hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 445

• Manufacturer Part Number: hd64338023s
• Description: Renesas 8-bit Single-chip Microcomputer Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

Bit 7—Clock Select (CKS)
Bit 7 sets the A/D conversion speed.
Bit 7
CKS
0
1
Notes: 1. With the H8/38024, H8/38024S, and H8/38024F-ZTAT operation cannot be guaranteed
Bit 6—External Trigger Select (TRGE)
Bit 6 enables or disables the start of A/D conversion by external trigger input.
Bit 6
TRGE
0
1
Note: * The external trigger (
Bits 5 and 4—Reserved
Bits 5 and 4 are reserved; they are always read as 1, and cannot be modified.
2. H8/38124 Group only.
select register (IEGR) in section 3.3.2 for details.
if the conversion time is less than 12.4 µs. Make sure to select a setting that gives a
conversion time of 12.4 µs or more.
With the H8/38124 Group operation cannot be guaranteed if the conversion time is less
than 6.2 µs. Make sure to select a setting that gives a conversion time of 6.2 µs or
more.
Conversion Period
62/φ (initial value)
31/φ
Description
Disables start of A/D conversion by external trigger
Enables start of A/D conversion by rising or falling edge of external trigger at pin
A D T R G
*
A D T R G
) edge is selected by bit IEG4 of IEGR. See 1. IRQ edge
φ φ φ φ = 1 MHz
62 µs
31 µs
Rev. 7.00 Mar 10, 2005 page 403 of 652
φ φ φ φ = 5 MHz
12.4 µs
— *
Conversion Time
1
Section 12 A/D Converter
REJ09B0042-0700
φ φ φ φ = 10 MHz *
6.2 µs
— *
1
(initial value)
2