SAB80C535N Infineon Technologies, SAB80C535N Datasheet - Page 9

• Manufacturer Part Number: SAB80C535N
• Manufacturer: Infineon Technologies

Specifications of SAB80C535N

• Cpu Family: C500
• Device Core: 8051
• Device Core Size: 8b
• Frequency (max): 12MHz
• Interface Type: Serial
• Program Memory Type: ROMLess
• Program Memory Size: Not Required
• Total Internal Ram Size: 256Byte
• # I/os (max): 48
• Number Of Timers - General Purpose: 3
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• On-chip Adc: 8-chx8-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 68
• Package Type: PLCC
• Lead Free Status / Rohs Status: Supplier Unconfirmed

Pin Definitions and Functions (cont’d)
Symbol
P3.0-P3.7 21-28
Semiconductor Group
Pin
P-LCC-68
Pin
P-MQFP-80
15-22
Input (I)
Output (O)
I/O
8
Function
Port 3
is an 8-bit bidirectional I/O port with
internal pullup resistors. Port 3 pins that
have1's written to them are pulled high by
the internal pullup resistors, and in that
state can be used as inputs. As inputs,
port 3 pins being externally pulled low will
source current (I
characteristics) because of the internal
pullup resistors. Port 3 also contains the
interrupt, timer, serial port and external
memory strobe pins that are used by
various options. The output latch
corresponding to a secondary function
must be programmed to a one (1) for that
function to operate. The secondary
functions are assigned to the pins of port
3, as follows:
– R D (P3.0): serial port's receiver data
– T D (P3.1): serial port's transmitter data
– INT0 (P3.2): interrupt 0 input/timer 0
– INT1 (P3.3): interrupt 1 input/timer 1
– T0 (P3.4): counter 0 input
– T1 (P3.5): counter 1 input
– WR (P3.6): the write control signal
– RD (P3.7): the read control signal
input (asynchronous) or data input/
output (synchronous)
(asynchronous) or clock output
(synchronous)
gate control input
gate control input
latches the data byte from port 0 into the
external data memory
enables the external data memory to
port 0
output
SAB 80C515/80C535
IL
, in the DC