AMC7812B_14 Datasheet, PDF (65/93 Pages) Texas Instruments – 12-Bit Analog Monitoring and Control Solution with Multichannel ADC, DACs, and Temperature Sensors

AMC7812B
www.ti.com
SBAS625A – SEPTEMBER 2013 – REVISED SEPTEMBER 2013
DAC-n-Data Registers (Read or Write, Addresses = 33h to 3Eh, Default 0000h)
Each DAC has a DAC data register to store the data (DAC[11:0]) that are 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 or 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
0
BIT 14
0
BIT 13
0
BIT 12
0
BIT 11
DCLR
11
BIT 10
DCLR
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 or 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 '0' sets the GPIO-n pin to logic low. An
external pull-up resistor is required when using the GPIO pin as an output. Writing a '1' to the GPIO-n bit sets the
GPIO-n pin to high impedance.
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 © 2013, Texas Instruments Incorporated
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