hpc36164 National Semiconductor Corporation, hpc36164 Datasheet - Page 13

• Manufacturer Part Number: hpc36164
• Description: High-performance Microcontroller With A/d
• Manufacturer: National Semiconductor Corporation

Connection Diagram
Ports A
The highly flexible A and B ports are similarly structured
The Port A (see Figure 11 ) consists of a data register and a
direction register Port B (see Figures 12 13 and 14 ) has an
alternate function register in addition to the data and direc-
tion registers All the control registers are read write regis-
ters
The associated direction registers allow the port pins to be
individually programmed as inputs or outputs Port pins se-
lected as inputs are placed in a TRI-STATE mode by reset-
ting corresponding bits in the direction register
B
Order Number HPC46064XXX F20 HPC46064XXX F30
HPC46004VF20 or HPC46004VF30
See NS Package Number VF80B
Top View
13
A write operation to a port pin configured as an input causes
the value to be written into the data register a read opera-
tion returns the value of the pin Writing to port pins config-
ured as outputs causes the pins to have the same value
reading the pins returns the value of the data register
Primary and secondary functions are multiplexed onto Port
B through the alternate function register (BFUN) The sec-
ondary functions are enabled by setting the corresponding
bits in the BFUN register
TL DD 9682 – 45