20-101-0303 Rabbit Semiconductor, 20-101-0303 Datasheet - Page 25
20-101-0303
Manufacturer Part Number
20-101-0303
Description
SMARTSCREEN OP7100 W/TOUCHSCREEN
Manufacturer
Rabbit Semiconductor
Datasheet
1.101-0303.pdf
(126 pages)
Specifications of 20-101-0303
Display Type
STN - Super-Twisted Nematic
Viewing Area
121.00mm L x 91.00mm W
Backlight
CCFL - White
Dot Pitch
0.36mm x 0.36mm
Dot Pixels
320 x 240 (QVGA)
Interface
Serial
Product
Prototyping Accessories
Processor Type
Z180
Sram
128 KB
Flash
512 KB
Number Of I/os
16
Backup Battery
3 V Lithium Coin Type
Operating Voltage
10 V to 30 V
Power Consumption
4.5 W
Interface Type
Ethernet
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Display Mode
-
Dot Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
20-101-0303
20-101-303
20-101-303
316-1175
20-101-303
20-101-303
316-1175
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Power Management
The OP7100 was designed to operate from a 12 V to 30 V DC source, and
consumes about 4.5 W with the backlight on, 1.5 W with the backlight off.
To allow for a surge current when the OP7100 is first turned on, the power
supply used must be able to handle at least four times this power (for
example, 800 mA at 24 V).
The OP7100 power supply is converted internally to supply three voltages.
1. A switching regulator outputs VCC (+ 5 V).
2. A linear regulator outputs VEE (approximately –20 V).
3. A high-voltage section supplies 300 V rms to drive the cold-cathode
Figure 3-2 shows these internal power supplies in a block diagram
The DC input source can also be brought out on pin 9 of header J10, the
DE-9 connector, by installing a 0 Ω resistor at R32. This option allows
power to be supplied to a serial device connected to the OP7100 as long as
the serial device’s RS-232 port can handle the DC input on pin 9.
OP7100
fluorescent backlight. The backlight can be turned on or off under
software control whereby a high on the gate of Q3 enables Q1 and Q2 to
oscillate, and a low turns off Q3, stopping the oscillation of Q1 and Q2.
Figure 3-2. Block Diagram of OP7100 Internal Power Regulators
Be sure to use a power supply with sufficient capacity (for
example, 1.1 A at 24 V) to handle surges when the OP7100
and any devices connected to it are first turned on.
Hardware 25
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