UPD70208HGF-12-3B9 NEC [NEC], UPD70208HGF-12-3B9 Datasheet - Page 74
UPD70208HGF-12-3B9
Manufacturer Part Number
UPD70208HGF-12-3B9
Description
V40HLTM, V50HLTM 16/8, 16-BIT MICROPROCESSOR
Manufacturer
NEC [NEC]
Datasheet
1.UPD70208HGF-12-3B9.pdf
(110 pages)
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74
RECOMMENDED OSCILLATOR
(1) Ceramic resonator connection (T
(2) External clock input
The clock input circuits (1) and (2) shown below are recommended.
( PD70208H, 70216H-20))
Caution The high-speed CMOS inverter should be as close as possible to the X1 and X2 pins.
Cautions 1. The oscillator should be as close as possible to the X1 and X2 pins.
2. No other signal lines should pass through the area enclosed in dashed line.
3. For matching between V40HL, V50HL and resonator, the efficient evaluation should be carried
4. The values of the oscillator constants C1 and C2 depend on the characteristics of the
out.
resonator used. Evaluate them with the resonator actually used.
External Clock
X1
Murata Mfg.
Co., Ltd.
TDK Corp.
Manufacturer
A
= –40 to +85 C, V
X2
Frequency
(f
High-speed
CMOS
Inverter
XX
) [MHz]
40
32
25
20
32
25
20
Data Sheet U13225EJ4V0DS00
X1
C1
CSA40.00MXZ040
CSA32.00MXZ040
CSA25.00MXZ040
CSA20.00MXZ040
FCR32.0M2G
FCR25.0M2G
FCR20.0M2G
Product Name
DD
= 5 V 10% ( PD70208H, 70216H-10/12/16), V
or
X2
C2
C1 [pF]
External Clock
Recommended
10
10
3
5
5
5
5
Constant
X1
C2 [pF]
PD70208H, 70216H
10
10
3
5
5
5
5
High-speed
CMOS
Inverter
Open
X2
DD
= 5 V 5%
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