Section 26 I/O Ports
Rev. 0.50 May 18, 2006 Page 1329 of 1588
REJ09B0313-0050
Section 26 I/O Ports
This LSI has six ports: A to F.
All port pins are multiplexed with other pin functions. The functions of the multiplex pins are
selected by means of the pin function controller (PFC).
Each port is provided with data registers for storing the pin data and port registers for reading the
states of the pins.
26.1 Features
1. Total port number: 99 ports (I/O: 82 ports, Input: 16 ports, Output: 1 ports)
•
Port A: (Input: 8 ports)
•
Port B: (I/O: 4 ports, Input: 8 ports, Output: 1 port)
•
Port C: (I/O: 15 ports)
•
Port D: (I/O: 16 ports)
•
Port E: (I/O: 16 ports)
•
Port F: (I/O: 31 ports)
2. The following pins in this LSI have weak keeper circuits that prevent the pins from floating
into intermediate voltage levels.
•
Port B: PB8 to PB12
•
Port C: PC0 and PC14
•
Port D: PD0 to PD15
•
Port E: PE0 to PE15
•
Port F: PF0 to PF30
The I/O pins include weak keeper circuits that fix the input level high or low when the I/O pins are
not driven from outside. Generally in the CMOS products, input levels in unused input pins must
be fixed by way of external pull-up or pull-down resistors. However, the I/O pins having weak
keeper circuits in this LSI can eliminate these outer circuits and reduce parts number of the
system. If the pull-up or pull-down resistors become necessary to fix the pin level, use the resistor
of 4.7 k
Ω
or smaller.
Содержание Single-Chip Microcomputer SH7203
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Страница 668: ...Section 11 Multi Function Timer Pulse Unit 2 MTU2 Rev 0 50 May 18 2006 Page 638 of 1588 REJ09B0313 0050 ...
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Страница 796: ...Section 15 Serial Communication Interface with FIFO SCIF Rev 0 50 May 18 2006 Page 766 of 1588 REJ09B0313 0050 ...
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Страница 1226: ...Section 23 USB 2 0 Host Function Module USB Rev 0 50 May 18 2006 Page 1196 of 1588 REJ09B0313 0050 ...
Страница 1294: ...Section 24 LCD Controller LCDC Rev 0 50 May 18 2006 Page 1264 of 1588 REJ09B0313 0050 ...
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Страница 1598: ...Section 31 Electrical Characteristics Rev 0 50 May 18 2006 Page 1568 of 1588 REJ09B0313 0050 ...
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