MC68HC05L28 Datasheet, PDF (70/156 Pages) Motorola, Inc – Flexible general-purpose microcomputer

Internal
processor clock
Internal
reset
Internal
timer clocks
 _T00


T01
 ^T10
 ^T11
16-bit
counter
$FFFC
$FFFD
$FFFE
$FFFF
External reset
or end of POR
6
Note:
The counter and timer control registers are the only ones affected by
power-on or external reset.
Figure 6-2 Timer state timing diagram for reset
Internal
processor clock
Internal
timer clocks
 _T00


T01
 ^T10
 ^T11
16-bit
counter
$F123
$F124
$F125
$F126
Input
edge
Internal
capture latch
Input capture
register
$????
$F124
Input capture
flag
Note:
If the input edge occurs in the shaded area from one timer state T10 to the next timer state T10, then
the input capture flag will be set during the next T11 state.
Figure 6-3 Timer state timing diagram for input capture
MOTOROLA
6-14
16-BIT PROGRAMMABLE TIMER
TPG
MC68HC05L28