MC33912BAC Freescale Semiconductor, MC33912BAC Datasheet - Page 86

• Manufacturer Part Number: MC33912BAC
• Description: IC SYSTEM BASIS CHIP 32LQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC33912BAC

• Applications: System Basis Chip
• Current - Supply: 4.5mA
• Voltage - Supply: 5.5 V ~ 27 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

High Side Control Register - HSCR
Writing to this register returns the High Side Status Register
(HSSR).
PWMHSx - PWM Input Control Enable.
to control the respective high side switch. The corresponding
high side switch must be enabled (HSx bit).
HSx - HSx Switch Control.
high side switch.
High Side Status Register - HSSR
and is also returned when writing to the HSCR.
High Side Thermal Shutdown
setting all HSxOP and HSxCL bits simultaneously.
HSxOP - High Side Switch Open-Load Detection
conducting current below a certain threshold indicating
possible load disconnection.
HSxCL - High Side Current Limitation
switch is operating in current limitation mode.
86
33912
FUNCTIONAL DEVICE OPERATIONS
LOGIC COMMANDS AND REGISTERS
Table 49. High Side Control Register - $6
Condition
This register controls the operation of the high side drivers.
This write-only bit enables/disables the PWMIN input pin
1 = PWMIN input controls HSx output.
0 = HSx is controlled only by SPI.
This write-only bit enables/disables the corresponding
1 = HSx switch on.
0 = HSx switch off.
This register returns the status of the high side switches
A thermal shutdown of the high side drivers is indicated by
This read-only bit signals that the high side switches are
1 = HSx Open Load detected (or thermal shutdown)
0 = Normal
This read-only bit indicates that the respective high side
1 = HSx in current limitation (or thermal shutdown)
0 = Normal
Reset
Reset
Value
Write
Table 50. High Side Status Register - $6/$7
Read
PWMHS2
C3
0
HS2OP
POR
S3
PWMHS1
C2
0
HS2CL
S2
POR, Reset mode, ext_reset, HSx
over-temp or (VSOV & HVSE)
HS2
HS1OP
C1
0
S1
HS1CL
S0
HS1
C0
0
Low Side Control Register - LSCR
Writing the Low Side Control Register (LSCR) will also return
the Low Side Status Register (LSSR).
PWMLx - PWM input control enable.
to control the respective low side switch. The corresponding
low side switch must be enabled (LSx bit).
LSx - LSx switch control.
side switch.
Low Side Status Register - LSSR
and is also returned when writing to the LSCR.
Low Side Thermal Shutdown
setting all LSxOP and LSxCL bits simultaneously.
LSxOP - Low Side Switch Open-Load Detection
conducting current below a certain threshold indicating
possible load disconnection.
LSxCL - Low Side Current Limitation
switch is operating in current limitation mode.
Table 51. Low Side Control Register - $8
Condition
This register controls the operation of the low side drivers.
This write-only bit enables/disables the PWMIN input pin
1 = PWMIN input controls LSx.
0 = LSx is controlled only by SPI.
This write-only bit enables/disables the corresponding low
1 = LSx switch on.
0 = LSx switch off.
This register returns the status of the low side switches
A thermal shutdown of the low side drivers is indicated by
This read-only bit signals that the low side switches are
1 = LSx Open Load detected (or thermal shutdown)
0 = Normal
This read-only bit indicates that the respective low side
1 = LSx in current limitation (or thermal shutdown)
0 = Normal
Reset
Value
Reset
Write
Table 52. Low Side Status Register - $8/$9
Read
PWMLS2
C3
0
LS2OP
POR
C3
PWMLS1
Analog Integrated Circuit Device Data
C2
0
LS2CL
C2
POR, Reset mode, ext_reset, LSx
over-temp or (VSOV & HVSE)
Freescale Semiconductor
LS2
LS1OP
C1
0
C1
LS1CL
C0
LS1
C0
0