STA1090 datasheet(15/127 Pages) STMICROELECTRONICS

Part #	STA1090

Description	Accordo2 family – Automotive dual core processor for car radio and display audio application

PDF	127 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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15 / 127 page

DS13319 Rev 2

15/127

STA108x, STA109x

System description

126

2.7

Embedded isolated vehicle interface subsystem

Accordo2 allows isolating critical code from the main application by implementing a

dedicated subsystem based on ARM Cortex-M3, along with:



256 KB dedicated embedded SRAM



Interrupt controller



timers



CAN controller



Dedicated GPIOs



Dedicated Wakeup lines



Back-up RAM in always on domain



Local RTC

In order to guarantee the security of CAN network, all of the above can be completely

isolated from the rest of the system, in such a way that no application running on Cortex-R4

can access CAN specific resources by any means (STA10x5). This subsystem can also be

dedicated to implement secure features, such as boot authentication, as well as interrupt

intensive tasks to offload main CPU. The secure subsystem communicates with the

application running on Cortex-R4 using a Hardware Mailbox interrupt based mechanism.

Figure 3. Vehicle Interface subsystem isolation

PERIPHERALS

MEMORY

NVM

CSS

SQI

FSMC

SDRAM

SECURITY

CONFIG

REGISTERS

GPIO_S

RTC

CortexR4

eSRAM0

CS0

CAN1

Cortex-M3

I2C0

REGS

CS0

CS1

UART0

EFT3

EFT4

GAPGPS02787

STA1090 Datasheet(PDF) 15 Page - STMicroelectronics

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