Datasheet

Section 10 I/O Ports
Rev. 3.00 Mar 17, 2006 page 514 of 926
REJ09B0283-0300
• PG5/BACK
The pin function is switched as shown below according to the operating mode, bit EXPE, bit
BRLE, and bit PG5DDR.
Operating
mode
1, 2, 4, 5, 6 3
*
, 7
EXPE — 0 1
BRLE 0 1 — 0 1
PG5DDR 0 1 — 0 1 0 1 —
Pin
function
PG5
input
PG5
output
BACK
output
PG5
input
PG5
output
PG5
input
PG5
output
BACK
output
Note: * Only in H8S/2678R Group.
• PG4/BREQO
The pin function is switched as shown below according to the operating mode, bit EXPE, bit
BRLE, bit BREQO, and bit PG4DDR.
Operating
mode
1, 2, 4, 5, 6
3
*
, 7
EXPE — 0 1
BRLE 0 1 — 0 1
BREQO — 0 1 — — 0 1
PG4DDR0101 — 010101 —
Pin
function
PG4
input
PG4
output
PG4
input
PG4
output
BREQO
output
PG4
input
PG4
output
PG4
input
PG4
output
PG4
input
PG4
output
BREQO
output
Note: * Only in H8S/2678R Group.