Sim2 M80 Spécifications télécharger pdf (Page 48)

M80 Hardware Design

M80_HD_V1.0 - 48 -

Host(DTE)

controller

TXD

RXD

GND

Module(DCE)

RTS

CTS

RTS

CTS

GND

RXD

TXD

UART PORT

Figure 20: Connection of UART port associated hardware flow control

3.9.1.3. Software upgrade

The TXD, RXD can be used to upgrade software. The PWRKEY pin must be pulled down before

the software upgrade. Please refer to the following figures for software upgrade.

IO Connector

TXD

RXD

GND

PWRKEY

Module (DCE)

UART Port

TXD

RXD

GND

PWRKEY

Figure 21: Connection of software upgrade

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