STM6700, STM6710

Description

Doc ID 16887 Rev 2

7/21

Pin descriptions

V1IN, V3IN,V4IN (VxIN)

The VxIN pins are used for nominal input voltages for 1.8 V, 2.5 V and 5.0 V supplies. The

voltage at this pin is compared against an internal factory-programmed voltage trip point,

Vrst.

RESET is first asserted low when the device is initially powered and VxIN < 1 V and then at

any time thereafter when VxIN falls below Vrst. The device is designed with typical

hysteresis of 0.3% with respect to its threshold to help prevent oscillation due to noise and is

immune to brief power supply transients.

V2IN

The V2IN is used to power the STM6710 device. In normal operations V2IN is also

not monitored.

RESET

The RESET output is an open drain output that asserts low whenever a monitored supply

falls below the minimum threshold. STM6710 provides an extended reset timeout period of

typically 200 ms.

Figure 3.

Functional block diagram

1.

The STM6700 and STM6710Q are powered via the V2IN input which is the supply voltage. When this pin is