CONFIDENTIAL 10
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2005-06-08
3.2 Reset
NOTE
HPM103H-6 requires an external Power-On-Reset (POR) circuit which
provides a reset pulse at XRESET-pin after the supply voltages are
connected. The reset pulse should be active (low state) at least 100ms after
power-up.
3.3 UART interface
Two asynchronous UART ports are available for serial interfacing. The baud rates are
fully programmable.
The data format is however fixed: x, N, 8, 1, i.e. x baud, No parity, eight data bits and
1 stop bit. No other data formats are supported. LSB is sent first. CMOS signal levels
are used.
Parity: N
Data Bits: 8
Stop bits: 1
Figure 7 UART Data format.
The UART ports are named PORT0 and PORT1. PORT0 is used e.g. for booting. PORT1
can be utilized for the emulator or NMEA interface.
HPM103H-6
