Toshiba TLCS-900/H1 Series Manual page 84

3.5.8 Port 8 (P80 to P87)
Ports 80 to 87 are 8-bit output ports. Resetting sets the output latch of P82 to "0" and the
output latches of P80 to P81, P83 to P87 to "1".
Port 8 can also be set to function as an interface pin for external memory using function
register P8FC.
Writing "1" in the corresponding bit of P8FC and P8FC2 enables the respective functions.
Resetting <P80F> to <P87F> of P8FC to "0" and P8FC2 to "0", sets all bits to output
ports.
AM1
0
0
1
1
Reset
Function
control 2
P8FC2 write
Function
P8FC write
Ouptut latch
P8 read
Port 82 Initial State
AM0 Function Setting after Reset is Released
0
1
0
1
contol
Selector
P8 write
"1", "1",
"1",
SDCS
, ,
CS0 CS1
Figure 3.5.16 Port 8
92CH21-82
Don't use this setting
"0" Output port
"0" Output port
"1" Output port
P80 (
P81 (
P82 (
P83 (
P84 (
P85 (
P86 (
P87 (
, "1", , , "1", "1",
SDCS ND 0 CE ND 1 CE
, , "1", , ,
CSZA WRUL WRUU
, , , ,
CS2 CS3 CSZB CSZC CSZD
TMP92CH21
)
CS0
, )
CS1 SDCS
, , )
CS2 CSZA SDCS
)
CS3
, , )
CSZB WRUL ND 0 CE
, , )
CSZC WRUU ND 1 CE
, )
CSZD SRULB
, )
CSZE SRUUB
,
SRULB SRUUB
,
CSZE
2009-06-19