UPD78322L-XXX Просмотр технического описания (PDF) - NEC => Renesas Technology

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UPD78322L-XXX

16/8-BIT SINGLE-CHIP MICROCONTROLLER

NEC => Renesas Technology 

µPD78320, 78322

1.2 NON- PORT PINS (2/2)

Pin Name

I/O

EA

Input

AN0 to AN7

AVREF

AVDD

AVSS

RESET

X1

X2

VDD

VSS

NC

Input

Input

—

—

Input

Input

—

––

—

—

Function

Dual-

Function Pin

In the µPD78322, EA pin is normally connected to VDD. Connecting EA pin to VSS sets the

ROM-less mode and accesses the external memory. In the µPD78320, this pin should be

—

fixed to “0” (low level). The EA pin level cannot be changed during operation.

A/D converter analog input

—

A/D converter reference voltage input

—

A/D converter analog power supply

—

A/D converter GND

—

System reset input

—

Crystal connect pin for sysem clock oscillation. When an external clock is supplied,

—

the clock is input to X1 and the inverted clock is input to X2. (X2 can also be left open.)

—

Positive power supply

—

GND pin

—

Not internally connected. Connected to VSS (GND) (can also be left open).

—

14

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