ATMEGA16L-8MI Atmel, ATMEGA16L-8MI Datasheet - Page 167
![IC AVR MCU 16K 8MHZ IND 44-QFN](/photos/12/13/121316/313-44-qfn_sml.jpg)
ATMEGA16L-8MI
Manufacturer Part Number
ATMEGA16L-8MI
Description
IC AVR MCU 16K 8MHZ IND 44-QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA16L-8MI
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
32
Program Memory Size
16KB (8K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K 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
44-VQFN Exposed Pad
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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USART Baud Rate
Registers – UBRRL
and UBRRH
2466T–AVR–07/10
• Bit 2:1 – UCSZ1:0: Character Size
The UCSZ1:0 bits combined with the UCSZ2 bit in UCSRB sets the number of data bits (Char-
acter Size) in a frame the Receiver and Transmitter use.
Table 66. UCSZ Bits Settings
• Bit 0 – UCPOL: Clock Polarity
This bit is used for Synchronous mode only. Write this bit to zero when Asynchronous mode is
used. The UCPOL bit sets the relationship between data output change and data input sample,
and the synchronous clock (XCK).
Table 67. UCPOL Bit Settings
The UBRRH Register shares the same I/O location as the UCSRC Register. See the
UBRRH/ UCSRC Registers” on page 162
• Bit 15 – URSEL: Register Select
This bit selects between accessing the UBRRH or the UCSRC Register. It is read as zero when
reading UBRRH. The URSEL must be zero when writing the UBRRH.
• Bit 14:12 – Reserved Bits
These bits are reserved for future use. For compatibility with future devices, these bit must be
written to zero when UBRRH is written.
Bit
Read/Write
Initial Value
UCPOL
0
1
UCSZ2
0
0
0
0
1
1
1
1
Transmitted Data Changed (Output of
TxD Pin)
Rising XCK Edge
Falling XCK Edge
URSEL
R/W
R/W
15
7
0
0
R/W
14
UCSZ1
R
–
6
0
0
0
0
1
1
0
0
1
1
R/W
13
R
–
5
0
0
R/W
12
R
–
4
0
0
UBRR[7:0]
section which describes how to access this register.
UCSZ0
0
1
0
1
0
1
0
1
R/W
R/W
11
3
0
0
Received Data Sampled (Input on
RxD Pin)
Rising XCK Edge
Falling XCK Edge
R/W
R/W
10
2
0
0
UBRR[11:8]
Character Size
R/W
R/W
9
1
0
0
Reserved
Reserved
Reserved
5-bit
6-bit
7-bit
8-bit
9-bit
ATmega16(L)
R/W
R/W
8
0
0
0
UBRRH
UBRRL
“Accessing
167
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