Hitachi H8S/2670, Reference Manual

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5.7 Port 6
5.7.1 Overview
Port 6 is a 6-bit I/O port. Port 6 pins also function as 8-bit timer input/output pins (TMRI0,
TMCI0, TMO0, TMRI1, TMCI1, and TMO1), interrupt input pins (
IRQ13
to
IRQ8
), and DMAC
input/output pins (
DREQ0
,
TEND0
,
DACK0
,
DREQ1
,
TEND1
, and
DACK1
). Port 6 pin
functions are the same in all operating modes.
DMAC input/output pins can be switched to port 7 by setting the DMACS bit in PFCR2. When
pins P65 to P60 are used for IRQ input, they are Schmitt-trigger inputs.
Figure 5.6 shows the port 6 pin configuration.
P65 (I/O) / TMO1 (output) /
DACK1
(output) /
IRQ13
(input)
P64 (I/O) / TMO0 (output) /
DACK0
(output) /
IRQ12
(input)
P63 (I/O) / TMCI1 (input) /
TEND1
(output) /
IRQ11
(input)
P62 (I/O) / TMCI0 (input) /
TEND0
(output) /
IRQ10
(input)
P61 (I/O) / TMRI1 (input) /
DREQ1
(input) /
IRQ9
(input)
P60 (I/O) / TMRI0 (input) /
DREQ0
(input) /
IRQ8
(input)
Port 6
Port 6 pins
Figure 5.6 Port 6 Pin Functions
5.7.2 Register Configuration
Table 5.11 shows the port 6 register configuration.
Table 5.11 Port 6 Registers
Name Abbreviation R/W Initial Value Address *
Port 6 data direction register P6DDR W H'00 H'FE25
Port 6 data register P6DR R/W H'00 H'FF65
Port 6 register PORT6 R Undefined H'FF55
Port function control register 2 PFCR2 R/W H'0E H'FE34
Note:
*
Lower 16 bits of the address.