ATMEGA128A-MU Atmel, ATMEGA128A-MU Datasheet - Page 196
ATMEGA128A-MU
Manufacturer Part Number
ATMEGA128A-MU
Description
MCU 8BIT 128K ISP FLASH 64-QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA128A-MU
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
53
Program Memory Size
128KB (64K x 16)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-MLF®, 64-QFN
Processor Series
ATMEGA128x
Core
AVR8
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
Controller Family/series
AVR MEGA
No. Of I/o's
53
Eeprom Memory Size
4KB
Ram Memory Size
4KB
Cpu Speed
16MHz
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Price
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8151H–AVR–02/11
Table 20-5.
• Bit 3 – USBSn: Stop Bit Select
This bit selects the number of stop bits to be inserted by the Transmitter. The Receiver ignores
this setting.
Table 20-6.
• Bit 2:1 – UCSZn1:0: Character Size
The UCSZn1:0 bits combined with the UCSZn2 bit in UCSRnB sets the number of data bits
(character size) in a frame the Receiver and Transmitter use.
Table 20-7.
• Bit 0 – UCPOLn: Clock Polarity
This bit is used for synchronous mode only. Write this bit to zero when Asynchronous mode is
used. The UCPOLn bit sets the relationship between data output change and data input sample,
and the synchronous clock (XCKn).
Table 20-8.
UCPOLn
0
1
UCSZn2
UPMn1
0
0
0
0
1
1
1
1
0
0
1
1
Transmitted Data Changed (Output of
TxDn Pin)
Rising XCKn Edge
Falling XCKn Edge
UPMn Bits Settings
USBSn Bit Settings
UCSZn Bits Settings
UCPOLn Bit Settings
USBSn
0
1
UCSZn1
UPMn0
0
0
1
1
0
0
1
1
0
1
0
1
Parity Mode
Disabled
(Reserved)
Enabled, Even Parity
Enabled, Odd Parity
UCSZn0
0
1
0
1
0
1
0
1
Received Data Sampled (Input on
RxDn Pin)
Falling XCKn Edge
Rising XCKn Edge
Stop Bit(s)
Character Size
5-bit
6-bit
7-bit
8-bit
Reserved
Reserved
Reserved
9-bit
2-bits
1-bit
ATmega128A
196
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