MPL115A1_13 Datasheet, PDF (2/16 Pages) Freescale Semiconductor, Inc – Miniature SPI Digital Barometer

1 Block Diagram and Pin Descriptions
Diff
Amp
Temp
Sensor
Coefficient
Storage
ADDR
ADDR
ADDR
ADC
ADDR Pressure
ADDR Temperature
SPI
Interface
VDD
VDD
1 μF
CAP
CAP
1 μF
SHDN
SHDN
SCLK
SCLK
DIN
DIN
DOUT
DOUT
CS
CS
GND
GND
μC
Microcontroller
Table 1. Pin Description
Pin
Name
1
VDD
2
CAP
3
GND
4
SHDN
5
CS
6
DOUT
7
DIN
8
SCLK
Figure 1. Block Diagram and Pin Connections
Function
VDD Power Supply Connection: VDD range is 2.375V to 5.5V.
External Capacitor: Output decoupling capacitor for main internal regulator. Connect a 1 μF ceramic capacitor
to ground.
Ground
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.
CS: Chip Select line.
DOUT: Serial data output
DIN: Serial data input
SPI: Serial Clock Input.
MPL115A1
2
Sensors
Freescale Semiconductor, Inc.