AT90PWM3B-16MU Atmel, AT90PWM3B-16MU Datasheet - Page 199
AT90PWM3B-16MU
Manufacturer Part Number
AT90PWM3B-16MU
Description
IC MCU AVR RISC 8K FLASH 32-QFN
Manufacturer
Atmel
Series
AVR® 90PWM Lightingr
Datasheet
1.AT90PWM3B-16SU.pdf
(361 pages)
Specifications of AT90PWM3B-16MU
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
27
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 11x10b; D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
32-QFN
Package
32QFN EP
Device Core
AVR
Family Name
90P
Maximum Speed
16 MHz
Operating Supply Voltage
3.3|5 V
Data Bus Width
8 Bit
Number Of Programmable I/os
27
Interface Type
SPI/USART
On-chip Adc
11-chx10-bit
Number Of Timers
2
Processor Series
AT90PWMx
Core
AVR8
Data Ram Size
512 B
Maximum Clock Frequency
16 MHz
Maximum Operating Temperature
+ 105 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, ATAVRFBKIT, ATAVRISP2
Minimum Operating Temperature
- 40 C
On-chip Dac
10 bit, 1 Channel
For Use With
ATSTK600-SOIC - STK600 SOCKET/ADAPTER FOR SOIC770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1005 - ISP 4PORT FOR ATMEL AVR MCU JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPIATAVRMC200 - KIT EVAL FOR AT90PWM3 ASYNCATAVRFBKIT - KIT DEMO BALLAST FOR AT90PWM2ATAVRISP2 - PROGRAMMER AVR IN SYSTEMATSTK520 - ADAPTER KIT FOR 90PWM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT90PWM3B-16MU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
AT90PWM3B-16MUR
Manufacturer:
TI
Quantity:
1 829
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18.8.3
4317J–AVR–08/10
Asynchronous Operational Range
The operational range of the Receiver is dependent on the mismatch between the received bit
rate and the internally generated baud rate. If the Transmitter is sending frames at too fast or too
slow bit rates, or the internally generated baud rate of the Receiver does not have a similar (see
Table
bit.
The following equations can be used to calculate the ratio of the incoming data rate and internal
receiver baud rate.
D
S
S
S
R
receiver baud rate.
R
Table 18-2
that Normal Speed mode has higher toleration of baud rate variations.
Table 18-2.
F
M
slow
fast
# (Data+Parity Bit)
is the ratio of the fastest incoming data rate that can be accepted in relation to the
Sum of character size and parity size (D = 5 to 10 bit)
Samples per bit. S = 16 for Normal Speed mode and S = 8 for Double Speed
mode.
First sample number used for majority voting. S
for Double Speed mode.
Middle sample number used for majority voting. S
S
is the ratio of the slowest incoming data rate that can be accepted in relation to the
receiver baud rate.
18-2) base frequency, the Receiver will not be able to synchronize the frames to the start
M
= 5 for Double Speed mode.
10
D
5
6
7
8
9
R
and
slow
Recommended Maximum Receiver Baud Rate Error for Normal Speed Mode
(U2X = 0)
Table 18-3
=
------------------------------------------ -
S 1
–
(
R
D
+
slow
93.20
94.12
94.81
95.36
95.81
96.17
+
D S ⋅
list the maximum receiver baud rate error that can be tolerated. Note
1
(%)
)S
+
S
F
R
106.67
105.79
105.11
104.58
104.14
103.78
fast
(%)
Max Total Error (%)
+5.79/-5.88
+5.11/-5.19
+4.58/-4.54
+4.14/-4.19
+3.78/-3.83
F
+6.67/-6.8
= 8 for normal speed and S
M
AT90PWM2/3/2B/3B
= 9 for normal speed and
R
fast
=
-----------------------------------
(
D
(
+
D
1
+
)S
Recommended Max
2
Receiver Error (%)
)S
+
S
M
± 3.0
± 2.5
± 2.0
± 2.0
± 1.5
± 1.5
F
= 4
199
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