参数资料
型号: 78058F
厂商: NEC Corp.
英文描述: common to 78K/0 Series
中文描述: 普通的78K / 0系列
文件页数: 20/129页
文件大小: 644K
代理商: 78058F
20
User's Manual U12326EJ4V0UM
CHAPTER 3 ADDRESSING
3.1 Instruction Address Addressing
An instruction address is determined by program counter (PC) contents. The PC contents are normally
incremented (+1 for each byte) automatically according to the number of bytes of an instruction to be fetched each
time another instruction is executed. When a branch instruction is executed, the branch destination information
is set to the PC and branched by the following addressing (for details of each instruction, refer to
CHAPTER 5
EXPLANATION OF INSTRUCTIONS
).
3.1.1 Relative addressing
[Function]
The value obtained by adding 8-bit immediate data (displacement value: jdisp8) of an instruction code to
the start address of the following instruction is transferred to the program counter (PC) and branched. The
displacement value is treated as signed two’s complement data (–128 to +127) and bit 7 becomes a sign
bit. In other words, in relative addressing, the value is relatively transferred to the range between –128 and
+127 from the start address of the following instruction.
This function is carried out when the “BR $addr16” instruction or a conditional branch instruction is executed.
[Illustration]
15
0
PC
15
0
S
15
0
PC
+
8
7
6
α
jdisp8
When S = 0,
α
indicates all bits "0".
When S = 1,
α
indicates all bits "1".
... PC is the start address of
the next instruction of
a BR instruction.
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相关代理商/技术参数
参数描述
78058FY 制造商:NEC 制造商全称:NEC 功能描述:Common to 78K/0 Series
78059-001 功能描述:集管和线壳 OCTOGONAL NUT RoHS:否 产品种类:1.0MM Rectangular Connectors 产品类型:Headers - Pin Strip 系列:DF50 触点类型:Pin (Male) 节距:1 mm 位置/触点数量:16 排数:1 安装风格:SMD/SMT 安装角:Right 端接类型:Solder 外壳材料:Liquid Crystal Polymer (LCP) 触点材料:Brass 触点电镀:Gold 制造商:Hirose Connector
78059-001LF 功能描述:高速/模块连接器 HPC OCTAGON #2-56 MOUNTING NUT RoHS:否 制造商:Molex 系列:iPass 产品类型: 排数: 列数: 位置/触点数量:38 安装角:Right 节距:0.8 mm 安装风格:Plug 端接类型:SMD/SMT 外壳材料:Thermoplastic 触点材料:High Performance Alloy (HPA) 触点电镀:Gold
78059-002 功能描述:高速/模块连接器 HPC OCTAGON #2-56-MOUNTING NUT RoHS:否 制造商:Molex 系列:iPass 产品类型: 排数: 列数: 位置/触点数量:38 安装角:Right 节距:0.8 mm 安装风格:Plug 端接类型:SMD/SMT 外壳材料:Thermoplastic 触点材料:High Performance Alloy (HPA) 触点电镀:Gold
78059-002LF 功能描述:高速/模块连接器 HPC OCTAGON #2-56 MOUNTING NUT RoHS:否 制造商:Molex 系列:iPass 产品类型: 排数: 列数: 位置/触点数量:38 安装角:Right 节距:0.8 mm 安装风格:Plug 端接类型:SMD/SMT 外壳材料:Thermoplastic 触点材料:High Performance Alloy (HPA) 触点电镀:Gold