7549 datasheet(64/84 Pages) RENESAS

64 / 84 page

Rev.2.01

Oct 15, 2007

Page 64 of 81

REJ03B0202-0201

7549 Group

Table 13 Recommended operating conditions (2)

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

−20 to 85 °C, unless otherwise noted)

NOTE:

1. When the oscillation frequency has a duty cycle of 50 %.

Fig 82. Power source voltage and oscillation frequency

Min.

Typ.

f(XIN)

Symbol

Parameter

Limits

Unit

Max.

MHz

XCIN oscillation

(Vcc

− 2.4) × 2

0.7

MHz

kHz

32.768

MHz

XIN oscillation

External clock input

MHz

Double-speed mode

High-, middle-,

low-speed mode

Vcc = 4.5

−5.5 V

Vcc = 2.4

−4.5 V

Vcc = 2.2

−2.4 V

Vcc = 4.0

−5.5 V

Vcc = 2.4

−4.0 V

Vcc = 1.8

−2.4 V

Double-, high-, middle-,

low-speed mode

Vcc = 1.8

−5.5 V

XIN oscillation

frequency (Note 1)

XCIN oscillation

frequency (Note 1)

(Vcc

− 2.2)

0.2

(Vcc

− 2.4)

0.4

(Vcc

− 1.8)

0.2

Power source voltage: Vcc(V)

8.0

4.0

2.0

1.0

0.0

1.5

2.5

3.5

4.5

5.5

2.0

3.0

4.0

5.0

Low-speed on-chip oscillator (5 V/Typ:250 kHz)//Double-, high-, middle-, low-speed mode

High-speed on-chip oscillator

(5 V/Typ:4 MHz)

Double-, high-, middle-,

low-speed mode

XCIN oscillation//Double-, high-, middle-, low-speed mode

XIN oscillation

Double-speed mode

XIN oscillation

High-, middle-,

low-speed mode

When XIN is used, the MCU can be

operated within the range shown in

diagonal lines.

Confirm that the oscillation is stable

within the operating supply voltage

range before use.

Contact the oscillator manufacturer

for oscillation constants.

7549 Datasheet(PDF) 64 Page - Renesas Technology Corp

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