h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 739

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

17.2.3
ADCR is an 8-bit readable/writable register that enables or disables external triggering of A/D
conversion operations and sets the A/D conversion time.
ADCR is initialized to H'33 by a reset, and in standby mode or module stop mode.
Bits 7 and 6—Timer Trigger Select 1 and 0 (TRGS1, TRGS0): Select enabling or disabling of
the start of A/D conversion by a trigger signal. Only set bits TRGS1 and TRGS0 while conversion
is stopped (ADST = 0).
Bits 5, 4, 1, and 0—Reserved: These bits are reserved; they are always read as 1 and cannot be
modified.
Bits 3 and 2—Clock Select 1 and 0 (CKS1, CKS0): These bits select the A/D conversion time.
The conversion time should be changed only when ADST = 0.
Set bits CKS1 and CKS0 to give a conversion time of at least 10 µs.
Bit 7
TRGS1
0
1
Bit 3
CKS1
0
1
A/D Control Register (ADCR)
Bit 6
TRGS0
0
1
0
1
Bit 2
CKS0
0
1
0
1
Description
A/D conversion start by software is enabled
A/D conversion start by TPU conversion start trigger is enabled
Setting prohibited
A/D conversion start by external trigger pin (
Description
Conversion time = 530 states (max.)
Conversion time = 266 states (max.)
Conversion time = 134 states (max.)
Conversion time = 68 states (max.)
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Rev. 6.00 Feb 22, 2005 page 679 of 1484
A D T R G
Section 17 A/D Converter
) is enabled
REJ09B0103-0600
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¾
(Initial value)
(Initial value)
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