42.3 Modes of operation
The LPIT module supports the chip modes described in the following table.
Table 42-2. Chip modes supported by the LPIT module
Chip mode
LPIT Operation
Run
Normal operation
Stop/Wait
Can continue operating provided the Doze Enable bit (MCR[DOZE_EN]) is set and
the LPIT is using an external or internal clock source which remains operating
during stop/wait modes.
Debug
Can continue operating provided the Debug Enable bit (MCR[DBG_EN]) is set.
Memory Map and Registers
The memory map comprises of 32-bit aligned registers which can be accessed via 8-bit,
16-bit, or 32-bit accesses. Write access to reserved locations will generate a transfer error.
Read access to reserved locations will also generate a transfer error and the read data bus
will show all 0s. The Memory Map and complete module is in Big Endian format.
The module will not check for correctness of programmed values in the registers and
software must ensure that correct values are being written.
LPIT memory map
Absolute
address
(hex)
Register name
Width
(in bits)
Access Reset value
Section/
page
4003_7000 Version ID Register (LPIT0_VERID)
32
R
0100_0000h
4003_7004 Parameter Register (LPIT0_PARAM)
32
R
4003_7008 Module Control Register (LPIT0_MCR)
32
R/W
0000_0000h
4003_700C Module Status Register (LPIT0_MSR)
32
w1c
0000_0000h
4003_7010 Module Interrupt Enable Register (LPIT0_MIER)
32
R/W
0000_0000h
4003_7014 Set Timer Enable Register (LPIT0_SETTEN)
32
R/W
0000_0000h
4003_7018 Clear Timer Enable Register (LPIT0_CLRTEN)
32
W
(always
reads 0)
0000_0000h
4003_7020 Timer Value Register (LPIT0_TVAL0)
32
R/W
0000_0000h
4003_7024 Current Timer Value (LPIT0_CVAL0)
32
R
FFFF_FFFFh
Table continues on the next page...
42.4
Chapter 42 Low-power Periodic Interrupt Timer (LPIT)
Kinetis KE1xF Sub-Family Reference Manual, Rev. 4, 06/2019
NXP Semiconductors
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