AT32UC3C2256C Atmel Corporation, AT32UC3C2256C Datasheet - Page 329
AT32UC3C2256C
Manufacturer Part Number
AT32UC3C2256C
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT32UC3A0128.pdf
(377 pages)
2.AT32UC3A0128.pdf
(159 pages)
3.AT32UC3C0128C.pdf
(1313 pages)
4.AT32UC3C0128C.pdf
(108 pages)
Specifications of AT32UC3C2256C
Flash (kbytes)
256 Kbytes
Pin Count
64
Max. Operating Frequency
66 MHz
Cpu
32-bit AVR
Hardware Qtouch Acquisition
No
Max I/o Pins
45
Ext Interrupts
64
Usb Transceiver
1
Quadrature Decoder Channels
1
Usb Speed
Full Speed
Usb Interface
Device + OTG
Spi
5
Twi (i2c)
2
Uart
4
Can
2
Lin
4
Ssc
1
Ethernet
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
11
Adc Resolution (bits)
12
Adc Speed (ksps)
2000
Analog Comparators
2
Resistive Touch Screen
No
Dac Channels
2
Dac Resolution (bits)
12
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
68
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
3.0 to 3.6 or 4.5 to 5.5
Operating Voltage (vcc)
3.0 to 3.6 or 4.5 to 5.5
Fpu
Yes
Mpu / Mmu
Yes / No
Timers
3
Output Compare Channels
13
Input Capture Channels
6
Pwm Channels
14
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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- AT32UC3A0128 PDF datasheet
- AT32UC3A0128 PDF datasheet #2
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- AT32UC3C0128C PDF datasheet #4
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- Download datasheet (20Mb)
Figure 18-24. TDF Optimization Disabled (MODE.TDFMODE = 0). TDF Wait States between Read and Write accesses on
18.6.7
18.6.7.1
18.6.7.2
32117C–AVR-08/11
Write2 controlling
Read1 controlling
NBS0, NBS1,
signal(NWE)
signal(NRD)
A[AD_MSB:2]
CLK_SMC
A0, A1
D[15:0]
External Wait
Restriction
Frozen mode
the Same Chip Select.
Any access can be extended by an external device using the NWAIT input signal of the SMC.
The External Wait Mode field of the MODE register (MODE.EXNWMODE) on the corresponding
chip select must be written to either two (frozen mode) or three (ready mode). When the
MODE.EXNWMODE field is written to zero (disabled), the NWAIT signal is simply ignored on
the corresponding chip select. The NWAIT signal delays the read or write operation in regards to
the read or write controlling signal, depending on the read and write modes of the corresponding
chip select.
When one of the MODE.EXNWMODE is enabled, it is mandatory to program at least one hold
cycle for the read/write controlling signal. For that reason, the NWAIT signal cannot be used in
Page Mode
The NWAIT signal is assumed to be a response of the external device to the read/write request
of the SMC. Then NWAIT is examined by the SMC only in the pulse state of the read or write
controlling signal. The assertion of the NWAIT signal outside the expected period has no impact
on SMC behavior.
When the external device asserts the NWAIT signal (active low), and after internal synchroniza-
tion of this signal, the SMC state is frozen, i.e., SMC internal counters are frozen, and all control
signals remain unchanged. When the synchronized NWAIT signal is deasserted, the SMC com-
pletes the access, resuming the access from the point where it was stopped. See
on page
delay the access and to freeze the SMC.
TDFCYCLES = 5
Read1 cycle
330. This mode must be selected when the external device uses the NWAIT signal to
(Section
Read1 hold = 1
18.6.9), or in Slow Clock Mode
Read to Write
Wait State
TDFCYCLES = 5
4 TDF WAIT STATES
(Section
18.6.8).
Write2 setup = 1
(optimization disabled)
TDFMODE=0
Write 2 cycle
AT32UC3C
Figure 18-25
329
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