ATTINY2313-20PJ Atmel, ATTINY2313-20PJ Datasheet - Page 127
ATTINY2313-20PJ
Manufacturer Part Number
ATTINY2313-20PJ
Description
IC MCU AVR 2K FLASH 20DIP
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY2313-20PJ
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
18
Program Memory Size
2KB (1K x 16)
Program Memory Type
FLASH
Eeprom Size
128 x 8
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
-
Other names
ATTINY2313-24PJ
ATTINY2313-24PJ
ATTINY2313-24PJ
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2543L–AVR–08/10
Table 49. Recommended Maximum Receiver Baud Rate Error for Normal Speed Mode (U2X =
0)
Table 50. Recommended Maximum Receiver Baud Rate Error for Double Speed Mode (U2X =
1)
The recommendations of the maximum receiver baud rate error was made under the assump-
tion that the Receiver and Transmitter equally divides the maximum total error.
There are two possible sources for the receivers baud rate error. The Receiver’s system clock
(XTAL) will always have some minor instability over the supply voltage range and the tempera-
ture range. When using a crystal to generate the system clock, this is rarely a problem, but for a
resonator the system clock may differ more than 2% depending of the resonators tolerance. The
second source for the error is more controllable. The baud rate generator can not always do an
exact division of the system frequency to get the baud rate wanted. In this case an UBRR value
that gives an acceptable low error can be used if possible.
# (Data+Parity Bit)
# (Data+Parity Bit)
10
10
D
D
8
9
5
6
7
8
9
R
R
slow
slow
95.36
95.81
96.17
94.12
94.92
95.52
96.00
96.39
96.70
(%)
(%)
R
R
105.66
104.92
104,35
103.90
103.53
103.23
104.58
104.14
103.78
fast
fast
(%)
(%)
Max Total Error (%)
Max Total Error (%)
+5.66/-5.88
+4.92/-5.08
+4.35/-4.48
+3.90/-4.00
+3.53/-3.61
+3.23/-3.30
+4.58/-4.54
+4.14/-4.19
+3.78/-3.83
Recommended Max
Recommended Max
Receiver Error (%)
Receiver Error (%)
± 2.5
± 2.0
± 1.5
± 1.5
± 1.5
± 1.0
± 2.0
± 1.5
± 1.5
127
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