Rainbow-electronics ATmega128RFA1 Manuel d'utilisateur télécharger pdf (Page 272)

272

8266A-MCU Wireless-12/09

ATmega128RFA1

The Output Compare Registers contain a 16-bit value that is continuously compared

with the counter value (TCNT1). A match can be used to generate an Output Compare

interrupt, or to generate a waveform output on the OC1A 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 section "Accessing 16-bit Registers" for details.

• Bit 7:0 – OCR1AL7:0 - Timer/Counter1 Output Compare Register Low Byte

18.11.8 OCR1BH – Timer/Counter1 Output Compare Register B High Byte

Bit 7 6 5 4 3 2 1 0

NA ($8B) OCR1BH7:0 OCR1BH

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 (TCNT1). A match can be used to generate an Output Compare

interrupt, or to generate a waveform output on the OC1B 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 section "Accessing 16-bit Registers" for details.

• Bit 7:0 – OCR1BH7:0 - Timer/Counter1 Output Compare Register High Byte

18.11.9 OCR1BL – Timer/Counter1 Output Compare Register B Low Byte

Bit 7 6 5 4 3 2 1 0

NA ($8A) OCR1BL7:0 OCR1BL

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 (TCNT1). A match can be used to generate an Output Compare

interrupt, or to generate a waveform output on the OC1B 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 section "Accessing 16-bit Registers" for details.

• Bit 7:0 – OCR1BL7:0 - Timer/Counter1 Output Compare Register Low Byte

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Rainbow-electronics ATmega128RFA1 Manuel d'utilisateur Page 272