38D5_08 datasheet(99/142 Pages) RENESAS

Part #	38D5

Description	SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

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Manufacturer	RENESAS [Renesas Technology Corp]

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99 / 142 page

Rev.3.04

May 20, 2008

Page 99 of 134

REJ03B0158-0304

38D5 Group

Recommended Operating Conditions

NOTES:

1. When the A/D converter is used, refer to the recommended operating conditions of the A/D converter.

2. 12.5 MHz

< f(XIN) ≤ 16 MHz is not available in the frequency/2 mode.

3. The oscillation start voltage and the oscillation start time differ depending on factors such as the oscillator, circuit constants, and

operating temperature range. Note that oscillation start may be particularly difficult at low voltage when using a high-frequency

oscillator.

f: Oscillation frequency (1 MHz

≤ f(XIN) ≤ 8 MHz) of oscillator. When the 8 MHz oscillation is used, assign “8” to “f”.

Table 23

Recommended operating conditions (1)

(VCC = 1.8 to 5.5 V, VSS = 0 V, Ta =

−20 to 85°C unless otherwise noted)

Symbol

Parameter

Limits

Unit

Min.

Typ.

Max.

VCC

Power source

voltage (1)

Frequency/2 mode (2)

f(XIN)

≤ 12.5MHz

4.5

5.5

V

f(XIN)

≤ 8MHz

4.0

5.5

V

f(XIN)

≤ 4MHz

2.0

5.5

V

f(XIN)

≤ 2MHz

1.8

5.5

V

Frequency/4 mode

f(XIN)

≤ 16MHz

4.5

5.5

V

f(XIN)

≤ 8MHz

2.0

5.5

V

f(XIN)

≤ 4MHz

1.8

5.5

V

Frequency/8 mode

f(XIN)

≤ 16MHz

4.5

5.5

V

f(XIN)

≤ 8MHz

2.0

5.5

V

f(XIN)

≤ 4MHz

1.8

5.5

V

Low-speed mode

1.8

5.5

V

On-chip oscillator mode

1.8

5.5

V

When start oscillating (3)

0.05

× f + 1.9

V

VSS

Power source voltage

0V

VLI

VL1 input voltage

Voltage multiplier is used

1.3

1.8

2.1

V

VREF

A/D converter reference voltage

2.0

VCC

V

AVSS

Analog power source voltage

0

V

VIA

Analog input voltage AN0

−AN7

AVSS

VCC

V

VIH

“H” input voltage P00

−P07, P10−P17, P24−P27, P30−P37, P41, P43,

P50

−P57, P60(CM4=0), P61, P65, P72−P74

0.7VCC

VCC

V

VIH

“H” input voltage P20

−P23, P40, P42, P44−47, P62−P64, P66, P67,

P70, P71

0.8VCC

VCC

V

VIH

“H” input voltage RESET

2.2V

< VCC ≤ 5.5V

0.8VCC

VCC

V

VCC

≤ 2.2V

65

× VCC - 99

VCC -

100

VCC

V

VIH

“H” input voltage XIN

0.8VCC

VCC

V

VIL

“L” input voltage P00

−P07, P10−P17, P24−P27, P30−P37, P41, P43,

P50

−P57, P60, P61, P65, P72−P74

0

0.3VCC

V

VIL

“L” input voltage P20

−P23, P40, P42, P44−P47, P62−P64, P66, P67,

P70, P71, OSCSEL

0

0.2VCC

V

VIL

“L” input voltage RESET

2.2V

< VCC ≤ 5.5V

0

0.2VCC

V

VCC

≤ 2.2V

0

65

× VCC − 99

100

V

VIL

“L” input voltage XIN

0

0.2VCC

V

QzROM VERSION

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