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31.4 Memory map and register definition
LPTMR memory map
Absolute
address
(hex)
Register name
Width
(in bits)
Access Reset value
Section/
page
4004_0000 Low Power Timer Control Status Register (LPTMR0_CSR)
32
R/W
0000_0000h
4004_0004 Low Power Timer Prescale Register (LPTMR0_PSR)
32
R/W
0000_0000h
4004_0008 Low Power Timer Compare Register (LPTMR0_CMR)
32
R/W
0000_0000h
4004_000C Low Power Timer Counter Register (LPTMR0_CNR)
32
R/W
0000_0000h
31.4.1 Low Power Timer Control Status Register (LPTMRx_CSR)
Address: 4004_0000h base + 0h offset = 4004_0000h
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_CSR field descriptions
Field
Description
31–8
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
7
TCF
Timer Compare Flag
TCF is set when the LPTMR is enabled and the CNR equals the CMR and increments. TCF is cleared
when the LPTMR is disabled or a logic 1 is written to it.
0
The value of CNR is not equal to CMR and increments.
1
The value of CNR is equal to CMR and increments.
6
TIE
Timer Interrupt Enable
When TIE is set, the LPTMR Interrupt is generated whenever TCF is also set.
0
Timer interrupt disabled.
1
Timer interrupt enabled.
5–4
TPS
Timer Pin Select
Table continues on the next page...
Memory map and register definition
KL27 Sub-Family Reference Manual , Rev. 5, 01/2016
504
Freescale Semiconductor, Inc.