20-101-0303 Rabbit Semiconductor, 20-101-0303 Datasheet - Page 29
![SMARTSCREEN OP7100 W/TOUCHSCREEN](/photos/7/91/79136/20-101-0303_sml.jpg)
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
- Current page: 29 of 126
- Download datasheet (780Kb)
Since R34 >> RN2, the difference between V
voltage, would be 5 V × (R30/R34). For a nominal hysteresis voltage of
1.25 V, R
Memory Protection
When
select line, preventing accidental writes.
Battery Backup
The backup battery protects data in the RAM and the real-time clock (RTC).
VRAM, the voltage supplied to the RAM and RTC, can also protect other
devices attached to the system against power failures. The ADM691 super-
visor switches VRAM to VBAT or VCC, whichever is greater. (To prevent
“hunting,” the switchover actually occurs when Vcc is 50 mV higher than
VBAT.)
The circuit draws no current from the battery once regular power is applied.
System Reset
The ADM691 chip drives the
up internally.
OP7100
/RESET
V
V
30
L
H
= 0.25 × R34.
=
Figure 3-3. OP7100 Power-Failure Detection Circuit
=
1
1
is active, the ADM691 supervisor disables the RAM chip-
3 .
3 .
V
V
W
W
⎡
⎢
⎢
⎣
⎡
⎢
⎣
1
1
+
+
⎛
⎜
⎝
⎛
⎜
⎝
R30
R29
R30
R29
/RESET
⎞
⎟
⎠
⎞
⎟
⎠
−
+
⎛
⎜ ⎜
⎝
⎛
⎜
⎝
1.3
R30
R34
R30
line. The
V(R34
⎞
⎟
⎠
5 (
⎤
⎥
⎦
V
-
H
+
1.3
and V
RN2)
/RESET
V)
L
, the hysteresis
⎞
⎟ ⎟
⎠
⎤
⎥
⎥
⎦
W
line is not pulled
RST
Hardware 29
W
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