AT90USB1287-MUR Atmel, AT90USB1287-MUR Datasheet - Page 160
AT90USB1287-MUR
Manufacturer Part Number
AT90USB1287-MUR
Description
MCU AVR 128K FLASH 16MHZ 64QFN
Manufacturer
Atmel
Series
AVR® 90USBr
Datasheet
1.AT90USB646-MU.pdf
(461 pages)
Specifications of AT90USB1287-MUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART, USB, USB OTG
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
48
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
8K 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-VQFN Exposed Pad, 64-HVQFN, 64-SQFN, 64-DHVQFN
Processor Series
AT90USBx
Core
AVR8
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATSTK525, ATAVRISP2, ATAVRONEKIT, AT90USBKEY, ATEVK525, ATAVRQTOUCHX
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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15.8
15.8.1
160
8-bit Timer/Counter Register Description
AT90USB64/128
Timer/Counter Control Register A – TCCR2A
Figure 15-11. Timer/Counter Timing Diagram, Clear Timer on Compare Match mode, with Pres-
• Bits 7:6 – COM2A1:0: Compare Match Output A Mode
These bits control the Output Compare pin (OC2A) behavior. If one or both of the COM2A1:0
bits are set, the OC2A output overrides the normal port functionality of the I/O pin it is connected
to. However, note that the Data Direction Register (DDR) bit corresponding to the OC2A pin
must be set in order to enable the output driver.
When OC2A is connected to the pin, the function of the COM2A1:0 bits depends on the
WGM22:0 bit setting.
are set to a normal or CTC mode (non-PWM).
Table 15-1.
Bit
Read/Write
Initial Value
COM2A1
0
0
1
1
TCNTn
(clk
OCRnx
(CTC)
OCFnx
clk
clk
I/O
I/O
Tn
/8)
7
COM2A
1
R/W
0
caler (f
Compare Output Mode, non-PWM Mode
COM2A0
0
1
0
1
clk_I/O
Table 15-1
6
COM2A
0
R/W
0
TOP - 1
/8)
Description
Normal port operation, OC2A disconnected.
Toggle OC2A on Compare Match
Clear OC2A on Compare Match
Set OC2A on Compare Match
5
COM2B
1
R/W
0
shows the COM2A1:0 bit functionality when the WGM22:0 bits
4
COM2B
0
R/W
0
TOP
3
–
R
0
TOP
2
–
R
0
BOTTOM
1
WGM2
1
R/W
0
0
WGM2
0
R/W
0
BOTTOM + 1
TCCR2A
7593K–AVR–11/09
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