ATTINY4313-MU Atmel, ATTINY4313-MU Datasheet - Page 140
ATTINY4313-MU
Manufacturer Part Number
ATTINY4313-MU
Description
IC MCU AVR 4K FLASH 20QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY4313-MU
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
18
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-VQFN Exposed Pad, 20-HVQFN, 20-SQFN, 20-DHVQFN
Processor Series
ATtiny
Core
AVR
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
SPI, USART, USI
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
18
Number Of Timers
2
Operating Supply Voltage
3.3 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Operating Temperature Range
- 40 C to + 85 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATTINY4313-MU
Manufacturer:
HITTITE
Quantity:
101
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14.10.5
140
ATtiny2313A/4313
UBRRL and UBRRH – USART Baud Rate Registers
• Bit 3 – USBS: Stop Bit Select
This bit selects the number of stop bits to be inserted by the Transmitter. The Receiver ignores
this setting.
Table 14-6.
• 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. See
Table 14-7.
• 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 14-8.
Bit
0x02 (0x22)
0x09 (0x29)
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
USBS Bit Settings
UCSZ Bits Settings
UCPOL Bit Settings
R/W
15
R
–
7
0
0
USBS
0
1
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
Stop Bit(s)
1-bit
2-bit
R
0
–
4
0
UBRR[7:0]
UCSZ0
0
1
0
1
0
1
0
1
R/W
R/W
11
3
0
0
Received Data Sampled (Input on
RxD Pin)
Falling XCK Edge
Rising XCK Edge
R/W
R/W
Character Size
5-bit
6-bit
7-bit
8-bit
Reserved
Reserved
Reserved
9-bit
10
2
0
0
UBRR[11:8]
Table
R/W
R/W
9
1
0
0
14-7.
R/W
R/W
8
0
0
0
UBRRH
UBRRL
8246A–AVR–11/09
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