TTP255 Datasheet, PDF (41/49 Pages) Tontek Design Technology – Target Spec.

Preliminary
PDI3~PDI0: port D’ pad data
TTP255
TonTouch^TM
PEI: Port E pad data reading address [R], default value [----]
Register
Bit3
Bit2
Bit1 Bit0
Bit Name
PEI3
PEI2
PEI1 PEI0
Read/Write
R
R
R
R
PEI3~PEI0: port E’ pad data
PFI: Port F pad data reading address [R], default value [----]
Register
Bit3
Bit2
Bit1 Bit0
Bit Name
PFI3
PFI2
PFI1 PFI0
Read/Write
R
R
R
R
PFI3~PFI0: port F’ pad data
12’/08/21
Page 41 of 49
Ver3.0