Q67120-C724 查看數據表（PDF） - Siemens AG

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产品描述 (功能)

生产厂家

Q67120-C724

High-Performance 8-Bit CMOS Single-Chip Microcontroller

Siemens AG 

SAB 80C517/80C537

Pin Definitions and Functions (cont’d)

Symbol

Pin Number

I/O *) Function

P-LCC-84 P-MQFP-100-2

P6.0 - P6.7 70 - 77

46 - 50,

54 - 56

P8.0 - P8.3 78 - 81

57 - 60

* I = Input

O = Output

I/O Port 6

is a 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 (IIL, in the

DC characteristics) because of the

internal pull-up resistors. Port 6 also

contains the external A/D converter

control pin and the transmit and receive

pins for serial channel 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:

– ADST (P6.0): external A/D converter

start pin

– R × D1 (P6.1): receiver data input of

serial interface 1

– T × D1 (P6.2): transmitter data output

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

Semiconductor Group

13

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