HD6417615 Hitachi Semiconductor, HD6417615 Datasheet - Page 765

• Manufacturer Part Number: HD6417615
• Description: Hardware Manual
• Manufacturer: Hitachi Semiconductor

19.1
This chip has two ports, designated A and B. Port A is a 14-bit input/output port, and port B is a
16-bit input/output port. The port pins are multiplexed as general input/output and other functions.
(The function of multiplexed multiplex pins is selected by means of the pin function controller
(PFC).) Ports A and B are each provided with a data register for storing pin data.
19.2
Port A is an input/output port with the 14 pins shown in figure 19.1. Of the 14 pins, the CKPO pin
has no port data register bit, and is multiplexed as an internal clock pin.
Overview
Port A
Note: The fact that the WDTOVF pin is set to output mode after a reset
Port A
must be noted when it is to be used as a general I/O port (PA7).
Section 19 I/O Ports
PA13 (input/output) / SRCK0
PA12 (input/output) / SRS0
PA11 (input/output) / SRXD0
PA10 (input/output) / STCK0
PA9
PA8
WDTOVF (output)
PA6
PA5
PA4
CKPO (output)
PA2
PA1
PA0
Figure 19.1 Port A
(input/output) / STS0
(input/output) / STXD0
(input/output) / FTCI
(input/output) / FTI
(input/output) / FTOA
(input/output) / LNKSTA (input)
(input/output) / EXOUT (output)
(input/output)
/ PA7
/ FTOB
(input)
(input)
(input)
(input)
(input/output)
(output)
(input/output)
(input)
(input)
(output)
(output)
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