MC68HC908AZ60 Datasheet, PDF (298/480 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Programmable Interrupt Timer
Features
Features of the PIT include:
• Programmable PIT Clock Input
• Free-Running or Modulo Up-Count Operation
• PIT Counter Stop and Reset Bits
Functional Description
Figure 1 shows the structure of the PIT. The central component of the
PIT is the 16-bit PIT counter that can operate as a free-running counter
or a modulo up-counter. The counter provides the timing reference for
the interrupt. The PIT counter modulo registers, PMODH–PMODL,
control the modulo value of the counter. Software can read the counter
value at any time without affecting the counting sequence.
MC68HC908AZ60 — Rev 2.0
296
Programmable Interrupt Timer (PIT)
2-tim
MOTOROLA