Toshiba TLCS-90 Series Data Book page 84

TOSHIBA
TMP80C49AP./-6, TMP80C39AP /-6, TMP80C49AF /-6,
TMP80C49AT,TMP80C39AT
C. Write into External Data Memory
ALE
DBO-7
OUTPUT DATA
D. Timing of Port 2 during Expander Instruction Execution
ALE
'CAl
PORTl,2
PORT
1.2
DATA NEW PORT
1.2
DATA
PORT
20-23 PORT
20-23 DATA PCH
PORT
20-23pORT
20-23
DATA PCH
PROCi
MCU48-74