h8s-2628 Renesas Electronics Corporation., h8s-2628 Datasheet - Page 497

• Manufacturer Part Number: h8s-2628
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

17.4.3
The A/D converter includes the sample-and-hold circuit. The A/D converter samples the analog
input when the A/D conversion start delay time (t
then conversion is started. Figure 17.2 shows the A/D conversion timing. Table 17.3 shows the
A/D conversion time.
As shown in figure 17.2, the A/D conversion time (t
(t
the total conversion time varies within the range shown in table 17.3.
In scan mode, the values given in table 17.3 indicate the first conversion time. The second and
subsequent conversion time is shown in table 17.4. In both cases, set bits CKS1 and CKS0 in
ADCR within the range shown in table 23.7.
SPL
). The length of t
Input Sampling and A/D Conversion Time
Address
Write signal
Input sampling
timing
ADF
Legend:
(1):
(2):
t
t
t
D
SPL
CONV
:
:
D
: A/D conversion time
varies depending on the timing of the write access to ADCSR. Therefore,
ADCSR write cycle
ADCSR address
A/D conversion start delay
Input sampling time
Figure 17.2 A/D Conversion Timing
(1)
(2)
t
D
t
SPL
D
) has passed after the ADST bit is set to 1, and
CONV
t
CONV
) includes t
Rev. 3.00 Oct 04, 2005 page 457 of 598
D
and input sampling time
Section 17 A/D Converter
REJ09B0155-0300