Table 9.1 Port Functions (4) - Hitachi H8S/2215 Series Hardware Manual

Table 9.1 Port Functions (4)
Port Description
Port E General I/O port
also functioning
as address output
pins
Port F General I/O port
also functioning
as interrupt input
pins and bus
control I/O pins
Port G General I/O port
also functioning
as bus control
input pins and
interrupt Input
pins
Note: * On-chip USB cannot be used in mode 7.
Rev. 3.0, 10/02, page 220 of 686
Modes 4 and 5 Mode 6
8-bit bus mode: PE1
16-bit bus mode: D1
8-bit bus mode: PE0
16-bit bus mode: D0
When DDR = 0: PF7
When DD R= 1(after
reset): φ
AS
RD
HWR
8-bit bus mode:
PF3/ADTRG/IRQ3
16-bit bus mode:
LWR
When WAITE = 0
(after reset) : PF2
When WAITE = 1:
WAIT
When BRLE = 0
(after reset) : PF1
When BRLE = 1:
BACK
When BRLE = 0
(after reset) :
PF0/IRQ2
When BRLE = 1:
BACK/IRQ2
When DDR = 0: PG4
When DDR = 1:CS0
When DDR = 0: PG3
When DDR = 1: CS1
When DDR = 0: PG2
When DDR = 1: CS2
When DDR = 0: PG1/IRQ7
When DDR = 1: CS3/IRQ7
PG0
Input/Output
Mode 7* Type
PE1 Built-in input
pull-up MOS
PE0
When DDR=0: PF7 Schmitt
triggered input
When DDR = 1(after
(IRQ3, IRQ2)
reset): φ
PF6
PF5
PF4
PF3/ADTRG/IRQ3
PF2
PF1
PF0/IRQ2
PG4 Schmitt
triggered input
(IRQ7)
PG3
PG2
PG1/IRQ7