Crystal oscillator

No.

1

2

3

4

5

6

7

8

Pin terminal

NC

CTL 3

CTL 2

CTL 1

CTL 6

CTL 5

CTL 4

GND

No.

16

15

14

13

12

11

10

9

Pin terminal

NC

RESET

NC (CSEL)

NC (EXC)

FOUT

TEST

OUT

1

2

34

56

7 8

16 15

14

13

12

11

10 9

NC: Do not connect to the external terminal.

For 8650 O

( ) shown 8640N only

11. NC

12. CLOCK 13. ENABLE

Explanation of terminal

8640AN

Terminal connection

8650E 8651E

8650B 8651B

8650A 8651A

8640BN

8650C

8640CN

CTL3

CTL6

CTL3

CTL6

(Unit: Hz)

0= “L” 1=“H”

CTL3

CTL6

CTL3

CTL6

CTL3

CTL6

Setting of divider output

Baud rate generator

Setting of output frequency

(a) CTL 1 to 6 :

(b) OUT :

(c) FOUT :

(d) RESET :

(e) TEST :

(f) EXC (8640N only) :

(g) CSEL (8640N only) :

Programs dividing ratio. (pull-down resistor incorporated.)

Output frequency preset by CTL1 to 6.

(refer to the procedure for setting output frequency.)

Constantly outputs the oscillation source frequency of builtin

crystal unit.

Stops output at RESET= “L”.

(pull-up resistor incorporated.)

Used for the input terminal for testing. When CTL4 is H,

output will be 1000 times larger than the preset value at

TEST= “H”. (pull-down resistor incorporated.)

Serves as input terminal when using an external clock by

changing to the builtin oscillator.

Effective only when CSEL is H.

When this terminal is made H, the external clock is selected.

(pull-down resistor incorporated.)

and when TEST terminal, CSEL terminal, and CTL 1 to 6 terminals are not used, to GND.

(Note)

