IEI Integration NOVA-HM551 v1.00 - Manual (Page 33)

NOVA-HM551 5.25" SBC
Page 19
3.2.2 Battery Connector
CN Label: BAT1
CN Type: 2-pin wafer (1x2)
CN Location: See Figure 3-3
CN Pinouts: See Table 3-4
This is connected to the system battery. The battery provides power to the system clock to
retain the time when power is turned off.
Figure 3-3: Battery Connector Location
Pin Description
1 Battery+ (+3.3V)
2 Ground
Table 3-4: Battery Connector Pinouts
3.2.3 Digital I/O Connector
CN Label: DIO1
CN Type: 10-pin header
CN Location: See Figure 3-4
CN Pinouts: See Table 3-5
The digital I/O connector provides programmable input and output for external devices.
The digital I/O provides 4-bit output and 4-bit input.