AT32UC3L0256 Atmel Corporation, AT32UC3L0256 Datasheet - Page 100

• Manufacturer Part Number: AT32UC3L0256
• Manufacturer: Atmel Corporation

Specifications of AT32UC3L0256

• Flash (kbytes): 256 Kbytes
• Pin Count: 48
• Max. Operating Frequency: 50 MHz
• Cpu: 32-bit AVR
• # Of Touch Channels: 17
• Hardware Qtouch Acquisition: Yes
• Max I/o Pins: 36
• Ext Interrupts: 36
• Usb Speed: No
• Usb Interface: No
• Spi: 5
• Twi (i2c): 2
• Uart: 4
• Lin: 4
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 12
• Adc Speed (ksps): 460
• Analog Comparators: 8
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 16
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.62 to 3.6
• Operating Voltage (vcc): 1.62 to 3.6
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 6
• Output Compare Channels: 18
• Input Capture Channels: 12
• Pwm Channels: 35
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

8.9.1
• BODEN: Brown Out Detector Enable
• BODHYST: Brown Out Detector Hysteresis
• BODLEVEL: Brown Out Detector Trigger Level
• UPROT, SECURE, BOOTPROT, EPFL, LOCK
8.9.1.1
32145A–12/2011
BODEN
00
01
10
11
BODLEVEL[0]
31
23
15
7
0: The Brown out detector hysteresis is disabled
1: The Brown out detector hysteresis is enabled
This controls the voltage trigger level for the Brown out detector. Refer to
These are Flash Controller fuses and are described in the FLASHCDW section.
Flash General Purpose Fuse Register Low (FGPFRLO)
BODEN
Default Fuse Value
Description
BOD disabled
BOD enabled, BOD reset enabled
BOD enabled, BOD reset disabled
BOD disabled
UPROT
30
22
14
6
The devices are shipped with the FGPFRLO register value:0xE07FFFFF:
• BODEN fuses set to 11. BOD is disabled.
• BODHYST fuse set to 1. The BOD hysteresis is enabled.
• BODLEVEL fuses set to 000000. This is the minimum voltage trigger level for BOD. This level
• UPROT fuse set to 1.
• SECURE fuse set to 11.
• BOOTPROT fuses set to 111. The bootloader protection is disabled.
• EPFL fuse set to 1. External privileged fetch is not locked.
• LOCK fuses set to 1111111111111111. No region locked.
After the JTAG or aWire chip erase command, the FGPFR register value is 0xFFFFFFFF.
is lower than the POR level, so when BOD is enabled, it will never trigger with this default
value.
BODHYST
29
21
13
5
SECURE
28
20
12
4
LOCK[15:8]
LOCK[7:0]
27
19
11
3
”Electrical Characteristics” on page
BODLEVEL[5:1]
BOOTPROT
26
18
10
2
AT32UC3L0128/256
25
17
9
1
1.
EPFL
24
16
8
0
100