LFEBS12UB Freescale Semiconductor, LFEBS12UB Datasheet - Page 811
LFEBS12UB
Manufacturer Part Number
LFEBS12UB
Description
KIT STUDENT LEARNING S12 DG128
Manufacturer
Freescale Semiconductor
Specifications of LFEBS12UB
Architecture
8/16-bit
Code Gen Tools Included
Code Warrior
Silicon Manufacturer
Freescale
Core Architecture
S12
Core Sub-architecture
S12
Silicon Core Number
MC9S12
Silicon Family Name
S12D
Kit Contents
HCS12 DG128 Learning Kit
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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The Prescaler can be calculated as follows depending on logical value of the PTPS[7:0] and PRNT bit:
PRNT = 1 : Prescaler = PTPS[7:0] + 1
22.4
This section provides a complete functional description of the timer TIM16B8CV2 block. Please refer to
the detailed timer block diagram in
Freescale Semiconductor
Because of an order from the United States International Trade Commission, BGA-packaged product lines and partnumbers
PTPS[7:0]
PTPS7
indicated here currently are not available from Freescale for import or sale in the United States prior to September 2010
Field
7:0
0
0
0
0
0
0
0
0
0
0
0
0
1
Functional Description
Precision Timer Prescaler Select Bits — These eight bits specify the division rate of the main Timer prescaler.
These are effective only when the PRNT bit of TSCR1 is set to 1.
in this case.
The newly selected prescale factor will not take effect until the next synchronized edge where all prescale counter
stages equal zero.
PTPS6
Table 22-24. Precision Timer Prescaler Selection Examples when PRNT = 1
0
0
0
0
0
0
0
0
0
0
0
1
1
PTPS5
0
0
0
0
0
0
0
0
0
0
1
1
1
MC9S12XE-Family Reference Manual Rev. 1.23
Table 22-23. PTPSR Field Descriptions
Figure 22-30
PTPS4
0
0
0
0
0
0
0
0
0
1
1
1
1
PTPS3
as necessary.
0
0
0
0
0
0
0
0
1
1
1
1
1
Description
Chapter 22 Timer Module (TIM16B8CV2) Block Description
PTPS2
0
0
0
0
1
1
1
1
1
1
1
1
1
Table 22-24
PTPS1
0
0
1
1
0
0
1
1
1
1
1
1
1
shows some selection examples
PTPS0
0
1
0
1
0
1
0
1
1
1
1
1
1
Prescale
Factor
128
256
16
32
64
1
2
3
4
5
6
7
8
811
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