Reg: New controller selection for SIL3 safety system.

Hi Rajesh,

I will move the thread to Hercules™ Safety Microcontrollers forum for more appropriate support.
Meanwhile you can check this page:
www.ti.com/.../overview.page

Regards,
Yordan

Hello Rajesh,

First, to clarify, the Hercules devcies are not dual core. They are lockstep core devices. The subtle distinction is made because in the Hercules architecture, there is only 1 core that is actively connected within the MCU system. The second core functions solely as a diagnostic which monitors the primary/active core in realtime, all the time.

With that stated, I will highlight which of the points in your list we can meet with the finally proposed part number.

Rajesh Sharma0 said:

MCU (P/N)	Min Required Parameters
Data bus width	32bit Cortex MX Hercules MCUs are Cortex-RX based, Recommended device is Cortex-R4F with included floating point unit
Grade	Industrial TUV recommended Hercules MCUs are all Certified by TUEV SUED to IEC61508 SIL3 and in case of TMS570 devices also to ISO26262 ASIL D
Flash(B)	256Kb - 512Kb 768KB Flash with ECC
RAM(B)	128Kb-256Kb 128KB SRAM with ECC
CAN	3 Up to 3 DCAN modules with 64 Mailboxes each
SPI	2 Up to 4 SPIs (3 buffered/1 standard)
UART	1 2 UART (SCI) interfaces, 1 with LIN capability
Ethernet	NA
I/O	50 Up to 64 GPIO pins/16 with GPIO Interrupts
Max. Speed	>72MHz Up to 160MHz System Clock
RTC	1 Hercules devices have an RTI module for tick counts and RTOS counters, etc. RTC functionality would have to be provided by SW or by an external device.
PWM	4 Hercules has both dedicated PWM pins (up to 7 ePWM pins) and our proprietary programmable timer NHET with up to 50 programmable channels in 2 module instantiation for redundancy
ADC	12bit/ 16 Channel Hercules has 2 - 12-bit ADC modules with up to 24 channels including 16 shared for redundant/parallel operation
JTAG/SWD	JTAG/SWD
Operating Temperature	-40°C to 105°C RMxx devices = -40 to 105C, TMS570 devices are -40 to 125C for automotive grade.
Supply Voltage	3.3V
Package	Preferably LQFP
Cost (1000 Qty)	$ 5.0 to $ 8.0 TBD
Life /Status
Supplier details
Debugger	CCS
Debugger Price	Free with use of XDS100V2 emmulator
Development Tools	CCS, Halcogen HAL code generator, SafeTI Dignostic Library for safety diagnostic implementations, Comipler Qual Kit (CQK, compliance support packages for assessor required evidence.
Validity
Development Tool Price	TBD

Suggested controller can be updated to automotive grade in future. 

My recommendation would be for you to use an RM44Lx device specifically if you are considering only industrial, however, if you will need to do a 1 for one port of software to an automotive class applciation, it would make more since to start with the TMS570LS07x/09x class of devices as they are auto qualified and certified to both ISO26262 and IEC61508.

In regard to pricing, I am not the write person to offer pricing other than what is listed in our standard TI Store pricing online for minimum order quantities. I will forward you post to our business management so that they can then have a TI sales representative reach out to you for detailed pricing discussions on devices, tools, etc.