MC33389CDW Freescale, MC33389CDW Datasheet - Page 38

• Manufacturer Part Number: MC33389CDW
• Manufacturer: Freescale

Specifications of MC33389CDW

• Number Of Transceivers: 1
• Power Down Mode: Sleep/Standby
• Operating Supply Voltage (max): 27V
• Operating Supply Voltage (typ): 9/12/15/18/24V
• Operating Supply Voltage (min): 5.5V
• Package Type: SOIC W
• Supply Current: 7mA
• Operating Temperature (max): 125C
• Operating Temperature (min): -40C
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 28
• Lead Free Status / RoHS Status: Not Compliant

Table 32. WUISR Bit Definition
Table 33. Wake-Up Input Real Time Information (WUIRTI)
contain the real time logic value coming from the wake-up inputs (0 means input below threshold, 1 means input above threshold.
Typical threshold is 3.5 V).
Table 34. Over Temperature Status Register (OTSR)
Table 35. Transceiver Error Status Register for CANH (TESRH)
38
33389
FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
This register reads back the over temperature status for the V1 and V2 regulators. It is used to turn V2 ON after a V2 over tem-
perature shutdown occurred in the Write mode.
OTV1: 1 = V1 over temperature shutdown, 0 = V1 no over temperature
OTV2: 1 = V2 over temperature shutdown, 0 = V2 no over temperature
OPWM1: 1 = V2 over temperature pre-warning, 0 = V2 normal temperature
OPWV2: 1 = V2 over temperature pre-warning, 0 = V2 normal temperature
power-ON reset, all bits are set to 0.
Address
Address
Address
WUIRTI
TESRH
RESET
This register reports the real time information on the state; (High or Low) of the L0, L1, and L2 inputs. The bits WUIRT1 2:0
RESET
RESET
This register reports the CANH failure status.
OTSR
In case of a wake-up event, the appropriate bit is set to 1. The bits will be reset by a Read operation of the register. After
$011
$012
$014
In case of V1 or V2 over temperature, the appropriate voltage regulators are switched OFF automatically, and the over temperature
flags are set (latched). The flags can be reset by a Read operation of the register OTSR. Once V2 is switched OFF because of over
temperature (OTV2 = 1 ) it can only be switched ON again by forcing OTV2C = 0 by a Write operation.
The V1 and V2 pre-warning flags are set as long as the first over temperature exists. The flags disappear, when the temperature is
below the threshold. An over temperature of the V2 power supply will also switch OFF V3. After a power-ON reset, all bits of the reg-
ister are set to 0.
WUISR2
0
x
x
1
W
W
W
R
R
R
Bit 7
Bit 7
Bit 7
—
—
—
WUISR1
Bit 6
Bit 6
Bit 6
—
0
x
1
x
—
—
Bit 5
Bit 5
Bit 5
—
—
—
WUISR0
Bit 4
Bit 4
Bit 4
—
—
0
1
—
x
x
OPWV2
TESRH3
Bit 3
Bit 3
Bit 3
—
0
0
Analog Integrated Circuit Device Data
WUIRTI2
OPWV1
TESRH2
No Event on Wake-Up Inputs
Bit 2
Bit 2
Bit 2
0
0
0
Description
Event on L0
Event on L1
Event on L2
Freescale Semiconductor
WUIRTI1
TESRH1
OTV2C
OPTV2
Bit 1
Bit 1
Bit 1
0
0
0
WUIRTI0
TESRH0
OTV1
Bit 0
Bit 0
Bit 0
0
0
0