upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 136

• Manufacturer Part Number: upd78f0730
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

(2) Operation in clear & start mode entered by TI000 pin valid edge input
136
(CR000: compare register, CR010: capture register)
This is an application example where the output level of the TO00 pin is inverted when the count value has been
captured & cleared.
The count value is captured to CR010 and TM00 is cleared (to 0000H) when the valid edge of the TI000 pin is
detected. When the count value of TM00 is 0001H, a compare match interrupt signal (INTTM000) is generated,
and the output level of the TO00 pin is inverted.
Capture & count clear input
Compare match interrupt
Figure 6-25. Timing Example of Clear & Start Mode Entered by TI000 Pin Valid Edge Input
Figure 6-24. Block Diagram of Clear & Start Mode Entered by TI000 Pin Valid Edge Input
TI000 pin
Count clock
(TMC003, TMC002)
Compare register
Capture interrupt
(TI000 pin input)
Capture register
TO00 pin output
(a) TOC00 = 13H, PRM00 = 10H, CRC00, = 04H, TMC00 = 08H, CR000 = 0001H
TMC003, TMC002
TM00 register
Operable bits
(INTTM000)
(INTTM010)
Operable bits
(CR000)
(CR010)
(CR000: Compare Register, CR010: Capture Register) (1/2)
0000H
Capture signal
detector
(CR000: Compare Register, CR010: Capture Register)
Edge
CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00
00
Preliminary User’s Manual U19014EJ1V0UD
0001H
0000H
Capture register
Timer counter
(CR010)
(TM00)
M
Compare register
Clear
(CR000)
10
Match signal
M
N
N
S
controller
Output
S
P
Interrupt signal
(INTTM000)
Interrupt signal
(INTTM010)
TO00 pin
P
Q
Q