AT32UC3A3128 Atmel Corporation, AT32UC3A3128 Datasheet - Page 146

• 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

12.9
12.9.1
Table 12-8.
• BODEN: Brown Out Detector Enable
Table 12-9.
• BODHYST: Brown Out Detector Hystersis
• BODLEVEL: Brown Out Detector Trigger Level
• LOCK, EPFL, BOOTPROT
12.9.2
32072G–11/2011
BODEN
0x0
0x1
0x2
0x3
GPF31
31
23
15
7
Fuses Settings
0: The BOD hysteresis is disabled
1: The BOD hysteresis is enabled
This controls the voltage trigger level for the Brown out detector. For value description refer to Electrical Characteristics chapter.
If the BODLEVEL is set higher than VDDCORE and enabled by fuses, the part will be in constant reset. To recover from this
situation, apply an external voltage on VDDCORE that is higher than the BOD Trigger level and disable the BOD.
These are Flash controller fuses and are described in the FLASHC chapter.
Flash General Purpose Fuse Register Low (FGPFRLO)
Default Fuse Value
FGPFRLO Register Description
BODEN Field Description
Description
Brown Out Detector (BOD) disabled
BOD enabled, BOD reset enabled
BOD enabled, BOD reset disabled
BOD disabled
GPF30
30
22
14
6
BODLEVEL[3:0]
The flash block contains 32 general purpose fuses. These 32 fuses can be found in the Flash
General Purpose Fuse Register Low (FGPFRLO) of the Flash Controller (FLASHC).
Some of the FGPFRLO fuses have defined meanings outside the FLASHC and are described in
this section.
The general purpose fuses are set by a JTAG chip erase.
The devices are shipped with the FGPFRLO register value: 0xFFF7FFFF:
• GPF31 reserved for future use
GPF29
29
21
13
5
28
20
12
4
LOCK[15:8]
LOCK[7:0]
BODEN
27
19
11
3
BOOTPROT
BODHYST
26
18
10
2
25
17
9
1
BODLEVEL[5:4]
EPFL
24
16
8
0
146