MN101C115 Datasheet, PDF (65/170 Pages) Panasonic Semiconductor – Request for your special attention and precautions in using the technical information and semiconductors described in this book

Chapter 3 Port Functions
s P21
Pull-up resistor control
Special function input data
Port input data
Special function input data
Read
Reset
R
DQ
L
Read
Reset
R
DQ
L
Read
Read
Read
AC zero-cross detection circuit
Schmitt trigger input
Pull-up
resistor
control
Control bit
Register
(address)
Control bit
Port input _Register
(address)
Special
function
input
selection
Special function
Control bit
Register
(address)
P21
P2PLU1
P2PLU
(x'03F42')
P2IN1
P2IN
(x'03F22')
SENS
P21IM
FLOAT1
(x'03F4B')
Figure 3-3-5 Configuration and Functions of P21
I/O Port Configuration and Functions 51