ATxmega128B3 Atmel Corporation, ATxmega128B3 Datasheet - Page 32
ATxmega128B3
Manufacturer Part Number
ATxmega128B3
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega128B3
Flash (kbytes)
128 Kbytes
Pin Count
64
Max. Operating Frequency
32 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
36
Ext Interrupts
36
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
2
Twi (i2c)
1
Uart
1
Segment Lcd
100
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
12
Adc Speed (ksps)
2000
Analog Comparators
2
Resistive Touch Screen
No
Temp. Sensor
Yes
Crypto Engine
AES/DES
Sram (kbytes)
4
Eeprom (bytes)
2048
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
Yes
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.6 to 3.6
Operating Voltage (vcc)
1.6 to 3.6
Fpu
No
Mpu / Mmu
no / no
Timers
2
Output Compare Channels
6
Input Capture Channels
6
Pwm Channels
6
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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4.15.5
8291A–AVR–10/11
FUSEBYTE5 – Fuse Byte 5
devices with JTAG interface. A reset is required before this bit will be read correctly after it is
changed.
Table 4-6.
• Bit 7:6 – Reserved
These bits are reserved. For compatibility with future devices, always write these bits to one
when this register is written.
• Bit 5:4 – BODACT[1:0]: BOD Operation in Active Mode
These fuse bits set the BOD operation mode when the device is in active and idle mode. For
details on the BOD and BOD operation modes refer to
Table 4-7.
• Bit 3 – EESAVE: EEPROM is Preserved through the Chip Erase
A chip erase command will normally erase the flash, EEPROM and internal SRAM. If this fuse is
programmed, the EEPROM is not erased during chip erase. This is useful if EEPROM is used to
store data independent of software revision.
Table 4-8.
Changes to the EESAVE fuse bit take effect immediately after the write timeout elapses. Hence,
it is possible to update EESAVE and perform a chip erase according to the new setting of
EESAVE without leaving and reentering programming mode.
Bit
+0x05
Read/Write
Initial Value
BODACT[1:0]
EESAVE
JTAGEN
00
01
10
11
0
1
0
1
JTAG Enable
BOD operation modes in active and idle modes.
EEPROM preserved through chip erase
R/W
7
–
1
Description
Reserved
BOD enabled in sampled mode
BOD enabled continuously
BOD disabled
Description
EEPROM is preserved during chip erase
EEPROM is erased during chip erase
Description
JTAG enabled
JTAG disabled
R/W
6
–
1
R
5
BODACT[1:0]
–
4
R
–
EESAVE
R/W
3
–
Atmel AVR XMEGA B
”Brownout Detection” on page
R/W
2
–
BODLEVEL[2:0]
R/W
1
–
R/W
0
–
107.
FUSEBYTE5
32
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