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17. 16-bit PWM Timers (T16B)
17.1. Overview
T16B is a 16-bit PWM timer with comparator/capture functions. The features of T16B are listed below.
•
Counter block
16-bit up/down counter.
-
A clock source and a clock division ratio for generating the count clock are selectable in each
-
channel.
The count mode is configurable from combinations of up, down, or up/down count operations,
-
and one-shot operations (counting for one cycle configured) or repeat operations (counting
continuously until stopped via software).
Supports an event counter function using an external clock.
-
•
Comparator/capture block
Supports up to six comparator/capture circuits to be included per one channel.
-
The comparator compares the counter value with the values specified via software to generate
-
interrupt or DMA request signals, and a PWM waveform. (Can be used as an interval timer, PWM
waveform generator, and external event counter.)
The capture circuit captures counter values using external/software trigger signals and generates
-
interrupts or DMA requests. (Can be used to measure external event periods/cycles.)
Figure 17.1.1 shows the T16B configuration.
Item
Number of channels
Event counter function
Number of comparator/
capture circuits per channel
Timer generating signal
output
Capture signal input
Note:
In this chapter, 'n' refers to a channel number, and 'm' refers to an input/output pin number or a
comparator/capture circuit number in a channel.
S1C31D50 TECHNICAL MANUAL
(Rev. 1.00)
Table 17.1.1 T16B Channel Configuration of S1C31D50
2 channels (Ch.0 and Ch.1)
Ch.0: EXCL00 or EXCL01 pin input Ch.1: EXCL10 or EXCL11 pin input
4 systems (0 to 3)
Ch.0: TOUT00 to TOUT03 pin outputs (4 systems)
Ch.1: TOUT10 to TOUT13 pin outputs (4 systems)
Ch.0: CAP00 to CAP03 pin inputs (4 systems) Ch.1: CAP10 to CAP13 pin inputs (4
systems)
Seiko Epson Corporation
S1C31D50
17-1
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