ZAMC4100GA2R datasheet(141/156 Pages) RENESAS

141 / 156 page

ZAMC4100 Datasheet

141

January 26, 2016

5.1.3.

Over-Temperature (OVT) Protection

Event

The internal chip temperature exceeds the maximum specified junction temperature for the

system (see Table 1.2).

Detection

Continuous comparison between the internal reference and the internal temperature sensor’s

voltage.

Capturing

The event is captured in the SBC, and an interrupt is propagated to the MCU.

Reaction

All drivers are automatically disabled.

5.1.4.

Over-Voltage (OV) Detection

Event

The voltage at the VDDE pin is higher than the upper supply range limit specified in Table 1.5.

Detection

Continuous comparison of the internal reference and VDDE pin voltage.

Capturing

The event is captured in the SBC, and an interrupt is propagated to the MCU.

Reaction

All drivers are automatically disabled. This feature can be turned off if not needed.

5.1.5.

Under-Voltage (UV) Detection

Event

The voltage at the VDDE pin is higher than the lower supply range limit specified in Table 1.5.

Detection

Continuous comparison of the internal reference and VDDE pin voltage.

Capturing

The event is captured in the SBC, and an interrupt is propagated to the MCU.

Reaction

All drivers are automatically disabled. This feature can be switched-off if not needed.

5.1.6.

Short to GND or Vbat Protection of Sensor Supply Pin S_P and Analog Input Pins AIN1

and AIN2

Event

The pin is shorted to the GND or Vbat rail (for the AIN1 and AIN2 pins through the external

protection resistors; see the application diagram in Figure 6.1).

Detection

A Zener-like structure limits the voltage propagated through these pins to internal blocks.

Capturing

The event is not captured.

Reaction

Limit the voltage in order to protect the internal circuitry, or limit the current through the S_P pin in

the event of a short to ground.

5.1.7.

OSCL Output Clock Failure Detection

Event

There is a failure in the OSCL clock generation. The 125kHz clock is missing.

Detection

Internal circuitry running at the OSCH clock continuously observes the output of OSCL. If OSCL

stops, a failure event is detected.

Capturing

The event is captured in the SBC, and an interrupt is propagated to the MCU.

Reaction

A response should be implemented in the MCU software depending on application requirements.

ZAMC4100GA2R Datasheet(PDF) 141 Page - Renesas Technology Corp

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