SAF-C517A-4R24M Ver la hoja de datos (PDF) - Infineon Technologies

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Fabricante

SAF-C517A-4R24M

8-bit CMOS Microcontroller

Infineon Technologies 

C517A

Table 1

Pin Definitions and Functions (cont’d)

6\PERO

P6.0 - P6.7

3LQ 1XPEHU

304)3 3/&&

46 - 50,

54 - 56

70 - 77

46

47

48

P8.0 - P8.3 57 - 60

70

71

72

78 - 81

RO

61

82

*) I = Input

O = Output

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I/O Port 6

is a quasi-bidirectional I/O port with internal

pull-up resistors. Port 6 pins that have 1 s

written to them are pulled high by the

internal pull-up resistors, and in that state

can be used as inputs. As inputs, port 6 pins

being externally pulled low will source

current (I IL, in the DC characteristics)

because of the internal pull-up resistors.

Port 6 also contains the external A/D

converter start control pin and the transmit

and receive pins for the serial interface 1.

The output latch corresponding to a

secondary function must be programmed to

a one (1) for that function to operate.

The secondary functions are assigned to the

pins of port 6, as follows :

P6.0 ADST external A/D converter

start pin

P6.1 RxD1 receiver data input of serial

interface 1

P6.2 TxD1 transmitter data input of

serial interface 1

I

Port 8

is a 4-bit unidirectional input port. Port pins

can be used for digital input, if voltage levels

meet the specified input high/low voltages,

and for the higher 4-bit of the multiplexed

analog inputs of the A/D converter,

simultaneously.

P8.0 - P8.3 AIN8 - AIN11 analog

input 8 - 11

O Reset Output

This pin outputs the internally synchronized

reset request signal. This signal may be

generated by an external hardware reset, a

watchdog timer reset or an oscillator

watchdog reset. The RO output signal is

active low.

Semiconductor Group

10

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