SAK-C505L Infineon Technologies AG, SAK-C505L Datasheet - Page 31

• Manufacturer Part Number: SAK-C505L
• Description: 8-bit CMOS Microcontroller
• Manufacturer: Infineon Technologies AG

Timer / Counter 0 and 1
Timer/Counter 0 and 1 can be used in four operating modes as listed in Table 6:
Table 6
Timer/Counter 0 and 1 Operating Modes
Mode
0
1
2
3
In the “timer” function (C/T = ‘0’) the register is incremented every machine cycle. Therefore the
count rate is
In the “counter” function the register is incremented in response to a 1-to-0 transition at its
corresponding external input pin (P3.4/T0, P3.5/T1). Since it takes two machine cycles to detect a
falling edge the max. count rate is
programmed to function as a gate to facilitate pulse width measurements. Figure 11 illustrates the
input clock logic.
Figure 11
Timer/Counter 0 and 1 Input Clock Logic
Data Sheet
Description
8-bit timer/counter with a divide-by-32
prescaler
16-bit timer/counter
8-bit timer/counter with 8-bit autoreload
Timer/counter 0 used as one
8-bit timer/counter and one 8-bit timer
Timer 1 stops
f
OSC
P3.4/T0
P3.5/T1
Gate
(TMOD)
P3.2/INT0
P3.3/INT1
/6.
=1
OSC
f
OSC
/12. External inputs INT0 and INT1 (P3.2, P3.3) can be
÷
_
<
6
1
TR0
TR1
29
0
0
1
1
C/T = 0
C/T = 1
M1
TMOD
&
0
1
0
1
M0
Control
internal
f
f
OSC
OSC
/(6
/6
f
Timer 0/1
Input Clock
OSC
32)
Input Clock
MCS03117
/6
external (max)
f
f
OSC
OSC
/(12
/12
C505L
32)
06.99