AT32UC3A4128 Atmel Corporation, AT32UC3A4128 Datasheet - Page 816

• Manufacturer Part Number: AT32UC3A4128
• Manufacturer: Atmel Corporation

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

30.4
Table 30-1.
1.
30.5
30.5.1
30.5.2
30.5.3
30.5.4
30.6
30.6.1
32072G–11/2011
Pin Name
CMD[1:0]
CLK
DATA[7:0]
DATA[15:8]
I/O Lines Description
PP: Push/Pull, OD: Open Drain
Product Dependencies
Functional Description
Power Management
I/O Lines
Clocks
Interrupt
Bus Topology
I/O Lines Description
In order to use this module, other parts of the system must be configured correctly, as described
below.
If the CPU enters a sleep mode that disables clocks used by the MCI, the MCI will stop function-
ing and resume operation after the system wakes up from sleep mode.
The pins used for interfacing the MultiMedia Cards or SD Cards may be multiplexed with GPIO
lines. User must first program the I/O controller to assign the peripheral functions to MCI pins.
The clock for the MCI bus interface (CLK_MCI) 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
MCI before disabling the clock, to avoid freezing the MCI in an undefined state.
The MCI interrupt request line is connected to the interrupt controller. Using the MCI interrupt
requires the interrupt controller to be programmed first.
Figure 30-3. Multimedia Memory Card Bus Topology
Pin Description
Command/Response
Clock
Data 0..7 of Slot A
Data 0..7 of Slot B
Type
Input/Output/
PP/OD
Input/Output
Input/Output/PP
Input/Output/PP
(1)
910
1 2 3 4 5 6
MMC
1213 8
Comments
CMD of a MMC or SDCard/SDIO
CLK of a MMC or SD Card/SDIO
DAT[0..7] of a MMC
DAT[0..3] of a SD Card/SDIO
DAT[0..7] of a MMC
DAT[0..3] of a SD Card/SDIO
7
816