name:         HT48RA0A_20PIN
function:     8-Bit OTP IR Remote Controller
package:      SOP20,20
manufacturer: Holtek

        +--()--+
    PA1 | 1  20| PA2
    PA0 | 2  19| PA3
    PB1 | 3  18| PA4
    PB0 | 4  17| PA5
PC0/REM | 5  16| PA6
    VDD | 6  15| PA7
   OSC2 | 7  14| PB2
   OSC1 | 8  13| PB3
    VSS | 9  12| PB4
   RESB |10  11| PB5
        +------+


This pinout came from the Chipdir:
http://www.chipdir.org/

name:         HT48RA0A_24PIN
function:     8-Bit OTP IR Remote Controller
package:      SOP24,24
manufacturer: Holtek

        +--()--+
    PA1 | 1  24| PA2
    PA0 | 2  23| PA3
    PB1 | 3  22| PA4
    PB0 | 4  21| PA5
PC0/REM | 5  20| PA6
    VDD | 6  19| PA7
   OSC2 | 7  18| PB2
   OSC1 | 8  17| PB3
    VSS | 9  16| PB4
   RESB |10  15| PB5
     NC |11  14| PB6
     NC |12  13| PB7
        +------+


This pinout came from the Chipdir:
http://www.chipdir.org/