參數(shù)資料
型號(hào): UPD784037
廠商: NEC Corp.
英文描述: 16-/8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 16-/8-bit的單晶片微控制器
文件頁(yè)數(shù): 64/94頁(yè)
文件大?。?/td> 503K
代理商: UPD784037
μ
PD784035Y, 784036Y, 784037Y, 784038Y
64
OSCILLATOR CHARACTERISTICS (T
A
= –40 to +85
°
C, V
DD
= +4.5 to 5.5 V, V
SS
= 0 V)
Resonator
Recommended Circuit
Parameter
MIN.
MAX.
Unit
Ceramic resonator or
crystal resonator
Oscillator frequency (f
XX
)
4
32
MHz
External clock
X1 input frequency (f
X
)
4
32
MHz
X1 input rising/falling time (t
XR
, t
XF
)
0
10
ns
X1 input high-/low-level width
(t
WXH
, t
WXL
)
10
125
ns
Caution When using the system clock oscillator, wiring the area enclosed with the broken line should
be carried out as follows to avoid an adverse effect from wiring capacitance.
Wiring should be as short as possible.
Wiring should not cross other signal lines.
Wiring should not be placed close to a varying high current.
The potential of the oscillator capacitor ground should be the same as V
SS1
. Do not ground
wiring to a ground pattern in which a high current flows.
Do not fetch a signal from the oscillator.
V
SS1
X1
X2
C2
C1
X1
X2
HCMOS inverter
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