SDA55XX Datasheet, PDF (17/230 Pages) Infineon Technologies AG – Preliminary & Confidential

SDA 55xx
Preliminary & Confidential
2
Package and Pinning
Package and Pinning
2.1
Pin Functions (ROM and ROMless Version)
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Type Additional reference
I/O
Available:
SDIP52,MQFP64,
MQFP100,PLCC84
Port 0 is a 8-bit open drain bidirectional I/O-port. Port 0 pins that
have 1 written to them float; in this state they can be used as
high impedance inputs (e.g. for software driven I ²C Bus
support).
33
3:0
Type Additional reference
I/O
Available:
SDIP52,MQFP64,
MQFP100,PLCC84
Port 1 is a 8-bit bidirectional multifunction I/O port with internal
pull-up resistors. Port 1 pins that have 1 written to them are
pulled high by the internal pull-up resistors and in that state can
be used as inputs.
The secondary functions of port 1 pins are:
Port bits P1.0 - P1.5 contain the 6 output channels of the 8-bit
pulse width modulation unit.
Port bits P1.6 - P1.7 contain the two output channels of the 14-
bit pulse width modulation unit.
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Type Additional reference
I
Available:
SDIP52,MQFP64,
MQFP100,PLCC84
Port 2 is a 4-bit input port without pull-up resistors.
Port 2 also works as analog input for the 4-channel-ADC.
Type Additional reference
I/O
Available:
SDIP52,MQFP64,
MQFP100,PLCC84
Port 3 is an 8-bit bidirectional I/O port with internal pull-up
resistors. Port 3 pins that have 1 written to them are pulled high
by the internal pull-up resistors and in that state can be used as
inputs.
To use the secondary functions of Port 3, the corresponding
output latch must be programmed to a one (1) for that function
to operate. The secondary functions are as follows:
P3.0: ODD/EVEN indicate output
P3.1: external extra interrupt 0 (INTX0)/UART(TXD)
P3.2: interrupt 0 input/timer 0 gate control input (INT0)
P3.3: interrupt 1 input/timer 1 gate control input (INT1)
P3.4: counter 0 input (T0)
P3.5: counter 1 input (T1) or In master mode HS or VCS output.
P3.7 external extra interrupt 0 (INTX1)/UART(RXD)
Semiconductor Group
17
User’s Manual July 99