Toshiba TMP91C815F Data Book page 54

3.5 Port Functions
The TMP91C815 features 61 bit settings which relate to the various I/O ports.
As well as general-purpose I/O port functionality, the port pins also have I/O functions which relate to the
built-in CPU and internal I/Os. Table 3.5.1 lists the functions of each port pin. Table 3.5.2 lists I/O registers
and their specifications.
Port name Pin name
Port 1 P10 toP17
Port 2 P20 to P27
Port 5 P52
P53
P54
P55
P56
Port 6 P60
P61
P62
P63
P64
P65
P66
P67
Port 7 P70
P71
P72
P73
P74
P75
P76
P77
Port 8 P80 to P87
Port 9 P90 to P97
Port A PA0 to PA7
Port B PB0
PB1
PB2
PB3
PB4
PB5
PB6
Port C PC0
PC1
PC2
PC3
PC4
PC5
Port D PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
Table 3.5.2 I/O Registers and Specifications (1/2)
Table 3.5.1 Port functions
(R: PU= with programmable pull-up resistor / U= with pull-up resistor)
Number of
Direction
pins
8 I/O
8 Output
1 I/O
1 I/O
1 I/O
1 I/O
1 I/O
1 Output
1 Output
1 Output
1 Output
1 Output
1 Output
1 Output
1 Output
1 I/O
1 I/O
1 I/O
1 I/O
1 I/O
1 I/O
1 I/O
1 I/O
8 Input
8 Input
8 Output
1 I/O
1 I/O
1 I/O
1 I/O
1 I/O
1 I/O
1 I/O
1 I/O
1 I/O
1 I/O
1 I/O
1 I/O
1 I/O
1 Output
1 Output
1 Output
1 Output
1 Output
1 Output
1 Output
1 Output
91C815-51
Direction Pin name for built-in function
R
Setting unit
−
Bit D8 to D15
−
(Fixed) A16 to A23
PU Bit
HWR
PU Bit
WAIT
PU Bit
BUSRQ
PU Bit
BUSAK
PU Bit
R / W
−
(Fixed)
CS0
−
(Fixed)
CS1
−
(Fixed)
CS2 ,/CS2A
−
(Fixed)
CS3
−
(Fixed) EA24,/CS2B
−
(Fixed) EA25,/CS2C
−
(Fixed) /CS2D
−
(Fixed) /CS2E
−
Bit SCK,OPTRX0
PU Bit SO/SDA,OPTTX0
PU Bit SI/SCL
−
Bit /CS2F
−
Bit /CS2G
−
Bit /CSEXA
−
Bit MSK
−
Bit VEECLK
−
(Fixed)
AN0 to A N7, ADTRG (P83)
U (Fixed) KI0 to KI7
−
(Fixed) KO0 to KO7
−
Bit TA0IN
−
Bit TA1OUT
−
Bit TA3OUT
−
Bit INT0
−
Bit INT1
−
Bit INT2
−
Bit INT3
−
Bit TXD0
−
Bit RXD0
−
Bit
SCLK0/
−
Bit TXD1
−
Bit RXD1
−
Bit
SCLK1/ CTS1
−
(Fixed) D1BSCP
−
(Fixed) D2BLP
−
(Fixed) D3BFR
−
(Fixed) DLEBCD
−
(Fixed) DOFFB
−
(Fixed) SCOUT
−
(Fixed) ALARM,/MLDALM
−
(Fixed) MLDALM
TMP91C815
CTS 0
X: Don't care