SAB80C537-N Infineon Technologies, SAB80C537-N Datasheet - Page 9

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SAB80C537-N

Manufacturer Part Number
SAB80C537-N
Description
IC MIRCROCONTROLLER 8BIT 84PLCC
Manufacturer
Infineon Technologies
Datasheet

Specifications of SAB80C537-N

Core Processor
8051
Core Size
8-Bit
Speed
12MHz
Connectivity
EBI/EMI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
56
Program Memory Type
ROMless
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 12x8b
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
84-LCC (J-Lead)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
Q1612975

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Pin Definitions and Functions (cont’d)
Symbol
P3.0 - P3.7
*
Semiconductor Group
I = Input
O = Output
P-LCC-84
21 - 28
Pin Number
P-MQFP-100-2
90 - 97
8
I/O
I/O
*)
Function
Port 3
is a bidirectional I/O port with internal
pull-up resistors. Port 3 pins that have
1 s written to them are pulled high by
the internal pull-up 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
pull-up resistors. Port 3 also contains
the interrupt, timer, serial port 0 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
– T
– 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
(asynchronous) or data input/output
(synchronous) of serial interface
output (asynchronous) or clock
output (synchronous) of serial
interface 0
gate control
gate control
latches the data byte from port 0 into
the external data memory
enables the external data
memory to port 0
D0 (P3.1): transmitter data
D0 (P3.0): receiver data input
SAB 80C517/80C537
IL,
in the DC