NXP Semiconductors
UM11227
NTM88 family of tire pressure monitor sensors
UM11227 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved.
User manual Rev. 6 — 24 April 2020
168 / 205
10.23.3.3 PMC status and control 2 register (SPMSC2)
SPMCSC2 register contains status and control bits associated with the PMC power down
modes.
Note: User applications not enabling STOP1, i.e. not setting PDC to 1, will result in the
STOP4 mode if the application enables the STOP instruction, and subsequently executes
a STOP instruction.
Table 179. PMC status and control 2 register (SPMSC2) (address $180A)
Bit 7 6 5 4 3 2 1 0
R 0 0 0 PDF 0 0 0
W — — — — — PPDACK
PDC
—
Reset 0 0 0 U 0 0 0 0
POR ($00) 0 0 0 0 0 0 0 0
Table 180. SPMSC2 register field descriptions
Field Description
4
PDF
PDF – Power Down Recovery Flag
The PDF bit indicates that the PMC has exited the STOP1 mode. PDF is cleared by writing a 1 to PPDACK.
PDF defaults to 0 following an LVD reset or true POR. True POR is defined as removing and reapplying
power (i.e. both V
DD
and V
DDA
are removed) to the MCU.
0 = Not STOP1 exit; Result of power-on reset; Existing state retained from resets of low voltage detection,
external pin, COP, PWU, illegal opcode, illegal address, soft reset, and back-ground debugger.
1 = STOP1 exit.
2
PPDACK
PPDACK – Partial Power Down Acknowledge control
Writing a logic 1 to PPDACK clears the PDF bit.
0 = Read result; Write no effect; Result of Reset
1 = Write 1 to clear PDF for Power Down acknowledge.
1
PDC
PDC – Power Down Control
The PDC bit controls entry into the STOP1 mode.
0 = Power Down states are disabled; Result of Reset
1 = STOP1 mode enabled.
10.23.3.4 PMC status and control 3 register (PMCSC3)
PMCSC3 register contains status and control bits associated with the PMC Low Voltage
Warning (LVW) subsystem.
Table 181. PMC status and control 3 register (PMCSC3) (address $180C)
Bit 7 6 5 4 3 2 1 0
R LVWF 0 — 0 0
W — LVWACK
LVDV LVWV
— — —
—
Reset U U U U U U U U
POR ($00) 0 0 0 0 0 0 0 0
To Next Page
Loading...
Need help?
General