参数资料
型号: AT85C51SND3B1-7FTUL
厂商: Atmel
文件页数: 68/119页
文件大小: 0K
描述: IC DECODER/ENCODER DGTL 100CBGA
标准包装: 90
类型: 音频编码器/解码器
应用: 移动电话,手机,视频显示器
电压 - 电源,数字: 1.65 V ~ 3.6 V
安装类型: 表面贴装
封装/外壳: 100-TFBGA
供应商设备封装: 100-CTBGA(9x9)
包装: 托盘
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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