mt9v011p11st Micron Semiconductor Products, mt9v011p11st Datasheet - Page 29

• Manufacturer Part Number: mt9v011p11st
• Description: 1/4-inch Vga Cmos Active-pixel Digital Image Sensor
• Manufacturer: Micron Semiconductor Products

Tw o-Wire Serial Bus Timing
minimum master clock cycles between transitions.
These are specified in the following diagrams in mas-
ter clock cycles.
NOTE:
NOTE:
09005aef80c6407f
MT9V011_external_DS_2.fm - Rev. A 8/04 EN
Figure 22: Serial Host Interface Start
Figure 23: Serial Host Interface Stop
The two-wire serial bus operation requires certain
All timing are in units of master clock cycle.
After a read, the master receiver must pull down SDATA t o acknowledge receipt of dat a bits. When read sequence is
complete, the master must generate a no acknowledge by leaving SDATA to float high. On the following cycle a start or
stop bit may be used.
Figure 27: Acknowledge Signal Timing After an 8-bit Read from the Sensor
Figure 26: Acknowledge Signal Timing After an 8-bit Write to the Sensor
SDATA
Condition Timing
Condition Timing
SDATA
SCLK
SCLK
5
5
SDATA
SDATA
SCLK
SCLK
4
4
7
6
Sensor tri-states SDATA pin
(turns off pull down)
Sensor pulls down
SDATA pin
29
1/4-INCH VGA CMOS ACTIVE-PIXEL
NOTE:
NOTE:
Figure 24: Serial Host Interface Data
Figure 25: Serial Host Interface Data
S DATA is driven by an off-chip transmitter.
S DATA is pulled LOW by the sensor, or allowed to be
pulled HIGH by a pull-up resistor off -chip.
Micron Technology, Inc., reserves the right to change products or specifications without notice.
6
3
DIGITAL IMAGE SENSOR
SDATA
SDATA
Timing for Write
Timing for Read
SCLK
SCLK
4
5
4
©2004 Micron Technology, Inc.
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