參數(shù)資料
型號： PPXY8300A6T1
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： Pressure Sensor
英文描述： DIFFERENTIAL, PEIZORESISTIVE PRESSURE SENSOR, RECTANGULAR, SURFACE MOUNT
封裝： SOIC-20
文件頁數(shù)： 113/162頁
文件大?。?/td> 4316K
代理商： PPXY8300A6T1
MPXY8300 Series
Sensors
54
Freescale Semiconductor
8.3.2
Relative Addressing Mode (REL)
Relative addressing mode is used to specify the destination location for branch instructions. A signed 8-bit offset value is located
in the memory location immediately following the opcode. During execution, if the branch condition is true, the signed offset is
sign-extended to a 16-bit value and is added to the current contents of the program counter, which causes program execution to
continue at the branch destination address.
8.3.3
Immediate Addressing Mode (IMM)
In immediate addressing mode, the operand needed to complete the instruction is included in the object code immediately
following the instruction opcode in memory. In the case of a 16-bit immediate operand, the high-order byte is located in the next
memory location after the opcode, and the low-order byte is located in the next memory location after that.
8.3.4
Direct Addressing Mode (DIR)
In direct addressing mode, the instruction includes the low-order eight bits of an address in the direct page (0x0000–0x00FF).
During execution a 16-bit address is formed by concatenating an implied 0x00 for the high-order half of the address and the direct
address from the instruction to get the 16-bit address where the desired operand is located. This is faster and more memory
efficient than specifying a complete 16-bit address for the operand.
8.3.5
Extended Addressing Mode (EXT)
In extended addressing mode, the full 16-bit address of the operand is located in the next two bytes of program memory after the
opcode (high byte first).
8.3.6
Indexed Addressing Mode
Indexed addressing mmode has seven variations including five that use the 16-bit H:X index register pair and two that use the
stack pointer as the base reference.
8.3.6.1
Indexed, No Offset (IX)
This variation of indexed addressing uses the 16-bit value in the H:X index register pair as the address of the operand needed
to complete the instruction.
8.3.6.2
Indexed, No Offset with Post Increment (IX+)
This variation of indexed addressing uses the 16-bit value in the H:X index register pair as the address of the operand needed
to complete the instruction. The index register pair is then incremented (H:X = H:X + 0x0001) after the operand has been fetched.
This addressing mode is only used for MOV and CBEQ instructions.
8.3.6.3
Indexed, 8-Bit Offset (IX1)
This variation of indexed addressing uses the 16-bit value in the H:X index register pair plus an unsigned 8-bit offset included in
the instruction as the address of the operand needed to complete the instruction.
8.3.6.4
Indexed, 8-Bit Offset with Post Increment (IX1+)
This variation of indexed addressing uses the 16-bit value in the H:X index register pair plus an unsigned 8-bit offset included in
the instruction as the address of the operand needed to complete the instruction. The index register pair is then incremented
(H:X = H:X + 0x0001) after the operand has been fetched. This addressing mode is used only for the CBEQ instruction.
8.3.6.5
Indexed, 16-Bit Offset (IX2)
This variation of indexed addressing uses the 16-bit value in the H:X index register pair plus a 16-bit offset included in the
instruction as the address of the operand needed to complete the instruction.
8.3.6.6
SP-Relative, 8-Bit Offset (SP1)
This variation of indexed addressing uses the 16-bit value in the stack pointer (SP) plus an unsigned 8-bit offset included in the
instruction as the address of the operand needed to complete the instruction.
8.3.6.7
SP-Relative, 16-Bit Offset (SP2)
This variation of indexed addressing uses the 16-bit value in the stack pointer (SP) plus a 16-bit offset included in the instruction
as the address of the operand needed to complete the instruction.
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相關代理商/技術參數(shù)
參數(shù)描述
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