AT90CAN128-16AJ Atmel, AT90CAN128-16AJ Datasheet - Page 200
![IC MCU AVR FLASH 128K 64TQFP](/photos/12/13/121332/313-64-tqfp_sml.jpg)
AT90CAN128-16AJ
Manufacturer Part Number
AT90CAN128-16AJ
Description
IC MCU AVR FLASH 128K 64TQFP
Manufacturer
Atmel
Series
AVR® 90CANr
Specifications of AT90CAN128-16AJ
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
CAN, EBI/EMI, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
53
Program Memory Size
128KB (128K x 8)
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-TQFP, 64-VQFP
For Use With
ATDVK90CAN1 - KIT DEV FOR AT90CAN128 MCU
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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17.12 Examples of Baud Rate Setting
Table 17-9.
Note:
200
Baud
Rate
(bps)
2400
4800
9600
14.4k
19.2k
28.8k
38.4k
57.6k
76.8k
115.2k
230.4k
250k
500k
1M
Max.
(1)
1. UBRRn = 0, Error = 0.0%
UBRRn
AT90CAN32/64/128
25
12
6
3
2
1
1
0
–
–
–
–
–
–
62.5 Kbps
U2Xn = 0
Examples of UBRRn Settings for Commonly Frequencies
Error
f
clk
-18.6%
-7.0%
0.2%
0.2%
8.5%
8.5%
8.5%
8.5%
io
–
–
–
–
–
–
= 1.0000 MHz
• Bit 15:12 – Reserved Bits
These bits are reserved for future use. For compatibility with future devices, these bit must be
written to zero when UBRRnH is written.
• Bit 11:0 – UBRRn11:0: USARTn Baud Rate Register
This is a 12-bit register which contains the USARTn baud rate. The UBRRnH contains the four
most significant bits, and the UBRRnL contains the eight least significant bits of the USARTn
baud rate. Ongoing transmissions by the Transmitter and Receiver will be corrupted if the baud
rate is changed. Writing UBRRnL will trigger an immediate update of the baud rate prescaler.
For standard crystal, resonator and external oscillator frequencies, the most commonly used
baud rates for asynchronous operation can be generated by using the UBRRn settings in
17-9
from the target baud rate, are bold in the table. Higher error ratings are acceptable, but the
Receiver will have less noise resistance when the error ratings are high, especially for large
serial frames (see
lated using the following equation:
UBRRn
up to
51
25
12
8
6
3
2
1
1
0
–
–
–
–
U2Xn = 1
125 Kbps
Table
Error
-18.6%
-3.5%
-7.0%
0.2%
0.2%
0.2%
8.5%
8.5%
8.5%
8.5%
–
–
–
–
17-12. UBRRn values which yield an actual baud rate differing less than 0.5%
“Asynchronous Operational Range” on page
UBRRn
47
23
11
7
5
3
2
1
1
0
–
–
–
–
115.2 Kbps
U2Xn = 0
f
Error
clk
-25.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
io
–
–
–
–
Error[%]
= 1.8432 MHz
UBRRn
95
47
23
15
11
=
7
5
3
2
1
0
–
–
–
230.4 Kbps
U2Xn = 1
⎛
⎝
1
–
Error
BaudRate
------------------------------------------------------- -
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
–
–
–
BaudRate
Closest Match
UBRRn
51
25
12
8
6
1
0
3
2
1
–
–
–
–
192). The error values are calcu-
U2Xn = 0
125 Kbps
Error
f
⎞
⎠
clk
-18.6%
-3.5%
-7.0%
0.2%
0.2%
0.2%
8.5%
8.5%
8.5%
8.5%
•
io
100%
–
–
–
–
= 2.0000 MHz
UBRRn
103
51
25
16
12
8
6
3
2
1
–
–
–
–
7679H–CAN–08/08
U2Xn = 1
250 Kbps
Error
-3.5%
-7.0%
0.2%
0.2%
0.2%
2.1%
0.2%
8.5%
8.5%
8.5%
Table
–
–
–
–
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