MM912H634DM1AER2 Freescale Semiconductor, MM912H634DM1AER2 Datasheet - Page 61

• 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
4.4.1
To supply the MCU die and minor additional loads two cascaded voltage regulators have been implemented, VDDX (5.0 V) and
VDD (2.5 V). External capacitors (C
4.4.2
To guarantee safe power up and down behavior, special dependencies are implemented to prevent unwanted MCU execution.
Figure 18
Freescale Semiconductor
shows a standard power up and power down sequence.
Voltage Regulators VDD (2.5 V) & VDDX (5.0 V)
Power Up Behavior / Power Down Behavior
ADC2p5
HSUP
C
C
HSUP
ADC
VDD
HS1
HS2
) and (C
Figure 17. MM912F634 Power Supply
VDDX
HSUP (18V)
HS1 & HS2
Reference
Regulator
ADC 2.5V
VROV
) are required for proper regulation.
VDDX
VDD
INTERNAL
INTERNAL
HVI
VDD (2.5V)
LVI
VDDX (5V)
Regulator
Regulator
bg1p25sleep
ADC
÷
LVRX
LVR
LBI
C
C
VDDX
VDD
VDDX
VDD
Power Supply
MM912F634
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