H8SSLASH2224 datasheet(520/1071 Pages) RENESAS

Il numero della parte	H8S/2224

Spiegazioni elettronici	16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series

PDF	1071 Pages

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Produttore elettronici	RENESAS [Renesas Technology Corp]

Homepage	http://www.renesas.com

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520 / 1071 page

Section 11 16-Bit Timer Pulse Unit (TPU)

Rev. 5.00 Aug 08, 2006 page 434 of 982

REJ09B0054-0500

Overlap

Phase

diffe-

rence

Phase

diffe-

rence

Overlap

TCLKA

(TCLKC)

TCLKB

(TCLKD)

Pulse width

Notes: Phase difference and overlap:

Pulse width:

1.5 states or more

2.5 states or more

Figure 11.45 Phase Difference, Overlap, and Pulse Width in Phase Counting Mode

11.10.3 Caution on Cycle Setting

When counter clearing by compare match is set, TCNT is cleared in the final state in which it

matches the TGR value (the point at which the count value matched by TCNT is updated).

Consequently, the actual counter frequency is given by the following formula:

f =

(N + 1)

Where f: Counter frequency

φ: Operating frequency

N: TGR set value

11.10.4 Contention between TCNT Write and Clear Operations

If the counter clearing signal is generated in the T2 state of a TCNT write cycle, TCNT clearing

takes precedence and the TCNT write is not performed. Figure 11.46 shows the timing in this

case.

H8S/2224 Scheda tecnica(PDF) 520 Page - Renesas Technology Corp