ADNS-7550 Avago Technologies US Inc., ADNS-7550 Datasheet - Page 24

• Manufacturer Part Number: ADNS-7550
• Description: Optical Mouse Sensor,DIP
• Manufacturer: Avago Technologies US Inc.

Specifications of ADNS-7550

• Mounting Style: Through Hole
• Termination Style: Solder Pin
• Supply Voltage: 5 V
• Operating Temperature Range: 0 C to + 40 C
• Product: Optical
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 516-2180; ADNS-7550

Data Type: Eight-bit number.
USAGE: Maximum Pixel value in current frame. Minimum value = 0, maximum value = 254. The maximum pixel value
can vary with every frame.
Maximum_Pixel
Access: Read
Pixel_Sum
Access: Read
Data Type: High 8 bits of an unsigned 16-bit integer.
USAGE: This register is used to find the average pixel value. It reports the upper eight bits of a 18-bit counter, which
sums all pixels in the current frame. It may be described as the full sum divided by 1024. To find the average pixel
value, use the following formula:
Average Pixel = Register Value * 1024/676 = Register Value * 1.515
The maximum register value is 167. The minimum is 0. The pixel sum value can change on every frame.
Minimum_Pixel
Access: Read
Data Type: Eight-bit number.
USAGE:Minimum Pixel value in current frame. Minimum value = 0, maximum value = 254. The minimum pixel value
can vary with every frame.
24
Field
Field
Field
Bit
Bit
Bit
MP
MP
AP
7
7
7
7
7
7
MP
MP
AP
6
6
6
6
6
6
MP
MP
AP
5
5
5
Address: 0x09
Reset Value: 0xd0
Address: 0x0a
Reset Value: 0x80
Address: 0x0b
Reset Value: 0x00
5
5
5
MP
MP
AP
4
4
4
4
4
4
MP
MP
AP
3
3
3
3
3
3
MP
MP
AP
2
2
2
2
2
2
MP
AP
MP
1
1
1
1
1
1
MP
MP
AP
0
0
0
0
0
0