– 4 –

CXP841P24

Pin Description

Symbol

I/O

Description

I/O/Analog input

PA0/AN0

to

PA7/AN7

(Port A)

8-bit I/O port. I/O can be

set in a unit of single bits.

Incorporation of the

pull-up resistance can be

set through the software

in a unit of 4 bits.

(8 pins)

Analog inputs to A/D converter.

(8 pins)

I/O

PC0 to PC7

(Port C)

8-bit I/O port. I/O can be set in a unit of single bits. Capable of driving

12mA sink current. Incorporation of pull-up resistor can be set through

the software in a unit of 4 bits.

(8 pins)

I/O

PD0 to PD7

(Port D)

8-bit I/O port. I/O can be set in a unit of single bits. Incorporation of pull-

up resistor can be set through the software in a unit of 4 bits.

(8 pins)

I/O

PF0 to PF7

(Port F)

8-bit I/O port. I/O can be set in a unit of single bits. Incorporation of

pull-up resistor can be set through the software in a unit of 4 bits.

(8 pins)

Input/Input

Input/Input

Input/Input

Input/Input

Output/Output

Output/Output/

Output

PE0/EC0

PE1/EC1

PE2/RMC

PE3/NMI

PE4/PWM

PE5/TO/ADJ

(Port E)

6-bit port. Lower 4 bits

are for inputs; upper

2 bits are for outputs.

Incorporation of pull-up

resistor can be set

through the software.

(6 pins)

External event inputs for timer/counter.

(2 pins)

Remote control reception circuit input.

Non-maskable interruption request input.

14-bit PWM output.

Rectangular wave output for 16-bit

timer/counter. Output for 32kHz oscillation

frequency demultiplication.

I/O/Input

I/O/Input

I/O/I/O

I/O/Input

I/O/Output

I/O/I/O

I/O/Input

Output/Output

PB0/CINT

PB1/CS0

PB2/SCK0

PB3/SI0

PB4/SO0

PB5/SCK1

PB6/SI1

PB7/SO1

(Port B)

Lower 7-bit I/O port in

which I/O can be set in a

unit of single bits. Also,

an uppermost bit (PB7)

exclusively for output.

Incorporation of pull-up

resistor can be set

through the software in a

unit of 4 bits.

(8 pins)

External capture input to 16-bit timer/counter.

Chip select input for serial interface (CH0).

Serial clock I/O (CH0).

Serial data input (CH0).

Serial data output (CH0).

Serial clock I/O (CH1).

Serial data input (CH1).

Serial data output (CH1).