AMC7812 Datasheet, PDF (65/92 Pages) Texas Instruments – 12-Bit ANALOG MONITORING AND CONTROL SOLUTION with Multichannel ADC, DACs, and Temperature Sensors

AMC7812
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SBAS513D – JANUARY 2011 – REVISED OCTOBER 2012
DAC-n-DATA REGISTERS (Read/Write, Addresses = 33h to 3Eh, Default 0000h)
Each DAC has a DAC data register to store the data [DAC11:DAC0] that is loaded into the DAC Latches.
MSB
BIT 15 BIT 14 BIT 13 BIT 12 BIT 11 BIT 10
0
0
0
0
D11 D10
BIT 9
D9
BIT 8
D8
BIT 7
D7
BIT 6
D6
BIT 5
D5
BIT 4
D4
BIT 3
D3
BIT 2
D2
BIT 1
D1
LSB
BIT 0
D0
Bits[11:0]
DAC data.
DAC-n-CLR-SETTING REGISTERS (Read/Write, Addresses = 3Fh to 4Ah, Default 0000h)
Each DAC has a DAC-CLR-Setting Register to store the data to be loaded into the DAC Latch when the DAC is
cleared.
MSB
BIT 15 BIT 14 BIT 13 BIT 12 BIT 11 BIT 10
0
0
0
0
DCLR DCLR
11
10
BIT 9
DCLR
9
BIT 8
DCLR
8
BIT 7
DCLR
7
BIT 6
DCLR
6
BIT 5
DCLR
5
BIT 4
DCLR
4
BIT 3
DCLR
3
BIT 2
DCLR
2
BIT 1
DCLR
1
LSB
BIT 0
DCLR
0
GPIO REGISTER (Read/Write, Address = 4Bh, Default = 00FFh)
MSB
BIT 15 BIT 14 BIT 13 BIT 12 BIT 11 BIT 10 BIT 9
0
0
0
0
0
0
0
BIT 8
0
BIT 7
GPIO-
7
BIT 6
GPIO-
6
BIT 5
GPIO-
5
BIT 4
GPIO-
4
BIT 3
GPIO-
3
BIT 2
GPIO-
2
BIT 1
GPIO-
1
LSB
BIT 0
GPIO-
0
For write operations, the GPIO pin operates as an output. Writing a '1' to the GPIO-n bit sets the GPIO-n pin to
high impedance. Writing a '0' sets the GPIO-n pin to logic low. An external pull-up resistor is required when using
the GPIO pin as an output.
For read operations, the GPIO pin operates as an input. Read the GPIO-n bit to receive the status of the GPIO-n
pin. Reading a '0' indicates that the GPIO-n pin is low; reading a '1' indicates that the GPIO-n pin is high.
After power-on reset, or any forced hardware or software reset, the GPIO-n bit is set to '1' and is in a high-
impedance state.
When D1 is enabled, GPIO-4 and GPIO-5 are ignored.
When D2 is enabled, GPIO-6 and GPIO-7 are ignored.
Copyright © 2011–2012, Texas Instruments Incorporated
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