C541U_99 Datasheet, PDF (56/192 Pages) Siemens Semiconductor Group – 8-BIT CMOS MICROCONTROLLER

On-Chip Peripheral Components
C541U
Ports 1 and 3 are provided for several alternate functions, as listed in table 6-1:
Table 6-1
Alternate Functions of Port 1 and 3
Port
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P3.1
P3.2
P3.3
P3.4
P3.5
P3.6
P3.7
Pin
T2
T2EX
SCLK
SRI
STO
SLS
DADD
INT0
INT1
T0
T1
WR
RD
Alternate Function
Input to counter 2
Capture-reload trigger of timer 2 / up down count
SSC master clock output, slave clock input
SSC serial data input
SSC serial data output
SSC slave select input
Device attached input of the USB module
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 momory read strobe
Semiconductor Group
6-11
1999-04-01