H8SSLASH2214 datasheet(462/936 Pages) RENESAS

Il numero della parte	H8S/2214

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

PDF	936 Pages

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Produttore elettronici	RENESAS [Renesas Technology Corp]

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Section 10 16-Bit Timer Pulse Unit (TPU)

Rev.4.00 Sep. 18, 2008 Page 402 of 872

REJ09B0189-0400

• When TGR is an input capture register

When input capture occurs, the value in TCNT is transferred to TGR and the value previously

held in the timer general register is transferred to the buffer register.

This operation is illustrated in figure 10.17.

Buffer register

Timer general

TCNT

Input capture

signal

Figure 10.17 Input Capture Buffer Operation

(1) Example of Buffer Operation Setting Procedure

Figure 10.18 shows an example of the buffer operation setting procedure.

Select TGR function

Buffer operation

Set buffer operation

Start count

[1]

[2]

[3]

[1] Designate TGR as an input capture register or

output compare register by means of TIOR.

[2] Designate TGR for buffer operation with bits

BFA and BFB in TMDR.

[3] Set the CST bit in TSTR to 1 to start the count

operation.

Figure 10.18 Example of Buffer Operation Setting Procedure

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