UPD78F9418AGK-9EU Renesas Electronics America, UPD78F9418AGK-9EU Datasheet - Page 145

• Manufacturer Part Number: UPD78F9418AGK-9EU
• Manufacturer: Renesas Electronics America

Specifications of UPD78F9418AGK-9EU

• Lead Free Status / Rohs Status: Supplier Unconfirmed

10.3 Registers Controlling 8-Bit A/D Converter
ADM0
The following two registers are used to control the 8-bit A/D converter.
• A/D converter mode register 0 (ADM0)
• A/D input selection register 0 (ADS0)
(1)
Notes 1. The specifications of FR02, FR01, and FR00 must be such that the A/D conversion time is at least
Cautions 1. The result of conversion performed immediately after bit 7 (ADCS0) is set is undefined.
Remarks 1. f
Symbol
A/D converter mode register 0 (ADM0)
ADM0 specifies the conversion time for analog inputs. It also specifies whether to enable conversion.
ADM0 is set using a 1-bit or 8-bit memory manipulation instruction.
RESET input sets ADM0 to 00H.
2. These bit combinations must not be used, as the A/D conversion time will fall below 14 s.
ADCS0
ADCS0
FR02
Other than above
<7>
0
0
0
1
1
1
0
1
14 s.
2. The result of conversion performed after ADCS0 is cleared may be undefined (see 10.5 (5)
2. The parenthesized values apply to operation at f
Timing that makes the A/D conversion result undefined for details).
FR01
X
Conversion stopped
Conversion enabled
: Main system clock oscillation frequency
6
0
0
0
1
0
0
1
FR02 FR01 FR00
FR00
5
0
1
0
0
1
0
CHAPTER 10 8-BIT A/D CONVERTER ( PD789407A SUBSERIES)
Figure 10-2. Format of A/D Converter Mode Register 0
144/fx
120/fx
96/fx
72/fx
60/fx
48/fx
Setting prohibited
4
(28.8
(24 s)
(19.2 s)
(14.4 s)
(Setting prohibited
(Setting prohibited
3
s)
2
0
User’s Manual U13952EJ3V1UD
1
0
A/D conversion time selection
Note 2
Note 2
A/D conversion control
0
0
)
)
X
Address
= 5.0 MHz.
FF80H
After reset
Note 1
00H
R/W
R/W
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