L3G4200DHTR STMicroelectronics, L3G4200DHTR Datasheet - Page 19

• Manufacturer Part Number: L3G4200DHTR
• Description: Gyroscopes Digital Gyro 96 FIFO 250 / 500 / 2000 DPS
• Manufacturer: STMicroelectronics

Specifications of L3G4200DHTR

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

L3G4200DH
4
4.1
Digital interfaces
The registers embedded in the L3G4200DH may be accessed through both the I
serial interfaces. The latter may be software-configured to operate either in 3-wire or 4-wire
interface mode.
The serial interfaces are mapped onto the same pins. To select/exploit the I
CS line must be tied high (i.e., connected to Vdd_IO).
Table 10.
I
The L3G4200DH I
content can also be read back.
The relevant I
Table 11.
There are two signals associated with the I
data line (SDA). The latter is a bidirectional line used for sending and receiving the data
to/from the interface. Both lines must be connected to Vdd_IO through an external pull-up
resistor. When the bus is free both the lines are high.
The I
mode.
2
C serial interface
SDA/SDI/SDO
Transmitter
2
Pin name
SCL/SPC
Receiver
C interface is compliant with fast mode (400 kHz) I
Master
Term
Slave
SDO
CS
Serial interface pin description
I
2
2
C terminology
C terminology is given in the table below.
2
C is a bus slave. The I
SPI enable
I
I
SPI serial port clock (SPC)
I
SPI serial data input (SDI)
3-wire interface serial data output (SDO)
SPI serial data output (SDO)
I
The device which sends data to the bus
The device which receives data from the bus
The device which initiates a transfer, generates clock signals and terminates a
transfer
The device addressed by the master
2
2
2
2
C/SPI mode selection (1: I
C serial clock (SCL)
C serial data (SDA)
C least significant bit of the device address
Doc ID 17300 Rev 1
2
C is employed to write data to registers whose
2
C bus: the serial clock line (SCL) and the serial
2
C mode; 0: SPI enabled)
Pin description
Description
2
C standards as well as with normal
Digital interfaces
2
C interface, the
2
C and SPI
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