MC68HC711G5 MOTOROLA [Motorola, Inc], MC68HC711G5 Datasheet - Page 90

• Manufacturer Part Number: MC68HC711G5
• Description: High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcontroller
• Manufacturer: MOTOROLA [Motorola, Inc]

I4/O5 — Configure TO5I4 register for input capture or output compare
RTR2, RTR1, RTR0 — RTI Interrupt Rate
MOTOROLA
6-20
RTR2 RTR1 RTR0
1
1
0
0
0
0
0 – Output compare 5 function enabled (no IC4).
1 – Input capture 4 function enabled (no OC5).
These bits select one of six rates for the real time periodic interrupt circuit (see
Table 6-1). Reset clears these bits and after reset a full RTI period elapses before
the first RTI interrupt occurs.
1
1
0
0
1
1
0
1
0
1
0
1
Divide
E By
2
2
2
2
2
2
E =
11
12
13
14
15
16
Table 6-1. Real Time Interrupt Rates
15.62 ms
31.25 ms
XTAL =
0.98 ms
1.95 ms
3.91 ms
7.81 ms
2.1MHz
PROGRAMMABLE TIMER
2
23
16.38 ms
32.77 ms
8.0MHz
1.02 ms
2.05 ms
4.10 ms
8.19 ms
XTAL =
2.0MHz
4.9152MHz
1.2288MHz
13.33 ms
26.67 ms
53.33 ms
XTAL =
1.67 ms
3.33 ms
6.67 ms
16.38 ms
32.77 ms
65.54 ms
XTAL =
2.05 ms
4.10 ms
8.19 ms
4.0MHz
1.0MHz
MC68HC11G5
3.6864MHz
17.78 ms
35.56 ms
71.11 ms
921.6kHz
XTAL =
2.22 ms
4.44 ms
8.89 ms