¨± CPUÀÇ ±¸¼º
1) 8Bit ONE CHIP MICRO-PROCESSOR 2) HMOS ±â¼ú ÀÌ¿ë, 5V
´ÜÀÏ Àü¿ø 3) 4096(4K)ByteÀÇ ³»ºÎ ÇÁ·Î±×·¥ ¸Þ¸ð¸®
(ROM) ³»Àå
- (1) 8051 : Mask ROM
(2) 8751 : EPROM ÇüÅ·ΠµÇ¾îÀÖ¾î »ç¿ëÀÚ°¡
ÇÁ·Î±×·¥À» ½á³Ö°í Áö¿ï ¼ö ÀÖ´Ù (3) 8031 : ÀÚü ROMÀÌ ¾ø¾î ¸ðµç ¸í·ÉÀ» ¿ÜºÎ ¸Þ¸ð¸®·ÎºÎÅÍ Á¦°ø ¹Þ´Â´Ù (4) 8951 : EEPROM
ÇüÅ·ΠµÇ¾îÀÖ¾î »ç¿ëÀÚ°¡ ÇÁ·Î±×·¥À» ½á³Ö°í Áö¿ï ¼ö ÀÖ´Ù. - 4) 128ByteÀÇ ³»ºÎ µ¥ÀÌÅÍ ¸Þ¸ð¸®
(RAM) ¿Í 128ByteÀÇ Æ¯¼ö ±â´É ·¹Áö½ºÅÍ ³»Àå
- (1) 4°³ÀÇ Register Bank
(2) 128bitÀÇ bit flag (Á÷Á¢
Addressing °¡´É) (3) 128ByteÀÇ Æ¯¼ö ±â´É ·¹Áö½ºÅÍ (SFR : Special Function Register)
- 5) ¿ÜºÎ ÇÁ·Î±×·¥ ¸Þ¸ð¸®¿Í µ¥ÀÌÅÍ ¸Þ¸ð¸®¸¦ °¢°¢ 64Kbyte±îÁö È®Àå °¡´É
- ¡Ø ´Ü ÇÁ·Î±×·¥ ¸Þ¸ð¸®ÀÇ ÇÏÀ§ 4Kbyte´Â ÀÚü ³»Àå
(1) ÇÁ·Î±×·¥ ¸Þ¸ð¸® : Read
Only - EA = 0 (ON) : ¿ÜºÎ ¸Þ¸ð¸®¸¸ »ç¿ë - EA = 1 (OFF) : ³»ºÎ ¸Þ¸ð¸® (4Kbyte :
0h¡0FFFh) + ¿ÜºÎ¸Þ¸ð¸® (60Kbyte : 1000¡FFFFh) (2) µ¥ÀÌÅÍ ¸Þ¸ð¸® : Read / Write -
64Kbyte±îÁö Á÷Á¢ Addressing °¡´É
- 6) 4°³ÀÇ 8bit ÀÔÃâ·Â Æ÷Æ® ³»Àå
7) 2°³ÀÇ 16bit ŸÀ̸Ó/Ä«¿îÅÍ 8)
µ¥ÀÌÅÍ Åë½Å¿ë ¼Û¼ö½Å Æ÷Æ® (½Ã¸®¾ó Æ÷Æ®) ³»Àå 9) 4°³ÀÇ ÀÎÅÍ·´Æ®
F8 |
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FF |
F0 |
B |
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F7 |
E8 |
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EF |
E0 |
ACC |
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E7 |
D8 |
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DF |
D0 |
PSW |
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D7 |
C8 |
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CF |
C0 |
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C7 |
B8 |
IP |
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BF |
B0 |
P3 |
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B7 |
A8 |
IE |
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AF |
A0 |
P2 |
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A7 |
98 |
SCON |
SBUF |
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9F |
90 |
P1 |
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97 |
88 |
TCON |
TMOD |
TL0 |
TL1 |
TH0 |
TH1 |
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8F |
80 |
P0 |
SP |
DPL |
DPH |
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PCON |
87 |
±â È£ |
¸í
Ī |
ÁÖ ¼Ò |
ACC |
Accmulator |
0E0h |
B |
B Register |
0F0h |
PSW |
Program Status Word |
0D0h |
SP |
Stack Pointer |
81h |
DPTR |
Data Pointer Register |
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DPL |
Low Byte |
82h |
DPH |
High Byte |
83h |
P0 |
Port 0 |
80h |
P1 |
Port 1 |
90h |
P2 |
Port 2 |
0A0h |
P3 |
Port 3 |
0B0h |
IP |
Interrupt Priority Control |
0B8h |
IE |
Interrupt Enable Control |
0A8h |
TMOD |
Timer/Counter Mode Control |
89h |
TCON |
Timer/Counter Control |
88h |
TH0 |
Timer/Counter 0 High Byte |
8Ch |
TL0 |
Timer/Counter 0 Low Byte |
8Ah |
TH1 |
Timer/Counter 1 High Byte |
8Dh |
TL1 |
Timer/Counter 1 Low Byte |
8Bh |
SCON |
Serial Control |
98h |
SBUF |
Serial Data Buffer |
99h |
PCON |
Power Control |
87h |
¢Â ACC(ACCmulator) : 8ºñÆ® ·¹Áö½ºÅÍ·Î »ê¼ú, ³í¸® ¿¬»êÀÇ Áß½ÉÀÌ µÈ´Ù.
