Rainbow-electronics AT89C5132 Manuel d'utilisateur télécharger pdf (Page 10)

AT8xC5132

4173A–8051–08/02

Table 13. System Signal Description

Signal

Name Type Description

Alternate

Function

RST I

Reset Input

Holding this pin high for 64 oscillator periods while the oscillator is

running resets the device. The Port pins are driven to their reset

conditions when a voltage lower than V

is applied, whether or not the

oscillator is running.

This pin has an internal pull-down resistor which allows the device to be

reset by connecting a capacitor between this pin and

Asserting RST when the chip is in Idle mode or Power-down mode

returns the chip to normal operation.

TST

Test Input

Test mode entry signal. This pin must be set to

Table 14. Power Signal Description

Signal

Name Type Description

Alternate

Function

VDD PWR

Digital Supply Voltage

Connect these pins to +3V supply voltage.

VSS GND

Circuit Ground

Connect these pins to ground.

AVDD PWR

Analog Supply Voltage

Connect this pin to +3V supply voltage.

AVSS GND

Analog Ground

Connect this pin to ground.

PVDD PWR

PLL Supply voltage

Connect this pin to +3V supply voltage.

PVSS GND

PLL Circuit Ground

Connect this pin to ground.

UVDD PWR

USB Supply Voltage

Connect this pin to +3V supply voltage.

UVSS GND

USB Ground

Connect this pin to ground.

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 161 162

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Rainbow-electronics AT89C5132 Manuel d'utilisateur Page 10

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