參數(shù)資料
型號(hào): SAA5647HL
廠商: NXP Semiconductors N.V.
英文描述: Enhanced TV microcontrollers with On-Screen Display (OSD)(帶全屏顯示的增強(qiáng)型TV控制器)
中文描述: 與微控制器在強(qiáng)化電視屏幕顯示(OSD)(帶全屏顯示的增強(qiáng)型電視控制器)
文件頁(yè)數(shù): 10/112頁(yè)
文件大?。?/td> 436K
代理商: SAA5647HL
2000 Jun 30
10
Philips Semiconductors
Objective specification
Enhanced TV microcontrollers with
On-Screen Display (OSD)
SAA56xx
8
MEMORY ORGANISATION
The device has the capability of a maximum of 192-kbyte
Program ROM and 14-kbyte Data RAM internally.
8.1
ROM bank switching
The 128-kbyte Program ROM variant is arranged in four
banks of 32 kbytes. One of the 32-kbyte banks is common
and is always addressable. The other three banks
(Bank 0, Bank 1 and Bank 2) can be selected with SFR
ROMBK bits <2:0> (see Table 2 and Fig. 3).
The 192-kbyte Program ROM variant is arranged in six
banks of 32 kbytes. One of the 32-kbyte banks is common
and is always addressable. The other five banks (Bank 0,
Bank 1, Bank 2, Bank 3 and Bank 4) can be selected with
SFR ROMBK bits <2:0> (see Table 2 and Fig. 3).
Table 2
ROM bank selection
ROMBK2 ROMBK1 ROMBK0
0 to
32-kbyte
32 to
64-kbyte
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
common
common
common
common
common
reserved
reserved
reserved
Bank 0
Bank 1
Bank 2
Bank 3
Bank 4
reserved
reserved
reserved
handbook, full pagewidth
GSA073
7FFFH
0000H
COMMON
(32-kbyte)
Physical address
Range: 0 to 32-kbyte
FFFFH
8000H
BANK 2
(32-kbyte)
FFFFH
8000H
BANK 3
(32-kbyte)
FFFFH
8000H
BANK 4
(32-kbyte)
FFFFH
8000H
BANK 1
(32-kbyte)
FFFFH
8000H
BANK 0
(32-kbyte)
Physical address
Range: 96 to 128-kbyte
Physical address
Range: 128 to 160-kbyte
Physical address
Range: 160 to 192-kbyte
Physical address
Range: 64 to 96-kbyte
Range: 32 to 64-kbyte
Fig.3 Internal program memory.
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