MC14060BCP View Datasheet(PDF) - Motorola => Freescale
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MC14060BCP Datasheet PDF : 6 Pages
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CLOCK 11
RESET
RS
10 OUT 1
Rtc
Ctc
9 OUT 2
[f
1
2.3 RtcCtc
if 1 kHz ≤ f ≤ 100 kHz
and 2Rtc < RS < 10Rtc
(f in Hz, R in ohms, C in farads)
The formula may vary for other frequencies. Recommended
maximum value for the resistors in 1 MΩ.
Figure 3. Oscillator Circuit Using RC Configuration
TYPICAL RC OSCILLATOR CHARACTERISTICS
8.0
VDD = 15 V
4.0
0
1.0 V
– 4.0
– 8.0
5.0 V
– 12
RTC = 56 kΩ
– 16 C = 1000 pF
– 55 – 25
RS = 0, f = 10.15 kHz @ VDD = 10, TA = 25°C
RS = 120 kΩ, f = 7.8 kHz @ VDD = 10 V, TA = 25°C
0
25
50
75
100 125
TA, AMBIENT TEMPERATURE (°C)
Figure 4. RC Oscillator Stability
CLOCK
11
RESET
18M
RO
CS
CT
10 OUT 1
9 OUT 2
Figure 6. Typical Crystal Oscillator Circuit
100
50
20
10
5
2
f AS A FUNCTION
OF C
1
(RTC = 56 kΩ)
0.5
(RS = 120 k)
VDD = 10 V
f AS A FUNCTION
OF RTC
(C = 1000 pF)
(RS ≈ 2RTC)
0.2
0.1
1.0 k
0.0001
10 k
100 k
RTC, RESISTANCE (OHMS)
0.001
0.01
C, CAPACITANCE (µF)
1.0 M
0.1
Figure 5. RC Oscillator Frequency as a
Function of RTC and C
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Characteristic
500 kHz 32 kHz
Circuit Circuit Unit
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Crystal Characteristics
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Resonant Frequency
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Equivalent Resistance, RS
500
32 kHz
1.0
6.2 kΩ
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ External Resistor/Capacitor Values
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ RO
47
750 kΩ
CT
82
82
pF
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ CS
20
20
pF
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Frequency Stability
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Frequency Changes as a Function
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ of VDD (TA = 25_C)
VDD Change from 5.0 V to 10V
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ VDD Change from 10 V to 15 V
Frequency Change as a Function
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ of Temperature (VDD = 10 V)
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ TA Change from – 55_Cto
+ 25_C Complete Oscillator*
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ TA Change from + 25_C to
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ +125_C Complete Oscillator*
+ 6.0
+ 2.0
+ 100
– 160
+ 2.0 ppm
+ 2.0 ppm
+ 120 ppm
– 560 ppm
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ * Complete oscillator includes crystal, capacitors, and resistors.
Figure 7. Typical Data for Crystal Oscillatgor Circuit
MC14060B
4
MOTOROLA CMOS LOGIC DATA
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