EM6812F2TP24B datasheet(5/81 Pages) EMMICRO

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EM6812

www.emmicroelectronic.com

Circuit Connectivity

The EM6812 has the same pin-out in both the SO24 and TSSOP24 pin package.

Minimum connectivity includes the power supply on VSS and VDD, a capacitor on Vreg, and de-coupling capacitance on VDD.

Circuit reference terminal (substrate) is on VSS.

The 32kHz Crystal is only needed for systems requiring low frequency Crystal operation.

The integrated supply voltage regulator filters supply noise and allows lowest power peripheral operations. For proper

operation, a capacitor (470nF minimum) must be connected to the regulator’s VREG terminal. This terminal must not be

used for any other outside connection.

Figure 1: Sample minimum connectivity

Note:

•

ALL circuit IO's (except OscIn) are on VDD level. OscIn terminal is only used in conjunction with an quartz Crystal. The

terminal input voltages must never exceed the Vreg voltage.

•

The quartz crystal should be shielded with VSS to keep noise away.

•

When using the Crystal oscillator PA[7] and PA[6] should preferably used as static inputs only to avoid noise coupling

on the OscIn and OscOut high impedance inputs.

PB3

PB2

PB1

PB0

i.c.

VSS

Test

Reset

PA0

PA1

PA2

PA3

PA7

PA6

PA5

PA4

Vreg

VDD

OscOut

OscIn

PB5

PB6

PB7

VDD

32khz

VDD

VSS

470nF

PB4

Reset

Button

Shield

with

VSS

10k

EM6812F2TP24B 数据表(PDF) 5 Page - EM Microelectronic - MARIN SA

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