CTL1

0

0

0

0

1

1

1

1

CTL2

0

0

1

1

0

0

1

1

CTL3

0

1

0

1

0

1

0

1

Dividing

ratio

1/1

1/10

1/2

1/3

1/4

1/5

1/6

1/12

CTL4

0

0

0

0

1

1

1

1

CTL5

0

0

1

1

0

0

1

1

CTL6

0

1

0

1

0

1

0

1

Dividing

ratio

1/1

1/10

1/10

2

1/10

3

1/10

4

1/10

5

1/10

6

1/10

7

Set terminal

CTL1

0

0

0

0

1

1

1

1

CTL2

0

0

1

1

0

0

1

1

CTL4

CTL5

0

1

0

1

0

1

0

1

0

0

0

600k

60k

300k

200k

150k

120k

100k

50k

0

0

1

60k

6k

30k

20k

15k

12k

10k

5k

0

1

0

6k

600

3k

2k

1.5k

1.2k

1k

500

0

1

1

600

60

300

200

150

120

100

50

1

0

0

60

6

30

20

15

12

10

5

1

0

1

6.0

0.6

3.0

2.0

1.5

1.2

1.0

0.5

1

1

0

0.6

0.06

0.3

0.2

0.15

0.12

0.1

0.05

1

1

1

0.06

0.006

0.03

0.02

0.015

0.012

0.01

0.005

Set terminal

CTL1

0

0

0

0

1

1

1

1

CTL2

0

0

1

1

0

0

1

1

CTL4

CTL5

0

1

0

1

0

1

0

1

0

0

0

1M

100k

500k

333.3k

250k

200k

166.6k

83.3k

0

0

1

100k

10k

50k

33.3k

25k

20k

16.6k

8.3k

0

1

0

10k

1k

5k

3.3k

2.5k

2k

1.6k

833.3

0

1

1

1k

100

500

333.3

250

200

166.6

83.3

1

0

0

100

10

50

33.3

25

20

16.6

8.3

1

0

1

10

1

5

3.33

2.5

2

1.6

0.83

1

1

0

1

1/10

1/2

1/3

1/4

1/5

1/6

1/12

1

1

1

1/10

1/100

1/20

1/30

1/40

1/50

1/60

1/120

Set terminal

CTL1

0

0

0

0

1

1

1

1

CTL2

0

0

1

1

0

0

1

1

0

1

0

1

0

1

0

1

CTL4

CTL5

0

0

0

60k

6k

30k

20k

15k

12k

10k

5k

0

0

1

6.0k

600

3.0k

2.0k

1.5k

1.2k

1.0k

500

0

1

0

600

60

300

200

150

120

100

50

0

1

1

60

6

30

20

15

12

10

5

1

0

0

6.0

0.6

3.0

2.0

1.5

1.2

1.0

0.5

1

0

1

0.6

0.06

0.3

0.2

0.15

0.12

0.1

0.05

1

1

0

0.06

0.006

0.03

0.02

0.015

0.012

0.01

0.005

1

1

1

0.006

0.0006

0.003

0.002

0.0015

0.0012

0.001

0.0005

Set terminal

CTL1

0

0

0

0

1

1

1

1

CTL2

0

0

1

1

0

0

1

1

CTL4

CTL5

0

1

0

1

0

1

0

1

0

0

0

100k

10k

50k

33.3k

25k

20k

16.6k

8.3k

0

0

1

10k

1k

5k

3.3k

2.5k

2k

1.6k

833.3

0

1

0

1k

100

500

333.3

250

200

166.6

83.3

0

1

1

100

10

50

33.3

25

20

16.6

8.3

1

0

0

10

1

5

3.33

2.5

2

1.6

0.83

1

0

1

1

1/10

1/2

1/3

1/4

1/5

1/6

1/12

1

1

0

1/10

1/100

1/20

1/30

1/40

1/50

1/60

1/120

1

1

1

1/100

1/1000

1/200

1/300

1/400

1/500

1/600

1/1200

Set terminal

CTL1

0

0

0

0

1

1

1

1

CTL2

0

0

1

1

0

0

1

1

CTL4

CTL5

0

1

0

1

0

1

0

1

0

0

0

32768

3276.8

16384

10922.6

8192

6553.6

5461.3

2730.6

0

0

1

3276.8

327.68

1638.4

1092.26

819.2

655.36

546.13

273.06

0

1

0

327.68

32.768

163.84

109.226

81.92

65.536

54.613

27.306

0

1

1

32.768

3.276

16.384

10.922

8.192

6.553

5.461

2.730

1

0

0

3.276

0.327

1.638

1.092

0.819

0.655

0.546

0.273

1

0

1

0.3276

0.0327

0.1638

0.1092

0.0819

0.0655

0.0546

0.0273

1

1

0

0.03276

0.00327

0.01638

0.01092

0.00819

0.00655

0.00546

0.00273

1

1

1

0.00327

0.00032

0.00163

0.00109

0.00081

0.00065

0.00054

0.00027

CTL1

0

1

0

0

1

CTL2

0

0

0

1

0

CTL3

0

1

1

0

0

CTL4

0

0

0

0

0

CTL5

0

0

0

0

0

CTL6

0

0

0

1

1

Output frequency

768 kHz

153.6

76.8

38.4

19.2

Baud rate output

example (fo/16)

48000bits/sec.

9600

4800

2400

1200

CTL1

0

1

0

0

0

1

1

1

CTL2

0

0

0

1

1

0

1

1

CTL3

0

1

1

0

1

0

0

1

CTL4

0

0

0

0

0

0

0

0

CTL5

0

0

0

0

0

0

0

0

CTL6

0

0

0

1

1

1

1

1

Output frequency

96.0 kHz

19.2

9.6

4.8

3.2

2.4

1.6

0.8

Baud rate output

example (to/16)

6000bits/sec.

1200

600

300

200

150

100

50

50

Note: Lower digits are omitted.