T89C51SND1-ROTIL datasheet(4/60 Pages) ATMEL

부품명	T89C51SND1-ROTIL

상세설명	Single Chip Microcontroller with MP3 Decoder and Man Machine Interface

PDF	60 Pages

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제조업체	ATMEL [ATMEL Corporation]

홈페이지	http://www.atmel.com

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4 / 60 page

T8xC51SND1

Rev. D – 15-Nov-01

Figure 2. T8xC51SND1 84-pin PLCC Package

4.2 Signals

All the T8xC51SND1 signals are detailed by functionality in Table 1 to Table 14.

Table 1. Ports Signal Description

T89C51SND1-SR (FLASH)

P2.3/A11

P2.4/A12

P2.6/A14

P2.5/A13

P2.7/A15

MCLK

MDAT

MCMD

PAVSS

VSS

VDD

RST

SCLK

DSEL

DCLK

DOUT

P1.0/KIN0

P1.1/KIN1

P1.2/KIN2

P1.3/KIN3

P1.4

P1.5

P1.7/SDA

FILT

PAVDD

VDD

P1.6/SCL

TST#

P2.2/A10

ALE

ISP#

UVDD

UVSS

P4.4

P4.5

VDD

VSS

Signal

Name

Type

Description

Alternate

Function

P0.7:0

I/O

Port 0

P0 is an 8-bit open-drain bidirectional I/O port. Port 0 pins that have 1s

written to them float and can be used as high impedance inputs. To

avoid any parasitic current consumption, floating P0 inputs must be

polarized to VDD or VSS.

AD7:0

P1.7:0

I/O

Port 1

P1 is an 8-bit bidirectional I/O port with internal pull-ups.

KIN3:0

SCL

SDA

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