MC9S08JM16CGTE FREESCALE [Freescale Semiconductor, Inc], MC9S08JM16CGTE Datasheet - Page 75

• Manufacturer Part Number: MC9S08JM16CGTE
• Description: Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

5.7.8
This register is used to report the status of the low-voltage warning function, and to configure the stop
mode behavior of the MCU. This register must be written during the user’s reset initialization program to
set the desired controls even if the desired settings are the same as the reset settings.
Freescale Semiconductor
Any other Reset:
1
Power-on Reset:
This bit can be written only one time after reset. Additional writes are ignored.
PPDACK
PPDC
LVWV
PPDF
LVD Reset:
LVDV
Field
5
4
3
2
0
System Power Management Status and Control 2 Register
(SPMSC2)
Figure 5-10. System Power Management Status and Control 2 Register (SPMSC2)
W
R
Low-Voltage Detect Voltage Select — This write-once bit selects the low-voltage detect (LVD) trip point
setting. It also selects the warning voltage range. See
Low-Voltage Warning Voltage Select — This bit selects the low-voltage warning (LVW) trip point
voltage.See
Partial Power Down Flag — This read-only status bit indicates that the MCU has recovered from stop2
mode.
0 MCU has not recovered from stop2 mode.
1 MCU recovered from stop2 mode.
Partial Power Down Acknowledge — Writing a 1 to PPDACK clears the PPDF bit.
Partial Power Down Control — This write-once bit controls whether stop2 or stop3 mode is selected.
0 Stop3 mode enabled.
1 Stop2, partial power down, mode enabled.
1
See Electrical Characteristics appendix for minimum and maximum values.
0
0
0
0
7
LVDV:LVWV
Table
0:0
0:1
1:0
1:1
= Unimplemented or Reserved
Table 5-12. LVD and LVW Trip Point Typical Values
Table 5-11. SPMSC2 Register Field Descriptions
5-12.
0
0
0
0
6
MC9S08JM16 Series Data Sheet, Rev. 2
LVDV
0
u
u
5
LVW Trip Point
V
V
V
V
LVW0
LVW1
LVW2
LVW3
= 2.74 V
= 2.92 V
= 4.3 V
= 4.6 V
LVWV
4
0
u
u
Description
Table
Chapter 5 Resets, Interrupts, and System Configuration
PPDF
0
0
0
3
5-12.
LVD Trip Point
V
V
LVD0
LVD1
u = Unaffected by reset
PPDACK
= 2.56 V
= 4.0 V
0
0
0
0
2
1
0
0
0
0
1
PPDC
0
0
0
0
1
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