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12
Timer Overview
12.1
Full Name and Abbreviation Description of Terms
Table 39 Full Name and Abbreviation Description of Terms
Full name in English
English abbreviation
Timer
TMR
Update
U
Request
R
Event
EV
Capture
C
Compare
C
Length
LEN
12.2
Timer Category and Main Difference
In this series of products, there are three types of timers: advanced timer,
general-purpose timer and basic timer (watchdog timer is described in other
chapters).
The advanced timer includes the functions of general-purpose timer and basic
timer. The advanced timer has four capture/compare channels, supports timing
function, input capture and output compare function, breaking and
complementary output function, and is a 16-bit timer that can count up/down.
The function of general-purpose timer is simpler than that of advanced timer. The
main differences are the total number of channels, the number of complementary
output channel groups and the breaking function.
The basic timer is a timer that can only realize timing function and has no
external interface.
The main differences of timers included in the products are shown in the table
below:
Table 40 Main Differences among Timers Included in the Products
Item
Specific
content/Cate
gory
Advanced
timer
General-purpose timer
Basic
timer
Name
—
TMR1
TMR3
TMR14
TMR15
TMR16
/17
TM
R6
TM
R7
Timeb
ase
unit
Counter
16 bits
16 bits
16 bits
16 bits
16 bits
16 bits
Prescaler
16 bits
16 bits
16 bits
16 bits
16 bits
16 bits
Count mode
Up
Down
Center-alig
ned
Up
Down
Center-alig
ned
Up
Down
Center-alig
ned
Up
Down
Center-alig
ned
Up
Up
Chann
el
Input channel
4
4
1
2
1
0
Capture/Com
pare channel
4
4
1
2
1
0
