SAB-80C535-N datasheet(10/56 Pages) INFINEON

Part #	SAB-80C535-N

Description	8-Bit CMOS Single-Chip Microcontroller

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Manufacturer	INFINEON [Infineon Technologies AG]

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SAB 80C515/80C535

Semiconductor Group

9

P1.7-P1.0 29-36

24-31

I/O

Port 1

is an 8-bit bidirectional I/O port with

internal pullup resistors. Port 1 pins that

have 1's written to them are pulled high by

the internal pullup resistors, and in that

state can be used as inputs. As inputs,

port 1 pins being externally pulled low will

source current (II L in the DC

characteristics) because of the internal

pullup resistors. The port is used for the

low-order address byte during program

verification. Port 1 also contains the

interrupt, timer, clock, capture and

compare pins that are used by various

options. The output latch corresponding to

a secondary function must be

programmed to a one (1) for that function

to operate (except when used for the

compare functions). The secondary

functions are assigned to the port 1 pins

as follows:

– INT3/CC0 (P1.0): interrupt 3 input/

compare 0 output/capture 0 input

– INT4/CC1 (P1.1): interrupt 4 input/

compare 1 output/capture 1 input

– INT5/CC2 (P1.2): interrupt 5 input/

compare 2 output/capture 2 input

– INT6/CC3 (P1.3): interrupt 6 input/

compare 3 output/capture 3 input

– INT2 (P1.4): interrupt 2 input

– T2EX (P1.5): timer 2 external reload

trigger input

– CLKOUT (P1.6): system clock output

– T2 (P1.7): counter 2 input

Pin Definitions and Functions (cont’d)

Symbol

P-LCC-68

P-MQFP-80

Input (I)

Output (O)

Function

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