MM908E622ACDWBR2 FREESCALE [Freescale Semiconductor, Inc], MM908E622ACDWBR2 Datasheet - Page 42

• Manufacturer Part Number: MM908E622ACDWBR2
• Description: Integrated Quad Half-bridge, Triple High Side and EC Glass Driver with Embedded MCU and LIN for High End Mirror
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

High Side Current Recopy
current recopy feature. This sense source is internally
connected to a shunt resistor. The drop voltage is amplified
and switched to the Analog Multiplexer.
Switchable HVDD Outputs
for driving external circuitry which requires a 5V voltage. The
output is enabled with the PSON bit in the System Control
register and can be switched on / off with the HVDD_ON bit
in the High Side Out register. Low or high voltage conditions
(LVIF / HVIF) will have no influence on this circuitry.
HVDD Over-temperature Protection
conditions.
HVDD Over-current Protection
case the current reach the over-current limit, the output
current will be limited and the HVDDOCF over-current flag in
the System Status register is set.
High Side Out Register (HSOUT)
HVDD-ON — HVDD On Bit
the HVDDON bit.
HSxON — High Side on/off Bits
permanently. Reset clears the HSxON bits.
42
908E622
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
Reset
Read
Write
Each high side has an additional sense output to allow a
The HVDD pin is a switchable 5V output pin. It can be used
The output is protected against over-temperature
The HVDD output is protected against over-current. In
This read/write bit enables the HVDD output. Reset clears
These read/write bits turn on the High Side Fet’s
1 = HVDD enabled
0 = HVDD disabled
HVDD
Bit7
ON
0
Register Name and Address: HSOUT - $02
6
0
0
HS3P
WM
5
0
HS2P
WM
4
0
HS1P
WM
3
0
HS3O
2
N
0
HS2O
1
N
0
HS1O
Bit0
N
0
HSxPWM — High Side PWM on/off Bits
Side FETs. Reset clears the HSxPWM bits.
High Side Status Register (HSSTAT)
HSxOCF — High Side Overcurrent Flag Bit
the high side drivers x. Clear HSxOCF and enable the HS
Driver by writing a logic [1] to HSxOCF. Writing a logic [0] to
HSxOCF has no effect. Reset clears the HSxOCF bit.
HVDDOCF — HVDD Output Over-current Flag Bit
the HVDD pin. Clear HVDDOCF and enable the output by
writing a logic [1] to the HVDDOCF Flag. Writing a logic [0] to
HVDDOCF has no effect. Reset clears the HVDDOCF bit.
Electrochrome Circuitry
the EC glass on/off, and T2 controls the EC output voltage
given by the 6Bit DA Converter.
Reset
Read
Write
These read/write bits enable the PWM control of the High
This read/write flag is set by an over-current condition at
This read/write flag is set by an over-current condition at
The EC glass is controlled by two transistors. T1 switches
1 = High Side x is turned on
0 = High Side x is turned off
1 = High Side x is controlled by PWM input signal
0 = High Side x is not controlled by PWM input signal
1 = over-current condition on high side drivers has
0 = no over-current condition on high side drivers has
1 = over-current condition on VDD output has occurred
0 = no over-current condition on VDD output has
HVDD
OCF
Bit7
occurred
occurred
occurred
Register Name and Address: HSSTAT - $04
0
6
0
0
Analog Integrated Circuit Device Data
5
0
0
4
0
0
Freescale Semiconductor
3
0
0
HS3O
CF
2
0
HS2O
CF
1
0
HS1O
Bit0
CF
0