SAK-C504 Infineon Technologies AG, SAK-C504 Datasheet - Page 10

• Manufacturer Part Number: SAK-C504
• Description: 8-Bit Single-Chip Microcontroller
• Manufacturer: Infineon Technologies AG

Table 1
Symbol
P3.0 - P3.7 5, 7 - 13
Data Sheet
Pin Number
(P-MQFP-44)
5
7
8
9
10
11
12
13
Pin Definitions and Functions (cont’d)
I/O
I/O
1)
Function
Port 3
is an 8-bit bidirectional port. P3.0 (R D) and P3.1
(T D) operate as defined for the C501. P3.2 to P3.7
contain the external interrupt inputs, timer inputs,
and four of the analog inputs of the A/D converter.
Port 3 pins are assigned to be used as analog inputs
via the bits of SFR P3ANA. P3.6/WR can be
assigned as a third interrupt input.
The functions are assigned to the pins of port 3 as
follows:
P3.0 / RxD
P3.1 / TxD
P3.2 / AN4 / INT0 Analog input channel 4 /
P3.3 / AN5 / INT1 Analog input channel 5 /
P3.4 / AN6 / T0
P3.5 / AN7 / T1
P3.6 / WR / INT2 WR control output; latches the
P3.7 / RD
6
Receiver data input (asynch.) or
data input/output (synch.) of
serial interface
Transmitter data output
(asynch.) or clock output
(synch.) of serial interface
external interrupt 0 input /
Timer 0 gate control input
external interrupt 1 input /
Timer 1 gate control input
Analog input channel 6 / Timer 0
counter input
Analog input channel 7 / Timer 1
counter input
data byte from port 0 into the
external data memory /
external interrupt 2 input
RD control output; enables the
external data memory
2000-05
C504