Rainbow-electronics AT83C5127 Manual do Utilizador descarregar pdf (Página 4)

4

AT83C5127

7519A–SCR–04/05

Pin Description

Table 1. Pin Description

Port

LQFP32

QFN32

Internal

Power

Supply ESD I/O

Reset

Level Alt

Reset

Config Conf 1 Conf 2 Conf 3 Led

CIO 32 32 CVCC 6KV I/O 0 CIO Port51

CVCC inactive at reset.

ESD tested with a 10µF on CVCC

CC4 3 3 CVCC 6KV I/O 0 CC8 Port51

CVCC inactive at reset

ESD tested with a 10µF on CVCC

P1.2 2 2 VCC 2KV I/O 1 CPRES Port51

Weak & medium pull-up can be

disconnected

CC4 5 5 CVCC 6KV I/O 0 CC4 Port51

CVCC inactive at reset

ESD tested with a 10µF on CVCC

CCLK 6 6 CVCC 6KV O 0 CCLK Push-pull

CVCC inactive at reset

ESD tested with a 10µF on CVCC

CRST 4 4 CVCC 6KV O 0 CRST Push-pull

CVCC inactive at reset

ESD tested with a 10µF on CVCC

P1.6 23 23 VCC 2KV I/O 1 Port51

P1.7 31 31 VCC 2KV I/O 1 CCLK1 Port51

P3.0 22 22 VCC 2KV I/O 1 RxD Port51 Push-pull

P3.1 24 24 VCC 2KV I/O 1 TxD Port51 Push-pull

P3.2 20 20 VCC 2KV I/O 1 INT0 Port51 LED0

P3.3 19 19 VCC 2KV I/O 1 INT1 Port51 Push-pull

P3.4 18 18 VCC 2KV I/O 1 T0 Port51 Push-pull LED1

P3.5 21 21 VCC 2KV I/O 1 T1 Port51

P3.6 17 17 VCC 2KV I/O 1 Port51 LED2

P3.7 13 13 VCC 2KV I/O 1 Port51 LED3

P5.0 7 7 VCC 2KV I/O 1 Port51 Push-pull

RST

16 16 VCC I/0

Reset Input

The Port pins are driven to their reset conditions when a voltage lower

than V

IL

is applied, whether or not the oscillator is running.

This pin has an internal 10K pull-up resistor which allows the device to

be reset by connecting a capacitor between this pin and VSS.

Asserting RST

when the chip is in Idle mode or Power-Down mode

returns the chip to normal operation.

The output is active for at least 12 oscillator periods when an internal

reset occurs.

1 2 3 4 5 6 7 8 9

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