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SST89E52RD2-40-I-QJF2 Datasheet(PDF) 19 Page - Silicon Storage Technology, Inc |
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SST89E52RD2-40-I-QJF2 Datasheet(HTML) 19 Page - Silicon Storage Technology, Inc |
19 / 81 page Data Sheet FlashFlex51 MCU SST89E52RD2/RD / SST89E54RD2/RD / SST89E58RD2/RD SST89V52RD2/RD / SST89V54RD2/RD / SST89V58RD2/RD 19 ©2006 Silicon Storage Technology, Inc. S71255-05-000 5/06 TABLE 3-9: Interface SFRs Symbol Description Direct Address Bit Address, Symbol, or Alternative Port Function RESET Value MSB LSB SBUF Serial Data Buffer 99H SBUF[7:0] Indeterminate SCON1 Serial Port Control 98H SM0/FE SM1 SM2 REN TB8 RB8 TI RI 00H SADDR Slave Address A9H SADDR[7:0] 00H SADEN Slave Address Mask B9H SADEN[7:0] 00H SPCR SPI Control Register D5H SPIE SPE DORD MSTR CPOL CPHA SPR1 SPR0 04H SPSR SPI Status Register AAH SPIF WCOL 00H SPDR SPI Data Register 86H SPDR[7:0] 00H P01 Port 0 80H P0[7:0] FFH P11 Port 1 90H - - - - - - T2EX T2 FFH P21 Port 2 A0H P2[7:0] FFH P31 Port 3 B0H RD# WR# T1 T0 INT1# INT0# TXD RXD FFH P42 Port 4 A5H 1 1 1 1 P4.3 P4.2 P4.1 P4.0 FFH T3-9.0 1255 1. Bit Addressable SFRs 2. P4 is similar to P1 and P3 ports |
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