M38C88EA-XXXFP 查看數據表（PDF） - MITSUBISHI ELECTRIC
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M38C88EA-XXXFP Datasheet PDF : 51 Pages
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MITSUBISHI MICROCOMPUTERS
38C8 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Table 12 Recommended operating conditions (mask ROM version) (Vcc = 2.2 to 5.5 V, Ta = –20 to 85°C, unless otherwise noted)
Symbol
Parameter
Conditions
Min.
f(CNTR0) Timer X, timer Y input frequency (duty cycle 50%)
f(CNTR1)
f(XIN)
Main clock input oscillation frequency (Note 1)
High-speed mode
(4.0 V ≤ VCC ≤ 5.5 V)
High-speed mode
(2.2 V ≤ VCC < 4.0 V)
Middle-speed mode
(2.7 V ≤ VCC ≤ 5.5 V)
f(XCIN)
Sub-clock input oscillation frequency (Notes 1, 2)
Limits
Typ.
Max.
f(XIN)/2
Unit
MHz
8.0
MHz
(20✕VCC–8)/13 MHz
8.0
MHz
32.768
50
kHz
Notes 1: When the oscillation frequency has a duty cycle of 50 %.
2: When using the microcomputer in low-speed mode, set the sub-clock input oscillation frequency on condition that f(XCIN) < f(XIN)/3.
Table 13 Recommended operating conditions (PROM version) (Vcc = 2.5 to 5.5 V, Ta = –20 to 85°C, unless otherwise noted)
Symbol
Parameter
Conditions
Min.
f(CNTR0) Timer X, timer Y input frequency (duty cycle 50%)
f(CNTR1)
f(XIN)
Main clock input oscillation frequency (Note 1)
High-speed mode
(4.0 V ≤ VCC ≤ 5.5 V)
High-speed mode
(2.5 V ≤ VCC < 4.0 V)
Middle-speed mode
(2.7 V ≤ VCC ≤ 5.5 V)
f(XCIN)
Sub-clock input oscillation frequency (Notes 1, 2)
Limits
Typ.
Max.
f(XIN)/2
32.768
8.0
4✕VCC–8
8.0
50
Notes 1: When the oscillation frequency has a duty cycle of 50 %.
2: When using the microcomputer in low-speed mode, set the sub-clock input oscillation frequency on condition that f(XCIN) < f(XIN)/3.
Unit
MHz
MHz
MHz
MHz
kHz
43
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