DF2211NP24V Renesas Technology / Hitachi Semiconductor, DF2211NP24V Datasheet - Page 594

• 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

15.3.3
The ADCR enables A/D conversion started by an external trigger signal.
Rev.7.00 Dec. 24, 2008 Page 540 of 698
REJ09B0074-0700
Bit
7
6
5, 4
3
2
1, 0
Bit Name Initial Value
TRGS1
TRGS0
—
CKS1
CKS0
—
A/D Control Register (ADCR)
0
0
All 1
0
0
All 1
R/W
R/W
R/W
—
R/W
R/W
—
00: Conversion time = 530 states (Max.)
01: Conversion time = 266 states (Max.)
10: Conversion time = 134 states (Max.)
11:
Description
Timer Trigger Select 1 and 0
Enables the start of A/D conversion by a trigger signal.
Only set bits TRGS1 and TRGS0 while conversion is
stopped (ADST = 0).
00: A/D conversion start by software
01: A/D conversion start by TPU
10: Setting prohibited
11: A/D conversion start by external trigger pin
Reserved
These bits are always read as 1 cannot be modified.
Clock Select 1 and 0
These bits specify the A/D conversion time. The
conversion time should be changed only when ADST =
0.
The conversion time setting should exceed the
conversion time shown in section 22.6, A/D Converter
Characteristics.
Reserved
These bits are always read as 1, and only 1 should be
written to them.
(ADTRG)
Conversion time = 68 states (Max.)