S9S08QD4CSC View Datasheet(PDF) - Freescale Semiconductor

Part Name

Description

Manufacturer

S9S08QD4CSC

8-BIT HCS08 Microcontrollers

Freescale Semiconductor 

Chapter 5 Resets, Interrupts, and General System Control

Table 5-13. SPMSC2 Register Field Descriptions

Field

Description

7

LVWF

6

LVWACK

5

LVDV

4

LVWV

3

PPDF

2

PPDACK

0

PPDC

Low-Voltage Warning Flag — The LVWF bit indicates the low voltage warning status.

0 Low voltage warning not preset.

1 Low voltage warning is present or was present.

Low-Voltage Warning Acknowledge — The LVWACK bit is the low-voltage warning acknowledge.

Writing a 1 to LVWACK clears LVWF to a 0 if a low voltage warning is not present.

Low-Voltage Detect Voltage Select — The LVDV bit selects the LVD trip point voltage (VLVD).

0 Low trip point selected (VLVD = VLVDL).

1 High trip point selected (VLVD = VLVDH).

Low-Voltage Warning Voltage Select — The LVWV bit selects the LVW trip point voltage (VLVW).

0 Low trip point selected (VLVW = VLVWL).

1 High trip point selected (VLVW = VLVWH).

Partial Power Down Flag — The PPDF bit indicates that the MCU has exited the stop2 mode.

0 Not stop2 mode recovery.

1 Stop2 mode recovery.

Partial Power Down Acknowledge — Writing a 1 to PPDACK clears the PPDF bit.

Partial Power Down Control — The write-once PPDC bit controls whether stop2 or stop3 mode is selected.

0 Stop3 mode enabled.

1 Stop2, partial power down, mode enabled.

MC9S08QD4 Series MCU Data Sheet, Rev. 6

66

Freescale Semiconductor

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