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AT89S51 Datasheet(PDF) 6 Page - ATMEL Corporation |
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AT89S51 Datasheet(HTML) 6 Page - ATMEL Corporation |
6 / 31 page 6 2487D–MICRO–6/08 AT89S51 EA should be strapped to V CC for internal program executions. This pin also receives the 12-volt programming enable voltage (V PP) during Flash programming. 4.11 XTAL1 Input to the inverting oscillator amplifier and input to the internal clock operating circuit. 4.12 XTAL2 Output from the inverting oscillator amplifier 5. Special Function Registers A map of the on-chip memory area called the Special Function Register (SFR) space is shown in Table 5-1. Note that not all of the addresses are occupied, and unoccupied addresses may not be imple- mented on the chip. Read accesses to these addresses will in general return random data, and write accesses will have an indeterminate effect. |
Similar Part No. - AT89S51_08 |
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Similar Description - AT89S51_08 |
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