DEMO9S08LC60 Freescale Semiconductor, DEMO9S08LC60 Datasheet - Page 203
DEMO9S08LC60
Manufacturer Part Number
DEMO9S08LC60
Description
BOARD DEMO FOR 9S08LC60
Manufacturer
Freescale Semiconductor
Type
MCUr
Datasheets
1.DEMO9S08LC60.pdf
(360 pages)
2.DEMO9S08LC60.pdf
(32 pages)
3.DEMO9S08LC60.pdf
(2 pages)
Specifications of DEMO9S08LC60
Contents
Evaluation Board
Processor To Be Evaluated
MC9S08LC60
Interface Type
RS-232, USB
Silicon Manufacturer
Freescale
Core Architecture
HCS08
Core Sub-architecture
HCS08
Silicon Core Number
MC9S08
Silicon Family Name
S08LC
Rohs Compliant
Yes
For Use With/related Products
MC9S08LC60
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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11.3.2
The two read-only TPM counter registers contain the high and low bytes of the value in the TPM counter.
Reading either byte (TPMxCNTH or TPMxCNTL) latches the contents of both bytes into a buffer where
they remain latched until the other byte is read. This allows coherent 16-bit reads in either order. The
coherency mechanism is automatically restarted by an MCU reset, a write of any value to TPMxCNTH or
TPMxCNTL, or any write to the timer status/control register (TPMxSC).
Reset clears the TPM counter registers.
Freescale Semiconductor
Reset
W
R
Bit 15
Timer x Counter Registers (TPMxCNTH:TPMxCNTL)
1
2
0
7
The maximum frequency that is allowed as an external clock is one-fourth of the bus
frequency.
If the external clock input is shared with channel n and is selected as the TPM clock source,
the corresponding ELSnB:ELSnA control bits should be set to 0:0 so channel n does not try
to use the same pin for a conflicting function.
CLKSB:CLKSA
PS2:PS1:PS0
0:0
0:1
1:0
1:1
Figure 11-4. Timer x Counter Register High (TPMxCNTH)
14
0
6
0:0:0
0:0:1
0:1:0
0:1:1
1:0:0
1:0:1
1:1:0
1:1:1
MC9S08LC60 Series Data Sheet: Technical Data, Rev. 4
Table 11-2. TPM Clock Source Selection
Table 11-3. Prescale Divisor Selection
Any write to TPMxCNTH clears the 16-bit counter.
13
0
5
TPM Clock Source to Prescaler Input
No clock selected (TPMx disabled)
12
0
4
External source (TPMxCLK)
Fixed system clock (XCLK)
Bus rate clock (BUSCLK)
TPM Clock Source Divided-By
11
3
0
Chapter 11 Timer/Pulse-Width Modulator (S08TPMV2)
128
16
32
64
1
2
4
8
10
0
1,2
2
9
0
1
Bit 8
0
0
203
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