MC33989PEG Freescale Semiconductor, MC33989PEG Datasheet - Page 38

• Manufacturer Part Number: MC33989PEG
• Description: SBC-HS
• Manufacturer: Freescale Semiconductor

FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
Interrupt Register (INT)
Table 31. INT Register
Table 32. INT Control Bits
however, INT register content remains at 0000 (not bit set into the INT register).
the IOR and/or CAN register must be cleared (read register). Once this operation is done at IOR and CAN register the INT register
is updated.
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33989
1. Bit D2 = 1: INT source is HS1OT
2. Bit D2 = 0: INT source is V2LOW
This register allows masking or enabling the interrupt source. A read operation informs about the interrupt source.
When the mask bit is set, INT pin goes low if the appropriate condition occurs.
If HS1
HS1
Upon a wake-up condition from Stop mode due to over-current detection (I
The status bit of the INT register content is a copy of the IOR and CAN registers status content. To clear the INT register bit
Errors bits are latched in the CAN register and IOR.
Reset Condition
Reset Value
OT
$111B
OT
INT
and V2
HS1OT - V2LOW
- V2
Control Bit
V
V
DDTEMP
SUPLOW
CANF
LOW
LOW
interrupt is only selected (only bit D2 set in INT register), reading INT register bit D2 leads to two possibilities:
bits status are available in IOR.
W
R
Table 33. INT Status Bits
Status Bit
Mask Bit for CAN Failures
Mask Bit for V
Mask Bit for HS1 Over-temperature AND V2 Below 4.0 V
Mask Bit for V
V
V
HS1OT
SUPLOW
DDTEMP
CANF
VSUPLOW
VSUPLOW
POR, RST
D3
0
DD
SUP
CAN Failure
V
HS1 Over-temperature
V
Medium Temperature (Pre-warning)
DD
SUP
Below 6.1 V
Medium Temperature (pre-warning)
Below 6.1 V
HS1OT-V2LOW
POR, RST
HS1OT
Description
D2
0
Description
DD1SW-U1
or I
VDDTEMP
VDDTEMP
POR, RST
Analog Integrated Circuit Device Data
DD1S-WU2
D1
0
), an INT pulse is generated;
Freescale Semiconductor
POR, RST
CANF
CANF
D0
0