SAA55XX Ver la hoja de datos (PDF) - Philips Electronics

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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

handbook, haFlfpFaFgFeH

BANK 0

(32-KBYTE)

8000H

FFFFH

BANK 1

(32-KBYTE)

8000H

FFFFH

BANK 2

(32-KBYTE)

8000H

7FFFH

COMMON

(32-KBYTE)

0000H

MBK952

Fig.4 ROM bank switching memory map.

handbook, full pagewidthMEMORY

PROGRAM ROM

USER ROM

(128K x 8-BIT)

CHARACTER ROM

USER ROM

(9K x 12-BIT)

PACKET 26 ROM

USER ROM

(4K x 8-BIT)

SECURITY BITS INTERACTION

USER ROM PROGRAMMING

VERIFY

(ENABLE/DISABLE)

(ENABLE/DISABLE)

USER ROM PROGRAMMING

VERIFY

(ENABLE/DISABLE)

(ENABLE/DISABLE)

USER ROM PROGRAMMING

VERIFY

(ENABLE/DISABLE)

(ENABLE/DISABLE)

MBK953

2000 Feb 23

Fig.5 Memory and security bit structures.

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