MMA7456LR1 Freescale, MMA7456LR1 Datasheet - Page 17

• Manufacturer Part Number: MMA7456LR1
• Manufacturer: Freescale

Specifications of MMA7456LR1

• Package Type: LGA
• Operating Supply Voltage (min): 2.4V
• Operating Supply Voltage (typ): 2.5/3.3V
• Operating Supply Voltage (max): 3.6V
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Product Depth (mm): 3mm
• Product Height (mm): 1mm
• Product Length (mm): 5mm
• Mounting: Surface Mount
• Pin Count: 14
• Lead Free Status / RoHS Status: Compliant

SINGLE BYTE WRITE
To start a write command, the Master transmits a start condition (ST) to the MMA7456L, slave address ($1D) with the R/W bit set
to “0” for a write, the MMA7456L sends an acknowledgement. Then the Master (MCU) transmits the 8-bit address of the register
to write to, and the MMA7456L sends an acknowledgement. Then the Master (or MCU) transmits the 8-bit data to write to the
designated register and the MMA7456L sends an acknowledgement that it has received the data. Since this transmission is com-
plete, the Master transmits a stop condition (SP) to the data transfer. The data sent to the MMA7456L is now stored in the ap-
propriate register. See
MULTIPLE BYTES WRITE
The MMA7456L automatically increments the received register address commands after a write command is received. Therefore,
after following the steps of a single byte write, multiple bytes of data can be written to sequential registers after each MMA7456L
acknowledgment (ACK) is received. See
Sensors
Freescale Semiconductor
Figure 10. Multiple Byte Writes - The Master (MCU) is writing to multiple sequential registers of the MMA7456L
Figure 8. Multiple Bytes Read - The Master is reading multiple sequential registers from the MMA7456L
Figure 9. Single Byte Write - The Master (MCU) is writing to a single register of the MMA7456L
Figure 7. Single Byte Read - The Master is reading one address from the MMA7456L
Figure
9.
Figure
10.
MMA7456L
17