Sensors

2

Freescale Semiconductor, Inc.

MPL115A1

1

Block Diagram and Pin Descriptions

Figure 1. Block Diagram and Pin Connections

Table 1. Pin Description

Pin

Name

Function

1

VDD

VDD Power Supply Connection: VDD range is 2.375V to 5.5V.

2

CAP

External Capacitor: Output decoupling capacitor for main internal regulator. Connect a 1

μF ceramic capacitor

to ground.

3

GND

Ground

4

SHDN

Shutdown: Connect to GND to disable the device. When in shut down the part draws no more than 1

μA supply

current and all communications pins (CS, SCLK, DOUT, DIN) are high impedance. Connect to VDD for normal

operation.

5

CS

CS: Chip Select line.

6

DOUT

DOUT: Serial data output

7

DIN

DIN: Serial data input

8

SCLK

SPI: Serial Clock Input.

Diff

Amp

Temp

Sensor

ADC

DIN

GND

VDD

DOUT

Temperature

Pressure

Coefficient

Storage

ADDR

ADDR

ADDR

ADDR

ADDR

SPI

Interface

SHDN

CS

CAP

SCLK

Diff

Amp

Temp

Sensor

ADC

DIN

GND

VDD

DOUT

Temperature

Pressure

Coefficient

Storage

ADDR

ADDR

ADDR

ADDR

ADDR

ADDR

ADDR

ADDR

SPI

Interface

SHDN

CS

CAP

SCLK

VDD

CAP

SHDN

DIN

CS

DOUT

GND

SCLK

μC

1

μF

1

μF

Microcontroller