ATMEGA32-16AJ Atmel, ATMEGA32-16AJ Datasheet - Page 107
ATMEGA32-16AJ
Manufacturer Part Number
ATMEGA32-16AJ
Description
IC MCU AVR 32K 5V 16MHZ 44-TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA32-16AJ
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
32
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Manufacturer
Quantity
Price
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16-bit
Timer/Counter
Register
Description
Timer/Counter1
Control Register A –
TCCR1A
2503Q–AVR–02/11
• Bit 7:6 – COM1A1:0: Compare Output Mode for Compare unit A
• Bit 5:4 – COM1B1:0: Compare Output Mode for Compare unit B
The COM1A1:0 and COM1B1:0 control the Output Compare pins (OC1A and OC1B respec-
tively) behavior. If one or both of the COM1A1:0 bits are written to one, the OC1A output
overrides the normal port functionality of the I/O pin it is connected to. If one or both of the
COM1B1:0 bit are written to one, the OC1B output overrides the normal port functionality of the
I/O pin it is connected to. However, note that the Data Direction Register (DDR) bit correspond-
ing to the OC1A or OC1B pin must be set in order to enable the output driver.
When the OC1A or OC1B is connected to the pin, the function of the COM1x1:0 bits is depen-
dent of the WGM13:0 bits setting.
WGM13:0 bits are set to a normal or a CTC mode (non-PWM).
Table 44. Compare Output Mode, non-PWM
Table 45
mode.
Bit
Read/Write
Initial Value
COM1A1/COM1B1
shows the COM1x1:0 bit functionality when the WGM13:0 bits are set to the fast PWM
0
0
1
1
COM1A1
R/W
7
0
COM1A0
R/W
COM1A0/COM1B0
6
0
COM1B1
R/W
0
1
0
1
5
0
Table 44
COM1B0
R/W
4
0
Description
Normal port operation, OC1A/OC1B
disconnected.
Toggle OC1A/OC1B on compare match
Clear OC1A/OC1B on compare match (Set
output to low level)
Set OC1A/OC1B on compare match (Set
output to high level)
shows the COM1x1:0 bit functionality when the
FOC1A
W
3
0
FOC1B
W
2
0
WGM11
R/W
1
0
ATmega32(L)
WGM10
R/W
0
0
TCCR1A
107
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