LC87F7NC8A Datasheet, PDF (16/28 Pages) ON Semiconductor – 8-bit Microcontroller

LC87F7NC8A
Allowable Operating Range at Ta = 40°C to +85°C, VSS1 = VSS2 = VSS3 = 0V
Parameter
Operating
supply voltage
(Note 2-1)
Symbol
VDD(1)
Pin/Remarks
Conditions
VDD1=VDD2=VDD3
0.167stCYC200s
0.356stCYC200s
VDD [V]
Specification
min
typ
max
unit
2.7
3.6
2.5
3.6
Memory
sustaining
supply voltage
VHD
VDD1
RAM and register contents
sustained in HOLD mode.
2.0
3.6
High level input
voltage
VIH(1)
Ports 0, 3, 8
Ports A, B, C, D, E, F
Port L
Output disabled
2.5 to 3.6
0.3VDD
+0.7
VDD
VIH(2)
Port 1
Ports 71 to 73
P70 port input/
interrupt side
• Output disabled
• When INT1VTSL=0
(P71 only)
2.5 to 3.6
0.3VDD
+0.7
VDD
VIH(3)
P71 interrupt side
• Output disabled
• When INT1VTSL=1
2.5 to 3.6 0.85VDD
VDD
VIH(4)
P87 small signal
input side
Output disabled
2.5 to 3.6 0.75VDD
VDD
VIH(5)
VIH(6)
P70 watchdog timer
side
XT1, XT2, CF1, RES
Output disabled
2.5 to 3.6
2.5 to 3.6
0.9VDD
0.75VDD
VDD
V
VDD
Low level input
voltage
VIL(1)
VIL(2)
VIL(3)
VIL(4)
VIL(5)
VIL(6)
Ports 0, 3, 8
Ports A, B, C, D, E, F
Port L
Port 1
Ports 71 to 73
P70 port input/
interrupt side
P71 interrupt side
P87 small signal
input side
P70 watchdog timer
side
XT1, XT2, CF1, RES
Output disabled
• Output disabled
• When INT1VTSL=0
(P71 only)
• Output disabled
• When INT1VTSL=1
Output disabled
Output disabled
2.5 to 3.6
VSS
2.5 to 3.6
2.5 to 3.6
2.5 to 3.6
2.5 to 3.6
2.5 to 3.6
VSS
VSS
VSS
VSS
VSS
0.2VDD
0.2VDD
0.45VDD
0.25VDD
0.8VDD
-1.0
0.25VDD
Instruction cycle
time
(Note 2-2)
tCYC
2.7 to 3.6
2.5 to 3.6
0.167
0.356
200
s
200
External system FEXCF(1) CF1
• CF2 pin open
clock frequency
• System clock frequency
division ratio=1/1
2.5 to 3.6
0.1
18
• External system clock
duty=50±5%
MHz
• CF2 pin open
• System clock frequency
2.5 to 3.6
0.2
36
division ratio=1/2
Note 2-1: VDD must be held greater than or equal to 3.0V in the flash ROM onboard programming mode.
Note 2-2: 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.
Continued on next page.
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