upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 140

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

140
This is an application example where the width set to CR010 (4 clocks in this example) is to be output from the
TO00 pin when the count value has been captured & cleared.
TM00 is cleared (to 0000H) at the rising edge detection of the TI000 pin and captured to CR000 at the falling
edge detection of the TI000 pin. The output level of the TO00 pin is inverted when TM00 is cleared (to 0000H)
because the rising edge of the TI000 pin has been detected or when the value of TM00 matches that of a
compare register (CR010).
When bit 1 (CRC001) of capture/compare control register 00 (CRC00) is 1, the count value of TM00 is captured
to CR000 in the phase reverse to that of the input signal of the TI000 pin, but the capture interrupt signal
(INTTM000) is not generated. However, the INTTM000 interrupt is generated when the valid edge of the TI010
pin is detected. Mask the INTTM000 signal when it is not used.
Capture & count clear input
Compare match interrupt
Figure 6-27. Timing Example of Clear & Start Mode Entered by TI000 Pin Valid Edge Input
(TMC003, TMC002)
Compare register
Capture interrupt
(TI000 pin input)
Capture register
TO00 pin output
(b) TOC00 = 13H, PRM00 = 10H, CRC00, = 03H, TMC00 = 0AH, CR010 = 0003H
TM00 register
Operable bits
(INTTM000)
(INTTM010)
(CR000)
(CR010)
(CR000: Capture Register, CR010: Compare Register) (2/2)
0003H
0000H
CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00
L
00
Preliminary User’s Manual U19014EJ1V0UD
0000H
0003H
4
10
M
M
N
4
N
4
S
S
4
P
P