MC-78F0712-KIT Renesas Electronics America, MC-78F0712-KIT Datasheet - Page 148
MC-78F0712-KIT
Manufacturer Part Number
MC-78F0712-KIT
Description
KIT REF SYSTEM 78K0 UPD78F0712
Manufacturer
Renesas Electronics America
Specifications of MC-78F0712-KIT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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(2) One-shot pulse output with external trigger
146
Caution 16-bit timer counter 00 starts operating as soon as a value other than 00 (operation stop mode) is
Remark N < M
A one-shot pulse can be output from the TO00 pin by setting 16-bit timer mode control register 00 (TMC00),
capture/compare control register 00 (CRC00), and 16-bit timer output control register 00 (TOC00) as shown in
Figure 7-33, and by using the valid edge of the TI000 pin as an external trigger.
The valid edge of the TI000 pin is specified by bits 4 and 5 (ES000, ES001) of prescaler mode register 00
(PRM00). The rising, falling, or both the rising and falling edges can be specified.
When the valid edge of the TI000 pin is detected, the 16-bit timer/event counter is cleared and started, and the
output becomes active at the count value set in advance to 16-bit timer capture/compare register 01 (CR01).
After that, the output becomes inactive at the count value set in advance to 16-bit timer capture/compare register
00 (CR00)
Note The case where N < M is described here. When N > M, the output becomes active with the CR00 register
Caution Do not input the external trigger again while the one-shot pulse is being output.
TO00 pin output
CR01 set value
CR00 set value
TM00 count
Count clock
and inactive with the CR01 register. Do not set N to M.
INTTM01
INTTM00
OSPT00
set to the TMC003 and TMC002 bits.
Note
To output the one-shot pulse again, wait until the current one-shot pulse output is completed.
Figure 7-32. Timing of One-Shot Pulse Output Operation with Software Trigger
.
Set TMC00 to 04H
(TM00 count starts)
0000H
M
N
0001H
CHAPTER 7 16-BIT TIMER/EVENT COUNTER 00
N
User’s Manual U17890EJ2V0UD
N + 1
M
N
0000H
N
1
M
N
N
M
1
M
M
N
M + 1 M + 2
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