MC68HC08AZ16 Datasheet, PDF (261/527 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Timer Interface Module A (TIMA)
I/O registers
The following I/O registers control and monitor operation of the TIMA:
• TIMA status and control register (TASC)
• TIMA control registers (TACNTH:TACNTL)
• TIMA counter modulo registers (TAMODH:TAMODL)
• TIMA channel status and control registers (TASC0, TASC1,
TASC2, and TASC3)
• TIMA channel registers (TACH0H:TACH0L, TACH1H:TACH1L,
TACH2H:TACH2L, and TACH3H:TACH3L)
TIMA status and
control register
(TASC)
The TIMA status and control register does the following:
• Enables TIMA overflow interrupts
• Flags TIMA overflows
• Stops the TIMA counter
• Resets the TIMA counter
• Prescales the TIMA counter clock
Bit 7
6
5
4
3
2
1
Bit 0
TASC ^{Read: TOF}
$0020 _Write:
0
0
TOIE TSTOP
TRST
0
PS2
PS1
PS0
Reset: 0
0
1
0
0
0
0
0
= Unimplemented
Figure 3. TIMA status and control register (TASC)
MC68HC08AZ32
260
Timer Interface Module A (TIMA)
16-tima
MOTOROLA