
Pin Assignment
MM912F634 Pin Description
MM912F634
Freescale Semiconductor
9
39
LS2
Low Side Output 2
Low Side output 2 used to drive small inductive loads like relays. The output is
short-circuit protected, includes active clamp circuitry and can be also controlled by
the PWM module.
40
ISENSEL
Current Sense Pins L
Current Sense differential input “Low”. This pin is used in combination with
ISENSEH to measure the voltage drop across a shunt resistor. See
Section 4.20,device configurations.
41
ISENSEH
Current Sense Pins H
Current Sense differential input “High”. This pin is used in combination with
ISENSEL to measure the voltage drop across a shunt resistor.
Section 4.20,device configurations.
42
NC
Not connected Pin
This pin is reserved for alternative function and should be left floating.
43
TEST_A
Test Mode Pin
Analog die Test Mode pin for Test Mode only. This pin must be grounded in user
mode.
44
TCLK
Test Clock Input
Test Mode Clock Input pin for Test Mode only. The pin can be used to disable the
internal watchdog for development purpose in user mode. See
Section 4.9,45
RESET_A
Reset I/O
Bidirectional Reset I/O pin of the analog die. Active low signal. Internal pull-up. VDDX
46
RESET
MCU Reset Pin
The RESET pin is an active low bidirectional control signal. It acts as an input to
initialize the MCU to a known start-up state, and an output when an internal MCU
function causes a reset. The RESET pin has an internal pull-up device to EVDDX.
47
BKGD
MCU Background Debug
and Mode Pin
The BKGD/MODC pin is used as a pseudo-open-drain pin for the background
debug communication. It is used as MCU operating mode select pin during reset.
The state of this pin is latched to the MODC bit at the rising edge of RESET. The
BKGD pin has a pull-up device.
48
NC
Not connected Pin
This pin is reserved for alternative function and should be left floating or connected
to GND.
Note:
4. An optional filter capacitor CVSENSE is recommended to be placed between the board connector and RVSENSE to GND for increased ESD
performance.
5. An optional filter capacitor CLx is recommended to be placed between the board connector and RLx to GND for increased ESD
performance.
Table 3. MM912F634 Pin Description (continued)
Pin #
Pin Name
Formal Name
Description