MM912H634DM1AER2 Freescale Semiconductor, MM912H634DM1AER2 Datasheet - Page 60

• Manufacturer Part Number: MM912H634DM1AER2
• Description: 16-bit Microcontrollers - MCU 64KS12 LIN2XLS/HS ISENSE
• Manufacturer: Freescale Semiconductor

Specifications of MM912H634DM1AER2

• Rohs: yes
• Core: HCS12
• Processor Series: MM912F634
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 20 MHz
• Program Memory Size: 32 KB
• Data Ram Size: 2 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 5.5 V to 18 V
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: LQFP-48
• Mounting Style: SMD/SMT
• A/d Bit Size: 10 bit
• A/d Channels Available: 15
• Interface Type: SPI
• Maximum Operating Temperature: + 105 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 15
• Number Of Timers: 1
• Program Memory Type: Flash
• Supply Voltage - Max: 18 V
• Supply Voltage - Min: 5.5 V

Functional Description and Application Information
4.4
The MM912F634 analog die supplies VDD (2.5 V), VDDX (5.0 V), and HSUP, based on the supply voltage applied to the VS1
pin. VDD is cascaded of the VDDX regulator. To separate the High Side outputs from the main power supply, the VS2 pin does
only power the High Side drivers. Both supply pins have to be externally protected against reverse battery conditions. To supply
external Hall Effect Sensors, the HSUP pin will supply a switchable regulated supply. See
Output -
A reverse battery protected input (VSENSE) is implemented to measure the Battery Voltage directly. A serial resistor (RVSENSE)
is required on this pin. See
ADC (VS1SENSE) to measure the VS1 pin voltage directly. See
To have an independent ADC verification, the internal sleep mode bandgap voltage can be routed to the ADC (BANDGAP). As
this node is independent from the ADC reference, any out of range result would indicate malfunctioning ADC or Bandgap
reference. See
To stabilize the internal ADC reference voltage for higher precision measurements, the current limited ADC2p5 pin needs to be
connected to an external filter capacitor (C
Section 4.19, “Analog Digital Converter -
The following safety features are implemented:
Freescale Semiconductor
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HSUP".
LBI - Low Battery Interrupt, internally measured at VSENSE
LVI - Low Voltage Interrupt, internally measured at VS1
HVI - High Voltage Interrupt, internally measured at VS2
VROVI - Voltage Regulator Over-voltage Interrupt internally measured at VDD and VDDX
LVR - Low Voltage Reset, internally measured at VDD
LVRX - Low Voltage Reset, internally measured at VDDX
HTI - High Temperature Interrupt measured between the VDD and VDDX regulators
Over-temperature Shutdown measured between the VDD and VDDX regulators
Power Supply
Section 4.24, “Internal Bandgap Reference Voltage Sense -
Section 4.22, “Supply Voltage Sense -
ADC".
ADC2p5
). It is not recommended to connect additional loads to this pin. See
Section 4.23, “Internal Supply Voltage Sense -
VSENSE". In addition, the VS1 supply can be routed to the
BANDGAP".
Section 4.10, “Hall Sensor Supply
VS1SENSE".
Power Supply
MM912F634
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