ST72F321 datasheet(86/189 Pages) STMICROELECTRONICS

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ST72321

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16-BIT TIMER (Cont’d)

OUTPUT

COMPARE

HIGH

(OC2HR)

Read/Write

Reset Value: 1000 0000 (80h)

This is an 8-bit register that contains the high part

of the value to be compared to the CHR register.

OUTPUT

COMPARE

LOW

(OC2LR)

Read/Write

Reset Value: 0000 0000 (00h)

This is an 8-bit register that contains the low part of

the value to be compared to the CLR register.

COUNTER HIGH REGISTER (CHR)

Read Only

Reset Value: 1111 1111 (FFh)

This is an 8-bit register that contains the high part

of the counter value.

COUNTER LOW REGISTER (CLR)

Read Only

Reset Value: 1111 1100 (FCh)

This is an 8-bit register that contains the low part of

the counter value. A write to this register resets the

counter. An access to this register after accessing

the CSR register clears the TOF bit.

ALTERNATE

COUNTER

HIGH

(ACHR)

Read Only

Reset Value: 1111 1111 (FFh)

This is an 8-bit register that contains the high part

of the counter value.

ALTERNATE

COUNTER

LOW

(ACLR)

Read Only

Reset Value: 1111 1100 (FCh)

This is an 8-bit register that contains the low part of

the counter value. A write to this register resets the

counter. An access to this register after an access

to CSR register does not clear the TOF bit in the

CSR register.

INPUT CAPTURE 2 HIGH REGISTER (IC2HR)

Read Only

Reset Value: Undefined

This is an 8-bit read only register that contains the

high part of the counter value (transferred by the

Input Capture 2 event).

INPUT CAPTURE 2 LOW REGISTER (IC2LR)

Read Only

Reset Value: Undefined

This is an 8-bit read only register that contains the

low part of the counter value (transferred by the In-

put Capture 2 event).

MSB

LSB

MSB

LSB

MSB

LSB

MSB

LSB

MSB

LSB

MSB

LSB

MSB

LSB

MSB

LSB

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