參數(shù)資料
型號: AT85C51SND3B1-7FTUL
廠商: Atmel
文件頁數(shù): 68/119頁
文件大?。?/td> 0K
描述: IC DECODER/ENCODER DGTL 100CBGA
標(biāo)準(zhǔn)包裝: 90
類型: 音頻編碼器/解碼器
應(yīng)用: 移動電話,手機(jī),視頻顯示器
電壓 - 電源,數(shù)字: 1.65 V ~ 3.6 V
安裝類型: 表面貼裝
封裝/外殼: 100-TFBGA
供應(yīng)商設(shè)備封裝: 100-CTBGA(9x9)
包裝: 托盤
52
AT85C51SND3B
7632D–MP3–01/07
The Figure 27 shows the memory segments configuration after bootstrap execution
along with an example of user memory segments configuration done during firmware
start-up. In this figure italicized address are the logical address within segments.
Figure 27. Memory Segment Configuration
Registers
Reset Value = 0000 0000b
0000h
FFFFh
FF00h
FEFFh
F000h
EFFFh
00h
FFh
256-byte DATA
000h
EFFh
3840-byte XDATA
60-Kbyte CODE
EFFFh
0000h
FFFFh
FF00h
FEFFh
E000h
DFFFh
00h
FFh
256-byte DATA
000h
1EFFh
7936-byte XDATA
56-Kbyte CODE
DFFFh
0000h
Default Configuration
User Configuration Example
MEMCBAX = 00h
MEMXBAX = 78h
MEMDBAX = 7Fh
MEMCSX = EFh
MEMXSX = 0Eh
MEMCBAX = 00h
MEMXBAX = 70h
MEMDBAX = 7Fh
MEMCSX = DFh
MEMXSX = 1Eh
Table 64. PSW Register
PSW (S:8Eh) – Program Status Word Register
7
6
5
4
3
2
1
0
CY
AC
F0
RS1
RS0
OV
F1
P
Bit
Number
Bit
Mnemonic Description
7
CY
Carry Flag
Carry out from bit 1 of ALU operands.
6
AC
Auxiliary Carry Flag
Carry out from bit 1 of addition operands.
5
F0
User Definable Flag 0
4-3
RS1:0
Register Bank Select Bits
Refer to Table 63 for bits description.
2
OV
Overflow Flag
Overflow set by arithmetic operations.
1
F1
User Definable Flag 1
0
P
Parity Bit
Set when ACC contains an odd number of 1’s.
Cleared when ACC contains an even number of 1’s.
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