HD64F3028F25 Datasheet, PDF (897/925 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

SSOE
Software standby
External bus release
Hardware
standby
Reset
R
Q
D
PB3DDR
C
WPBD
PB3
Mode
6/7
Reset
R
Q
D
PB3DR
C
Bus controller
RAS₄ output enable
Area 4 DRAM connection
output enable
RAS₄ output
CS₄ output
CS₄ output enable
TPC
TPC output enable
WPB
Next data
Output trigger
8-bit timer
Output enable
Compare match output
RPB
WPBD: Write to PBDDR
WPB: Write to port B
RPB: Read port B
SSOE: Software standby output port enable
TMIO₃ input
DMAC
DREQ₁ input
Note: Area 4 DRAM connection enable, RAS₄ output enable, and CS₄ output enable are fixed at 0
in modes 6 and 7.
Figure C.11 (d) Port B Block Diagram (Pin PB₃)
Rev. 2.00, 09/03, page 865 of 890