MB89174LPF datasheet(29/50 Pages) FUJITSU

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MB89170/170A/170L Series

2. Recommended Operating Conditions

(VSS = 0.0 V)

* : These values vary with the operating frequency, instruction cycle, and the assurance range for the DTMF gen-

erator. See Figure 1 and “(7) Electrical Characteristics of DTMF Generator” in “4. AC characteristics.”

Parameter

Symbol

Value

Unit

Remarks

Min.

Max.

Power supply voltage

VCC

2.2*

6.0*

Normal operation assurance range*

MB89174A/173/174L/173L

2.7*

6.0*

Normal operation assurance range*

MB89PV170A/P175A/P173

1.5

6.0

Retains the RAM state in the stop

mode

Operating temperature

–40

+85

°C

Assurance range

for DTMF generator

Operating assurance range

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

4.0

2.0

1.33

1.0

0.8

0.67

0.57

0.5

Main clock operating frequency (at an instruction cycle of 4/FCH) (MHz)

Minimum execution time (instruction cycle) (µs)

Note: The shaded area is assured only for the MB89170A series.

Figure 1 Operating Voltage vs. Main Clock Operating Frequency(MB89170/170A series)

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