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SAA5290ZP датащи(PDF) 4 Page - NXP Semiconductors

номер детали SAA5290ZP
подробное описание детали  One page Economy Teletext/TV microcontroller
PDF  33 Pages
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производитель  PHILIPS [NXP Semiconductors]
домашняя страница  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

SAA5290ZP датащи(HTML) 4 Page - NXP Semiconductors

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February 1995
4
Philips Semiconductors
Preliminary specification
One page Economy Teletext/TV
microcontroller
SAA5290
PINNING
SYMBOL
PIN
DESCRIPTION
P2.0/TPWM
1
PORT 2: 8-bit open-drain bidirectional port with alternative functions. P2.0/TPWM is the
output for the 14-bit high precision PWM. P2.1/PWM0 to P2.6/PWM5 are the outputs for
the 6-bit PWMs 0 to 5.
P2.1/PWM0
2
P2.2/PWM1
3
P2.3/PWM2
4
P2.4/PWM3
5
P2.5/PWM4
6
P2.6/PWM5
7
P2.7
8
P3.0/ADC0
9
PORT 3: 5-bit open-drain bidirectional port with alternative functions. P3.0/ADC0 to
P3.2/ADC2 are the inputs for the software ADC facility.
P3.1/ADC1
10
P3.2/ADC2
11
P3.3
12
P3.4
30
VSSD1
13
digital ground 1 for teletext and microcontroller circuits.
P0.0
14
PORT 0: 8-bit open-drain bidirectional port. P0.5 and P0.6 have 10 mA current sinking
capability at 0.5 V for direct drive of LEDs.
P0.1
15
P0.2
16
P0.3
17
P0.4
18
P0.5
19
P0.6
20
P0.7
21
VSSA
22
analog ground.
CVBS0
23
Composite video input. A positive-going 1 V (peak-to-peak) input is required, connected
via a 100 nF capacitor.
CVBS1
24
BLACK
25
Video black level storage input. This pin should be connected to VSSA via a 100 nF
capacitor.
IREF
26
Reference current input for analog circuits, connected to VSSA via a 27 kΩ resistor.
FRAME
27
De-interlace output synchronized with the VSYNC pulse to produce a non-interlaced
display by adjustment of the vertical deflection currents.
VSSD2
28
Digital ground 2.
COR
29
Open-drain, active LOW output which allows selective contrast reduction of the TV
picture to enhance a mixed mode display.
RGBREF
31
DC input voltage to define the output HIGH level on the RGB pins.
B
32
Dot rate character output of the BLUE colour information.
G
33
Dot rate character output of the GREEN colour information.
R
34
Dot rate character output of the RED colour information.
VDS
35
Video/data switch push-pull output for dot rate fast blanking.
HSYNC
36
Horizontal sync dedicated input for a TTL-level version of the horizontal sync pulse. The
polarity of this pulse is programmable by register bit TXT1.H POLARITY.



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