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STA108X Datasheet(PDF) 17 Page - STMicroelectronics

Part # STA108X
Description  Accordo2 family – Automotive dual core processor for car radio and display audio application
PDF  127 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA108X Datasheet(HTML) 17 Page - STMicroelectronics

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DS13319 Rev 2
17/127
STA108x, STA109x
System description
126
2.12
Watchdog and timers
Cortex-R4 has:
2x MTU timers each providing access to four programmable 32-bit Free-Running
decrementing Counters (FRCs)
1x Watchdog (WDT) unit that provides a way to recover from software crashes.
1x RTC counter clocked with 32 KHz Oscillator.
Cortex-M3 has:
1x MTU timers providing access to four programmable 32-bit Free-Running
decrementing Counters (FRCs)
1x Watchdog (WDT) unit that provides a way to recover from software crashes.
2.13
Power modes
Accordo2 supports the following power modes:
Normal
Software Standby
Deep Standby
Power Off
The SoC requires three power lines for internal logic (excluding analog block power lines),
which are identified as:
3V3 standby
3V3 IOs, switchable
1V2 Core, switchable
In each power state, the SoC is permanently protected from Voltage drops by means of a
brownout logic, which would trigger a system reset in case a low voltage condition is
detected.
The following table summarizes the condition of each Accordo2 power state.
Table 2. Summarized conditions of each Accordo2 power state
Power Mode
3V3 Standby
3V3 IO
1V2 Core
Analog
Clocks
RTC
Wake
Modes
Normal
ON
ON
ON
ON
Active
Active
N.A.
Soft Standby
ON
ON
ON
ON
Gated
Active
IRQ
Deep Standby
ON
OFF
OFF
OFF
OFF
Optional
WAKE
Lines
Power Off
OFF
OFF
OFF
OFF
OFF
OFF
PowerOn



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