PIC12C671/JW Microchip Technology, PIC12C671/JW Datasheet - Page 476

• Manufacturer Part Number: PIC12C671/JW
• Description: IC MCU EPROM 1KX14 A/D 8CDIP
• Manufacturer: Microchip Technology
• Series: PIC® 12Cr

Specifications of PIC12C671/JW

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 10MHz
• Peripherals: POR, WDT
• Number Of I /o: 5
• Program Memory Size: 1.75KB (1K x 14)
• Program Memory Type: EPROM, UV
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 4x8b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 8-CDIP (0.300", 7.62mm) Window
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Connectivity: -

PICmicro MID-RANGE MCU FAMILY
25.10
DS31025A-page 25-18
Discrimination Ratio
Discrimination ratio is a way to calculate the contrast levels that a panel can achieve. The first
example is a static waveform from Figure 25-3. The voltages V
of 1 and 0. The next step is to construct an equation for one frame to help visualize the DC and
RMS voltages present on an individual pixel that is ON and OFF. The rest of the following shows
the calculation of the DC, RMS, and Discrimination Ratio.
Example 25-3:
See
Figure 25-3
D = V
Discrimination Ratio Calculation for Static MUX
V
COMx - SEGx [ON]
COMx - SEGx [OFF]
RMS
RMS
V
V
for Static waveform.
RMS
RMS
[ON]
[OFF]
[ON] =
[OFF] =
= 1 V
0 V
V
V
= 1 - 1,
= 0 + 0,
(1)
(0)
=
2
2
+ (-1)
+ (0)
2
2
V
V
DC
DC
2
2
= 0
= 0
=
=
1
and V
1 V
0 V
1997 Microchip Technology Inc.
0
will be assigned values