MM9Z1 datasheet(9/452 Pages) NXP

9 / 452 page

NXP Semiconductors

MM9Z1_638

PIN ASSIGNMENT

PA1

MCU PA1 / MOSI

General purpose port A input or output pin 1, shared with the MOSI signal of the integrated

SPI interface. See Port integration module (S12ZIPIMV1).

PA0

MCU PA0 / MISO

General purpose port A input or output pin 0, shared with the MISO signal of the integrated

SPI interface. See Port integration module (S12ZIPIMV1).

VSSRX

MCU 5.0 V Ground

External ground for the MCU - VDDRX return path.

VDDRX

MCU 5.0 V Supply

5.0 V MCU input power supply. This pin must be connected to VDDX.

VSS1

MCU 2.5 V Ground

External ground for the MCU - VDDD2D return path.

Not connected

This pin must be grounded in the application.

VDDD2D

MCU 2.5 V Supply

2.5 V MCU input power supply for the die to die interface. This pin must be connected to

VDDH.

Not connected

This pin must be grounded in the application.

DGND

Digital Ground

This pin is the device digital ground connection.

VDDH

Voltage Regulator Output

2.5 V

2.5 V output voltage. This pin must be connected to the VDDD2D. An external capacitor

(CVDDH) is needed.

GNDSUB

Substrate Ground

Substrate ground connection.

VDDX

MCU 5.0 V and External

CAN Supply

5.0 V output power supply for the internal MCU die and an external 8 or 14 pin CAN

interface. This pin must be connected to VDDRX. An external capacitor (CVDDX) is needed.

Not connected

This pin is not connected to the die. Within the application, it could be connected or left

open.

VSUP

Power Supply

This pin is the device power supply pin. A reverse battery protection diode is required.

External capacitor(s) needed.

LIN

LIN Bus

This pin is the single-wire LIN bus.

LGND

LIN Ground

This pin is the device LIN ground connection.

VDDA

Analog Voltage Regulator

Output

Voltage regulator output pin, to supply the analog front end, and the external temperature

sensor circuitry. An external capacitor (CVDDA) is needed.

AGND

Analog Ground

This pin is the device analog voltage regulator and LP oscillator ground connection.

PTB5/

GND_SW

GND Switch Temp

This pin is a switch to GND for connection of the external temperature sensors circuitry.

PTB4

Analog Input & General

Purpose Input 4

General purpose 5.0 V Input (connection to timer and selectable pull-down). This pin

shares several functions:

Temperature sensor input.

Direct voltage sense, used with an external resistor divider

Wake-up input.

General purpose 5.0 V input

GNDSUB

Substrate Ground

Substrate ground connection.

ISENSEL

Current Sense L

Current sense input “Low”. This pin is used in combination with ISENSEH to measure the

voltage drop across a shunt resistor.

ISENSEH

Current Sense H

Current sense input “high”. This pin is used in combination with ISENSEL to measure the

voltage drop across a shunt resistor.

ADCGND

Analog Digital Converter

Ground

Analog digital converter ground connection.

VSENSE0

Voltage Sense 0

Precision battery voltage measurement input. This pin can be connected directly to the

battery line for voltage measurements. The voltage preset at this input is scaled down by

an internal voltage divider. The pin is self protected against reverse battery connections. An

external resistor (RVSENSE) is needed for protection.

VSENSE1

Voltage Sense 1

Precision battery voltage measurement input. This pin can be connected directly to the

battery line for voltage measurements. The voltage preset at this input is scaled down by

an internal voltage divider. The pin is self-protected against reverse battery connections. An

external resistor (RVSENSE) is needed for protection.

Table 2. MM9Z1_638 pin description (continued)

Pin #

Pin name

Formal name

Description

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