SAB80515 Datasheet, PDF (42/270 Pages) Siemens Semiconductor Group – 8-Bit Single-Chip Microcontroller Family

On-Chip Peripheral Components
7.1.3 Alternate Functions
Several pins of ports 1 and 3 are multifunctional. They are port pins and also serve to implement
special features as listed in table 7-1.
Table 7-1
Port
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
P3.0
P3.1
P3.2
P3.3
P3.4
P3.5
P3.6
P3.7
Pin
INT3/CC0
INT4/CC1
INT5/CC2
INT6/CC3
INT2
T2EX
CLKOUT
T2
RXD
TXD
INT0
INT1
T0
T1
WR
RD
Alternate Function
Ext. interrupt 3 input, compare 0 output, capture 0 input
Ext. interrupt 4 input, compare 1 output, capture 1 input
Ext. interrupt 5 input, compare 2 output, capture 2 input
Ext. interrupt 6 input, compare 3 output, capture 3 input
Ext. interrupt 2 input
Timer 2 external reload trigger input
System clock output
Timer 2 external reload trigger input
Serial port’s receiver data input (asynchronous) or data
input/output (synchronous)
Serial port’s transmitter data output (asynchronous) or
clock output (synchronous)
External interrupt 0 input, timer 0 gate control
External interrupt 1 input, timer 1 gate control
Timer 0 external counter input
Timer 1 external counter input
External data memory write strobe
External data memory read strobe
Semiconductor Group
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