Renesas PCA4738F-80A Manuel d'utilisateur télécharger pdf (Page 45)

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS

38C3 Group

Table 14 Recommended operating conditions (Vcc = 2.5 to 5.5 V, Ta = –20 to 85°C, unless otherwise noted)

Input frequency (duty cycle 50%)

Main clock input oscillation frequency (Note 4)

Sub-clock input oscillation frequency (Notes 4, 5)

f(CNTR

f(CNTR1)

f(XIN)

f(XCIN)

Limits

MHz

kHz

Parameter

Min. Typ.

32.768

Max.

4.0

(2✕V

CC)–4

8.0

(4✕VCC)–8

8.0

Symbol Unit

(4.0 V ≤ VCC ≤ 5.5 V)

(VCC ≤ 4.0 V)

High-speed mode

(4.0 V ≤ VCC ≤ 5.5 V)

High-speed mode

(VCC ≤ 4.0 V)

Middle-speed mode

Notes 4: When the oscillation frequency has a duty cycle of 50%.

5: When using the microcomputer in low-speed mode, set the sub-clock input oscillation frequency on condition that f(X

CIN) < f(XIN)/3.

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Renesas PCA4738F-80A Manuel d'utilisateur Page 45