Atmel AT89C51ID2 Data Sheet - Keil

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Table 11. Two-Wire Interface Controller SFRs Mnemonic Add Name 7 6 5 4 3 2 1 0 SSCON 93h Synchronous Serial control SSCR2 SSPE SSSTA SSSTO SSI SSAA SSCR1 SSCR0 SSCS 94h Synchronous Serial Status SSC4 SSC3 SSC2 SSC1 SSC0 0 0 0 SSDAT 95h Synchronous Serial Data SSD7 SSD6 SSD5 SSD4 SSD3 SSD2 SSD1 SSD0 SSADR 96h Synchronous Serial Address SSA7 SSA6 SSA5 SSA4 SSA3 SSA2 SSA1 SSGC Table 12. Keyboard Interface SFRs Mnemonic Add Name 7 6 5 4 3 2 1 0 KBLS 9Ch Keyboard Level Selector KBLS7 KBLS6 KBLS5 KBLS4 KBLS3 KBLS2 KBLS1 KBLS0 KBE 9Dh Keyboard Input Enable KBE7 KBE6 KBE5 KBE4 KBE3 KBE2 KBE1 KBE0 KBF 9Eh Keyboard Flag Register KBF7 KBF6 KBF5 KBF4 KBF3 KBF2 KBF1 KBF0 8 AT89C51ID2 4289A–8051–09/03
Table 13. SFR Mapping F8h F0h E8h E0h D8h D0h C8h C0h B8h B0h A8h A0h 98h 90h 88h 80h 4289A–8051–09/03 Table below shows all SFRs with their address and their reset value. Bit addressable Non Bit addressable AT89C51ID2 0/8 1/9 2/A 3/B 4/C 5/D 6/E 7/F PI2 XXXX XX11 B 0000 0000 P5 bit addressable 1111 1111 ACC 0000 0000 CCON 00X0 0000 PSW 0000 0000 T2CON 0000 0000 P4 1111 1111 IPL0 X000 000 P3 1111 1111 IEN0 0000 0000 P2 1111 1111 SCON 0000 0000 P1 1111 1111 TCON 0000 0000 P0 1111 1111 CH 0000 0000 CL 0000 0000 CMOD 00XX X000 FCON (1) XXXX 0000 T2MOD XXXX XX00 SADEN 0000 0000 IEN1 XXXX X000 SADDR 0000 0000 SBUF XXXX XXXX TMOD 0000 0000 SP 0000 0111 CCAP0H XXXX XXXX CCAP0L XXXX XXXX CCAPM0 X000 0000 EECON xxxx xx00 RCAP2L 0000 0000 IPL1 XXXX X000 AUXR1 XXXX X0X0 BRL 0000 0000 TL0 0000 0000 DPL 0000 0000 CCAP1H XXXX XXXX CCAP1L XXXX XXXX CCAPM1 X000 0000 RCAP2H 0000 0000 SPCON 0001 0100 IPH1 XXXX X111 BDRCON XXX0 0000 SSCON 0000 0000 TL1 0000 0000 DPH 0000 0000 CCAP2H XXXX XXXX CCAP2L XXXX XXXX CCAPM2 X000 0000 TL2 0000 0000 SPSTA 0000 0000 KBLS 0000 0000 SSCS 1111 1000 TH0 0000 0000 CCAP3H XXXX XXXX CCAP3L XXXX XXXX CCAPM3 X000 0000 TH2 0000 0000 SPDAT XXXX XXXX KBE 0000 0000 SSDAT 1111 1111 TH1 0000 0000 CKSEL XXXX XXX0 CCAP4H XXXX XXXX CCAP4L XXXX XXXX CCAPM4 X000 0000 WDTRST XXXX XXXX KBF 0000 0000 SSADR 1111 1110 AUXR XX00 1000 OSSCON XXXX X001 P5 byte Addressable 1111 1111 IPH0 X000 0000 CKCON1 XXXX XXX0 WDTPRG XXXX X000 CKRL 1111 1111 CKCON0 0000 0000 PCON 00X1 0000 0/8 1/9 2/A 3/B 4/C 5/D 6/E 7/F Reserved FFh F7h EFh E7h DFh D7h CFh C7h BFh B7h AFh A7h 9Fh 97h 8Fh 87h 9
Page 1 and 2: Features 80C52 Compatible - 8051 In
Page 3 and 4: Block Diagram Figure 1. Block Diagr
Page 5 and 6: Table 2. C51 Core SFRs 4289A-8051-0
Page 7: Table 8. PCA SFRs 4289A-8051-09/03
Page 11 and 12: 11 AT89C51ID2 4289A-8051-09/03 50 4
Page 13 and 14: Table 14. Pin Description (Continue
Page 15 and 16: Oscillators 4289A-8051-09/03 AT89C5
Page 17 and 18: 4289A-8051-09/03 Table 18. PCON Reg
Page 19 and 20: 4289A-8051-09/03 AT89C51ID2 It is a
Page 21 and 22: 4289A-8051-09/03 - FCLK CPU and FCL
Page 23 and 24: Figure 5. Mode Switching Waveforms
Page 25 and 26: 4289A-8051-09/03 Table 21. CKCON1 R
Page 27 and 28: 4289A-8051-09/03 Table 22. AUXR1 re
Page 29 and 30: Expanded RAM (XRAM) Figure 7. Inter
Page 31 and 32: Registers Table 23. AUXR Register A
Page 33 and 34: Reset Output 4289A-8051-09/03 AT89C
Page 35 and 36: Figure 12. Power Fail Detect Vcc 42
Page 37 and 38: Programmable Clock- Output 4289A-80
Page 39 and 40: Registers Table 24. T2CON Register
Page 41 and 42: Programmable Counter Array PCA 4289
Page 43 and 44: 4289A-8051-09/03 Table 26. CMOD Reg
Page 45 and 46: Figure 16. PCA Interrupt System 428
Page 47 and 48: 4289A-8051-09/03 Table 29. PCA Modu
Page 49 and 50: 4289A-8051-09/03 AT89C51ID2 PCA Cap
Page 51 and 52: Figure 19. PCA High Speed Output Mo
Page 53 and 54: 4289A-8051-09/03 AT89C51ID2 Serial
Page 55 and 56: 4289A-8051-09/03 AT89C51ID2 The SAD
