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89C51RC2-IM Datasheet(PDF) 3 Page - ATMEL Corporation |
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89C51RC2-IM Datasheet(HTML) 3 Page - ATMEL Corporation |
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3 / 127 page  3 AT89C51RB2/RC2 4180C–8051–12/03 Block Diagram Figure 1. Block Diagram Notes: 1. Alternate function of Port 1. 2. Alternate function of Port 3. Timer 0 INT RAM 256x8 WR RD EA PSEN ALE/ XTAL2 XTAL1 EUART CPU Timer 1 Ctrl (2) (2) C51 CORE (2) (2) (2) (2) Port 0 Port 1 Port 2 Port 3 Parallel I/O Ports & Ext. Bus XRAM 1Kx8 IB-bus PCA PROG Watch Dog (2) (2) (1) (1) Timer2 (1) (1) Flash 32Kx8 or 16Kx8 Key Board ROM 2Kx8 Boot + BRG SPI (1) (1) (1) (1) |
Similar Part No. - 89C51RC2-IM |
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Similar Description - 89C51RC2-IM |
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