SBOS743A July 2015 – May 2020 INA226-Q1
PRODUCTION DATA.
BIT NO. | D15 | D14 | D13 | D12 | D11 | D10 | D9 | D8 | D7 | D6 | D5 | D4 | D3 | D2 | D1 | D0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BIT
NAME |
RST | — | — | — | AVG2 | AVG1 | AVG0 | VBUSCT2 | VBUSCT1 | VBUSCT0 | VSHCT2 | VSHCT1 | VSHCT0 | MODE3 | MODE2 | MODE1 |
POR VALUE | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 1 |
The Configuration Register settings control the operating modes for the device. This register controls the conversion time settings for both the shunt and bus voltage measurements as well as the averaging mode used. The operating mode that controls what signals are selected to be measured is also programmed in the Configuration Register .
The Configuration Register can be read from at any time without impacting or affecting the device settings or a conversion in progress. Writing to the Configuration Register halts any conversion in progress until the write sequence is completed resulting in a new conversion starting based on the new contents of the Configuration Register (00h). This halt prevents any uncertainty in the conditions used for the next completed conversion.
RST: | Reset Bit |
Bit 15 | Setting this bit to '1' generates a system reset that is the same as power-on reset. Resets all registers to default values; this bit self-clears. |
AVG: | Averaging Mode |
Bits 9–11 | Determines the number of samples that are collected and averaged. Table 6 shows all the AVG bit settings and related number of averages for each bit setting. |
AVG2
D11 |
AVG1
D10 |
AVG0
D9 |
NUMBER OF
AVERAGES(1) |
---|---|---|---|
0 | 0 | 0 | 1 |
0 | 0 | 1 | 4 |
0 | 1 | 0 | 16 |
0 | 1 | 1 | 64 |
1 | 0 | 0 | 128 |
1 | 0 | 1 | 256 |
1 | 1 | 0 | 512 |
1 | 1 | 1 | 1024 |
VBUSCT: | Bus Voltage Conversion Time |
Bits 6–8 | Sets the conversion time for the bus voltage measurement. Table 7 shows the VBUSCT bit options and related conversion times for each bit setting. |
VBUSCT2
D8 |
VBUSCT1
D7 |
VBUSCT0
D6 |
CONVERSION TIME(1) |
---|---|---|---|
0 | 0 | 0 | 140 µs |
0 | 0 | 1 | 204 µs |
0 | 1 | 0 | 332 µs |
0 | 1 | 1 | 588 µs |
1 | 0 | 0 | 1.1 ms |
1 | 0 | 1 | 2.116 ms |
1 | 1 | 0 | 4.156 ms |
1 | 1 | 1 | 8.244 ms |
VSHCT: | Shunt Voltage Conversion Time |
Bits 3–5 | Sets the conversion time for the shunt voltage measurement. Table 8 shows the VSHCT bit options and related conversion times for each bit setting. |
VSHCT2
D8 |
VSHCT1
D7 |
VSHCT0
D6 |
CONVERSION TIME(1) |
---|---|---|---|
0 | 0 | 0 | 140 µs |
0 | 0 | 1 | 204 µs |
0 | 1 | 0 | 332 µs |
0 | 1 | 1 | 588 µs |
1 | 0 | 0 | 1.1 ms |
1 | 0 | 1 | 2.116 ms |
1 | 1 | 0 | 4.156 ms |
1 | 1 | 1 | 8.244 ms |
MODE: | Operating Mode |
Bits 0-2 | Selects continuous, triggered, or power-down mode of operation. These bits default to continuous shunt and bus measurement mode. The mode settings are shown in Table 9. |
MODE3
D2 |
MODE2
D1 |
MODE1
D0 |
MODE(1) |
---|---|---|---|
0 | 0 | 0 | Power-Down (or Shutdown) |
0 | 0 | 1 | Shunt Voltage, Triggered |
0 | 1 | 0 | Bus Voltage, Triggered |
0 | 1 | 1 | Shunt and Bus, Triggered |
1 | 0 | 0 | Power-Down (or Shutdown) |
1 | 0 | 1 | Shunt Voltage, Continuous |
1 | 1 | 0 | Bus Voltage, Continuous |
1 | 1 | 1 | Shunt and Bus, Continuous |