參數(shù)資料
型號(hào): SAA5502PS
廠商: NXP Semiconductors N.V.
英文描述: Standard TV microcontrollers with On-Screen Display (OSD)(帶全屏顯示的標(biāo)準(zhǔn)型TV控制器)
中文描述: 微控制器與標(biāo)準(zhǔn)電視屏幕顯示(OSD)(帶全屏顯示的標(biāo)準(zhǔn)型電視控制器)
文件頁數(shù): 29/80頁
文件大?。?/td> 311K
代理商: SAA5502PS
1999 Oct 27
29
Philips Semiconductors
Preliminary specification
Standard TV microcontrollers with
On-Screen Display (OSD)
SAA55xx
8.6
External (auxiliary) memory
The normal 80C51 external memory area has been
mappedinternallytothedevice,thismeansthattheMOVX
instruction accesses memory internal to the device.
8.6.1
A
UXILIARY
RAM
PAGE SELECTION
The Auxiliary RAM page pointer is used to select one of
the 256 pages within the Auxiliary RAM, not all pages are
allocated, refer to Fig.10 for further detail. A page consists
of 256 consecutive bytes.
Fig.9 Auxiliary RAM allocation.
(1) Amount of Data RAM depends on the device.
(2) Amount of Display RAM depends on the device.
handbook, halfpage
GSA031
CLUT
upper 32 kbytes
lower 32 kbytes
FFFFH
8C00H
DISPLAY REGISTERS
87F0H
87FFH
871FH
8700H
DISPLAY RAM
FOR
TEXT PAGES
(2)
DATA RAM
(1)
47FFH
4800H
2000H
1FFFH
500H
4FFH
0000H
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