HD64F2357F20V Datasheet, PDF (327/1049 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-chip Microcomputer H8S Family / H8S/2300 Series

9.7 Port 6
9.7.1 Overview
Port 6 is an 8-bit I/O port. Port 6 pins also function as interrupt input pins (IRQ0 to IRQ3), DMAC I/O pins (DREQ0,
TEND0, DREQ1, and TEND1), and bus control output pins (CS4 to CS7). The functions of pins P6₅ to P6₂ are the same in
all operating modes, while the functions of pins P6₇, P6₆, P6₁, and P6₀ change according to the operating mode. Pins P6₇ to
P6₄ are schmitt-triggered inputs. Figure 9-6 shows the port 6 pin configuration.
Port 6
Port 6 pins
P6₇/ IRQ3 / CS7
P6₆/ IRQ2 / CS6
P6₅/ IRQ1
P6₄/ IRQ0
P6₃/ TEND1
P6₂/ DREQ1
P6₁/ TEND0 / CS5
P6₀/ DREQ0 / CS4
Pin functions in mode 7*
P6₇ (I/O)/IRQ3 (input)
P6₆ (I/O)/IRQ2 (input)
P6₅ (I/O)/IRQ1 (input)
P6₄ (I/O)/IRQ0 (input)
P6₃ (I/O)/TEND1 (output)
P6₂ (I/O)/DREQ1 (input)
P6₁ (I/O)/TEND0 (output)
P6₀ (I/O)/DREQ0 (input)
Pin functions in modes 4 to 6*
P6₇ (input)/IRQ3 (input)/CS7 (output)
P6₆ (input)/IRQ2 (input)/CS6 (output)
P6₅ (I/O)/IRQ1 (input)
P6₄ (I/O)/IRQ0 (input)
P6₃ (I/O)/TEND1 (output)
P6₂ (I/O)/DREQ1 (input)
P6₁ (input)/TEND0 (output)/CS5 (output)
P6₀ (input)/DREQ0 (input)/CS4 (output)
Note: * Modes 6 and 7 are provided in the on-chip ROM version only.
Figure 9-6 Port 6 Pin Functions
9.7.2 Register Configuration
Table 9-11 shows the port 6 register configuration.
Table 9-11 Port 6 Registers
Name
Port 6 data direction register
Port 6 data register
Port 6 register
Note: * Lower 16 bits of the address.
Abbreviation
P6DDR
P6DR
PORT6
R/W Initial Value
W
H'00
R/W H'00
R
Undefined
Address*
H'FEB5
H'FF65
H'FF55
Rev.6.00 Oct.28.2004 page 297 of 1016
REJ09B0138-0600H