SAA5265 Просмотр технического описания (PDF) - Philips Electronics
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SAA5265 Datasheet PDF : 24 Pages
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Philips Semiconductors
10 and 1 page intelligent teletext decoders
Preliminary specification
SAA5264; SAA5265
PINNING
SYMBOL
PIN TYPE
DESCRIPTION
Port 2: 8-bit programmable bidirectional port with alternative functions
P2.0/PWM
P2.1/PWM0
1
I/O output for 14-bit high precision Pulse Width Modulator (PWM)
2
I/O outputs for 6-bit PWMs 0 to 6
P2.2/PWM1
3
I/O
P2.3/PWM2
P2.4/PWM3
4
I/O
5
I/O
P2.5/PWM4
P2.6/PWM5
P2.7/PWM6
6
I/O
7
I/O
8
I/O
Port 3: 8-bit programmable bidirectional port with alternative functions
P3.0/ADC0
P3.1/ADC1
9
I/O inputs for the software Analog-to-Digital-Converter (ADC) facility
10 I/O
P3.2/ADC2
P3.3/ADC3
11 I/O
12 I/O
P3.4/PWM7
VSSC
30 I/O output for 6-bit PWM7
13
− core ground
Port 0: 8-bit programmable bidirectional port
SCL(NVRAM) 14
SDA(NVRAM) 15
I I2C-bus Serial Clock input to Non-Volatile RAM
I/O I2C-bus Serial Data input/output (Non-Volatile RAM)
P0.2
P0.3
16 I/O input/output for general use
17 I/O input/output for general use
P0.4
18 I/O input/output for general use
P0.5
P0.6
19 I/O 8 mA current sinking capability for direct drive of Light Emitting Diodes (LEDs)
20 I/O
P0.7
VSSA
CVBS0
CVBS1
21 I/O input/output for general use
22
− analog ground
23
I Composite Video Baseband Signal (CVBS) input; a positive-going 1 V
24
I (peak-to-peak) input is required; connected via a 100 nF capacitor
SYNC_FILTER 25
IREF
26
FRAME
27
I sync-pulse-filter input for CVBS; this pin should be connected to VSSA via a
100 nF capacitor
I reference current input for analog circuits; for correct operation a 24 kΩ resistor
should be connected to VSSA
O Frame de-interlace output synchronized with the VSYNC pulse to produce a
non-interlaced display by adjustment of the vertical deflection circuits
TEST
COR
VDDA
B
28
I not available; connect this pin to VSSA
29
O contrast reduction: open-drain, active LOW output which allows selective contrast
reduction of the TV picture to enhance a mixed mode display
30 I/O P3.4/PWM7 (described above)
31
− analog supply voltage (3.3 V)
32
O Blue colour information pixel rate output
2000 Jan 27
5
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