16-Bit Free-Run Timer - Fujitsu MB90390 Series Hardware Manual

CHAPTER 13 16-BIT I/O TIMER
13.3

16-bit Free-run Timer

The 16-bit free-run timer consists of a 16-bit up counter and a control status register.
The count values of this timer are used as the base timer for the output compares and
input captures.
• Eight counter clock frequencies are available.
• An interrupt can be generated upon a counter value overflow.
• The counter value can be initialized upon a match with compare register 0 (free-run
timer 0) or compare register 4 (free-run timer 1), depending on the mode.
• Two separate timers are available on MB90390 series.
■ 16-bit Free-run Timer Block Diagram
Bus
Note: The figure above is also valid for Timer 1
Timer 0 is connected to ICU0/ICU1 and OCU0/OCU1/OCU2/OCU3
Timer 1 is connected to ICU2/ICU3/ICU4/ICU5, OCU4/OCU5/OCU6/OCU7
196
Figure 13.3-1 16-bit Free-run Timer Block Diagram
Interrupt request
IVF IVFE STOP MODE CLR CLK2 CLK1
16-bit up counter
CLK0 Divider
Comparator 0 /1
Count value output
φ
FRCK
Clock
T15
to
T00