Crystal Oscillators - Programmable -
Seiko Epson
SPG Series
Features
• Capable of selecting 57 varieties of frequency
output
• Use of CMOS IC enables low current
consumption
• Easy-to-mount DIP 16 pin type
• Most types held ex-stock
Specifications
Item
Symbol
Specifications
Remarks
Model name
8640AN 8640BN 8640CN 8650A 8650B 8650C 8650D
8650E
8651A 8651B
8651E
For output frequency, refer to the
table on the next page
Oscillation source frequency
fo
600kHz 1MHz 769kHz 60kHz 100kHz 96kHz 153.6kHz 32.768kHz 60kHz 100kHz 32.768kHz
Power source Max. supply voltage VDD-GND
-0/3V ~ +7.0V
5.0V ± 0.5V
voltage
Temperature Storage temp.
range Operating temp.
Operating voltage
VDD
TSTG
TOPR
TSOL
∆f/f
-55°C ~ +125°C
-30°C ~ +80°C
±5ppm (1*)
-10°C ~ +70°C
Soldering condition (lead part)
Frequency tolerance
Under 260°C within 10 sec.
±50ppm
Package should be less than 150°C
VDD=5V, Ta= 25°C
±100ppm
Frequency/temp. characteristics
Frequency Voltage characteristics
Aging
+10/-120ppm
±10ppm
VDD=5V, Ta=10 ~ 70°C
VDD=4.5 ~ 5.5V
±20ppm ±10ppm ±20ppm
1.0mA 2.0mA 1.5mA
±5ppm
fa
±5ppm/year max.
±3ppm/year max
VDD=5V, Ta=25°C
Current consumption
lop
0.5mA
Max. No load condition
(*1) Frequency tolerance of 8651 system shows the value guaranteed at the time of shipment
Electrical Characteristics VDD=5V±0.5V, Ta=-10 -70°C CL≤15pF
Reset Timing
Item
Symbol
Min.
Typ.
Max. Unit
Remarks
L input voltage
VIL
VIH
IRL
IRH
IIL
0
0.8
VDD
-5
V
H input voltage
VDD-1.0
-30
L input current (Reset)
H input current (Reset)
µA
µA
µA
Reset=VSS
Reset=VDD
0.5
L input current
-0.5
5
(input terminal except for Reset)
H input current
IIH
30
µA
(input terminal except for Reset)
L output voltage
H output voltage
L output current
H output current
Output rise time
Output fall time
Duty
VOL
VOH
IOL
0.4
V
V
IOL=1.6mA
IOH=40µA
VDD-1.0
1.6
Dimensions (mm)
mA
µA
nS
nS
%
VOL=0.4V
IOH
-40
60
50
60
VOH=VDD-1.0V
tTLH
tTHL
30
25
40
Except in the case
of 1/3 and 1/5
Min. reset pulse width
Reset delay time
tRW
tR
1.0
µS
µS
1.0
1M
Reset release
synchronous error
tE
tw-1/2 to (*1) tw (*2)
External signal input
frequency
FIN
tIN
Hz
µS
8640N only
8640N only
(*3)
External signal input
plus width
0.5
Block Diagram
Oscillation startup time
tOSC
0.2
1
sec.
(*1) to-oscillation source cycle. (*2) tw=1/2 cycle of preset frequency
(*3) for more than 1mS until VDD=0.4.5V. Time at 4.5V is to be zero
Divider IC (without quartz crystal)
Item
Symbol Specifications
Remarks
Model name
8650 ?
Input clock frequency
Current consumption
1MHz MAX
about 2mA
lop
No load condition
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