PIC16F876A-E/ML Microchip Technology, PIC16F876A-E/ML Datasheet - Page 477
PIC16F876A-E/ML
Manufacturer Part Number
PIC16F876A-E/ML
Description
IC MCU FLASH 8KX14 A/D 28QFN
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16F688T-ISL.pdf
(688 pages)
3.PIC16C770-ISO.pdf
(8 pages)
4.PIC16F873A-ISO.pdf
(234 pages)
5.PIC16F873A-ISO.pdf
(6 pages)
6.PIC16F873A-ISO.pdf
(4 pages)
7.PIC16F873A-ISO.pdf
(6 pages)
8.PIC16F873A-ISO.pdf
(4 pages)
9.PIC16F873A-ISO.pdf
(22 pages)
Specifications of PIC16F876A-E/ML
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
22
Program Memory Size
14KB (8K x 14)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
368 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 5x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 125°C
Package / Case
28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PIC16F876A-E/ML
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
- PIC16F616T-ISL PDF datasheet
- PIC16F688T-ISL PDF datasheet #2
- PIC16C770-ISO PDF datasheet #3
- PIC16F873A-ISO PDF datasheet #4
- PIC16F873A-ISO PDF datasheet #5
- PIC16F873A-ISO PDF datasheet #6
- PIC16F873A-ISO PDF datasheet #7
- PIC16F873A-ISO PDF datasheet #8
- PIC16F873A-ISO PDF datasheet #9
- Current page: 477 of 688
- Download datasheet (3Mb)
1997 Microchip Technology Inc.
Note:
COM0 - SEGx [ON] =
COM0 - SEGx [OFF] =
V
V
D = V
Refer to Figure 25-6
RMS
RMS
V
[ON] =
[OFF] =
RMS
RMS
[ON]
[OFF]
The next example is for Figure 25-6 which is a 1/4 MUX, 1/3 BIAS waveform. For this example,
the values 3, 2, 1 and 0 will be assigned to V
DC voltage, RMS voltage and discrimination ratio calculations are shown in
Example 25-4:
As shown in these examples, static displays have excellent contrast. The higher the multiplex
ratio of the LCD, the lower the discrimination ratio, and therefore, the lower the contrast of the
display.
Table 25-5
and BIAS.
As the multiplex of the LCD panel increases, the discrimination ratio decreases. The contrast of
the panel will also decrease, so to provide better contrast the LCD voltages must be increased
to provide greater separation between each level.
Table 25-5: Discrimination Ratio vs. MUX and Bias
1/2 MUX
1/3 MUX
1/4 MUX
STATIC
V
V
= 3
shows the V
1
3 - 3 + 1 - 1 + 1 - 1 + 1 - 1
1 - 1 - 1 + 1 - 1 + 1 - 1 + 1
(1)
(3)
2
2
V
V
Discrimination Ratio Calculation 1/4 MUX
+ (-1)
+ (-3)
0.333
0.333
0.333
V
= 1.732
OFF
0
OFF
2
2
+ (-1)
+ (1)
, V
ON
2
1/3 BIAS
2
+ (-1)
and discrimination ratios of the various combinations of MUX
0.745
0.638
0.577
+ (1)
V
1
ON
2
2
8
8
+ (-1)
+ (1)
3
2
2.236
1.915
1.732
, V
2
+ (-1)
D
+ (1)
2
, V
V
V
DC
DC
1
Section 25. LCD
2
2
, and V
+ (-1)
= 0
= 0
+ (1)
2
2
0
+ (-1)
+ (1)
respectively. The frame equation,
2
2
=
DS31025A-page 25-19
=
Example
3
V
V
25-4.
25
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