NXP Semiconductors MC9S12VRP64, Owner Reference Manual

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Supply Voltage Sensor - (BATSV2)
MC9S12VRP Family Reference Manual Rev. 1.3
NXP Semiconductors 431
17.3.2.2
BATS Module Status Register (BATSR
)
Figure 17-5. BATS Voltage Sensing
Module Base + 0x0001 Access: User read only
1
1
Read: Anytime
Write: Never
7 6 5 4 3 2 1 0
R 0 0 0 0 0 0 BVHC BVLC
W
Reset 0 0 0 0 0 0 0 0
= Unimplemented
Figure 17-4. BATS Module Status Register (BATSR)
Table 17-3. BATSR - Register Field Descriptions
Field Description
1
BVHC
BATS Voltage Sense High Condition Bit — This status bit indicates that a high voltage at VSENSE or VSUP,
depending on selection, is present.
0 V
measured

V
HBI_A
(rising edge) or V
measured

V
HBI_D
(falling edge)
1 V
measured

V
HBI_A
(rising edge) or V
measured

V
HBI_D
(falling edge)
0
BVLC
BATS Voltage Sense Low Condition Bit — This status bit indicates that a low voltage at VSENSE or VSUP,
depending on selection, is present.
0 V
measured

V
LBI_A
(falling edge) or V
measured

V
LBI_D
(rising edge)
1 V
measured

V
LBI_A
(falling edge) or V
measured

V
LBI_D
(rising edge)
t
V
V
LBI_A
V
LBI_D
V
HBI_A
V
HBI_D