参数资料
型号: 7549
厂商: Renesas Technology Corp.
英文描述: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述: 单芯片8位CMOS微机
文件页数: 61/73页
文件大小: 1272K
代理商: 7549
Rev.2.00
REJ03B0202-0200
Mar 05, 2007
Page 61 of 70
7549 Group
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
Recommended operating conditions (2)
(V
CC
= 1.8 to 5.5V, V
SS
= 0 V, Ta =
20 to 85
°
C, unless otherwise noted)
NOTE:
1. When the oscillation frequency has a duty cycle of 50 %.
Fig 80. Power source voltage and oscillation frequency
Min.
Typ.
f(X
IN
)
Symbol
Parameter
Limits
Unit
Max.
8
8
50
MHz
X
CIN
oscillation
(Vcc
2.4)
×
2
0.7
(Vcc
2.2)
0.2
MHz
+2
kHz
32.768
MHz
X
IN
oscillation
External clock input
MHz
MHz
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
X
IN
oscillation
frequency (Note 1)
X
CIN
oscillation
frequency (Note 1)
+1
(Vcc
2.4)
0.4
(Vcc
1.8)
0.2
+4
+1
O
I
(
Power source voltage:
Vcc(V)
8.0
4.0
2.0
1.0
0.0
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 (5V/Typ:250kHz)/Double-, high-, middle-, low-speed mode
High-speed on-chip oscillator
(5V/Typ:4MHz)
Double-, high-, middle-,
low-speed mode
X
CIN
oscillation/Double-, high-, middle-, low-speed mode
X
IN
oscillation
Double-speed mode
X
IN
oscillation
High-, middle-,
low-speed mode
When X
IN
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.
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