ZHCSLZ7B September 2020 – October 2022 TPS65987DDK
PRODUCTION DATA
To enable the setting of multiple I2C addresses using a single TPS65987DDK pin, a resistor divider is placed externally on the ADCIN2 pin. The internal ADC then decodes the address from this divider value. Figure 8-28 shows the decoding.
Table 8-4 lists the external divider needed to set bits [3:1] of the I2C Unique Address.
DIV = R2/(R1+R2)(1) | I2C1 UNIQUE ADDRESS (7bit) | I2C2 UNIQUE ADDRESS (7bit) | |
---|---|---|---|
DIV_min | DIV_max | I2C1 SLAVE ADDRESS | I2C2 SLAVE ADDRESS |
Short to GND | 0.18 | 0x20 | 0x38 |
0.20 | 0.38 | 0x21 | 0x3F |
0.40 | 0.58 | 0x22 | 0x4F |
0.6 | Short to LDO_3V3 | 0x23 | 0x48 |