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30.3.2 Low Power Timer Prescale Register (LPTMRx_PSR)
Address: Base a 4h offset
Bit
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
R
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
LPTMRx_PSR field descriptions
Field
Description
31–7
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
6–3
PRESCALE
Prescale Value
Configures the size of the Prescaler in Time Counter mode or width of the glitch filter in Pulse Counter
mode. PRESCALE must be altered only when the LPTMR is disabled.
0000
Prescaler divides the prescaler clock by 2; glitch filter does not support this configuration.
0001
Prescaler divides the prescaler clock by 4; glitch filter recognizes change on input pin after 2 rising
clock edges.
0010
Prescaler divides the prescaler clock by 8; glitch filter recognizes change on input pin after 4 rising
clock edges.
0011
Prescaler divides the prescaler clock by 16; glitch filter recognizes change on input pin after 8
rising clock edges.
0100
Prescaler divides the prescaler clock by 32; glitch filter recognizes change on input pin after 16
rising clock edges.
0101
Prescaler divides the prescaler clock by 64; glitch filter recognizes change on input pin after 32
rising clock edges.
0110
Prescaler divides the prescaler clock by 128; glitch filter recognizes change on input pin after 64
rising clock edges.
0111
Prescaler divides the prescaler clock by 256; glitch filter recognizes change on input pin after 128
rising clock edges.
1000
Prescaler divides the prescaler clock by 512; glitch filter recognizes change on input pin after 256
rising clock edges.
1001
Prescaler divides the prescaler clock by 1024; glitch filter recognizes change on input pin after 512
rising clock edges.
1010
Prescaler divides the prescaler clock by 2048; glitch filter recognizes change on input pin after
1024 rising clock edges.
1011
Prescaler divides the prescaler clock by 4096; glitch filter recognizes change on input pin after
2048 rising clock edges.
1100
Prescaler divides the prescaler clock by 8192; glitch filter recognizes change on input pin after
4096 rising clock edges.
1101
Prescaler divides the prescaler clock by 16,384; glitch filter recognizes change on input pin after
8192 rising clock edges.
Table continues on the next page...
Chapter 30 Low-Power Timer (LPTMR)
K32 L2A Reference Manual, Rev. 2, 01/2020
NXP Semiconductors
799
Содержание K32 L2A Series
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