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UPD7554AA Datasheet(PDF) 7 Page - NEC |
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UPD7554AA Datasheet(HTML) 7 Page - NEC |
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7 / 64 page  7 µPD7554A, 7554A(A) 1.3 PIN MASK OPTION Each pin is provided with the following mask options which can be selected for each bit according to the purpose: Pin Name Mask Options P00 No internally provided resistor Pull-down resistor internally provided Pull-up resistor internally provided P01 No internally provided resistor Pull-down resistor internally provided Pull-up resistor internally provided P02 No internally provided resistor Pull-down resistor internally provided Pull-up resistor internally provided P03 No internally provided resistor Pull-down resistor internally provided Pull-up resistor internally provided P80 N-channel open-drain output CMOS (push-pull) output P81 N-channel open-drain output CMOS (push-pull) output P82 N-channel open-drain output CMOS (push-pull) output P83/CL2 Used as CL2 or P83N-ch open-drain output pin. Used as P83 pin (push-pull output). P100 N-channel open-drain I/O Push-pull I/O N-channel open-drain + I/O with pull-up resistor internally provided P101 N-channel open-drain I/O Push-pull I/O N-channel open-drain + I/O with pull-up resistor internally provided P102 N-channel open-drain I/O Push-pull I/O N-channel open-drain + I/O with pull-up resistor internally provided P103 N-channel open-drain I/O Push-pull I/O N-channel open-drain + I/O with pull-up resistor internally provided P110 N-channel open-drain I/O Push-pull I/O N-channel open-drain + I/O with pull-up resistor internally provided P111 N-channel open-drain I/O Push-pull I/O N-channel open-drain + I/O with pull-up resistor internally provided P112 N-channel open-drain I/O Push-pull I/O N-channel open-drain + I/O with pull-up resistor internally provided P113 N-channel open-drain I/O Push-pull I/O N-channel open-drain + I/O with pull-up resistor internally provided System clockNote RC oscillation External clock RESET Pull-down resistor is not internally provided Pull-down resistor is internally provided Note When using RC oscillation, switch the P83/CL2 pin to the CL2 pin. There is no mask option for PROM products. For more information, see the µPD75P54 Data Sheet (IC-2830). 5 |
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