HCTL-2022 Avago Technologies US Inc., HCTL-2022 Datasheet - Page 19

• Manufacturer Part Number: HCTL-2022
• Description: QUADRATURE DECODER/COUNTER INTER
• Manufacturer: Avago Technologies US Inc.
• Type: Quadrature Decoder/ Counter Interface ICr

Specifications of HCTL-2022

• Package / Case: 20-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole
• Voltage - Supply: 4.5 V ~ 5.5 V
• Applications: Encoder to Microprocessor
• Interface: 8-Bit Tristate
• Maximum Operating Temperature: + 100 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
• Other names: Q2414340A

9
Set Portb.4
Reset Portb.5
Reset Portb.6
Result_new = 0
Result_old_x = 0
Result_old_y = 0
Do
Temp = Result_2nd * Mult
‘
Result = 32-bits Count Data
‘
Loop
Figure 18. Typical Program for Reading HCTL-2032 with Atmel AVR
Waitms 25
Waitms 25
Temp = Result_lo * Mult
Temp = Result_3rd * Mult
Temp = Result_hi * Mult
Set Portb.0
Reset Portb.1
Set Portb.3
Reset Portb.0
Gosub Get_hi
Set Portb.1
Set Portb.3
Gosub Get_2nd
Reset Portb.1
Reset Portb.3
Gosub Get_3rd
Set Portb.1
Reset Portb.3
Gosub Get_lo
Set Portb.0
Mult = 1
Result = Temp
Mult = Mult * 256
Result = Result + Temp
Mult = Mult * 256
Result = Result + Temp
Mult = Mult * 256
Result = Result + Temp
‘EN1=1
‘EN2=0
‘Select X-axis
‘Disable OE
‘SEL2=1 (MSB)
‘SEL1=1 (2nd Byte)
‘SEL2=1 (2nd Byte)
‘SEL1=1 (LSB)
‘Disable OE
‘Get MSB
‘Get LSB
‘SEL1=0 (MSB)
‘Enable OE
‘SEL1=0 (3rd Byte)
‘SEL2=0 (3rd Byte)
‘SEL2=0 (LSB)
‘Get 3rd Byte
‘Get 2nd Byte
‘Assign LSB
‘Assign 2nd Byte
‘Assign MSB
‘Assign 3rd Byte