M10 Hardware Design
RTC
Core
3.9K
MODULE
VRTC
Large-capacitance
Capacitor
Figure 15: RTC supply from capacitor
z Coin-type Capacitor backup
Coin-type Rechargeable Capacitor such as XH414H-IV01E form Seiko can be used.
Figure 16: Seiko XH414H-IV01E Charge Characteristic
3.8 Serial interfaces
The module provides two unbalanced asynchronous serial ports. One is the serial port ,the other
is the debug port. The module is designed as a DCE (Data Communication Equipment), following
the traditional DCE-DTE (Data Terminal Equipment) connection. The module and the client
(DTE) are connected through the following signal (as following figure shows). Autobauding
supports baud rate from 4800bps to 115200bps.
M10_HD_V1.00 - 33 -
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