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UPD720122 Datasheet(PDF) 9 Page - NEC |
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UPD720122 Datasheet(HTML) 9 Page - NEC |
9 / 82 page Data Sheet S16685EJ2V0DS 9 µPD720122 1. PIN INFORMATION (1/2) Pin Name I/O Buffer Type Active Level Function RESETB I 5 V tolerant Input Schmitt Low Asynchronous reset signaling XIN_CLK I 3.3 V Input System clock input or oscillator In XOUT O 3.3 V Output Oscillator out CSB I 5 V tolerant Input Low Chip select signal INTB_ALL O 5 V tolerant Output Low Interrupt request signal ALE I 5 V tolerant Input High Address strobe signal (Function2/3) A(7:1) I 5 V tolerant Input Address input (Function1) D(15:0) I/O 5 V tolerant I/O Data bus (I/O) (Function1) AD(7:0) I/O 5 V tolerant I/O Address/data multiplexed bus (I/O) (Function2) D0 I/O 5 V tolerant I/O Data bus (I/O) (Function3) AD(7:1) I/O 5 V tolerant I/O Address/data multiplexed bus (I/O) (Function3) D(15:8) I/O 5 V tolerant I/O Data bus (I/O) (Function3) WRB I 5 V tolerant Input Low Write command input RDB I 5 V tolerant Input Low Read command input INT0B O 5 V tolerant Output Low Interrupt request (INT Status 0) INT1B O 5 V tolerant Output Low Interrupt request (INT Status 1) INT2B O 5 V tolerant Output Low Interrupt request (INT Status 2) ACTIVE I 5 V tolerant Input DMA-related pins active level select(Function2/3) SCAN(1:0) I 3.3 V Input 50 k Ω Pull Down Chip test pin. M2 O 5 V tolerant Output Status output pin EP1_DRQB O 5 V tolerant Output Low DMA transfer request output pin of EP1 EP1_DACKB I 5 V tolerant Input Low DMA transfer enable input pin of EP1 EP1_RDB I 5 V tolerant Input Low DMA Read command input pin of EP1 EP1_TCB I 5 V tolerant Input Low DMA terminal count input pin of EP1 FM21 I 3.3 V Input NEC Electronics test pin EP2_DRQB O 5 V tolerant Output Low DMA transfer request output pin of EP2 EP2_DACKB I 5 V tolerant Input Low DMA transfer enable input pin of EP2 EP2_WRB I 5 V tolerant Input Low DMA Write command input pin of EP2 EP2_TCB I 5 V tolerant Input Low DMA terminal count input pin of EP2 LD(15:0) I/O 5 V tolerant I/O Data bus (I/O) pin for external local bus BUNRI I 5V torelant Input NEC Electronics test pin RREF A Analog Reference resistor RPU A USB pull-up control USB’s 1.5 k Ω pull-up resistor control RSDP O USB full speed D+ O USB’s full speed D+ signal DP I/O USB high speed D+ I/O USB’s high speed D+ signal DM I/O USB high speed D- I/O USB’s high speed D − signal |
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