an
exception. A RETE instruction would then corrupt the stack..
Fix/Workaround
Follow the rules of the AVR32UC Technical Reference Manual. To increase software
robustness, if an exception mode is detected at the beginning of an interrupt handler,
change the stack interrupt context to an exception context and issue a RETE instruction.
Clock connection table on Rev E
Name
TIMER_CLOCK1
TIMER_CLOCK2
TIMER_CLOCK3
TIMER_CLOCK4
TIMER_CLOCK5
XC0
XC1
XC2
Connection
32 KHz Oscillator
PBA Clock / 4
PBA Clock / 8
PBA Clock / 16
PBA Clock / 32
AT32UC3A
87

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