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型號(hào)：	UPD780076
廠商：	NEC Corp.
元件分類：	8位微控制器
英文描述：	8-Bit Single-Chip Microcontrollers
中文描述：	8位單芯片微控制器
文件頁(yè)數(shù)：	46/592頁(yè)
文件大?。?/td>	3307K
代理商：	UPD780076

CHAPTER 3 PIN FUNCTIONS (

PD780078 SUBSERIES)

User’s Manual U14260EJ3V1UD

3.2.9 P80 (Port 8)

P80 is a 1-bit I/O port. Besides serving as an I/O port, it also functions as the chip select input of serial interface

CSI1. The following operating modes can be specified in 1-bit units.

(1) Port mode

This pin functions as a 1-bit I/O port. It can be specified as input or output in 1-bit units using port mode register

An on-chip pull-up resistor can be connected by setting pull-up resistor option register 8 (PU8).

(2) Control mode

This pin functions as the chip select input pin (SS1) of serial interface CSI1.

This is the A/D converter reference voltage input pin. This pin is also used for the analog power supply. When

using the A/D converter, supply power to this pin.

When the A/D converter is not used, connect this pin directly to V

This is the ground potential pin of the A/D converter. Use the same potential as that of the V

even when not using the A/D converter.

3.2.12 RESET

This is an active-low system reset input pin.

3.2.13 X1 and X2

Resonator connection pins for main system clock.

For an external clock supply, input the clock signal to X1 and its inverted signal to X2.

3.2.14 XT1 and XT2

Resonator connection pins for subsystem clock.

For an external clock supply, input the clock signal to XT1 and its inverted signal to XT2.

is the positive power supply pin for the ports.

is the positive power supply pin for other than the ports.

is the ground potential pin for the ports.

is the ground potential pin for other than the ports.

(flash memory versions only)

High-voltage application pin for flash memory programming mode setting and program write/verify.

Handle in either of the following ways.

Independently connect a 10 k

pull-down resistor.

Set the jumper on the board so that this pin is connected directly to the dedicated flash programmer in

programming mode and directly to V

in normal operation mode.

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相關(guān)代理商/技術(shù)參數(shù)	參數(shù)描述
UPD780101MC-047-5A4-E1-A	制造商:Renesas Electronics Corporation 功能描述:
UPD780102MC-082-5A4-A	制造商:Renesas Electronics Corporation 功能描述:
UPD780102MC-083-5A4-A	制造商:Renesas Electronics Corporation 功能描述:
UPD780134GK-424-9ET-E3-A	制造商:Renesas Electronics Corporation 功能描述:
UPD78014GC-765-AB8	制造商:NEC Electronics Corporation 功能描述:

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