MM912H634DM1AER2 Freescale Semiconductor, MM912H634DM1AER2 Datasheet - Page 56

• 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
4.3
The MM912F634 analog die offers three main operating modes: Normal (Run), Stop, and Sleep. In Normal mode, the device is
active and is operating under normal application conditions. In Stop mode, the voltage regulator operates with limited current
capability, the external load is expected to be reduced while in Stop mode. In Sleep mode both voltage regulators are turned off
(V
Wake-up from Stop mode is indicated by an interrupt signal. Wake-up from Sleep mode will change the MM912F634 analog die
into reset mode while the voltage regulator is turned back on.
The selection of the different modes is controlled by the Mode Control Register (MCR).
Figure 16
4.3.1
For the device power (VS1) below V
MM912F634 analog die will enter Reset mode with the condition “Power On Reset - POR”.
4.3.2
The MM912F634 analog die enters Reset mode if a reset condition occurs (POR - Power On Reset, LVR- Low Voltage Reset,
Low Voltage VDDX Reset - LVRX, WDR - Watchdog Reset, EXR - External Reset, and WUR - Wake-up Sleep Reset).
Freescale Semiconductor
DD
= V
DDX
describes how transitions are done between the different operating modes.
Modes of Operation
= 0 V).
Power Down Mode
Reset Mode
Internal Reset
External or
1)
Initial WD to be served within t
External or Internal Reset
Wake Up
WatchDog Time-Out
POR
Figure 16. Modes of Operation and Transitions
Mode
, the MM912F634 analog die is virtually in Power Down mode. Once VS1>V
Stop
Command
(POR = 1)
Power Up
Stop
WDTO
to enable Window WD
1
,
Normal
Power
Down
Reset
Mode
V
Delay (t
DD
Power Down
(V
High and Reset
SUP
Command
Sleep
<V
RST
Sleep
Mode
POR
) expired
)
and Delay (t
V
DD
Low and VSUV = 0
VTO
) expired
Wake Up
Power Down
(V
SUP
<V
Modes of Operation
POR
)
MM912F634
POR
, the
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