SPSB100 datasheet(51/213 Pages) STMICROELECTRONICS

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If the temperature of a cluster reaches the thermal warning threshold then a dedicated status flag (TW_CLx bit) is

set and an interrupt is issued.

If the temperature of a cluster reaches the thermal shutdown threshold then a dedicated status flag is set, the

outputs assigned to that cluster are shut down and depending on their configuration bit REGFAIL_GO_REC all

outputs are shut down or not as described in the Section 3.6.2.5: Regulator faults management.

Figure 29. Thermal cluster identification

Thermal Cluster 0

Thermal Cluster 1

Thermal Cluster 2

Thermal Cluster 3

Thermal Cluster 4

SGND

CSN

SDO

SDI

CLK

NRST

VIO

N.C.

OUT_HS

VREG

FIN1

NFSO1

FB1

LDO2

GBY

LDO1

FBB

FB2

IRQ

IGN

SWDBG

GND

GLOBAL

DLB

N.C.

Table 9. Thermal cluster definition

Th_CL0

Th_CL1

Th_CL2

Th_CL3

Th_CL4

LDO1, central

BUCK1

BUCK2

BUCK3

LDO2

TW digitally managed

TSDC analog managed

TW and TSD

Both digitally managed

TW and TSD

Both digitally managed

TW and TSD

Both digitally managed

TW and TSD

Both digitally managed

Clusters temperature is converted through the ADC and readable by SPI (through TEMP_CLx[9..0] bits), only in

active full-power mode

Note:

•

In the DEEP-SLEEP state all clusters are disabled.

•

In active low power all clusters are disabled except Th_CL0 to detect TSDC.

Monitoring of central thermal cluster is insured by analog comparator, while other thermal clusters are monitored

through the ADC.

Latent fault detection of TSDC thermal comparator is covered by Analog-BIST.

Latent fault detection of digital thermal monitor and ADC handler is covered by a Digital-BIST.

SPSB100

Protection, diagnosis and monitoring signals

DS14640 - Rev 2

page 51/213

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