Page 57 and 58: Internal Baud Rate Generator (BRG)
Page 59 and 60:
UART Registers Table 40. SADEN Regi
Page 61 and 62:
4289A-8051-09/03 Table 44. T2CON Re
Page 63 and 64:
4289A-8051-09/03 Table 46. BDRCON R
Page 65 and 66:
4289A-8051-09/03 AT89C51ID2 Registe
Page 67 and 68:
4289A-8051-09/03 Table 49. IPL0 Reg
Page 69 and 70:
4289A-8051-09/03 Table 51. IEN1 Reg
Page 71 and 72:
4289A-8051-09/03 Table 54. IPH1 Reg
Page 73 and 74:
Power Management 4289A-8051-09/03 A
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4289A-8051-09/03 AT89C51ID2 pins, t
Page 77 and 78:
AT89C51ID2 Keyboard Interface The A
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4289A-8051-09/03 Table 59. KBE Regi
Page 81 and 82:
4289A-8051-09/03 AT89C51ID2 2-wire
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4289A-8051-09/03 AT89C51ID2 Descrip
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4289A-8051-09/03 AT89C51ID2 When th
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Figure 33. Format and State in the
Page 89 and 90:
Page 91 and 92:
Page 93 and 94:
Table 67. Status in Slave Receiver
Page 95 and 96:
Table 68. Status in Slave Transmitt
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4289A-8051-09/03 Bit Number 1 SD1 A
Page 99 and 100:
Serial Port Interface (SPI) 4289A-8
Page 101 and 102:
Functional Description Figure 38 sh
Page 103 and 104:
Figure 40. Data Transmission Format
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4289A-8051-09/03 Figure 43. SPI Int
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Serial Peripheral DATa register (SP
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WDT During Power Down and Idle 4289
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4289A-8051-09/03 AT89C51ID2 Power-o
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4289A-8051-09/03 Figure 44. Recomme
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Registers Table 85. EECON Register
Page 117 and 118:
4289A-8051-09/03 AT89C51ID2 Flash M
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4289A-8051-09/03 Table 88. Program
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4289A-8051-09/03 Table 92. Program
Page 123 and 124:
Functional Description Figure 48. B
Page 125 and 126:
Boot Process Figure 49. Bootloader
Page 127 and 128:
Functional Description 4289A-8051-0
Page 129 and 130:
Flow Description 4289A-8051-09/03 A
Page 131 and 132:
Write / Program Commands This flow
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Display Data Description Figure 55.
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Example 4289A-8051-09/03 Read funct
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4289A-8051-09/03 Table 95. ISP Comm
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Table 96. API Call Summary (Continu
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T A = -40°C to +85°C; V SS = 0V;
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External Program Memory Characteris
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External Program Memory Read Cycle
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External Data Memory Write Cycle 42
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AC Testing Input/Output Waveforms F
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Ordering Information 4289A-8051-09/
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VQFP44 4289A-8051-09/03 AT89C51ID2
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PLCC68 4289A-8051-09/03 AT89C51ID2
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4289A-8051-09/03 AT89C51ID2 Pulse W
Page 159:
Atmel Corporation Atmel Operations
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Atmel AT89C51ID2 Data Sheet - Keil

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