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MC146805E2CP 데이터시트(PDF) 5 Page - InnovASIC, Inc |
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MC146805E2CP 데이터시트(HTML) 5 Page - InnovASIC, Inc |
5 / 33 page IA6805E2 29 August 2007 Microprocessor Unit As of Production Version 00 I/O Pin Functions R/W-n DDR I/O Pin Functions 00 The I/O pin is in input mode. Data is written into the output data latch. 01 Data is written into the output data latch and output to the I/O pin. 10 The state of the I/O pin is read. 11 the I/O pin is in an output mode. The output data latch is read. I/O Port Circuitry and Register Configuration: DATA DIRECTION REGISTER BIT I/O PIN OUTPUT LATCHED OUTPUT DATA BIT INPUT REG BIT INPUT I/O PIN TO AND FROM CPU DDA7 (DDB7) DDA1 (DDB1) DDA2 (DDB2) DDA3 (DDB3) DDA4 (DDB4) DDA5 (DDB5) DDA6 (DDB6) DDA0 (DDB0) DATA DIRECTION A(B) REGISTER PORT A(B) REGISTER 74 5 630 1 2 PA7 (PB7) PA6 (PB6) PA5 (PB5) PA4 (PB4) PA3 (PB3) PA2 (PB2) PA1 (PB1) PA0 (PB0) PIN $0004 ($0005) $0000 ($0001) Figure 2. PA0-PA7/PB0-PB7 (Input/Output Lines) Copyright © 2007 IA211081401-03 www.Innovasic.com Customer Support: Page 5 of 33 1-888-824-4184 © |
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