Datasheet

General Description
Technical Data MC68HC908JB8•MC68HC08JB8•MC68HC08JT8 — Rev. 2.3
38 General Description Freescale Semiconductor
PTC0–PTC7
8-bit general-purpose I/O port. IN/OUT
V
REG
Each pin has programmable internal pullup to V
REG
when
configured as input.
IN
V
REG
PTD0–PTD7
8-bit general-purpose I/O port;
open-drain when configured as output.
IN
OUT
V
REG
V
REG
or V
DD
PTD0–PTD1 have configurable 25mA sink for infrared LED. OUT
V
REG
or V
DD
PTD2–PTD5 have configurable 10mA sink for LED. OUT
V
REG
or V
DD
PTE0/TCLK
PTE1/TCH0
PTE2/TCH1
PTE0–PTE2 are general-purpose I/O pins. IN/OUT
V
REG
PTE0–PTE2 have programmable internal pullup to V
REG
when configured as input or output.
IN/OUT
V
REG
PTE0 as TCLK of timer interface module. IN
V
REG
PTE1 as TCH0 of timer interface module. IN/OUT
V
REG
PTE2 as TCH1 of timer interface module. IN/OUT
V
REG
PTE3/D+
PTE4/D–
PTE3–PTE4 are general-purpose I/O pins;
open-drain when configured as output.
IN
OUT
V
DD
V
REG
or V
DD
PTE3–PTE4 have programmable internal pullup to V
DD
when configured as input.
IN
V
DD
PTE3 as D+ of USB module. IN/OUT
V
REG
PTE4 as D– of USB module. IN/OUT
V
REG
PTE4 as additional IRQ interrupt. IN
V
DD
Table 1-1. Summary of Pin Functions
PIN NAME PIN DESCRIPTION IN/OUT VOLTAGE LEVEL