Power State Control Of The Wireless Cpu; Figure 5: Gr/Gs64 Hw On/Off Sequence Logic - Wavecom Gx64 Application Note

3.2

Power state control of the Wireless CPU

There are a maximum of six signals that affects the HW power state of the GR/GS64
family of Wireless CPUs; four HW and two SW:
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CAUTION
To power up the hardware VCC must be within 3.2V to 4.5V, and the Power
Management ASIC die temperature must be below 130°C.

Figure 5: GR/GS64 HW On/Off Sequence Logic

Gx64 APPLICATION NOTE
Power Management
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ON/OFF (HW, all Wireless CPUs)
CHG_IN (HW, all Wireless CPUs)
PON_H (HW, GS64 only)
ALARM (HW, GS64 and GR64002 as external, all as internal)
AT+CFUN (SW, all Wireless CPUs)
AT*E2RESET (SW, all Wireless CPUs)
Under normal operating conditions, the die temperature should not
exceed 125°C. In the event of an external fault or as a result of device
misuse, the die temperature could exceed this value by a large margin.
Should the die temperature exceed 155°C while the unit is powered up,
the thermal protection circuit will shut-down all functions and remain
disabled until the temperature drops below 130°C, at which point the
device can be restarted. This feature is listed as TP (Thermal
Protection) througout this document.
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