Rohm LAPIS SEMICONDUCTOR ML620Q503, User Manual

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ML620Q503/Q504 User's Manual
Chapter 24 RC Oscillation Type A/D Converter
FEUL620Q504 24-6
24.2.6 RC-ADC Mode Register (RADMOD)
Address: 0F808H
Access: R/W
Access size: 8/16 bits
Initial value: 0000H
7 6 5 4 3 2 1 0
RADMODL RACK2 RACK1 RACK0 RADI OM3 OM2 OM1 OM0
R/W R/W R/W R/W R/W R/W R/W R/W R/W
Initial value 0 0 0 0 0 0 0 0
15 14 13 12 11 10 9 8
RADMODH – – – – – – – –
R/W R/W R/W R/W R/W R/W R/W R/W R/W
Initial value 0 0 0 0 0 0 0 0
RADMOD is a special function register (SFR) used to select the A/D conversion mode of the RC-ADC.
Description of Bits
•
OM3-0 (bits 3 to 0)
The OM3–0 bits are used to select an oscillation mode for the RC oscillator circuits.
OM3 OM2 OM1 OM0 Description
0 0 0 0 IN0 pin external clock input mode (initial value)
0 0 0 1 RS0-CS0 oscillation mode
0 0 1 0 RT0-CS0 oscillation mode
0 0 1 1 RT0-1-CS0 oscillation mode
0 1 0 0 RS0-CT0 oscillation mode
0 1 0 1 RS1–CS1 oscillation mode
0 1 1 0 RT1–CS1 oscillation mode
0 1 1 1 IN1 pin external clock input mode
1 * * * Prohibited
•
RADI (bit 4)
The RADI bit is used to choose whether to generate the RC-ADC interrupt request signal (RADINT) by
an overflow at Counter A or Counter B.
RADI Description
0 Generates an interrupt request by Counter A overflow (initial value)
1 Generates an interrupt request by Counter B overflow