MM908E622ACDWBR2 FREESCALE [Freescale Semiconductor, Inc], MM908E622ACDWBR2 Datasheet - Page 33

• 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]

A0 Current Source
able to read in switches, NTC, etc., without the need of an
additional supply line for the sensor. The overall enable of
this feature is done by setting the PSON bit in the System
Control register. In addition, the pin has to be selected with
the SS[3:0] bits. The current source can be enabled with the
CSON Bit, and adjusted with the bits CSSEL[1:0].
selected (40, 120, 320 and 800µA). This function is halted
during STOP and SLEEP mode operations.
constant up to an output voltage of ~4.75V.
envisioned. On this pin, an accurate resistor can to be
Analog Integrated Circuit Device Data
Freescale Semiconductor
ADOUT
The pin A0 provides a switchable current source, to be
The CSSEL[1:0] bit’s four different current values can be
The current source is derived from the V
To calibrate the current sources an extra pin (A0CST) is
100%
I
A0
(U
A0
)
Source Selection Bits
Multiplexer
4.75
Analog
SSx
4
5
Figure 17. Analog Input and Multiplexer
DD
U
voltage and is
A0
Analog Port A0/A0CST
[V]
CSSEL
CSON
PSON
connected. Switching the current sources to this resistor
allows the user to measure the current, and use the
measured value for calculating the current on A0.
Analog Multiplexer / ADOUT Pin
Analog-to-digital converter of the MCU. To be able to have
different sources for the MCU with one single signal, an
analog multiplexer is integrated in the analog die. This
multiplexer has twelve different sources, which can be
selected with the SS[3:0] bits in the A0MUCTL register.
Half-bridge (HB1:HB4) Current Recopy
circuits on the low side FET of the half bridges. This sense
circuits offers a voltage proportional to the current through the
MOSFET. The resolution is depending on the CSA bit in the
A0 and Multiplexer control register (A0MUCTL).
High Side (HS1:HS3) Current Recopy
switches. These sense circuits offer a voltage proportional to
the current through the transistor.
Analog Input A0 and A0CST
multiplexer. It offers the possibility to read analog values from
the periphery.
The ADOUT pin is the analog output interface to the
The multiplexer is connected to the four current sense
The multiplexer is connected to the three high side
A0 and A0CST are directly connected to the analog
VDD
Selectable
Current
Source
SS[0:3]
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
A0CST
A0
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