HD64F3687HV Datasheet, PDF (235/538 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series

TCNT value
GR value
Section 13 Timer Z
Counter cleared by GR compare match
H'0000
Time
STR
IMF
Figure 13.9 Periodic Counter Operation
2. TCNT count timing
A. Internal clock operation
A system clock (φ) or three types of clocks (φ/2, φ/4, or φ/8) that divides the system clock
can be selected by bits TPSC2 to TPSC0 in TCR.
Figure 13.10 illustrates this timing.
φ
Internal clock
TCNT input
TCNT
N-1
N
N+1
Figure 13.10 Count Timing at Internal Clock Operation
Rev.5.00 Nov. 02, 2005 Page 201 of 500
REJ09B0027-0500