h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 519
h8s-2649
Manufacturer Part Number
h8s-2649
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2649.pdf
(766 pages)
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15.3.3
The ADCR enables A/D conversion started by an external trigger signal.
Bit
7
6
5, 4
3
2
1, 0
Bit Name
TRGS1
TRGS0
CKS1
CKS0
A/D Control Register (ADCR)
Initial
Value
0
0
All 1
0
0
All 1
R/W
R/W
R/W
R/W
R/W
Reserved
These bits are always read as 1.
Reserved
These bits are always read as 1.
Description
Timer Trigger Select 0 and 1
Enable the start of A/D conversion by a trigger signal.
Bits TRGS0 and TRGS1 should be set while A/D
conversion is stopped (ADST = 0).
00: A/D conversion is started by software
01: A/D conversion is started by TPU conversion start
10: Setting prohibited
11: A/D conversion is started by the ADTRG pin
Clock Select 0 and 1
Specify the A/D conversion time. The conversion time
should be changed only when ADST = 0. Specify a
value within the range shown in table 23.7 in section 23,
Electrical Characteristics.
00: Conversion time = 530 states (max.)
01: Conversion time = 266 states (max.)
10: Conversion time = 134 states (max.)
11: Conversion time = 68 states (max.)
trigger
Rev. 2.00 Dec. 05, 2005 Page 481 of 724
Section 15 A/D Converter
REJ09B0200-0200
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