HD6437101 RENESAS [Renesas Technology Corp], HD6437101 Datasheet - Page 376

• Manufacturer Part Number: HD6437101
• Description: 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 11 A/D Converter
11.4.4
The A/D converter has an on-chip sample-and-hold circuit for each module. The A/D converter
samples the analog input when the A/D conversion start delay time (t
bit in ADCR is set to 1, then starts conversion. Figure 11.3 shows the A/D conversion timing.
Table 11.3 shows the A/D conversion time.
As indicated in figure 11.3, the A/D conversion time (t
(t
conversion time therefore varies within the ranges indicated in table 11.3.
In scan mode, the values given in table 11.3 apply to the first conversion time. The values given
in table 11.4 apply to the second and subsequent conversions.
Rev.1.00 Sep. 18, 2008 Page 342 of 522
REJ09B0069-0100
SPL
). The length of t
Pφ
Address
Internal write
signal
Analog input
sampling
signal
A/D converter
ADF
Input Sampling and A/D Conversion Time
(3 states)
A/D synchronization time
D
ADST write timing
A/D conversion start
varies depending on the timing of the write access to ADCR. The total
delay time(t
Write cycle
Idle state
Figure 11.3 A/D Conversion Timing
59 states)
(Up to
D
A/D conversion time (t
)
sampling time(t
Sample-and-hold
Analog input
SPL
CONV
CONV
)
A/D conversion
) includes t
)
D
D
) has passed after the ADST
and the input sampling time
End of A/D conversion