M62376GP 参数 Datasheet PDF下载

M62376GP

DAC Data

S15

0

0

0

:

1

1

X

Note:

S14

0

0

0

:

1

1

X

S13

0

0

0

:

1

1

X

S12

0

0

0

:

1

1

X

S11

0

0

0

:

1

1

X

S10

0

0

0

:

1

1

X

S9

0

0

1

:

1

1

X

S8

0

1

0

:

0

1

X

S7

X

X

X

:

X

X

X

S6

X

X

X

:

X

X

X

S5

X

X

X

:

X

X

X

S4

0

0

0

:

0

0

1

*

Analog output voltage (Reference

voltage on the lower side = 0.0 V fixed)

(V

DD

/ 256)

×

1 [V]

(1 LSB)

(V

DD

/ 256)

×

2 [V]

(2 LSB)

(V

DD

/ 256)

×

3 [V]

(3 LSB)

:

(V

DD

/ 256)

×

255 [V]

(255 LSB)

V

DD

[V]

(256 LSB)

High-impedance

(I/O expander selected)

X: Don’t care

Only A5 to A12 outputs are available for DAC output by S4 and Hi-Z conversion.

(a) Command to set DAC output to High-impedance (DACHiZ command)

S15

X

S14

X

S13

X

S12

X

S11

X

S10

X

S9

X

S8

X

S7

1

S6

1

S5

0

S4

1

S3

0

S2

0

S1

0

S0

0

Analog output voltage

Sets D/A output of A5 to

A12 to High-impedance.

(b) Initial status just after power is turned on:

Low level output from A1 to A4 (set to 00h)

D4/A12 to D11/A5: DAC output of high-impedance (Hi-Z), I/O of input mode (Hi-Z)

D0 to D3: input mode (Hi-Z)

(c) The DACHiZ command is effective only for DAC settings (A5 to A12), but not for the I/O ports (D0 to D11)

Note: To change the status of pins D4/A12 to D11/A5, switch both analog and digital after setup of high-impedance.

Timing Chart (Model)

EN

CLK

.....

.....

.....

SI

Parallel input

(

→

Serial output)

(Serial input

→

)

Parallel output

D0 to

D11

D0 to

D11

SO

A1 to

A12

H-Z

S0

.....

n-1

S15

n-1

S0 S1 S2 S3

.....

n

n

n

S12 S13 S14 S15

n

n

n

n

.....

.....

S15 S0 .....

n-3

n-2

S15

n-2

H-Z

S15

n-2

S0

n-1

S1

n-1

S2

n-1

S3 .....

n-1

S12 S13 S14 S15

n-1

n-1

n-1

H-Z

.....

.....

REJ03D0881-0300 Rev.3.00 Mar 25, 2008

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