參數(shù)資料
型號: uPSD3233
廠商: 意法半導(dǎo)體
英文描述: Flash Programmable System Device with 8032 Microcontroller Core(嵌入高速“8032微控制器核”的Flash型可編程系統(tǒng)器)
中文描述: 閃存可編程系統(tǒng)器件與8032微控制器內(nèi)核(嵌入高速“8032微控制器核”的閃存型可編程系統(tǒng)器)
文件頁數(shù): 17/164頁
文件大?。?/td> 1133K
代理商: UPSD3233
17/164
μ
PSD3200 FAMILY
DRAFT(Thursday 20 June 2002, 13:15).
cessed by certain instructions which carry a 3-bit
register specification within the opcode of the in-
struction. Instructions that access the registers
this way are code efficient, since this mode elimi-
nates anaddress byte. When the instruction is ex-
ecuted, one of four banks is selected at execution
time by the two bank select bits in the PSW.
Example:
mov PSW, #0001000B ; select Bank0
mov A, #30H
mov R1, A
(4) Register-specific addressing.
Some
structions are specific to a certain register. For ex-
ample, some instructions always operate on the
Accumulator, or Data Pointer, etc., so no address
byte is needed to point it. The opcode itself does
that.
(5) Immediate constants addressing.
The val-
ue of a constantcan follow theopcode in Program
memory.
Example:
mov A, #100H.
in-
Figure 12. Indexed Addressing
(6) Indexed addressing.
Only Program memory
can be accessed with indexed addressing, and it
can only be read. Thisaddressing mode is intend-
ed for reading look-up tables in Program memory.
A 16-bit base register (either DPTR or PC) points
to the base of the table,and the Accumulator is set
up with the table entry number. The address of the
table entry in Program memory is formed by add-
ing the Accumulator data to the base pointer.
Example:
movc A, @A+DPTR
Table 4. Arithmetic Instructions
Arithmetic Instructions
The arithmetic instructions is listed in Table 4. The
table indicates the addressing modes that can be
used with each instruction to access the <byte>
operand. Forexample, the ADD A, <byte> instruc-
tion can be written as:
ADD a, 7FH (direct addressing)
ADD A, @R0 (indirect addressing)
ADD a, R7 (register addressing)
ADD A, #127 (immediate constant)
Note that any byte in the internal Data Memory
space can be incremented without going through
the Accumulator.
One of theINC instructions operates on the 16-bit
Data Pointer.The Data Pointer is used to generate
16-bit addresses for external memory, so being
able to increment it in one 16-bit operations is
a useful feature.
AI06643
3Eh
Program Memory
ACC
3Ah
DPTR
1E73h
Mnemonic
Operation
Addressing Modes
Dir.
Ind.
Reg.
Imm
ADD A,<byte>
A = A + <byte>
X
X
X
X
ADDC A,<byte>
A = A + <byte> + C
X
X
X
X
SUBB A,<byte>
A = A – <byte> – C
X
X
X
X
INC
A = A + 1
Accumulator only
INC <byte>
<byte> = <byte> + 1
X
X
X
INC DPTR
DPTR = DPTR + 1
Data Pointer only
DEC
A = A – 1
Accumulator only
DEC <byte>
<byte> = <byte> – 1
X
X
X
MUL AB
B:A = B x A
Accumulator and B only
DIV AB
A = Int[ A / B ]
B = Mod[ A / B ]
Accumulator and B only
DA A
Decimal Adjust
Accumulator only
相關(guān)PDF資料
PDF描述
uPSD3234(中文) Flash Programmable System Device with 8032 Microcontroller Core(嵌入高速“8032微控制器核”的Flash型可編程系統(tǒng)器)
uPSD3212C(中文) Flash Programmable System Devices with 8032 Microcontroller Core and 16Kbit SRAM(帶8032微控制器內(nèi)核和16Kbit SRAM的FLASH可編程系統(tǒng)器件)
uPSD3254A(中文) Flash Programmable System Devices with 8032 Microcontroller Core(帶8032微控制器內(nèi)核的FLASH可編程系統(tǒng)器件)
uPSD3254BV(中文) Flash Programmable System Devices with 8032 Microcontroller Core(帶8032微控制器內(nèi)核的FLASH可編程系統(tǒng)器件)
UPSD3234A Flash Programmable System Devices with 8032 Microcontroller Core
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參數(shù)描述
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