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SAA55XX

Enhanced TV microcontrollers with On-Screen Display (OSD)

Philips Electronics 

Philips Semiconductors

Enhanced TV microcontrollers with

On-Screen Display (OSD)

Preliminary specification

SAA55xx

SYMBOL

COR

VDDA

B

G

R

VDS

HSYNC

VSYNC

VSSP

VDDC

OSCGND

XTALIN

XTALOUT

RESET

VDDP

P1.0/INT1

P1.1/T0

P1.2/INT0

P1.3/T1

P1.6/SCL0

P1.7/SDA0

P1.4/SCL1

P1.5/SDA1

VPE-2

n.c.

SDIP52

29

31

32

33

34

35

36

37

38

39

40

41

42

43

PIN

LQFP100

43

45

46

47

48

52

53

55

12, 60

63

69

70

71

73

44

75

45

76

46

78

47

79

48

80

49

81

50

82

51

83

52

58

−

62

− 3, 7 to 10,14, 15, 19 to 21,

23, 26, 27, 33, 36 to 40,

49 to 51, 56 to 58, 61,

64 to 68, 72, 74, 77,

85 to 92, 99

TYPE

O

−

O

O

O

O

I

I

−

−

−

I

O

I

−

I/O

I/O

I/O

I/O

I/O

I/O

I/O

I/O

I

−

DESCRIPTION

Open-drain, active LOW output which allows

selective contrast reduction of the TV picture to

enhance a mixed mode display.

+3.3 V analog power supply

pixel rate output of the BLUE colour information

pixel rate output of the GREEN colour information

pixel rate output of the RED colour information

video/data switch push-pull output for dot rate fast

blanking

Schmitt triggered input for a TTL-level version of the

horizontal sync pulse; the polarity of this pulse is

programmable by register bit TXT1.H POLARITY.

Schmitt triggered input for a TTL-level version of the

vertical sync pulse; the polarity of this pulse is

programmable by register bit TXT1.V POLARITY.

periphery ground

+3.3 V core power supply

crystal oscillator ground

12 MHz crystal oscillator input

12 MHz crystal oscillator output

If the reset input is HIGH for at least 2 machine

cycles (24 oscillator periods) while the oscillator is

running, the device is reset; this pin should be

connected to VDDP via a capacitor.

+3.3 V periphery power supply

Port 1. 8-bit programmable bidirectional port with

alternative functions.

P1.0/INT1 is external interrupt 1 which can be

triggered on the rising and falling edge of the pulse.

P1.1/T0 is the Counter/Timer 0. P1.2/INT0 is

external interrupt 0. P1.3/T1 is the Counter/Timer 1.

P1.6/SCL0 is the serial clock input for the I2C-bus

and P1.7/SDA0 is the serial data port for the

I2C-bus. P1.4/SCL1 is the serial clock input for the

I2C-bus and P1.5/SDA1 is the serial data port for the

I2C-bus.

OTP programming voltage

not connected

2000 Feb 23

9

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