XC68HC705JB3 Motorola, XC68HC705JB3 Datasheet - Page 19

• Manufacturer Part Number: XC68HC705JB3
• Description: MICROCONTROLLER
• Manufacturer: Motorola

1.4.8 PB0-PB2, PB3-PB7
1.4.9 PC0-PC3
MC68HC05JB3
REV 1
PA0 to PA3 has external interrupt function (mask option) with schmitt trigger input
circuit, and PA4 to PA7 has 8mA current sink capability.
Port A can also be configured as the optical interface.
These seven I/O lines comprise Port B. The state of any pin is software program-
mable and is configured as an input during power-on or reset.
PB1 and PB2 are open-drain I/O lines with pull-up devices. PB0 (shared with
TCAP) is a push-pull I/O line with pull-down device.
PB1 and PB2 are also slow transition outputs, each has 25mA current sink capa-
bility at V
PB4-PB7 I/O lines are push-pull pins with pull-down devices, and are only avail-
able in the 28-pin package.
These four I/O lines comprise Port C. The state of any pin is software programma-
ble and all Port C lines are configured as inputs during power-on or reset.
PC0 to PC3 are push-pull pins with pull-down devices. PC0 is also shared with the
OCMP pin from the output compare function of the 16-bit timer.
Port C is only available in the 28-pin package.
OL
=0.5V.
GENERAL DESCRIPTION
November 5, 1998
GENERAL RELEASE SPECIFICATION
MOTOROLA
1-7