RL78/D1A User's Manual: Hardware - Renesas

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Under development Preliminary document Specifications in this document are tentative and subject to change. RL78/D1A CHAPTER 4 PORT FUNCTIONS 4.2.2 Port 1 48-pin products: P10 to P14 function as a 5-bit I/O port. 64-pin products: P10 to P15 and P17 function as a 7-bit I/O port. 80-pin products: P10 to P17 function as an 8-bit I/O port. 100-pin products: P10 to P17 function as an 8-bit I/O port. Port 1 is an 8-bit or a 7-bit, or a 5-bit I/O port with an output latch. Port 1 can be set to the input mode or output mode in 1-bit units using port mode register 1 (PM1). When the P10 to P17 pins are used as an input port, use of an on-chip pullup resistor can be specified in 1-bit units by pull-up resistor option register 1 (PU1). Input to the P10, P11, and P17 pins can be specified through a normal Schmitt3 input buffer or a Schmitt1 input buffer using port input mode register 1 (PIM1). These pins also function as serial interface data I/O, timer I/O, clock I/O, external interrupt request input and segment signal outputs for the LCD controller/driver. To use P10 to P17 as the port function, refer Table 4-3. Table 4-3. Setting of P10 to P17 Pins to port function P10 to P17 Pins LCDPF1 Alternate Register function port function Timer Serial P10 P11 P12 P13 P14 P15 P16 P17 R01UH0317EJ0004 Rev. 0.04 153 Feb. 22, 2013 PM1 Register Input port Digital I/O selection - - Input mode Output port 0 1 Output mode Input port Digital I/O selection - N/A Input mode Output port 0 PIM1 Register Output mode - Input port Digital I/O selection - - Input mode Output port 0 1 Output mode Input port Digital I/O selection - - Input mode Output port 0 1 Output mode Input port Digital I/O selection - N/A Input mode Output port 0 Output mode Input port Digital I/O selection - - Input mode Output port 0 1 Output mode Input port Digital I/O selection - N/A Input mode Output port 0 Output mode Input port Digital I/O selection - N/A Input mode Output port - - LCD segment output selection Reset signal generation sets port 1 to input mode. Figures 4-7 to 4-11 show block diagrams of port 1. 0 Output mode - POM Register Remarks 0 N/A Schmitt1 input 1 Schmitt3 input 0 N/A Schmitt1 input 1 Schmitt3 input N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 0 N/A Schmitt1 input 1 Schmitt3 input - - - - - LCD segment output
Under development Preliminary document Specifications in this document are tentative and subject to change. RL78/D1A CHAPTER 4 PORT FUNCTIONS Internal bus WRPU WRPIM RD WRPORT WRPM WRLCDPF Figure 4-7. Block Diagram of P10 PU1 PU10 PIM1 PIM10 Alternate function P1 Output latch (P10) PM1 PM10 Alternate function (TO10) Alternate function (LTxD1) Alternate function (SCK00) LCD controller/driver LCDPF1 PF10 Selector P1: Port register 1 PU1: Pull-up resistor option register 1 PM1: Port mode register 1 PIM1: Port Input mode register 1 LCDPF1: LCD port function registers 1 RD: Read signal WRxx: Write signal Schmitt1 Schmitt3 P10/LTxD1/ SCK00/TI10/ TO10/INTP4/ SEG31 Caution When using the alternate function TO10, set the port latch to 0. When using the alternate function LTxD1 or SCK00, set the port latch to 1. When using P10 as a general-purpose port, specify the port settings so that the alternate function outputs are fixed (Timer to 0 and Serial to 1). R01UH0317EJ0004 Rev. 0.04 154 Feb. 22, 2013 Selector EVDD P-ch
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User’s Manual 16 RL78/D1A 16-Bit
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NOTES FOR CMOS DEVICES (1) VOLTAGE
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Conventions Data significance: High
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CONTENTS CHAPTER 1 OUTLINE.........
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3.4.4 Short direct addressing .....
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6.8 Operation of Plural Channels of
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34.2 64-pin products 1276 R5F10CLDx
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RL78/D1A User’s Manual: Hardware
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