MM908E622ACDWBR2 FREESCALE [Freescale Semiconductor, Inc], MM908E622ACDWBR2 Datasheet - Page 43

• 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]

EC Open Load Detection
current source sources a typical 200μA on the EC pin, and
the voltage on the pin is measured. If the voltage is above the
typical 2.0V (typical 10K threshold), the ECOLF bit in the EC
Status and Control Register ECSCTL is set, indicating the
open load condition.
glass is disabled.
EC Short Circuit Protection
case of a short-circuit, the ECOCF in the EC Status and the
Control Register (ECSCTL) are set, and the EC circuitry is
disabled.
of a short-circuit, the ECOCF in the EC Status and the
Control Register (ECSCTL) are set, and the EC circuitry is
disabled.
Analog Integrated Circuit Device Data
Freescale Semiconductor
Open Load can be detected by setting ECOLT. A small
If the Open load circuitry is activated (ECOLT=1), the EC
The EC output is protected against shorts to VSUP. In
The EC output is protected against shorts to GND. In case
DAC
6Bit
Figure 25. EC Circuitry
EC output voltage
Control
ECRON
ECOCF
ECOCF
ECON
ECOL
EC Digital to Analog Converter
are controlled. The EC glass circuitry has a 6 bit D/A
converter to control the output voltage between 0 and 1.4V.
EC D/A Converter Control Register (ECDACC)
ECDAx — Digital to Analog Bits
Reset
Read
Write
The EC output, and therefore the voltage on the EC glass
These read/write bits set the output voltage on the EC pin.
Bit7
Register Name and Address: ECDACC - $06
0
0
On/Off
On/Off
6
0
0
ECD
A5
5
0
T1
T2
FUNCTIONAL DEVICE OPERATION
ECD
A4
4
0
ECD
A3
3
0
OPERATIONAL MODES
VSUP
GND
ECR
EC
ECD
A2
2
0
ECD
A1
1
0
908E622
ECD
Bit0
A0
0
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