ML63611 User’s Manual
Chapter 16 A/D Converter (ADC)
16 – 5
OPTION B (D): 1.5 V (3.0 V), With regulator
circuit for LCD bias
OPTION A (C): 1.5 V (3.0 V), Without regulator
circuit for LCD bias
Modes No.0 and No.7 in Table 16-1 measure the external clock which is input to the IN0 pin or the IN1 pin by
halting the operation of the RC oscillation circuit.
As shown in Table 16-1, no two oscillation circuits can operate simultaneously. This prevents interference to the
oscillation operation when two are operated simultaneously.
The relation between oscillation frequency (f
OSCCLK
), capacitance value (C), and resistance value (R) is expressed
by the following:
= t
OSCCLK
= k
OSCCLK
• C • R
where t
OSCCLK
is the period of the oscillation frequency, k
OSCCLK
is a proportionality constant and C•R is product of
C
S
or C
T
and R
S
or R
T
. The value of k
OSCCLK
varies slightly depending on V
DD
(power supply voltage), RI, C and
R and its standard values are listed in Table 16-2.
Table 16-2 Standard Value of k
OSCCLK
of RC Oscillation Circuit
V
DD
(V)
Rln (k
Ω
)
CSn, CTn (pF)
RSn, RTn (k
Ω
)
k
OSCCLK
(Typ.)
820
100
2.1
3
10
820
10
2.4
820
100
2.1
1.5
10
820
10
2.3
Note:
n = 0, 1, 0-1
1
f
OSCCLK
Содержание ML63611
Страница 9: ...Chapter 1 Overview...
Страница 33: ...Chapter 2 CPU and Memory Spaces...
Страница 42: ...Chapter 3 CPU Control Functions...
Страница 49: ...Chapter 4 Interrupt INT...
Страница 62: ...Chapter 5 Clock Generator Circuit OSC...
Страница 71: ...Chapter 6 Time Base Counter TBC...
Страница 75: ...Chapter 7 Timers TIMER...
Страница 99: ...Chapter 8 100 Hz Timer Counter 100HzTC...
Страница 103: ...Chapter 9 Watchdog Timer WDT...
Страница 108: ...Chapter 10 Ports INPUT I O PORT...
Страница 140: ...Chapter 11 Melody Driver MELODY...
Страница 152: ...Chapter 12 Serial Port SIO...
Страница 179: ...Chapter 13 LCD Driver LCD...
Страница 200: ...Chapter 14 Battery Low Detect Circuit BLD...
Страница 204: ...Chapter 15 Power Supply Circuit POWER...
Страница 215: ...Chapter 16 A D Converter ADC...
Страница 238: ...Appendixes...
Страница 271: ...ML63611 User s Manual First Edition May 2001 Second Edition June 2001 2001 Oki Electric Industry Co Ltd PEUL63611 02...