LC87FBH08A_16 Datasheet, PDF (27/32 Pages) ON Semiconductor – 8-bit Microcontroller

LC87FBH08A
Characteristics of a Sample Main System Clock Oscillation Circuit
Given below are the characteristics of a sample main system clock oscillation circuit that are measured using a Our
designated oscillation characteristics evaluation board and external components with circuit constant values with
which the oscillator vendor confirmed normal and stable oscillation.
Table 1 Characteristics of a Sample Main System Clock Oscillator Circuit with a Ceramic Oscillator
 CF oscillation normal amplifier size selected (CFLAMP=0)
MURATA
Nominal
Frequency
Type
Oscillator Name
Circuit Constant
C1
C2
Rf
Rd
[pF] [pF]
[]
[]
Operating
Voltage
Range
[V]
Oscillation
Stabilization Time
typ
max
[ms]
[ms]
12MHz
SMD
CSTCE12M0G52-R0
(10) (10) Open 680
2.6 to 5.5
0.02
0.3
SMD
CSTCE10M0G52-R0
(10) (10) Open 680
2.1 to 5.5
0.02
0.3
10MHz
LEAD
CSTLS10M0G53-B0
(15) (15) Open 680
CSTLS10M0G53095-B0 (15) (15) Open 680
2.4 to 5.5
2.0 to 5.5
0.02
0.3
0.01
0.15
SMD
CSTCE8M00G52-R0
(10) (10) Open 1k
2.1 to 5.5
0.02
0.3
8MHz
LEAD
CSTLS8M00G53-B0
(15) (15) Open 1k
CSTLS8M00G53095-B0 (15) (15) Open 1k
2.2 to 5.5
1.9 to 5.5
0.02
0.3
0.01
0.15
6MHz
SMD
LEAD
CSTCR6M00G53-R0
(15)
CSTCR6M00G53093-R0 (15)
CSTLS6M00G53-B0
(15)
CSTLS6M00G53095-B0 (15)
(15) Open 1.5k
(15) Open 1.5k
(15) Open 1.5k
(15) Open 1.5k
2.0 to 5.5
1.8 to 5.5
2.0 to 5.5
1.8 to 5.5
0.02
0.3
0.01
0.15
0.02
0.3
0.01
0.15
4MHz
SMD
LEAD
CSTCR4M00G53-R0
CSTLS4M00G53-B0
(15) (15) Open 1.5k
(15) (15) Open 1.5k
1.8 to 5.5
1.8 to 5.5
0.03
0.45
0.02
0.3
Remarks
Internal
C1, C2
 CF oscillation low amplifier size selected (CFLAMP=1)
MURATA
Nominal
Frequency
Type
Oscillator Name
Circuit Constant
C1
C2
Rf
Rd
[pF]
[pF]
[]
[]
Operating
Voltage
Range
[V]
Oscillation
Stabilization Time
typ
max
[ms]
[ms]
Remarks
12MHz
SMD
CSTCE12M0G52-R0
(10) (10) Open 470
3.9 to 5.5
0.03
0.45
SMD
CSTCE10M0G52-R0
(10) (10) Open 470
2.9 to 5.5
0.03
0.45
10MHz
LEAD
CSTLS10M0G53-B0
(15)
CSTLS10M0G53095-B0 (15)
(15) Open 470
(15) Open 470
3.6 to 5.5
2.7 to 5.5
0.03
0.45
0.02
0.3
SMD
CSTCE8M00G52-R0
(10) (10) Open 680
2.7 to 5.5
0.03
0.45
8MHz
6MHz
LEAD
SMD
LEAD
CSTLS8M00G53-B0
(15)
CSTLS8M00G53095-B0 (15)
CSTCR6M00G53-R0
(15)
CSTCR6M00G53095-R0 (15)
CSTLS6M00G53-B0
(15)
CSTLS6M00G53095-B0 (15)
(15) Open 680
(15) Open 680
(15) Open 1k
(15) Open 1k
(15) Open 1k
(15) Open 1k
3.0 to 5.5
2.5 to 5.5
2.6 to 5.5
2.2 to 5.5
2.7 to 5.5
2.2 to 5.5
0.03
0.45
0.01
0.15
0.03
0.45
0.02
0.3
0.03
0.45
0.01
0.15
Internal
C1, C2
4MHz
SMD
LEAD
CSTCR4M00G53-R0
(15) (15) Open 1k
CSTCR4M00G53095-R0 (15) (15) Open 1k
CSTLS4M00G53-B0
(15) (15) Open 1k
CSTLS4M00G53095-B0 (15) (15) Open 1k
2.1 to 5.5
1.8 to 5.5
2.1 to 5.5
1.8 to 5.5
0.04
0.6
0.02
0.3
0.02
0.3
0.01
0.15
The oscillation stabilization time refers to the time interval that is required for the oscillation to get stabilized in
follwing cases (see Figure 3).
 The time interval that is required for the oscillation to get stabilized after the instruction for starting the mainclock
oscillation circuit is executed.
 The time interval that is required for the oscillation to get stabilized after the HOLD mode is reset and oscillation is
started.
 The time interval that is required for the oscillation to get stabilized after the X’tal Hold mode, under the state which
the main clock oscillation is enabled, is reset and oscillation is started.
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