PIC16F88-I/ML【PDF 18/200 页】IC MCU FLASH 4KX14 EEPROM 28QFN

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114

8008H–AVR–04/11

ATtiny48/88

Writing to the TCNT1 Register blocks (removes) the compare match on the following timer clock

for all compare units.

12.11.5

OCR1AH and OCR1AL – Output Compare Register 1 A

12.11.6

OCR1BH and OCR1BL – Output Compare Register 1 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 OC1x 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 91.

12.11.7

ICR1H and ICR1L – Input Capture Register 1

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

ICP1 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

temporary High Byte Register (TEMP). This temporary register is shared by all the other 16-bit

registers. See “Accessing 16-bit Registers” on page 91.

12.11.8

TIMSK1 – Timer/Counter1 Interrupt Mask Register

Bits 7:6 – Res: Reserved Bits

These bits are reserved and will always read zero.

Bit

654

(0x89)

OCR1A[15:8]

OCR1AH

(0x88)

OCR1A[7:0]

OCR1AL

Read/Write

R/W

Initial Value

Bit

654

(0x8B)

OCR1B[15:8]

OCR1BH

(0x8A)

OCR1B[7:0]

OCR1BL

Read/Write

R/W

Initial Value

Bit

654

(0x87)

ICR1[15:8]

ICR1H

(0x86)

ICR1[7:0]

ICR1L

Read/Write

R/W

Initial Value

Bit

7654

(0x6F)

–

ICIE1

–

OCIE1B

OCIE1A

TOIE1

TIMSK1

Read/Write

R/W

Initial Value

0000

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