| Symbol | Parameter | Min | Max | Units |
| tWRL(5) | SCL rising edge to wiper code changed, wiper response time after instruction issued (all load instructions) | 5 | 20 | US |
| | | | |
The second stage is the external voltage refer- ence device which defines the firing threshold voltage during the speech mode and also as- sumes a residual power overvoltage suppression. This protection stage can be either a fixed or programmable breakover device. The THDTxx family acts as a fixed breakover device while the LCP1511D operates as a programma- ble protection.