AMC7812SPAPR Datasheet, PDF (8/92 Pages) Texas Instruments – 12-Bit Analog Monitoring and Control Solution with Multichannel ADC, DACs, and Temperature Sensors

AMC7812
SBAS513E – JANUARY 2011 – REVISED SEPTEMBER 2013
PIN CONFIGURATION
RGC PACKAGE
QFN-64
(TOP VIEW)
PAP PACKAGE
HTQFP-64
(TOP VIEW)
www.ti.com
RESET 1
DAV 2
CNVT 3
SDI/SDA 4
SCLK/SCL 5
DGND 6
IOV_DD 7
DV_DD 8
CS/A0 9
SDO/A1 10
A2 11
SPI/I2C 12
GPIO-0 13
GPIO-1 14
GPIO-2 15
GPIO-3 16
48 CH15
47 CH14
46 CH13
45 CH12
44 CH11
43 CH10
42 CH9
41 CH8
40 CH7
39 CH6
38 CH5
37 CH4
36 CH3
35 CH2
34 CH1
33 CH0
RESET
1
DAV
2
CNVT
3
SDI/SDA
4
SCLK/SCL
5
DGND
6
IOV_DD
7
DV_DD
8
CS/A0
9
SDO/A1
10
A2
11
SPI/I2C
12
GPIO-0
13
GPIO-1
14
GPIO-2
15
GPIO-3
16
48
CH15
47
CH14
46
CH13
45
CH12
44
CH11
43
CH10
42
CH9
41
CH8
40
CH7
39
CH6
38
CH5
37
CH4
36
CH3
35
CH2
34
CH1
33
CH0
PIN (QFN / HTQFP)
NO.
NAME
1
RESET
2
DAV
3
CNVT
4
SDI/SDA
5
SCLK/SCL
6
DGND
7
IOV_DD
8
DV_DD
9
CS/A0
10
SDO/A1
11
A2
12
SPI/I2C
13
GPIO-0
14
GPIO-1
15
GPIO-2
16
GPIO-3
PIN DESCRIPTIONS
DESCRIPTION
Reset input, active low. Logic low on this pin causes the device to perform a hardware reset.
Data available indicator, active low output. In direct mode, the DAV pin goes low (active) when the conversion
ends. In auto mode, a 1µs pulse (active low) appears on this pin when a conversion cycle finishes (see the
Primary ADC Operation and Registers sections for details). DAV stays high when deactivated.
External conversion trigger, active low. The falling edge starts the sampling and conversion of the ADC.
Serial interface data. SDI for the serial peripheral interface (SPI) when the SPI/I2C pin is high. SDA for I²C
when the SPI/I2C pin is low.
Serial clock input of the main serial interface. SPI clock when the SPI/I2C pin is high; I²C clock when the
SPI/I2C pin is low.
Digital ground
Interface power supply
Digital power supply (+3V to +5V). Must be the same value as AV_DD.
Chip select signal for SPI when the SPI/I2C pin is high. Slave address selection A0 for I²C when the SPI/I2C
pin is low.
SDO for SPI when the SPI/I2C pin is high. Slave address selection A1 for I²C when the SPI/I2C pin is low.
Slave address selection A2 for I²C when the SPI/I2C pin is low.
Interface selection pin. Digital input. When this pin is tied to IOV_DD, the SPI is enabled and the I²C interface is
disabled. When this pin is tied to ground, the SPI is disabled and the I²C interface is enabled.
General-purpose digital input/output. This pin is a bidirectional open-drain, digital input/output, and requires an
external pull-up resistor. See the General Purpose Input/Output Pins section for more details.
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