mc68hc908ld64 Freescale Semiconductor, Inc, mc68hc908ld64 Datasheet - Page 163

• Manufacturer Part Number: mc68hc908ld64
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

11.10.2 TIM Counter Registers (TCNTH:TCNTL)
MC68HC908LD64
Freescale Semiconductor
—
Rev. 3.0
Address:
Address:
The two read-only TIM counter registers contain the high and low bytes
of the value in the TIM counter. Reading the high byte (TCNTH) latches
the contents of the low byte (TCNTL) into a buffer. Subsequent reads of
TCNTH do not affect the latched TCNTL value until TCNTL is read.
Reset clears the TIM counter registers. Setting the TIM reset bit (TRST)
also clears the TIM counter registers.
Reset:
Reset:
Read:
Read:
Write:
Write:
PS2
0
0
0
0
1
1
1
1
Figure 11-4. TIM Counter Registers (TCNTH:TCNTL)
$000C
$000D
Bit15
PS1
Bit 7
Bit 7
Bit7
0
0
1
1
0
0
1
1
0
0
Timer Interface Module (TIM)
PS0
TCNTH
TCNTL
= Unimplemented
0
1
0
1
0
1
0
1
Bit14
Bit6
6
0
6
0
Table 11-2. Prescaler Selection
Bit13
Bit5
5
0
5
0
Bit12
Bit4
4
0
4
0
Internal Bus Clock ÷ 1
Internal Bus Clock ÷ 2
Internal Bus Clock ÷ 4
Internal Bus Clock ÷ 8
Internal Bus Clock ÷ 16
Internal Bus Clock ÷ 32
Internal Bus Clock ÷ 64
TIM Clock Source
Not available
Bit11
Bit3
3
0
3
0
Timer Interface Module (TIM)
Bit10
Bit2
2
0
2
0
Bit9
Bit1
1
0
1
0
I/O Registers
Data Sheet
Bit 0
Bit 0
Bit8
Bit0
0
0
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