EM78452 datasheet(49/54 Pages) EMC

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EM78452

8-Bit Microcontroller

Product Specification (V1.0) 10.18.2007

• 45

(This specification is subject to change without further notice)

Absolute Maximum Rating

Items

Rating

Temperature under bias

°C

Storage temperature

-65

°C

150

°C

Input voltage

-0.3V

+6.0V

Output voltage

-0.3V

+6.0V

Operating Frequency (2clk)

20MHz

Electrical Characteristics

7.1 DC Characteristic

Ta=25

°C, VDD=5V±5%, VSS=0V

Symbol

Parameter

Condition

Min

Typ

Max

Unit

Crystal VDD to 1.8V

−

Crystal VDD to 3.3V

−

FXT

Crystal VDD to 5V

Two clocks

−

MHz

IIL

Input Leakage Current

VIN = VDD, VSS

−

±1

μA

VIH1

Input High Voltage VDD=5V)

−

2.0

−

VIL1

Input Low Voltage (VDD=5V)

−

0.8

VIHX1

Clock Input High Voltage

(VDD=5V)

OSCI

2.5

−

VILX1

Clock Input Low Voltage

(VDD=5V)

OSCI

−

1.0

VIHT1

Input high threshold voltage

(Schmitt trigger)

P70/RESET pin

2.0

−

VILT1

Input low threshold voltage

(Schmitt trigger)

P70/RESET pin

−

0.8

VIH2

Input High Voltage (VDD=3V)

−

1.5

−

VIL2

Input Low Voltage (VDD=3V)

−

0.4

VIHX2

Clock Input High Voltage

(VDD=3V)

OSCI

1.5

−

VILX2

Clock Input Low Voltage

(VDD=3V)

OSCI

−

0.6

VOH1

Output High Voltage

(Ports 5, 6, 8, P74~P77,

P90~P92, P95~P97,)

IOH = -12.0mA

2.4

−

S7=1 (IOCD Register Bit 7),

IOH = -9.0mA

2.4

−

VOH2

Output High Voltage

(P70~P72)

S7=0 (IOCD Register Bit 7),

IOH = -12.0mA

2.4

−

VOH3

Output High Voltage

(P93/SDO, P94/SCK)

IOH = -12.0mA

2.4

−

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