AT32UC3A3128 Atmel Corporation, AT32UC3A3128 Datasheet - Page 865

• Manufacturer Part Number: AT32UC3A3128
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A3128

• 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: 110
• Ext Interrupts: 110
• Usb Transceiver: 1
• Usb Speed: Hi-Speed
• Usb Interface: Device + OTG
• Spi: 6
• Twi (i2c): 2
• Uart: 4
• Lin: 4
• Ssc: 1
• Sd / Emmc: 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): 128
• Self Program Memory: YES
• External Bus Interface: 1
• Dram Memory: sdram
• 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: 18
• Input Capture Channels: 12
• Pwm Channels: 12
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

31.4.3
31.4.4
31.5
Figure 31-4. Memory Stick pull-down overview
32072G–11/2011
Connection to a Memory Stick
Interrupt Controller
DMA Controller (DMACA)
MSI interrupt line is connected to the Interrupt Controller. In order to handle interrupts, Interrupt
Controller(INTC) must be programmed before configuring MSI.
Handshake signals are connected to DMACA. In order to accelerate transfer from/to flash card,
DMACA must be programmed before using MSI.
The Memory Stick serial clock (SCLK) is maximum 20 MHz in serial mode, and maxi-
mum 40 MHz in parallel mode. SCLK is derived from peripheral clock (CLK_MSI) :
f_SCLK = f_CLK_MSI / [2*(CLKDIV+1)] where CLKDIV = {0..255}.
Pin DATA[1] is a power supply for some Memory Stick version, so leaving the pull-
down resistor connected may result in wasteful current consumption. User should leave
the DATA[1] pin pull-down open when Memory Stick Ver. 1.x is inserted.
Table 31-1.
Memory Stick removed
Memory Stick inserted
Memory Stick pull-down configuration
Pull-down enabled
Memory Stick 1.x
Pull-down open
Memory Stick PRO
Pull-down enabled
Pull-down enabled
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