Hitachi H8/3692 ユーザーズマニュアル

Rev. 1.0, 07/01, page 261 of 372

A/D conversion start delay time t

D

6

—

9

4

—

5

Input sampling time

t

SPL

—

31

—

—

15

—

A/D conversion time

t

CONV

131

—

134

69

—

70

Note:

All values represent the number of states.

A/D conversion can also be started by an external trigger input. When the TRGE  bit in ADCR is
set to 1, external trigger input is enabled at the 

ADTRG pin.  A falling edge at the ADTRG  input

pin sets the ADST bit in ADCSR to 1, starting A/D conversion.  Other operations, in both single
and scan modes, are the same as when the bit ADST has been set to 1 by software.  Figure 16-3
shows the timing.

ø

Internal trigger signal

ADST

A/D conversion