參數(shù)資料
型號(hào): PONE-000-01
廠商: Electronic Theatre Controls, Inc.
英文描述: The ideal device for simple nodes, such as switches, actuators and sensor
中文描述: 在簡(jiǎn)單的節(jié)點(diǎn),如交換機(jī),執(zhí)行器和傳感器的理想設(shè)備
文件頁(yè)數(shù): 46/56頁(yè)
文件大?。?/td> 432K
代理商: PONE-000-01
March 2000
CEWay
PL-One Data Sheet
D-CW-0100-04
Page 46 of 56
Data Transfers
Internal Memory
Data may be moved from the accumulator to any internal memory location, from any internal memory
location to the accumulator, and from any internal memory location to any SFR or other internal memory
location.
External Memory
The accumulator data may be moved to or from an external memory location in one of two addressing
modes. In 8bit addressing mode, the external location is addressed by either R0 or R1; in 16-bit
addressing mode the location is addressed by the DPTR.
Jump Instructions
Unconditional Jumps
Four kinds of unconditional jump instructions are available. Short jumps (SJMP) are relative jumps (limited
to -128 to +127 bytes). Long jumps (LJMP) are absolute 16-bit jumps, and Absolute jumps (AJMP) which
are absolute 13-bit jumps (i.e. within a 2k byte memory page). The last type is an indexed jump, JMP
@A+DPTR, which jumps to a location contained in the DPTR register, offset by value stored in the
accumulator.
Subroutine Calls and Returns
There are only two sorts of subroutine call, ACALL and LCALL, which are Absolute and Long as above.
Two return instructions are provided, RET and RETI, the latter being for interrupt service routines.
Conditional Jumps
Conditional jump instructions all use relative addressing, so are limited to the same -128 to +127 byte
range as above.
Boolean Instructions
The bit addressable registers in both direct and SFR space may be manipulated using boolean
instructions. There are available logical functions which use the carry flag and an addressable bit as the
operands, and each addressable bit may be set, cleared or tested in a jump instruction.
Flags
Instructions that affect flags generated by the ALU are as follows.
Instruction
Flag
OV
X
X
X
X
X
C
X
X
X
0
0
X
X
AC
X
X
X
ADD
ADDC
SUBB
MUL
DIV
DA
RRC
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