MCP1650DM-LED2 Microchip Technology, MCP1650DM-LED2 Datasheet - Page 23

• Manufacturer Part Number: MCP1650DM-LED2
• Description: BOARD DEMO FOR MCP1650 WHITE LED
• Manufacturer: Microchip Technology

Specifications of MCP1650DM-LED2

• Current - Output / Channel: 15mA
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 32.4V
• Features: Dimmable
• Voltage - Input: 2.7 ~ 4.5V
• Utilized Ic / Part: MCP1650
• Core Chip: MCP1650
• Topology: Boost
• Output Current: 560mA
• No. Of Outputs: 1
• Input Voltage: 2.7V To 5.5V
• Kit Contents: Board
• Development Tool Type: Hardware - Eval/Demo Board
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

C.1
© 2005 Microchip Technology Inc.
DEVICE FIRMWARE
For the latest version of the MCP1650 Multiple White LED Demo Board firmware, visit
the Microchip web site at www.microchip.com.
FIGURE C-1:
Appendix C. Demo Board Firmware
Reset TMR0
Set GP0 = 1
No
Initialize GP0 = 1(Output Port),
Set Option Reg for 250 Hz Freq
Present Key = 0, TMR0 = 0
Firmware Flowchart – Page 1.
MCP1650 MULTIPLE WHITE LED
Increment Key Buffer
Check for Key Press
If Present Key = 01
Wake-up Due
to Key Press
TMR0 d 1Fh
Start Timer
Yes
DEMO BOARD USER’S GUIDE
GP0 = 0
START
Sleep
Yes
Yes
No
Yes
No
Yes
No
If Present Key = 02
If TMR0 d 1Fh
If TMR0 d 0Eh
Set GP0 = 0
Start Timer
Yes
Yes
No
No
No
If Present Key = 03
If TMR0 d 06h
DS51586A-page 19
Set GP0 = 0
Start Timer
Yes
Yes
No