mc68hc05x4dw Freescale Semiconductor, Inc, mc68hc05x4dw Datasheet - Page 112

• Manufacturer Part Number: mc68hc05x4dw
• Description: Xc68hc705x4 Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Counter
Counter registers
16-Bit Programmable Timer
MC68HC05X4 Rev 1.0
Address:
Address:
The key element in the programmable timer is a 16-bit, free-running
counter, or counter register, preceded by a prescaler that divides the
internal processor clock by four. The prescaler gives the timer a
resolution of 2 s if the internal bus clock is 2MHz. The counter is
incremented during the low portion of the internal bus clock. Software
can read the counter at any time without affecting its value.
Reset:
Reset:
Freescale Semiconductor, Inc.
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Bit 15
Bit 7
1
1
Figure 2. Timer Counter High Register (TCH)
Figure 3. Timer Counter Low Register (TCL)
16-Bit Programmable Timer
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14
1
6
1
13
1
5
1
12
1
4
1
11
1
3
1
10
1
2
1
9
1
1
0
Bit 8
Bit 0
4-ptimer
1
0