mm908e626 Freescale Semiconductor, Inc, mm908e626 Datasheet - Page 19

• Manufacturer Part Number: mm908e626
• Description: Integrated Stepper Motor Driver With Embedded Mcu And Lin Serial Communication
• Manufacturer: Freescale Semiconductor, Inc

RESET INTERNAL SOURCES
Autonomous Watchdog
(watchdog function).
High-Temperature Reset
the temperature rises above a certain value. The reset is
maskable with bit HTRE in the Reset Mask Register. After a
reset the high-temperature reset is disabled.
Low-Voltage Reset
falls below a certain threshold, it will pull down the
terminal.
High-Voltage Reset
the voltage is above a certain threshold, it will pull down the
RST_A
Reset Mask Register. After a reset the high-voltage reset is
disabled.
RESET EXTERNAL SOURCE
External Reset Terminal
SMARTMOS device by pulling down the
communication link between the microcontroller and the
908E626.
Analog Integrated Circuit Device Data
Freescale Semiconductor
AWD modules generates a reset because of a timeout
To prevent damage to the device, a reset will be initiated if
The LVR is related to the internal V
The HVR is related to the external V
The microcontroller has the capability of resetting the
The serial peripheral interface (SPI) creates the
The interface consists of four terminals (see
•
SS
terminal. The reset is maskable with bit HVRE in the
— Slave Select
DD
SUP
. In case the voltage
RST
SERIAL PERIPHERAL INTERFACE
voltage. In case
terminal.
Figure
RST_A
10):
Reset Mask Register (RMR)
TTEST — High-Temperature Reset Test
the overtemperature shutdown limit for final test. Reset clears
the HTRE bit.
HVRE — High-Voltage Reset Enable Bit
conditions. Reset clears the HVRE bit.
HTRE — High-Temperature Reset Enable Bit
conditions. Reset clears the HTRE bit.
The master sends address and data, slave system status,
and data of the selected address.
Reset
Read
Write
This read / write bit is for test purposes only. It decreases
• 1 = Low-temperature threshold enabled.
• 0 = Low-temperature threshold disabled.
This read / write bit enables resets on high-voltage
• 1 = High-voltage reset enabled.
• 0 = High-voltage reset disabled.
This read / write bit enables resets on high-temperature
• 1 = High-temperature reset enabled.
• 0 = High-temperature reset disabled.
• MOSI — Master-Out Slave-In
• MISO — Master-In Slave-Out
• SPSCK — Serial Clock (maximum frequency 4.0 MHz)
A complete data transfer via the SPI consists of 2 bytes.
TTEST
Bit 7
0
Register Name and Address: RMR - $06
6
0
0
LOGIC COMMANDS AND REGISTERS
5
0
0
FUNCTIONAL DEVICE OPERATION
4
0
0
3
0
0
2
0
0
HVRE
1
0
908E626
HTRE
Bit 0
0
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