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AT89C51ED2-SMSUM Datasheet(PDF) 3 Page - ATMEL Corporation |
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AT89C51ED2-SMSUM Datasheet(HTML) 3 Page - ATMEL Corporation |
3 / 137 page 3 4235K–8051–05/08 AT89C51RD2/ED2 2. Block Diagram Figure 2-1. Block Diagram Timer 0 INT RAM 256x8 WR RD EA PSEN ALE/ XTALA2 XTALA1 EUART CPU Timer 1 Ctrl (2) (2) C51 CORE (2) (2) (2) (2) Port 0 Port 1Port 2 Port 3 XRAM 1792 x 8 IB-bus PCA PROG Watch -dog (2) (2) (1) (1): Alternate function of Port 1 (2): Alternate function of Port 3 (1) Timer2 (1) (1) Flash 64K x 8 Keyboard (1) Port4 (1) (1)(1)(1) BOOT 2K x 8 ROM Regulator POR / PFD Port 5 Parallel I/O Ports & External Bus SPI EEPROM* 2K x 8 (AT89C51ED2) |
Similar Part No. - AT89C51ED2-SMSUM |
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