Toshiba TLCS-90 Series Data Book page 83

TOSHIBA
TMP80C49AP /-6, TMP80C39AP /-6, TMP80C49AF /-6,
TMP80C49AT,TMP80C39AT
TIMING WAVEFORM
A. Instruction Fetch from External Program Memory
ALE
PSEN
DBO-7
B. Read from External Data Memory
ALE
.... ----tcc1
--------------------------~
DBO-7
INPUT DATA
..... _ _ _ _ _ IAD1
MCU48-73