SAF-C502-2R20N Ver la hoja de datos (PDF) - Infineon Technologies

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SAF-C502-2R20N

8-Bit CMOS Microcontroller

Infineon Technologies 

C502

Pin Definitions and Functions

Symbol

P1.7 – P1.0

Pin Number

P-LCC-44 P-DIP-40

9–2

8–1

I/O*) Function

I

Port 1

is a bidirectional I/O port with internal pull-up

resistors. Port 1 pins that have 1s written to

them are pulled high by the internal pull-up

resistors, and in that state can be used as

inputs. As inputs, port 1 pins being externally

pulled low will source current (IIL, in the DC

characteristics) because of the internal pull-up

resistors. Port 1 also contains the timer 2 pins

as secondary function. The output latch corre-

sponding to a secondary function must be pro-

grammed to a one (1) for that function to

operate.

The secondary functions are assigned to the

pins of port 1, as follows:

2

1

3

2

P1.0 T2 Input to counter 2

P1.1 T2EX Capture - Reload trigger of

timer 2 / Up-Down count

*) I = Input

O = Output

Semiconductor Group

7

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