MC68HC05B6_13 Datasheet, PDF (62/302 Pages) Freescale Semiconductor, Inc – Microcontrollers

5.2
Timer control and status
The various functions of the timer are monitored and controlled using the timer control and status
registers described below.
5.2.1 Timer control register (TCR)
The timer control register ($0012) is used to enable the input captures (ICIE), output compares
(OCIE), and timer overflow (TOIE) functions as well as forcing output compares (FOLV1 and
FOLV2), selecting input edge sensitivity (IEDG1) and levels of output polarity (OLV1 and OLV2).
5
Address bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
State
on reset
Timer control (TCR)
$0012 ICIE OCIE TOIE FOLV2 FOLV1 OLV2 IEDG1 OLVL1 0000 00u0
ICIE — Input captures interrupt enable
If this bit is set, a timer interrupt is enabled whenever the ICF1 or ICF2 status flag (in the timer
status register) is set.
1 (set) – Interrupt enabled.
0 (clear) – Interrupt disabled.
OCIE — Output compares interrupt enable
If this bit is set, a timer interrupt is enabled whenever the OCF1 or OCF2 status flag (in the timer
status register) is set.
1 (set) – Interrupt enabled.
0 (clear) – Interrupt disabled.
TOIE — Timer overflow interrupt enable
If this bit is set, a timer interrupt is enabled whenever the TOF status flag (in the timer status
register) is set.
1 (set) – Interrupt enabled.
0 (clear) – Interrupt disabled.
Freescale
5-4
PROGRAMMABLE TIMER
MC68HC05B6
Rev. 4.1