參數資料
型號: S-13L42AF
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 0.5 MHz, MICROCONTROLLER, PDSO22
封裝: 1.27 MM PITCH, SOP-22
文件頁數: 6/8頁
文件大?。?/td> 98K
代理商: S-13L42AF
CMOS 4-bit 1-chip MICROCOMPUTER
S-1342AF/13L42AF
6
Seiko Instruments Inc.
n Instructions
1. 1-byte and 2-byte instructions
Byte 1 is called “op code”, which indicates kinds of instruction.
Byte 2 is called “operand”, which indicates objects of instruction.
2. Ten types of addressing modes
1)
Absolute addressing mode: ABS
2)
Relative addressing mode: REL
3)
Zero page addressing mode: (ZPG)
4)
Register indirect addressing mode: (X)
5)
Post-increment register indirect addressing mode: (X+)
6)
Pre-decrement register indirect addressing mode: (-X)
7)
Register addressing mode: REG
8)
4-bit immediate addressing mode: IMM4
9)
8-bit immediate addressing mode: IMM8
10) Implied addressing mode: IMP
3. Number of instructions
Table 8
Basic
Including addressing modes
Transfer instruction
13
27
Arithmetic operation instruction
34
47
Logical operation instruction
7
13
Branch instruction
21
Shift instruction
2
4
CPU control instruction
2
Total
79
114
n Application Example (S-1342AF)
Figure 3
3.0 V
VDD
S-1342AF
P20
P
23
P30
P
33
VSS
Infrared light
emitting diode
CL1
CL2
RESET
RMO
Key matrix
8
×8
P00
P
03
P10
P
13
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