DF2211NP24V Renesas Technology / Hitachi Semiconductor, DF2211NP24V Datasheet - Page 598

• Manufacturer Part Number: DF2211NP24V
• Description: H8S/2200 Series, 2212 Group, USB, RTC, HSS TNP-64B; Vcc= 2.7 to 3.6 volts, Temp= -20 to 75 C; Package: PVQN0064LB-A
• Manufacturer: Renesas Technology / Hitachi Semiconductor

15.5.3
The A/D converter has a built-in sample-and-hold circuit. The A/D converter samples the analog
input when the A/D conversion start delay time (t
starts conversion. Figure 15.5 shows the A/D conversion timing. Tables 15.3 and 15.4 show the
A/D conversion time.
As indicated in figure 15.5, the A/D conversion time (t
time (t
total conversion time therefore varies within the ranges indicated in table 15.4.
In scan mode, the values given in table 15.4 apply to the first conversion time. The values given in
table 15.3 apply to the second and subsequent conversions.
Rev.7.00 Dec. 24, 2008 Page 544 of 698
REJ09B0074-0700
SPL
). The length of t
Input Sampling and A/D Conversion Time
Address
Write signal
Input sampling
timing
ADF
φ
Legend:
(1):
(2):
t
t
t
D
SPL
CONV
:
:
: A/D conversion time
ADCSR write cycle
ADCSR address
A/D conversion start delay
Input sampling time
D
varies depending on the timing of the write access to ADCSR. The
Figure 15.5 A/D Conversion Timing
(1)
(2)
t
D
t
SPL
D
) has passed after the ADST bit is set to 1, then
t
CONV
CONV
) includes t
D
and the input sampling