MPC89E515AE datasheet(5/38 Pages) MEGAWIN

Part #	MPC89E515AE

Description	8-bit micro-controller

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Manufacturer	MEGAWIN [Megawin Technology Co., Ltd]

Direct Link	http://www.megawin.com.tw/megawin_EN/Index.asp

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MEGAWIN

MPC89x515A Data Sheet

5

P3.2 and P3.3 also act as external interrupt

sources, alias INT0 and INT1.

P3.4 and P3.5 also act as event sources for

timer0 and timer1 individually, alias T0 and T1.

P3.6 also acts as write signal while access to

external memory, alias /WR.

P3.7 also acts as read signal while access to

external memory, alias /RD.

P4.0

P4.1

P4.2 (/INT3)

P4.3 (/INT2)

23

34

1

12

17

28

39

6

BU

Port4 is extended I/O ports such like Port1. It can

be available only on 44L-PLCC and 44L-PQFP

package.

RESET

9

10

4

IS

A high on this pin for at least two machine cycles

will reset the device.

ALE

30

33

27

O

Output pulse for latching the low byte of address

during accesses to external memory.

/PSEN

29

32

26

O

The read strobe to external program memory, low

active.

/EA

31

35

29

I

EA must be kept at low to enable the device to

fetch program code from external flash memory.

An

internal

pull-up

resistance

has

been

embedded in this pin.

XTAL1

19

21

15

I

Input to the inverting oscillator amplifier.

XTAL2

18

20

14

O

Output from the inverting amplifier.

VDD

40

44

38

P

Power Supply

VSS

20

22

16

G

Ground

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MPC89E515AE Datasheet(PDF) 5 Page - Megawin Technology Co., Ltd

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