SAA5541PS 데이터 시트보기 (PDF) - Philips Electronics

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SAA5541PS

TV microcontrollers with Closed Captioning (CC) and On-Screen Display (OSD)

Philips Electronics 

Philips Semiconductors

TV microcontrollers with Closed Captioning (CC)

and On-Screen Display (OSD)

Preliminary specification

SAA55xx

handbook, full pagewidthMEMORY

PROGRAM ROM

USER ROM

(64K x 8-BIT)

CHARACTER ROM

USER ROM

(9K x 12-BIT)

SECURITY BITS INTERACTION

USER ROM PROGRAMMING

VERIFY

(ENABLE/DISABLE)

(ENABLE/DISABLE)

USER ROM PROGRAMMING

VERIFY

(ENABLE/DISABLE)

(ENABLE/DISABLE)

GSA006

Fig.4 Memory and security bit structures.

handbook, full pagewidthMEMORY

PROGRAM ROM

CHARACTER ROM

SECURITY BITS SET

USER ROM PROGRAMMING

VERIFY

(ENABLE/DISABLE)

(ENABLE/DISABLE)

DISABLED

ENABLED

DISABLED

ENABLED

GSA007

2000 Feb 23

Fig.5 Security bits for production devices.

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