HD64336901G Renesas Technology, HD64336901G Datasheet - Page 194

• Manufacturer Part Number: HD64336901G
• Description: (HD64xxx Series) 16-BIT MICROCONTROLLER
• Manufacturer: Renesas Technology

Figure 12.6 shows another example of toggle output when TCNT operates as a periodic counter,
cleared by compare match A. Toggle output is selected for both compare match A and B.
The TCNT value can be captured into a general register (GRA, GRB, GRC, or GRD) when a
signal level changes at an input-capture pin (FTIOA, FTIOB, FTIOC, or FTIOD). Capture can
take place on the rising edge, falling edge, or both edges. By using the input-capture function, the
pulse width and periods can be measured. Figure 12.7 shows an example of input capture when
both edges of FTIOA and the falling edge of FTIOB are selected as capture edges. TCNT operates
as a free-running counter.
Rev. 1.00, 11/03, page 166 of 376
H'FFFF
GRA
GRB
H'0000
FTIOA
FTIOB
H'FFFF
GRA
GRB
H'0000
FTIOA
FTIOB
TCNT value
TCNT value
Figure 12.5 Toggle Output Example (TOA = 0, TOB = 1)
Figure 12.6 Toggle Output Example (TOA = 0, TOB = 1)
Counter cleared by compare match with GRA
Toggle output
Toggle output
Time
Toggle
output
Toggle
output
Time