Atmega128rfa1 – Rainbow Electronics ATmega128RFA1 User Manual
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8266A-MCU Wireless-12/09
ATmega128RFA1
18.11.38 OCR4BH – Timer/Counter4 Output Compare Register B High Byte
Bit
7
6
5
4
3
2
1
0
NA ($AB)
OCR4BH7:0
OCR4BH
Read/Write
RW
RW
RW
RW
RW
RW
RW
RW
Initial Value
0
0
0
0
0
0
0
0
The Output Compare Registers contain a 16-bit value that is continuously compared
with the counter value (TCNT4). A match can be used to generate an Output Compare
interrupt. The Output Compare Registers are 16-bit in size. To ensure that both the high
and low bytes are written simultaneously when the CPU writes to these registers, the
access is performed using an 8-bit temporary High Byte Register (TEMP). This
temporary register is shared by all the other 16-bit registers. See section "Accessing 16-
bit Registers" for details.
•
Bit 7:0 – OCR4BH7:0 - Timer/Counter4 Output Compare Register High Byte
18.11.39 OCR4BL – Timer/Counter4 Output Compare Register B Low Byte
Bit
7
6
5
4
3
2
1
0
NA ($AA)
OCR4BL7:0
OCR4BL
Read/Write
R
RW
RW
RW
RW
RW
RW
RW
Initial Value
0
0
0
0
0
0
0
0
The Output Compare Registers contain a 16-bit value that is continuously compared
with the counter value (TCNT4). A match can be used to generate an Output Compare
interrupt. The Output Compare Registers are 16-bit in size. To ensure that both the high
and low bytes are written simultaneously when the CPU writes to these registers, the
access is performed using an 8-bit temporary High Byte Register (TEMP). This
temporary register is shared by all the other 16-bit registers. See section "Accessing 16-
bit Registers" for details.
•
Bit 7:0 – OCR4BL7:0 - Timer/Counter4 Output Compare Register Low Byte
18.11.40 OCR4CH – Timer/Counter4 Output Compare Register C High Byte
Bit
7
6
5
4
3
2
1
0
NA ($AD)
OCR4CH7:0
OCR4CH
Read/Write
RW
RW
RW
RW
RW
RW
RW
RW
Initial Value
0
0
0
0
0
0
0
0
The Output Compare Registers contain a 16-bit value that is continuously compared
with the counter value (TCNT4). A match can be used to generate an Output Compare
interrupt. The Output Compare Registers are 16-bit in size. To ensure that both the high
and low bytes are written simultaneously when the CPU writes to these registers, the
access is performed using an 8-bit temporary High Byte Register (TEMP). This
temporary register is shared by all the other 16-bit registers. See section "Accessing 16-
bit Registers" for details.
•
Bit 7:0 – OCR4CH7:0 - Timer/Counter4 Output Compare Register High Byte