AT91SAM9263B-CU Atmel, AT91SAM9263B-CU Datasheet - Page 524
AT91SAM9263B-CU
Manufacturer Part Number
AT91SAM9263B-CU
Description
IC ARM9 MCU 200 MHZ 324-TFBGA
Manufacturer
Atmel
Series
AT91SAMr
Specifications of AT91SAM9263B-CU
Core Processor
ARM9
Core Size
16/32-Bit
Speed
240MHz
Connectivity
CAN, Ethernet, I²C, MMC, SPI, SSC, UART/USART, USB
Peripherals
AC'97, LCD, POR, PWM, WDT
Number Of I /o
160
Program Memory Size
128KB (128K x 8)
Program Memory Type
ROM
Ram Size
128K x 8
Voltage - Supply (vcc/vdd)
1.08 V ~ 1.32 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
324-TFBGA
Processor Series
AT91SAMx
Core
ARM926EJ-S
Data Bus Width
32 bit
Data Ram Size
96 KB
Interface Type
2-Wire, EBI, I2S, MCI, SPI, USART
Maximum Clock Frequency
200 MHz
Number Of Programmable I/os
160
Number Of Timers
4
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
JTRACE-ARM-2M, MDK-ARM, RL-ARM, ULINK2
Development Tools By Supplier
AT91SAM-ICE, AT91-ISP, AT91SAM9263-EK
Minimum Operating Temperature
- 40 C
Package
324TFBGA
Device Core
ARM926EJ-S
Family Name
91S
Maximum Speed
200 MHz
Operating Supply Voltage
1.8|2.5|3.3 V
Controller Family/series
AT91SAM9xxx
No. Of I/o's
160
Ram Memory Size
96KB
Cpu Speed
240MHz
No. Of Timers
1
Rohs Compliant
Yes
For Use With
AT91SAM9263-EK - KIT EVAL FOR AT91SAM9263AT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
Q3735625
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT91SAM9263B-CU
Manufacturer:
IDT
Quantity:
1 043
Part Number:
AT91SAM9263B-CU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
AT91SAM9263B-CU-100
Manufacturer:
ATMEL
Quantity:
1 000
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34.6.1.2
Table 34-2.
34.6.1.3
6249H–ATARM–27-Jul-09
Source Clock
12 000 000
12 288 000
14 318 180
14 745 600
18 432 000
24 000 000
24 576 000
25 000 000
32 000 000
32 768 000
33 000 000
40 000 000
50 000 000
3 686 400
4 915 200
5 000 000
7 372 800
8 000 000
MHz
Baud Rate Calculation Example
Fractional Baud Rate in Asynchronous Mode
Baud Rate Example (OVER = 0)
Expected Baud
Table 34-2
clock frequencies. This table also shows the actual resulting baud rate and the error.
The baud rate is calculated with the following formula:
The baud rate error is calculated with the following formula. It is not recommended to work with
an error higher than 5%.
The Baud Rate generator previously defined is subject to the following limitation: the output fre-
quency changes by only integer multiples of the reference frequency. An approach to this
problem is to integrate a fractional N clock generator that has a high resolution. The generator
architecture is modified to obtain Baud Rate changes by a fraction of the reference source clock.
This fractional part is programmed with the FP field in the Baud Rate Generator Register
(US_BRGR). If FP is not 0, the fractional part is activated. The resolution is one eighth of the
38 400
38 400
38 400
38 400
38 400
38 400
38 400
38 400
38 400
38 400
38 400
38 400
38 400
38 400
38 400
38 400
38 400
38 400
Rate
Bit/s
BaudRate
Error
shows calculations of CD to obtain a baud rate at 38400 bauds for different source
=
1
–
Calculation Result
=
⎛
⎝
ExpectedBaudRate
-------------------------------------------------- -
MCK
ActualBaudRate
12.00
13.02
19.53
20.00
23.30
24.00
30.00
39.06
40.00
40.69
52.08
53.33
53.71
65.10
81.38
6.00
8.00
8.14
⁄
CD
×
16
⎞
⎠
CD
12
13
20
20
23
24
30
39
40
40
52
53
54
65
81
6
8
8
Actual Baud Rate
38 400.00
38 400.00
39 062.50
38 400.00
38 461.54
37 500.00
38 400.00
38 908.10
38 400.00
38 400.00
38 461.54
38 400.00
38 109.76
38 461.54
38 641.51
38 194.44
38 461.54
38 580.25
Bit/s
AT91SAM9263
0.00%
0.00%
1.70%
0.00%
0.16%
2.40%
0.00%
1.31%
0.00%
0.00%
0.16%
0.00%
0.76%
0.16%
0.63%
0.54%
0.16%
0.47%
Error
524
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