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SH7018 Datasheet(PDF) 25 Page - Renesas Technology Corp |
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SH7018 Datasheet(HTML) 25 Page - Renesas Technology Corp |
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25 / 431 page  9 Table 1.2 Pin Functions (cont) Type Abbreviation I/O Name Function A/D converter AV CC Input Analog power supply Connect to V CC potential when using an analog power supply. AV SS Input Analog ground Connect to V ss potential when using an analog power supply. AN0 to AN7 Input Analog inputs Analog signal input terminals. I/O ports PA15, 14, 12 to 0 Input/ output General port General I/O port pins. I/O can be specified one bit at a time. PB9 to 0 Input/ output General port General I/O port pins. I/O can be specified one bit at a time. PC15 to 0 Input/ output General port General I/O port pins. I/O can be specified one bit at a time. PD7 to 0 Input/ output General port General I/O port pins. I/O can be specified one bit at a time. PE14 to 4, 2, 0 Input/ output General port General I/O port pins. I/O can be specified one bit at a time. PF7 to 0 Input General port General I/O port pins. Note: The following power-on/power-off order is recommended. 1. Powering on (1) Turn on the 5 V power (PV CC) first, then the 3 V power (VCC, PLLVCC, AVCC). (2) Pin states are undefined while only 5 V power is on, as reset input is invalid. 2. Powering off (1) Power off in the reverse order to powering on: turn off the 3 V power first, then the 5 V power. (2) Pin states are undefined while only 5 V power is being supplied. 3. Power-on/off interval To minimize the length of time during which pin states are undefined, the power-on/off interval should be kept as short as possible. Also, the system design should ensure that erroneous system operation will not result from pin states becoming undefined. |
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