PIC16F785-I/SS【PDF 44/206 页】IC PIC MCU FLASH 2KX14 20SSOP

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Sheet目录3887

40页 41页 42页 43页 [44页]45页 46页 47页 48页

138

8272E–AVR–04/2013

ATmega164A/PA/324A/PA/644A/PA/1284/P

16.12.7

OCR1BH and OCR1BL – Output Compare Register1 B

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 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 113.

16.12.8

OCR3AH and OCR3AL – Output Compare Register3 A

16.12.9

OCR3BH and OCR3BL – Output Compare Register3 B

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

counter value (TCNT3). 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 113.

16.12.10 ICR1H and ICR1L – Input Capture Register 1

The Input Capture is updated with the counter (TCNT1) value each time an event occurs on the

ICPn pin (or optionally on the Analog Comparator output for Timer/Counter1). The Input Capture

can be used for defining the counter TOP value.

The Input Capture Register is 16-bit in size. To ensure that both the high and low bytes are read

simultaneously when the CPU accesses these registers, the access is performed using an 8-bit

Bit

76543210

(0x8B)

OCR1B[15:8]

OCR1BH

(0x8A)

OCR1B[7:0]

OCR1BL

Read/Write

R/W

Initial Value

00000000

Bit

76543210

(0x99)

OCR3A[15:8]

OCR3AH

(0x98)

OCR3A[7:0]

OCR3AL

Read/Write

R/W

Initial Value

00000000

Bit

76543210

(0x9B)

OCR3B[15:8]

OCR3BH

(0x9A)

OCR3B[7:0]

OCR3BL

Read/Write

R/W

Initial Value

00000000

Bit

76543210

(0x87)

ICR1[15:8]

ICR1H

(0x86)

ICR1[7:0]

ICR1L

Read/Write

R/W

Initial Value

00000000

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