MM912F634DV1AER2 Freescale Semiconductor, MM912F634DV1AER2 Datasheet - Page 60
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MM912F634DV1AER2
Manufacturer Part Number
MM912F634DV1AER2
Description
16-bit Microcontrollers - MCU DUAL LS/HS SWITCH W. LIN
Manufacturer
Freescale Semiconductor
Datasheet
1.MM912G634DV1AE.pdf
(338 pages)
Specifications of MM912F634DV1AER2
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
4.5 V to 5.5 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
6
Number Of Timers
1
Program Memory Type
Flash
Supply Voltage - Max
4.5 V
Supply Voltage - Min
4.5 V
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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
•
•
•
•
•
•
•
•
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
60
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