Description: Using AT89C2051-24PC in 20-pins SOIC-20 SMT Package , we deleveloped a very verstyle matrix keypad with a power ON/OFF dedicated key with 3 sec hold to ON/OFF the P1.7 and scanning all the keys and send the appropriate byte to the serial port of the MCU. this code could b used in many applications with other embedded controllers.
File list (Check if you may need any files):
KEYPAD_FIRMWARE.C
KEYPAD_FIRMWARE.LST
KEYPAD_FIRMWARE.OBJ
KEYPAD_PROJECT
KEYPAD_PROJECT.hex
KEYPAD_PROJECT.lnp
KEYPAD_PROJECT.M51
KEYPAD_PROJECT.Opt
KEYPAD_PROJECT.plg
KEYPAD_PROJECT.Uv2
KEYPAD_PROJECT_Opt.Bak
KEYPAD_PROJECT_Uv2.Bak
KEYPAD_SCANNER.H
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