Specifications

88
Features of SLCD5
Drives digital TFT displays at QVGA
and VGA resolution
Beeper for audible touch feedback
and alarms
16 bit color
3” by 4.5” size, 0.55” thick
Touch controller (4 wire resistive) on
board
High speed ARM9 proccessor
200MHz
On-board RS232 and TTL level
interfaces
4MB data flash for user downloadable
bitmaps with RLE compression
Blacklight enable and brightness
control
SD card slot for firmware upgrades
and bitmap / macro storage
Table 29 SLCD5 features
3.5.1 Electrical Characteristics
The electrical characteristics of the SLCD5 are important for the group and must
be taken into consideration for the overall design of the Efficient HVAC
Monitoring and Feedback System. We are required to follow these specifications
during development of the system and in the final design of the system. The
SLCD5 accepts between 5 and 12V DC +/- 10% as a power source and has an
on-board switching regulator to generate the 3.3V needed by the LCD panel.
Table 30 shows some of the electrical characteristics associated with the SLCD5
controller board.
Voltage:
Typical Current
(beeper off):
Typical Current
(beeper on full):
5V
230mA (typ.)
300mA (typ.)
12V
150mA (typ.)
220mA (typ.)
Table 30 Electrical Characteristics of the SLCD5 Controller Board
(Permission to use this information is pending)
In order for the SLCD5 to operate it requires connections for power,
communications, panel, and inverter. For power the J6 or J4 connector can be
used. The difference between these two implementations is the J6 uses one
cable for both communications and power, while the J4 has separate cables for
power and communications. The J4 connector must be used if the inverter
demands more than 1A of current. For communications the COM0 port can be
used in conjunction with the J6 connector (typically RS-232) or the J7 COM1 port
can be used (RS-232 or CMOS 3.3V). For panel, the J8 connector is used for
most VGA panels, while the J9 connector is used for most QVGA panels. For
the inverter the J13 connector is used for high power for VGA panel inverters,
while the J10 connector is compatible with SLCD5 inverter cabling for QVGA
panels. The following Figure 45 shows the connectors and jumpers for the