r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 679

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

• PG5/BACK-A/TMS*
Notes: 1. Supported only in the 145-pin package.
• PG4/BREQO-A/CS4*
• Modes 1, 2, 4, and 7 (EXPE = 1)
Operating
mode
EXPE
BRLE
BACKS
PG5DDR
Pin
function
BRLE
BREQOE
BREQOS
CS4E
PG4DDR
Pin function
The pin function is switched as shown below according to the combination of the operating
mode, bit EXPE, bit BRLE in BCR of the bus controller, bit BACKS in PFCR4, and bit
PG5DDR.
The pin function is switched as shown below according to the combination of the operating
mode, bit EXPE, bit BRLE in BCR of the bus controller, bit BREQOE, bit BREQOS in
PFCR4, and bit PG4DDR.
2. TMS input when BSCANE pin = 1 in the 145-pin package.
input
BRLE = 1 and
PG5
BRLE = 0 or
BACKS = 1
0
input
PG4
0
output
PG5
1
1, 2, 4
0
1
1
/TCK*

output
PG4

0
1
BACKS = 0
BRLE = 1
2
BACK-A
output
and

output*
CS4

1
1
input
PG5
BREQOE = 0 or BREQOE =
0
TMS input*
input
PG4
0
TCK input*
1 and BREQOS = 1

0
0
output
PG5
output
1
Rev. 1.00 Sep. 19, 2008 Page 651 of 1270
PG4
2
1
3
input
PG5
BRLE = 1 and
output*
BRLE = 0 or
BACKS = 1
0
CS4
7

1
1
1
output
PG5
1
Section 10 I/O Ports
BREQO-A output
BREQO = 1 and
1
BREQOS = 0
REJ09B0466-0100
BACKS = 0
BRLE = 1


BACK-A
output
and