¢Â B register : ¾îÅ¥¹Ä·¹ÀÌÅÍ¿Í Á¶ÇÕÇؼ ×, &, / µî¿¡ »ç¿ëµÈ´Ù. ¢Â DPTR(Data Pointer
Register) : 16ºñÆ® ±æÀ̸¦ °®°í ÀÖÀ¸¸ç, 8ºñÆ® ´ÜÀ§·Î »óÀ§(DPH), ÇÏÀ§(DPL)·Î ³ª´©¾îÁú ¼ö ÀÖ´Ù. ÀÌ ·¹Áö½ºÅÍ´Â ¿ÜºÎ µ¥ÀÌÅÍ
¸Þ¸ð¸®¿Í µ¥ÀÌÅÍ Àü¼Û½Ã ¾îµå·¹½º Æ÷ÀÎÅͷμ »ç¿ëµÇ¸ç, ÇÁ·Î±×·¥ ¸Þ¸ð¸® (ROM)¿¡¼ Á¤¼ö ¿¬»ê ȤÀº ¾îÅ¥¹°·¹ÀÌÅÍ¿Í Á¶ÇÕÇؼ Å×ÀÌºí ºÐ±â·Î
»ç¿ëµÈ´Ù. ¢Â PSW(Program Status Word) : 8ºñÆ® ·¹Áö½ºÅÍ·Î ¸¶ÀÌÅ©·Î ÇÁ·Î¼¼¼ÀÇ »óŸ¦ ³ªÅ¸³»°Å³ª, Á¶Á¤ÇÒ ¶§
»ç¿ëµÈ´Ù. ¢Â SP(Stack Pointer) : ½ºÅÃÀÇ À§Ä¡¸¦ °¡¸£Å°´Âµ¥ »ç¿ëµÇ¸ç, Ãʱ⠰ªÀº 07HÀÌ°í ½ÃÀÛÀº 08HºÎÅÍ µÈ´Ù. ³ª¸ÓÁö
·¹Áö½ºÅÍ ¹ðÅ©¸¦ »ç¿ëÇϱâ À§Çؼ´Â ÀÌ À§Ä¡¸¦ ´Ù¸¥ °÷ (¿¹¸¦µé¾î 30H¡7FH)À¸·Î ¿Å±â´Â °ÍÀÌ ÀϹÝÀûÀÌ´Ù.
¡Ø PSW (Program Status Word)
©ç CY : Carry Flag, µ¡¼À/»¬¼À ¸í·É¿¡¼ ÃÖ»óÀ§ ºñÆ®¿¡¼ ij¸®/¹Ù·Î¿ì°¡ »ý±â¸é
set ©è AC : Aux Carry Flag, µ«¼À/»¬¼À ¿¬»ê¿¡¼ 3ºñƮ°ÀÇ Ä³¸®/¹Ù·Î¿ì°¡ »ý±â¸é set ©é F0 :
General Flag ©ê RS1 : Register Bank Selection Flag 1 ©ë RS0 : Register
Bank Selection Flag 0
RS1 |
RS2 |
¼±ÅÃµÈ ¹ðÅ© |
0 |
0 |
¹ðÅ© 0 (¸®¼Â ÈÄ ÃʱⰪ) |
0 |
1 |
¹ðÅ© 1 |
1 |
0 |
¹ðÅ© 2 |
1 |
1 |
¹ðÅ©
3 |
©ì OV : Overflow Flag, ºÎÈ£ÀÖ´Â ¼öÀÇ µ«¼À/»¬¼À¿¡¼ 2ÀÇ º¸¼ö ¼öÄ¡ ¹üÀ§¸¦
³ÑÀ¸¸é set ©í ¡ª : ¹ÌÁöÁ¤ Flag ©î P : Parity Flag, ACCÀÇ ³»¿ëÁß 1ÀÇ °³¼ö°¡ Ȧ¼ö¸é set, ¦¼ö¸é
reset
¨² CPUÀÇ ±¸Á¶
ÇÉ À̸§ |
³»
¿ë |
RxD |
½Ã¸®¾ó ÀÔ·Â Æ÷Æ® |
TxD |
½Ã¸®¾ó Ãâ·Â Æ÷Æ® |
INT0 |
¿ÜºÎ ÀÎÅÍ·´Æ® 0 |
INT1 |
¿ÜºÎ ÀÎÅÍ·´Æ® 1 |
T0 |
ŸÀÌ¸Ó 0 ¿ÜºÎ ÀÔ·Â |
T1 |
ŸÀÌ¸Ó 1 ¿ÜºÎ ÀÔ·Â |
WR |
¿ÜºÎ µ¥ÀÌÅÍ ¸Þ¸ð¸® Ãâ·Â ½ºÆ®·Îºê (Strobe) |
RD |
¿ÜºÎ µ¥ÀÌÅÍ ¸Þ¸ð¸® ÀÔ·Â ½ºÆ®·Îºê |
RESET |
½Ã½ºÅÛ ¸®¼Â |
ALE/PROG |
Address Latch Enable : ¿ÜºÎ ±â¾ï ¼ÒÀÚ¸¦ ó¸®ÇÏ´Â µ¿¾È ÇÏÀ§ ¹øÁö
·¹Ä¡ |
PSEN |
Program Strobe Enable : ¿ÜºÎ ÇÁ·Î±×·¥ ¸Þ¸ð¸®¿¡ ´ëÇØ ¸®µåÇϱâ À§ÇÑ
½ÅÈ£ |
EA/Vpp |
External Access Enable : ¿ÜºÎ ÇÁ·Î±×·¥ ¸Þ¸ð¸®¸¦ »ç¿ë
°¡´É |
XTAL 1, 2 |
¹ÝÀüµÈ ¹ßÁø ÁõÆø±â¿¡ ´ëÇÑ ÀÔ·Â, Ãâ·Â |
P0¡P3 |
ÀÔÃâ·Â Æ÷Æ® |
A0¡A15 |
¾îµå·¹½º(ÁÖ¼Ò ÁöÁ¤) ¹ö½º |
D0¡D7 |
µ¥ÀÌÅÍ ¹ö½º |
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