LC87FBL08A Datasheet, PDF (15/28 Pages) Sanyo Semicon Device – 8K-byte FROM and 256-byte RAM integrated 8-bit 1-chip Microcontroller

LC87FBL08A
Continued from preceding page.
Parameter
Oscillation
frequency
range
(Note 2-2)
Symbol
FmCF(1)
FmCF(2)
Pin/Remarks
CF1, CF2
CF1, CF2
Conditions
12MHz ceramic oscillation.
See Fig. 1.
10MHz ceramic oscillation.
See Fig. 1.
VDD[V]
Specification
min
typ
max
unit
2.7 to 5.5
12
2.7 to 5.5
10
FmCF(3)
CF1, CF2
4MHz ceramic oscillation.
CF oscillation normal amplifier size selected. 2.7 to 5.5
4
(CFLAMP=0) See Fig. 1.
4MHz ceramic oscillation.
CF oscillation low amplifier size
selected. (CFLAMP=1)
See Fig. 1.
2.7 to 5.5
MHz
4
FmMRC(1)
Frequency variable RC oscillation.
2.7 to 5.5
7.76
8.0
8.24
(Note 2-3)
FmMRC(2)
Frequency variable RC oscillation.
• Ta=-10 to +85°C
2.7 to 5.5
7.80
8.0
8.20
(Note 2-3)
FmRC
Internal medium-speed RC oscillation 2.7 to 5.5
0.5
1.0
2.0
FmSRC
FsX’tal
XT1, XT2
Internal low-speed RC oscillation
32.768kHz crystal oscillation
See Fig. 1.
2.7 to 5.5
2.7 to 5.5
50 100
32.768
200
kHz
Oscillation
tmsMRC
When Frequency variable RC
stabilization
time
oscillation state is switched from
stopped to enabled.
2.7 to 5.5
100 μs
See Fig. 3.
Note 2-2: See Tables 1 and 2 for the oscillation constants.
Note 2-3: When switching the system clock, allow an oscillation stabilization time of 100μs or longer after the
frequency variable RC oscillator circuit transmits from the "oscillation stopped" to "oscillation enabled" state.
No.A1955-15/28