ST92141 datasheet(108/179 Pages) STMICROELECTRONICS

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ST92141 - EXTENDED FUNCTION TIMER (EFT)

EXTENDED FUNCTION TIMER (Cont’d)

7.3.5 Register Description

Each Timer is associated with three control and

one status registers, and with six pairs of data reg-

isters (16-bit values) relating to the two input cap-

tures, the two output compares, the counter and

the alternate counter.

Notes:

1. In the register description on the following pag-

es, register and page numbers are given using the

example of Timer 0. On devices with more than

one timer, refer to the device register map for the

adresses and page numbers.

2. To work correctly with register pairs, it is strong-

ly recommended to use single byte instructions.

Do not use word instructions to access any of the

16-bit registers.

INPUT CAPTURE 1 HIGH REGISTER (IC1HR)

R240 - 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 1 event).

INPUT CAPTURE 1 LOW REGISTER (IC1LR)

R241 - 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 1 event).

INPUT CAPTURE 2 HIGH REGISTER (IC2HR)

R242 - 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)

R243 - 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

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