SH7101 datasheet(412/560 Pages) RENESAS

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Section 13 Motor Management Timer (MMT)

Rev.1.00 Sep. 18, 2008 Page 378 of 522

REJ09B0069-0100

TCNT

TPDR

2Td

H'0000

PCIO pin

(toggle output)

Figure 13.7 Example of Toggle Output Waveform Synchronized with PWM Cycle

(13) Settings for A/D Conversion Start Requests

Requests to start A/D conversion can be set up to be issued when TCNT matches TPDR or 2Td.

When the start requests are set up for issue when TCNT matches TPDR, A/D conversion will start

at the center of the PWM pulse (the peak value of the TCNT counter). When the start requests are

set up for issue when TCNT matches 2Td, A/D conversion will start on the edge of the PWM

pulse (the minimum value of the TCNT counter).

Requests to start A/D conversion is enabled by setting the TTGE bit in the timer control register

(TCNR) to 1.

Table 13.3 shows the relationship between A/D conversion start timing and operating mode.

Table 13.3

Relationship between A/D Conversion Start Timing and Operating Mode

Operating Mode

A/D Conversion Start Timing

Operating mode 1 (transfer at peak)

A/D conversion start at trough

Operating mode 2 (transfer at trough)

A/D conversion start at peak

Operating mode 3 (transfer at peak and trough)

A/D conversion start at peak and trough

13.4.2

Output Protection Functions

Operating mode output has the following protection functions:

• Halting MMT output by external signal

The six-phase PWM output pins can be placed in the high-impedance state automatically by

inputting a specified external signal. There are three external signal input pins. For details, see

section 13.8, Port Output Enable (POE).

SH7101 Datasheet(PDF) 412 Page - Renesas Technology Corp