mc33984 Freescale Semiconductor, Inc, mc33984 Datasheet - Page 26

• Manufacturer Part Number: mc33984
• Description: Dual Intelligent High-current Self-protected Silicon High-side Switch 4.0 M
• Manufacturer: Freescale Semiconductor, Inc

Table 16. Fault Register
Previous Address SOA[2:0] = 011
the overcurrent fault blanking time, illustrated in
OD2 reports if the overcurrent detection timeout feature is
active. OD3 reports if the open load circuitry is active.
Previous Address SOA[2:0] =100
DICR.
26
33984
FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
OD7 (s) = Selection of output: Logic [0] = HS0, Logic [1] = HS1.
OD6 (OTF) = Overtemperature Flag.
OD5 (OCHFs) = Overcurrent High Flag. (This fault is latched.)
OD4 (OCLFs) = Overcurrent Low Flag. (This fault is latched.)
OD3 (OLFs) = Open Load Flag.
OD2 (UVF) = Undervoltage Flag. (This fault is latched or not latched.)
OD1 (OVF) = Overvoltage Flag.
OD0 (FAULTs) = This flag reports a fault and is reset by a read
operation.
Note The
a new Switch ON command (via SPI or direct input IN).
OD7
Data returned in bits OD1 and OD0 are current values for
The returned data contain the programmed values in the
s
OD6
OTF
FS
pin reports a fault. For latched faults, this pin is reset by
OCHFs OCLFs
OD5
OD4
OLFs
OD3
OD2
UVF
Table
OD1
OVF FAULTs
12. Bit
OD0
Previous Address SOA[2:0] = 101
Previous Address SOA[2:0] = 110
Table 17. Pin Register
Previous Address SOA[2:0] =111
received, so bits OD2:OD0 are null, or 000.
• SOA3 = 0. The returned data contain the programmed
• SOA3 = 1. The returned data contain the programmed
• SOA3 = 0. OD3:OD0 return the state of the IN1, IN0,
• SOA3 = 1. The returned data contain the programmed
Null Data. No previous register Read Back command
IN1 Pin
OD3
values in the OSDR. Bit OD3 (FSM_HS0) reflects the
state of the output HS0 in the Fail-Safe mode after a
watchdog timeout occurs.
values in the WDR. Bit OD2 (WDTO) reflects the status
of the watchdog circuitry. If WDTO bit is Logic [1], the
watchdog has timed out and the device is in Fail-Safe
mode. If WDTO is Logic [0], the device is in Normal
mode (assuming the device is powered and not in Sleep
mode), with the watchdog either enabled or disabled.
Bit OD3 (FSM_HS1) reflects the state of the output HS1
in the Fail-Safe mode after a watchdog timeout occurs.
FSI, and WAKE pins, respectively
values in the UOVR. Bit OD1 reflects the state of the
undervoltage protection and bit OD0 reflects the state of
the overvoltage protection. Refer to
IN0 Pin
OD2
Analog Integrated Circuit Device Data
FSI Pin
OD1
Freescale Semiconductor
(Table
Table
17).
15).
WAKE Pin
OD0