h8s-2628 Renesas Electronics Corporation., h8s-2628 Datasheet - Page 495

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

17.3.3
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
Description
Timer Trigger Select 1 and 0
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
10: Start of A/D conversion by 8-bit timer
11: A/D conversion is started by the
Reserved
These bits are always read as 1.
Clock Select 1 and 0
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.
00: Conversion time = 530 states (max.)
01: Conversion time = 266 states (max.)
10: Conversion time = 134 states (max.)
11: Conversion time = 68 states (max.)
Reserved
These bits are always read as 1.
start trigger
conversion start trigger is allowed
Rev. 3.00 Oct 04, 2005 page 455 of 598
Section 17 A/D Converter
REJ09B0155-0300
A D T R G
pin