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MB90333A Datasheet(PDF) 7 Page - Fujitsu Component Limited. |
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MB90333A Datasheet(HTML) 7 Page - Fujitsu Component Limited. |
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7 / 120 page  MB90330A Series 7 ■ PIN DESCRIPTION (Continued) Pin no. Pin name I/O Circuit type* Function 108, 107 X0, X1 A Terminals to connect the oscillator. When connecting an external clock, leave the X1 pin side unconnected. 13, 14 X0A, X1A A 32 kHz oscillation terminals. 90 RST F External reset input pin. 93 to 100 P00 to P07 H General purpose input/output port. The ports can be set to be added with a pull-up resistor (RD00 to RD07 = 1) by the pull-up resistor setting register (RDR0). (When the power output is set, it is invalid.) AD00 to AD07 Function as an I/O pin for the low-order external address and data bus in multiplex mode. D00 to D07 Function as an output pin for the low-order external data bus in non- multiplex mode. 101 to 104 P10 to P13 H General purpose input/output port. The ports can be set to be added with a pull-up resistor (RD10 to RD13 = 1) by the pull-up resistor setting register (RDR1). (When the power output is set, it is invalid.) AD08 to AD11 Function as an I/O pin for the high-order external address and data bus in multiplex mode. D08 to D11 Function as an output pin for the high-order external data bus in non- multiplex mode. 109 to 112 P14 to P17 H General purpose input/output port. The ports can be set to be added with a pull-up resistor (RD14 to RD17 = 1) by the pull-up resistor setting register (RDR1). (When the power output is set, it is invalid.) AD12 to D15 Function as an I/O pin for the high-order external address and data bus in multiplex mode. D12 to D15 Function as an output pin for the high-order external data bus in non- multiplex mode. 113 to 116 P20 to P23 D This is a general purpose I/O port. When the bits of external address output control register (HACR) are set to “1” in external bus mode, these pins function as general purpose I/O ports. A16 to A19 When the bits of external address output control register (HACR) are set to “0” in multiplex mode, these pins function as address high output pins. A16 to A19 When the bits of external address output control register (HACR) are set to “0” in non-multiplex mode, these pins function as address high output pins. |
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