MM912F634CV2AP datasheet(9/335 Pages) FREESCALE

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Pin Assignment

MM912F634 Pin Description

MM912F634

Freescale Semiconductor

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.

See Section 4.12, “Low Side Drivers - LSx"

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,

“Current Sense Module - ISENSE". Note: This pin function is not available on all

device configurations.

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,

“Current Sense Module - ISENSE". Note: This pin function is not available on all

device configurations.

Not connected Pin

This pin is reserved for alternative function and should be left floating.

TEST_A

Test Mode Pin

Analog die Test Mode pin for Test Mode only. This pin must be grounded in user

mode!

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,

“Window Watchdog". The pin is recommended to be grounded in user mode.

RESET_A

Reset I/O

Bidirectional Reset I/O pin of the analog die. Active low signal. Internal pull-up. VDDX

based. See Section 4.7, “Resets". To be externally connected to the RESET pin.

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.

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.

Not connected Pin

This pin is reserved for alternative function and should be left floating or connected

to GND.

Note:

3. An optional filter capacitor CVSENSE is recommended to be placed between the board connector and RVSENSE to GND for increased ESD

performance.

4. 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

MM912F634CV2AP Datasheet(PDF) 9 Page - Freescale Semiconductor, Inc

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