参数资料
型号: MC38HC705J2
厂商: Motorola, Inc.
元件分类: DC/DC变换器
英文描述: RTS Series - Econoline Unregulated DC-DC Converters; Input Voltage (Vdc): 05V; Output Voltage (Vdc): 3.3V; Power: 2W; Assembly; High Power Density; Optional Continuous Short Circuit Protected; Efficiency to 85%
中文描述: M68HC05系列系列8位微控制器单元
文件页数: 76/78页
文件大小: 427K
代理商: MC38HC705J2
MC68HC705J2
ELECTRICAL SPECIFICATIONS
MOTOROLA
10-9
10.7 Control Timing (V
DD
= 3.3 Vdc)
Table 10-6. Control Timing (V
DD
= 3.3 Vdc)
(V
DD
= 3.3 Vdc
±
10%, V
SS
= 0 Vdc; T
A
= T
L
to T
H
)
Characteristic
Symbol
Min
Max
Unit
Oscillator Frequency
Crystal Option
External Clock Option
Internal Operating Frequency
Crystal (fosc
÷
2)
External Clock (fosc
÷
2)
Cycle Time
fosc
dc
2.0
2.0
MHz
fop
dc
1.0
1.0
MHz
tcyc
t
RL
1000
ns
RESET Pulse Width
Timer Resolution (NOTE 1)
1.5
tcyc
tcyc
ns
t
RESL
4.0
Interrupt Pulse Width Low (Edge-Triggered)
t
ILIH
250
Interrupt Pulse Period
t
ILIL
(NOTE 2)
tcyc
ns
OSC1 Pulse Width
t
OH
, t
OL
400
NOTES:
1. The 2-bit timer prescaler is the limiting factor in determining timer resolution.
2. The minimum period t
ILIL
should not be less than the number of cycle times it takes to execute
the interrupt service routine plus 19 tcyc.
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