MN101C115 Datasheet, PDF (5/170 Pages) Panasonic Semiconductor – Request for your special attention and precautions in using the technical information and semiconductors described in this book

s Manual Configuration
Each section of this manual consists of a title, summary, main text, supplemental information, precautions and
warnings. The layout and definition of each section are shown below.
Subtitle
Sub-subtitle
The smallest block
in this manual.
Main text
Key information
Important
information from
the text.
4-3 16-bit Timer Operation (timer 4)
4-3-1 Overview
Timer 4 is a 16-bit programmable counter that can be used as an event counter.
A signal with frequency of 1/2 of the timer 4 overflow signal can be output from the
TM4IO pin. An input capture function and added pulse PWM output function can
also be used.
Chapter 4 Timer Functions
s Timer Operation
Settings for timer operation are listed below.
(1) Set the TM4EN flag of the timer 4 mode register (TM4MD) to "0" so that the count
operation of timer 4 is stopped.
(2) Set the TM4CK2~0 flags of the TM4MD register to select fosc, fs/4, or fs/16 as the
clock source.
(3) Set the TM4PWM flag of the TM4MD register to "0" so that 16-bit timer operation is
selected.
C ock
TM EN
Wr te to registe s
TM OCH, TM OCL
Binary
0
05
06
07
08
09
00
counter
Figure 4-3-1 Binary Counter 4 (TM4BC) Count Timing
When servicing an interrupt reset
the timer 4 interrupt request flag
before operat ng timer 4
During a count operation be
careful if the value set n TM4OCH
and TM4OCL is smaller than the
value of binary counter 4 since
the count up operation will
continue until overflow occurs
If the TM4EN flag of the TM4MD register is changed
simultaneously with other bits, the switching operation may cause
binary counter 4 to be incremented.
If the value of TM4OCH and TM4OCL registers is overwritten while
timer 4 has stopped counting, binary counter 4 will be reset to
X'0000'.
16 bit Timer Operation (timer 4) ₈₃
Summary
Introduction to the
section.
Supplementary
information
Supplementary
information for the
main text. An
explanation of
terminology is also
included.
Precautions and
warnings
Precautions are
listed in case of lost
functionality or
damage.
Be sure to read.
How to Read This Manual–2