M62376GP

REJ03D0881-0300 Rev.3.00 Mar 25, 2008

Page 8 of 10

DAC Data

S15

S14

S13

S12

S11

S10

S9

S8

S7

S6

S5

S4

*

Analog output voltage (Reference

voltage on the lower side = 0.0 V fixed)

0

0

0

0

0

0

0

0

X

X

X

0

(1 LSB)

0

0

0

0

0

0

0

1

X

X

X

0

(2 LSB)

0

0

0

0

0

0

1

0

X

X

X

0

(3 LSB)

:

:

:

:

:

:

:

:

:

:

:

:

:

1

1

1

1

1

1

1

0

X

X

X

0

(255 LSB)

1

1

1

1

1

1

1

1

X

X

X

0

(256 LSB)

X

X

X

X

X

X

X

X

X

X

X

1

High-impedance

(I/O expander selected)

Note:

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

S14

S13

S12

S11

S10

S9

S8

S7

S6

S5

S4

S3

S2

S1

S0

Analog output voltage

X

X

X

X

X

X

X

X

1

1

0

1

0

0

0

0

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)

S0

.....

.....

.....

.....

.....

.....

.....

S15

S0 S1 S2 S3

S12 S13 S14 S15

H-Z

n-1

n-1

n

n

n

n

n

n

n

S12 S13 S14 S15

n-1

n-1

n-1

S0

S1

S2

S3

n-1

n-1

n-1

n-1

S15

n-2

H-Z

S15

n-2

S0

n-2

S15

n-3

H-Z

EN

CLK

SI

SO

.....

.....

.....

.....

Parallel input

(

D0 to

D11

(Serial input

Parallel output

D0 to

D11

A1 to

A12