MT9M001C12STM-EVAL Micron Technology Inc, MT9M001C12STM-EVAL Datasheet - Page 13

• Manufacturer Part Number: MT9M001C12STM-EVAL
• Manufacturer: Micron Technology Inc

Specifications of MT9M001C12STM-EVAL

• Lead Free Status / Rohs Status: Compliant

Two-Wire Serial Interface Sample Write and Read Sequences
16-Bit Write Sequence
Figure 8: Timing Diagram Showing a Write to Reg0x09 with the Value 0x0284
16-Bit Read Sequence
Figure 9: Timing Diagram Showing a Read from Reg0x09; Returned Value 0x0284
PDF: 09005aef81c2856f/Source: 09005aef80a3e031
MT9M001_DS_2.fm - Rev. F 5/06 EN
S
SCLK
DATA
S
SCLK
DATA
START
START
0xBA ADDR
0xBA ADDR
ACK
A typical write sequence for writing 16 bits to a register is shown in Figure 8. A start bit
given by the master, followed by the write address, starts the sequence. The image
sensor will then give an acknowledge bit and expects the register address to come first,
followed by the 16-bit data. After each eight-bit transfer, the image sensor will give an
acknowledge bit. All 16 bits must be written before the register will be updated. After 16
bits are transferred, the register address is automatically incremented so that the next 16
bits are written to the next register. The master stops writing by sending a start or stop
bit.
A typical read sequence is shown in Figure 9. First the master has to write the register
address, as in a write sequence. Then a start bit and the read address specifies that a read
is about to happen from the register. The master then clocks out the register data eight
bits at a time. The master sends an acknowledge bit after each eight-bit transfer. The
register address should be incremented after every 16 bits is transferred. The data
transfer is stopped when the master sends a no-acknowledge bit.
ACK
Reg0x09
Two-Wire Serial Interface Sample Write and Read Sequences
Reg0x09
ACK
MT9M001: 1/2-Inch Megapixel Digital Image Sensor
0xBB ADDR
ACK
13
0000 0010
Micron Technology, Inc., reserves the right to change products or specifications without notice.
ACK
0000 0010
ACK
ACK
1000 0100
©2004 Micron Technology, Inc. All rights reserved.
1000 0100
ACK
NACK
STOP
STOP