L10 Hardware Design
Figure 7
: Seiko XH414H-IV01E charge characteristic
3.7 UART interface
The module provides one universal asynchronous receiver & transmitter serial 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 (shown as Figure 8). It supports data baud-rate from 4800bps to 115200bps.
UART port
z
TXD1: Send data to the RXD signal line of DTE
z
RXD1: Receive data from the TXD signal line of DTE
Table 8: Pin definition of the UART interfaces
Interface
Name
Pin
Function
TXD1 3 Transmitting
data
UART Port
RXD1 4 Receiving
data
L10_HD_V1.01
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