HD6412373R RENESAS [Renesas Technology Corp], HD6412373R Datasheet - Page 528

• Manufacturer Part Number: HD6412373R
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 10 I/O Ports
Notes: 1. Not supported by the H8S/2378 0.18μm F-ZTAT Group, H8S/2377, H8S/2375, and
10.1
Port 1 is an 8-bit I/O port that also has other functions. The port 1 has the following registers.
• Port 1 data direction register (P1DDR)
• Port 1 data register (P1DR)
• Port 1 register (PORT1)
10.1.1
The individual bits of P1DDR specify input or output for the pins of port 1.
Bit
7
6
5
4
3
2
1
0
Rev.7.00 Mar. 18, 2009 page 460 of 1136
REJ09B0109-0700
Port
Port
H
General I/O port
also functioning
as interrupt inputs
and bus control
I/Os
Bit Name
P10DDR
P17DDR
P16DDR
P15DDR
P14DDR
P13DDR
P12DDR
P11DDR
2. Not supported by the H8S/2375, H8S/2375R, H8S/2373, and H8S/2373R.
3. Only modes 1 and 2 are supported on ROM-less versions.
Description
Port 1
Port 1 Data Direction Register (P1DDR)
H8S/2373.
Initial Value
0
0
0
0
0
0
0
0
PH3/CS7/(IRQ7)/OE/CKE *
PH2/CS6/(IRQ6)
PH1/CS5/RAS5/SDRAMφ *
PH0/CS4/RAS4/WE *
Mode 1 *
3
Mode 2 *
R/W
W
W
W
W
W
W
W
W
3
1
Mode 4
Description
When a pin function is specified to a general
purpose I/O, setting this bit to 1 makes the
corresponding port 1 pin an output pin, while
clearing this bit to 0 makes the pin an input pin.
1
1
EXPE = 1
Mode 7
PH3/(IRQ7)
PH2/(IRQ6)
PH1/SDRAMφ *
PH0
EXPE = 0
1
Only PH2
and PH3
are
Schmitt-
triggered
inputs
when
used as
the IRQ
input
Output
Input/
Type