LC87F2J32A Datasheet, PDF (25/30 Pages) Sanyo Semicon Device – 8-bit 1-chip Microcontroller

LC87F2J32A
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
SANYO-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)}
Nominal
Frequency
Vendor
Name
Oscillator Name
Circuit Constant
Operating
Voltage Range
C1
C2
Rf1
Rd1
[V]
[pF] [pF]
[Ω]
[Ω]
Oscillation
Stabilization Time
typ
max
[ms]
[ms]
12MHz
CSTCE12M0G52-R0
(10)
(10) Open 680
2.7 to 5.5
0.1
0.5
10MHz
CSTCE10M0G52-R0
CSTLS10M0G53-B0
(10) (10) Open 680
(15) (15) Open 680
2.2 to 5.5
2.2 to 5.5
0.1
0.5
0.1
0.5
8MHz
CSTCE8M00G52-R0
(10)
(10) Open 1.0k
MURATA CSTLS8M00G53-B0
(15) (15) Open 1.0k
2.2 to 5.5
2.2 to 5.5
0.1
0.5
0.1
0.5
6MHz
CSTCR6M00G53-R0
(15)
(15) Open 1.5k
CSTLS6M00G53-B0
(15) (15) Open 1.5k
2.2 to 5.5
2.2 to 5.5
0.1
0.5
0.1
0.5
4MHz
CSTCR4M00G53-R0
(15)
(15) Open 1.5k
CSTLS4M00G53-B0
(15) (15) Open 1.5k
1.8 to 5.5
1.8 to 5.5
0.2
0.6
0.2
0.6
Remarks
Internal
C1,C2
• _{CF oscillation low amplifier size selected (CFLAMP=1)}
Nominal
Frequency
Vendor
Name
Oscillator Name
Circuit Constant
Operating
Voltage Range
C1
C2
Rf1
Rd1
[V]
[pF]
[pF]
[Ω]
[Ω]
Oscillation
Stabilization Time
typ
max
[ms]
[ms]
Remarks
CSTCR4M00G53-R0
(15)
(15) Open 1.0k
1.9 to 5.5
0.2
0.6
Internal
4MHz
MURATA
CSTLS4M00G53-B0
(15) (15) Open 1.0k
1.9 to 5.5
0.2
0.6
C1,C2
The oscillation stabilization time refers to the time interval that is required for the oscillation to get stabilized after VDD
goes above the operating voltage lower limit (see Figure 4).
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