LC877816A/12A/08A

No.A0635-11/21

Allowable Operating Conditions at Ta = -30°C to +70°C, VSS1 = VSS2 = 0V

Specification

Parameter

Symbol

Pin/Remarks

Conditions

VDD

min

typ

max

unit

VDD(1)

0.37

μs≤tCYC≤200μs

3.0

3.6

VDD(2)

VDD1=VDD2=V2

Normal mode

0.75

μs≤tCYC≤200μs

2.4

3.6

VDD(3)

2.25

μs≤tCYC≤200μs

3.0

3.6

Operating

supply voltage

range

VDD(4)

VDD1=VDD2=V2

Power save mode

4.28

μs≤tCYC≤200μs

2.4

3.6

Supply

voltage range

in Hold mode

VHD

VDD1=VDD2=V2

Keep RAM and register data in

HOLD mode.

2.2

3.6

VIH(1)

• Ports 1

• P71 to P73

• Port 70

input/interrupt

Output disable

2.4 to 3.6

0.3VDD

+0.7

VDD

VIH(2)

• Ports 0, C

Output disable

2.4 to 3.6

0.3VDD

+0.7

VDD

VIH(3)

Port 70

Watchdog timer

Output disable

2.4 to 3.6

0.9VDD

VDD

Input high

voltage

VIH(4)

XT1, CF1, RES

2.4 to 3.6

0.75VDD

VDD

VIL(1)

• Ports 1

• P71 to P73

• Port 70

input/interrupt

Output disable

2.4 to 3.6

VSS

0.2VDD

VIL(2)

• Ports 0, C

Output disable

2.4 to 3.6

VSS

0.2VDD

VIL(3)

Port 70

Watchdog timer

Output disable

2.4 to 3.6

VSS

0.8VDD

-1.0

Input low

Voltage

VIL(4)

XT1, CF1, RES

2.4 to 3.6

VSS

0.25VDD

V

3.0 to 3.6

2.25

200

Operation

cycle time

tCYC

(Note 2-1)

Power save mode

2.4 to 3.6

4.28

200

μs

External

system clock

frequency

FEXCF(1)

CF1

• CF2 open

• System clock divider:1/1

• External clock DUTY=50 ± 5%

• Normal mode

2.4 to 3.6

0.1

4

MHz

FmCF

CF1, CF2

4MHz ceramic resonator

oscillation

See fig. 1

2.4 to 3.6

4

MHz

FmRC

RC oscillation

VDD=3.0V, Ta=25°C

2.4 to 3.6

300

500

700

kHz

Oscillation

frequency

range

(Note 2-2)

FsX’tal

XT1, XT2

32.768kHz crystal resonator

oscillation

See fig. 2

2.4 to 3.6

32.768

kHz

Note 2-1: Relationship between tCYC and oscillation frequency is 3/FmCF at a division ratio 1/1 and 6/FmCF at a

division ratio of 1/2.

Note 2-2: See Table 1 and 2 for the oscillation constants.