LC87F0808AUQFPTLM-H Datasheet, PDF (13/25 Pages) ON Semiconductor – 8-bit 1-chip Microcontroller

LC87F0808A
Allowable Operating Conditions at Ta = -40°C to +85°C, VSS1 = VSS2 = 0V
Parameter
Symbol
Operating
VDD
supply voltage
Pin/Remarks
VDD1, VDD2
Conditions
0.142μs ≤ tCYC ≤ 200μs
VDD[V]
Specification
min
typ
max
unit
3.3
5.5
Memory
VHD
VDD1, VDD2
RAM and register contents sustained
sustaining
in HOLD mode.
2.0
supply voltage
High level
input voltage
Low level
input voltage
VIH(1)
VIH(2)
VIH(3)
VIL(1)
VIL(2)
Ports 1, 2, 3, 7
Ports 0
CF1, CF2, RES
Ports 1, 2, 3, 7
Ports 0
3.3 to 5.5
3.3 to 5.5
3.3 to 5.5
4.0 to 5.5
3.3 to 4.0
4.0 to 5.5
0.3VDD+0.7
0.3VDD+0.7
0.75VDD
VSS
VSS
VSS
VDD
VDD
V
VDD
0.1VDD+0.4
0.2VDD
0.15VDD+0.4
Instruction
cycle time
VIL(3)
tCYC
CF1, CF2, RES
3.3 to 4.0
3.3 to 5.5
3.3 to 5.5
VSS
VSS
0.142
0.2VDD
0.25VDD
200 μs
(Note 2-1)
External
FEXCF
CF1
• CF2 pin open
system clock
frequency
• System clock frequency division
3.3 to 5.5
0.1
20
ratio=1/1
• External system clock duty=50±5%
Oscillation
FmCF(1)
CF1, CF2
20MHz ceramic oscillation
3.3 to 5.5
20
frequency
See Fig. 1.
range
(Note 2-2)
FmCF(2)
CF1, CF2
10MHz ceramic oscillation
See Fig. 1.
3.3 to 5.5
10
MHz
FmCF(3)
CF1, CF2
4MHz ceramic oscillation
3.3 to 5.5
4
See Fig. 1.
FmMRC
Internal High-speed RC oscillation.
1/2 frequency division ration.
3.3 to 5.5
19.0 20.0
21.0
(RCCTD=0) (Note 2-3)
FmRC
Internal medium-speed RC oscillation 3.3 to 5.5
0.5
1.0
2.0
FmSRC
Internal low-speed RC oscillation
3.3 to 5.5
15
30
60
FsX’tal
XT1, XT2
32.768kHz crystal oscillation
kHz
3.3 to 5.5
32.768
See Fig. 1.
Note 2-1: Relationship between tCYC and oscillation frequency is 3/FmCF at a division ratio of 1/1 and 6/FmCF at
a division ratio of 1/2.
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
high-speed RC oscillator circuit transmits from the "oscillation stopped" to "oscillation enabled" state.
No.A1828-13/25