MM912H634CV1AE Freescale Semiconductor, MM912H634CV1AE Datasheet - Page 83

• Manufacturer Part Number: MM912H634CV1AE
• Description: 64KS12 LIN2xLS/HS Isense
• Manufacturer: Freescale Semiconductor
• Series: -r

Specifications of MM912H634CV1AE

• Applications: Automotive
• Core Processor: HCS12
• Program Memory Type: FLASH (64 kB)
• Controller Series: HCS12
• Ram Size: 6K x 8
• Interface: LIN
• Number Of I /o: -
• Voltage - Supply: 5.5 V ~ 27 V
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP Exposed Pad
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

4.13.3.2.2
Note:
4.13.3.2.3
Note:
4.13.4
The Low Side switches are controlled by the bits LS1:2 in the Low Side Control Register (LSCR). In order to control the Low
Sides, the LSCEN register has to be correctly written once after RESET or VROV.
To protect the device against over-voltage when an inductive load (relay) is turned off an active clamp circuit is implemented.
4.13.4.1
To protect the application for an unintentional activation of the drivers in case of a voltage regulator over-voltage failure, the Low
Side Drivers will automatically shut down in case of an over-voltage on one of the two regulators.
The shutdown is fully handled in the analog section of the driver. This will secure the feature in case the digital logic is damaged
due to the over-voltage condition.
Freescale Semiconductor
Offset
Offset
79.
80.
Reset
Reset
W
W
R
R
7 - LSOTC
3 - LS2CL
2 - LS1CL
1 - LS2OL
0 - LS1OL
LSCEN
(79)
(80)
Offset related to 0x0200 for blocking access and 0x300 for non blocking access within the global address space.
Offset related to 0x0200 for blocking access and 0x300 for non blocking access within the global address space.
Field
Field
3-0
0x31
0x32
LSOTC
Functional Description
Voltage Regulator Over-voltage Protection
7
0
7
0
0
Low Side Over-temperature condition present. Both drivers are turned off. Reading the register will clear the LSOT interrupt
flag if present. See
Low Side 2 Current Limitation
Low Side 1 Current Limitation
Low Side 2 Open Load
Low Side 1Open Load
Low Side Control Enable - To allow the LS Control via LSx, the correct value has to be written into the LSCEN Register.
Low Side Status Register (LSSR)
Low Side Control Enable Register (LSCEN)
0x5 - Low Side Control Enabled
all other values - Low Side Control Disabled
6
0
0
6
0
0
Section 4.7, “Interrupts
Table 115. LSSR - Register Field Descriptions
Table 117. LSEN - Register Field Descriptions
Table 116. Low Side Enable Register (LSEN)
Table 114. Low Side Status Register (LSSR)
MM912_634 Advance Information, Rev. 4.0
5
0
0
5
0
0
for details.
4
0
0
4
0
0
Description
Description
LS2CL
3
0
3
0
LS1CL
2
0
2
0
LSCEN
LS2OL
Low Side Drivers - LSx
1
0
1
0
Access: User read/write
Access: User read
LS1OL
0
0
0
0
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