M16C62P_06 Datasheet, PDF (82/421 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

M16C/62P Group (M16C/62P, M16C/62PT)
8. Bus
8.2.9 External Bus Status When Internal Area Accessed
Table 8.7 shows the External Bus Status When Internal Area Accessed.
Table 8.7 External Bus Status When Internal Area Accessed
Item
SFR Accessed
Internal ROM, RAM Accessed
A0 to A19
Address output
Maintain status before accessed
address of external area or SFR
D0 to D15
When Read High-impedance
High-impedance
When Write Output data
Undefined
RD, WR, WRL, WRH
RD, WR, WRL, WRH output ^{Output “H”}
BHE
BHE output
Maintain status before accessed status
of external area or SFR
CS0 to CS3
Output “H”
Output “H”
ALE
Output “L”
Output “L”
Rev.2.41 Jan 10, 2006 Page 67 of 390
REJ09B0185-0241