ATMEGA2561V ATMEL [ATMEL Corporation], ATMEGA2561V Datasheet - Page 167

• Manufacturer Part Number: ATMEGA2561V
• Description: 8-bit Microcontroller with 64K/128K/256K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

OCR4CH and OCR4CL –
Output Compare Register 4 C
OCR5AH and OCR5AL –
Output Compare Register 5 A
OCR5BH and OCR5BL –
Output Compare Register 5 B
OCR5CH and OCR5CL –
Output Compare Register 5 C
2549K–AVR–01/07
The Output Compare Registers contain a 16-bit value that is continuously compared
with the counter value (TCNTn). A match can be used to generate an Output Compare
interrupt, or to generate a waveform output on the OCnx pin.
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 “Accessing 16-bit Registers” on page 139.
Bit
(0xAD)
(0xAC)
Read/Write
Initial Value
Bit
(0x129)
(0x128)
Read/Write
Initial Value
Bit
(0x12B)
(0x12A)
Read/Write
Initial Value
Bit
(0x12D)
(0x12C)
Read/Write
Initial Value
R/W
R/W
R/W
R/W
7
0
7
0
7
0
7
0
R/W
R/W
R/W
R/W
ATmega640/1280/1281/2560/2561
6
0
6
0
6
0
6
0
R/W
R/W
R/W
R/W
5
0
5
0
5
0
5
0
R/W
R/W
R/W
R/W
OCR4C[15:8]
OCR5A[15:8]
OCR5B[15:8]
OCR5C[15:8]
4
0
4
0
4
0
4
0
OCR4C[7:0]
OCR5A[7:0]
OCR5B[7:0]
OCR5C[7:0]
R/W
R/W
R/W
R/W
3
0
3
0
3
0
3
0
R/W
R/W
R/W
R/W
2
0
2
0
2
0
2
0
R/W
R/W
R/W
R/W
1
0
1
0
1
0
1
0
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
OCR4CH
OCR4CL
OCR5AH
OCR5AL
OCR5BH
OCR5BL
OCR5CH
OCR5CL
167