SMP9212S データシートの表示（PDF） - Summit Microelectronics

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SMP9212S

Dual 10-Bit Nonvolatile DAC

Summit Microelectronics 

SMP9210, SMP9211, SMP9212

Preliminary

CONFIGURATION REGISTER

Note: All parts are normally shipped with the Configura-

tion Register locked. Unlocked user configurable parts

are available on a special order basis. Contact the

factory.

Master

SDA

Optional

S

T

R/

O

W

Command Byte

P

1

0

0

1

AA

21

A

0

1

CC CCCCCC

76 543210

Slave

A

A

C

C

K

K

2048 Fig05

Figure 5. Configuration Register (see Table 3)

MSB

C7

C6

C5

C4

C3

C2

C1

x

x

x

x

0

0

x

0

1

x

x

x

x

1

0

1

1

0

1

x

x

PDA3* PDA2* PDA1* PDA0* x

* Note: Never set the DAC address to 1001BIN. The Slave address for the

configuration register is 1001BIN, and a collision will occur on the I2C bus.

LSB

C0

0

1

x

Function

Configuration register accessible

Configuration register locked

Power on recall: DACs set to all 0s

Power on recall: DACs set to all 1s

Power on recall: DACs set to mid scale

Power on recall: DACs set to NV register

At power down VOUT = low impedance

At power down VOUT = high impedance

Programmble DAC address

2048 Table03 3.1

Table 3. Configuration Register

10

2048 3.3 10/03/01

SUMMIT MICROELECTRONICS, Inc.

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