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參數(shù)資料
| 型號(hào)： | SAA55XX |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | TV microcontrollers with Closed Captioning (CC) and On-Screen Display (OSD) |
| 中文描述： | 與隱藏字幕（CC）和屏幕顯示（OSD電視微控制器） |
| 文件頁數(shù)： | 3/84頁 |
| 文件大小： | 352K |
| 代理商： | SAA55XX |
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2000 Feb 23
3
Philips Semiconductors
Preliminary specification
TV microcontrollers with Closed Captioning (CC)
and On-Screen Display (OSD)
SAA55xx
1
FEATURES
Single-chip microcontroller with integrated On-Screen
Display (OSD)
One Time Programmable (OTP) memory for both
Program ROM and character sets
Single power supply: 3.0 to 3.6 V
5 V tolerant digital inputs and I/O
29 I/O port via individual addressable controls
Programmable I/O for push-pull, open-drain and
quasi-bidirectional
Two port lines with 8 mA sink (at <0.4 V) capability, for
direct drive of Light Emitting Diode (LED)
Single crystal oscillator for microcontroller, OSD and
data capture
Power reduction modes: Standby, Idle and Power-down
Byte level I
2
C-bus up to 200 kHz with dual port I/O
(Slave mode up to 400 kHz)
32 Dynamically Redefinable Characters for OSDs
Special graphic characters allowing four colours per
character
Selectable character height 9, 10, 13 and 16 TV lines
Pin compatibility throughout family
Operating temperature:
20 to +70
°
C.
2
GENERAL DESCRIPTION
The SAA55xx OSD only family of devices are a derivative
of the Philips industry standard 80C51 microcontroller and
are intended for use as the central control mechanism in a
television receiver. They provide control functions for the
television system, On-Screen Display (OSD) and some
versions include an integrated data capture function.
ThemaindifferencesbetweentheOSDonlyfamilyandthe
SAA55xx Text/CC family of baseline devices are:
Program ROM size: 16 to 64-kbyte
Display RAM size: 1.25-kbyte (1 page Text OSD or
CC
/
OSD)
Auxiliary RAM size: 0.75-kbyte
No teletext data capture (Closed Caption only)
Additional power saving mode (Standby).
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