DEMO9S08LIN Freescale, DEMO9S08LIN Datasheet - Page 77

• Manufacturer Part Number: DEMO9S08LIN
• Manufacturer: Freescale

Specifications of DEMO9S08LIN

• Lead Free Status / RoHS Status: Compliant

5.8.8
This high page register contains status and control bits to support the low voltage detect function, and to
enable the bandgap voltage reference for use by the ADC module. To configure the low voltage detect trip
voltage, see
1 Bit 1 is a reserved bit that must always be written to 0.
2 This bit can be written only one time after reset. Additional writes are ignored.
Freescale Semiconductor
LVDACK
Reset
LVDRE
LVDSE
LVDIE
BGBE
LVDE
Field
LVDF
7
6
5
4
3
2
0
W
R
System Power Management Status and Control 1 Register (SPMSC1)
LVDF
Table 5-14
Figure 5-10. System Power Management Status and Control 1 Register (SPMSC1)
Low-Voltage Detect Flag — Provided LVDE = 1, this read-only status bit indicates a low-voltage detect event.
Low-Voltage Detect Acknowledge — This write-only bit is used to acknowledge low voltage detection errors
(write 1 to clear LVDF). Reads always return 0.
Low-Voltage Detect Interrupt Enable — This read/write bit enables hardware interrupt requests for LVDF.
0 Hardware interrupt disabled (use polling).
1 Request a hardware interrupt when LVDF = 1.
Low-Voltage Detect Reset Enable — This read/write bit enables LVDF events to generate a hardware reset
(provided LVDE = 1).
0 LVDF does not generate hardware resets.
1 Force an MCU reset when LVDF = 1.
Low-Voltage Detect Stop Enable — Provided LVDE = 1, this read/write bit determines whether the low-voltage
detect function operates when the MCU is in stop mode.
0 Low-voltage detect disabled during stop mode.
1 Low-voltage detect enabled during stop mode.
Low-Voltage Detect Enable — This read/write bit enables low-voltage detect logic and qualifies the operation
of other bits in this register.
0 LVD logic disabled.
1 LVD logic enabled.
Bandgap Buffer Enable — This bit enables an internal buffer for the bandgap voltage reference for use by the
ADC module on one of its internal channels or the ACMP.
0 Bandgap buffer disabled.
1 Bandgap buffer enabled.
0
7
= Unimplemented or Reserved
LVDACK
for the LVDV bit description in SPMSC3.
0
0
6
MC9S08LC60 Series Data Sheet: Technical Data, Rev. 4
Table 5-12. SPMSC1 Field Descriptions
LVDIE
0
5
LVDRE
1
4
2
Description
LVDSE
Chapter 5 Resets, Interrupts, and System Configuration
3
1
LVDE
1
2
(2)
1
(1)
0
0
BGBE
0
0
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