Datasheet > MG87FL52AE

MG87FL52AE

更新时间： 2022-11-20 10:07:31

品牌	Logo	应用领域
笙泉 - MEGAWIN		微控制器
页数	文件大小	规格书
44页	857K
描述
8 bits microcontroller

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数据手册

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MG87FL52AE 数据手册

Megawin Technology Co., Ltd.

MG87FE/L52

P3.0 (RXD)

P3.1 (TXD)

P3.2 (INT0)

P3.3 (INT1)

P3.4 (T0)

I/O Port 3 is an 8-bit bidirectional I/O port

with internal pull-ups and can be used

as inputs. Port 3 pins that have 1s

written to them are pulled high by the

internal pull-ups and can be used as

inputs. As inputs, port 3 pins that are

externally pulled low will source current

because of the internal pull-ups. Port3

also serves other special functions of

this device.

P3.5 (T1)

P3.6 (/WR)

P3.7 (/RD)

P3.0 and P3.1 act as receiver and

transceiver of the data for UART

function block, Alias RXD and TXD.

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

I/O Port4 is extended I/O ports such like

Port1. It can be available only on

44L-PLCC and 44L-PQFP package.

P4.1

P4.2 (/INT3)

P4.3 (/INT2)

P4.2 and P4.3 also act as external

interrupt sources, alias INT3 and INT2.

RESET

ALE

A high on this pin for at least two

machine cycles will reset the device.

Output pulse for latching the low bytes

of address during accesses to external

memory.

/PSEN

/EA

The read strobe to external program

memory, low active.

/EA must be kept at low to enable the

device to fetch program code from

external flash memory.

An internal pull-up resistor has been

embedded in this pin.

XTAL1

XTAL2

Input to the inverting oscillator

amplifier.

Output from the inverting amplifier.

Preliminary ver 1.3

Date: 2009-JAN-20

1 2 3 456 7 8...44

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