Toshiba TLCS-900/H1 Series Manual page 81

3.5.7 Port 7 (P70 to P76)
Port 7 is a 7-bit general-purpose I/O port (P70, P73 and P74 are used for output only).
Bits can be individually set as either inputs or outputs by control register P7CR and
function register P7FC.
In addition to functioning as a general-purpose I/O port, P70 to P76 pins can also
function as interface pins for external memory.
A reset initializes P70, P73 and P74 pins to output port mode, and P71, P72, P75 and P76
pin to input port mode.
AM1
0
0
1
1
, EA24, EA25
RD
Port read data
P7CR register
P7FC register
P7 register
,
NDRE NDWE
,
WRLL WRLU
Port read data
AM0 Function Setting after Reset is Released
0
1
0
1
P7FC register
P7 register
0
1
S
Selector
0
1
S
1
0
Selector
Figure 3.5.13 Port 7
92CH21-79
Don't use this setting
pin
RD
pin
RD
P70 output port
S
0
1
Selector
S
TMP92CH21
P70( )
RD
P73(EA24)
P74(EA25)
P71 ( , )
WRLL NDRE
P72 ( , )
WRLU NDWE
2009-06-19