AT91SAM9M10-CU Atmel, AT91SAM9M10-CU Datasheet - Page 540
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AT91SAM9M10-CU
Manufacturer Part Number
AT91SAM9M10-CU
Description
IC MCU 16/32BIT ARM9 324TFBGA
Manufacturer
Atmel
Series
AT91SAMr
Specifications of AT91SAM9M10-CU
Core Processor
ARM9
Core Size
16/32-Bit
Speed
400MHz
Connectivity
EBI/EMI, Ethernet, I²C, SPI, SSC, UART/USART, USB
Peripherals
AC'97, DMA, LCD, POR, PWM, WDT
Number Of I /o
160
Program Memory Size
64KB (64K x 8)
Program Memory Type
ROM
Ram Size
128K x 8
Voltage - Supply (vcc/vdd)
0.9 V ~ 1.1 V
Data Converters
A/D 8x10b
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
32 KB
Interface Type
2-Wire, SPI, USART
Maximum Clock Frequency
133 MHz
Number Of Programmable I/os
5
Number Of Timers
2 x 16 bit
Operating Supply Voltage
1.65 V to 3.6 V
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, AT91SAM9M10-G45-EK
Controller Family/series
AT91
No. Of I/o's
160
Ram Memory Size
64KB
Cpu Speed
400MHz
No. Of Timers
2
Rohs Compliant
Yes
Cpu Family
AT91
Device Core
ARM926EJ-S
Device Core Size
32b
Frequency (max)
400MHz
Total Internal Ram Size
64KB
# I/os (max)
160
Number Of Timers - General Purpose
7
Operating Supply Voltage (typ)
1.8/2.5/3.3V
Operating Supply Voltage (max)
1.1/1.95/3.6V
Operating Supply Voltage (min)
0.9/1.65/1.8/3V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
RISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
324
Package Type
TFBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT91SAM9M10-CU
Manufacturer:
Atmel
Quantity:
996
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Figure 32-11. Bit Resynchronization
32.7.3.4
6355B–ATARM–21-Jun-10
Asynchronous Receiver
Oversampling
16x Clock
Sampling
point
RXD
If the USART is programmed in asynchronous operating mode (SYNC = 0), the receiver over-
samples the RXD input line. The oversampling is either 16 or 8 times the Baud Rate clock,
depending on the OVER bit in the Mode Register (US_MR).
The receiver samples the RXD line. If the line is sampled during one half of a bit time at 0, a start
bit is detected and data, parity and stop bits are successively sampled on the bit rate clock.
If the oversampling is 16, (OVER at 0), a start is detected at the eighth sample at 0. Then, data
bits, parity bit and stop bit are sampled on each 16 sampling clock cycle. If the oversampling is 8
(OVER at 1), a start bit is detected at the fourth sample at 0. Then, data bits, parity bit and stop
bit are sampled on each 8 sampling clock cycle.
The number of data bits, first bit sent and parity mode are selected by the same fields and bits
as the transmitter, i.e. respectively CHRL, MODE9, MSBF and PAR. For the synchronization
mechanism only, the number of stop bits has no effect on the receiver as it considers only one
stop bit, regardless of the field NBSTOP, so that resynchronization between the receiver and the
transmitter can occur. Moreover, as soon as the stop bit is sampled, the receiver starts looking
for a new start bit so that resynchronization can also be accomplished when the transmitter is
operating with one stop bit.
Figure 32-12
operates in asynchronous mode.
and
Synchro.
Error
Figure 32-13
Synchro.
Jump
illustrate start detection and character reception when USART
Expected edge
Tolerance
Jump
Sync
Synchro.
Error
AT91SAM9M10
540
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