參數資料
型號: UPD70433R-12
廠商: NEC Corp.
元件分類: 16位微控制器
英文描述: V55PITM 16-BIT MICROPROCESSOR
中文描述: V55PITM 16位微處理器
文件頁數: 22/166頁
文件大?。?/td> 772K
代理商: UPD70433R-12
22
μ
PD70433
Extended Segment Register 8-Bit Fixed
...
Segment Start Address
...
Offset Value
...
Physical Address (24 Bits)
When a reset is performed, DS2 and DS3 of register bank 15 are initialized to 0000H.
These registers are mapped onto the register file space (in on-chip RAM). The address is the value obtained by adding the
offset for each register to (register bank number
×
32).
Table 3-4. Extended Segment Register Offsets
Register
Offset
DS2
00H
DS3
02H (Also used as vectored PC)
3.2.6
Special Function Registers (SFR)
The V55PI has a group of registers with the function of controlling on-chip peripheral hardware.
A number of registers are provided according to the type of cotrol for each peripheral hardware unit, and the actual
operation can be set using the individual bits in the registers. These registers are mapped onto the memory space, and
are read and written to using the same method as for ordinary memory (see
3.5.3 "Special Function Register Area"
).
Example
MOV
MOV
MOV
AW, 0FFE0H
DS1, AW
BL, DS1 : BYTE PTR [1EFH]; 0FFE0H : 1EFH (PRC register) Read
There are also two instructions, BTCLR and BTCLRL, which are only valid for special function registers. Of these,
BTCLRL is an instruction newly provided in the V25 or V35.
The BTCLR instruction is valid for registers in the upper 240 bytes (0FFF00H to 0FFFEFH) of the special function register
area, and the BTCLRL instruction is valid for registers in the lower 256 bytes (0FFE00H to 0FFEFFH).
x
x
x
x
0
0
H
0
0
x
x
x
x
H
x
x
x
x
x
x
H
+
相關PDF資料
PDF描述
UPD70433R-16 V55PITM 16-BIT MICROPROCESSOR
UPD70433GD-12-5BB V55PITM 16-BIT MICROPROCESSOR
UPD70433GD-16-5BB V55PITM 16-BIT MICROPROCESSOR
UPD70433GJ-12-3EB V55PITM 16-BIT MICROPROCESSOR
UPD70433GJ-16-3EB V55PITM 16-BIT MICROPROCESSOR
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