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W79E632A40FL Datasheet(PDF) 9 Page - Winbond |
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W79E632A40FL Datasheet(HTML) 9 Page - Winbond |
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9 / 78 page  W79E632A/W79L632A Publication Release Date: February 1, 2007 - 9 - Revision A6 Table 1. Special Function Register Location Table F8 EIP F0 B E8 EIE E0 ACC D8 WDCON PWMP PWM0 PWM1 PWMCON1 PWM2 PWM3 D0 PSW C8 T2CON T2MOD RCAP2L RCAP2H TL2 TH2 PWMCON2 PWM4 C0 PWM5 PMR STATUS TA B8 IP SADEN B0 P3 A8 IE SADDR ROMCON SFRAL SFRAH SFDFD SFRCN A0 P2 XRAMAH P4CSIN P4 98 SCON0 SBUF P42AL P42AH P43AL P43AH CHPCON 90 P1 P4CONA P4CONB P40AL P40AH P41AL P41AH 88 TCON TMOD TL0 TL1 TH0 TH1 CKCON 80 P0 SP DPL DPH PCON Note: The SFRs in the column with dark borders are bit-addressable. A brief description of the SFRs is shown follows. Port 0 Bit: 7 6 5 4 3 2 1 0 P0.7 P0.6 P0.5 P0.4 P0.3 P0.2 P0.1 P0.0 Mnemonic: P0 Address: 80h Port 0 is an open-drain bi-directional I/O port. This port also provides a multiplexed low order address/data bus during accesses to external memory. Besides, it has internal pull-up resisters enabled by setting P0UP of P4CSIN (A2H) to high. Stack Pointer Bit: 7 6 5 4 3 2 1 0 SP.7 SP.6 SP.5 SP.4 SP.3 SP.2 SP.1 SP.0 Mnemonic: SP Address: 81h The Stack Pointer stores the Scratchpad RAM address where the stack begins. In other words, it always points to the top of the stack. |
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