SAB-C517A 查看數據表（PDF） - Siemens AG

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SAB-C517A

8-bit CMOS Microcontroller

Siemens AG 

C517A

Table 1

Pin Definitions and Functions (cont’d)

6\PERO

RESET

3LQ 1XPEHU

304)3 3/&&

73

10

VAREF

VAGND

P7.0 - P7.7

78

79

87 - 80

11

12

20-13

N.C.

2 - 5, 25,

–

28, 29,

51 - 53,

74 - 77

88, 89

*) I = Input

O = Output

,2 )XQFWLRQ

I

RESET

A low level on this pin for the duration of two

machine cycles while the oscillator is

running resets the C517A. A small internal

pullup resistor permits power-on reset using

only a capacitor connected to VSS .

– Reference voltage for the A/D converter

– Reference ground for the A/D converter

I

Port 7

is an 8-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 lower 8-bit of the multiplexed

analog inputs of the A/D converter,

simultaneously.

P7.0 - P7.7 AIN0 - AIN7 analog

input0 - 7

– Not connected

These pins of the P-MQFP-100 package

must not be connected.

Semiconductor Group

13

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