General description

CYT4BF is a family of TRAVEO™ T2G microcontrollers targeted at automotive systems such as high-end

body-control units. CYT4BF has two Arm® Cortex®-M7 CPUs for primary processing, and an Arm®Cortex®-M0+ CPU

for peripheral and security processing. These devices contain embedded peripherals supporting Controller Area

Network with Flexible Data rate (CAN FD), Local Interconnect Network (LIN), Gigabit Ethernet, and FlexRay.

TRAVEO™ T2G devices are manufactured on an advanced 40-nm process. CYT4BF incorporates a low-power flash

memory, multiple high-performance analog and digital peripherals, and enables the creation of a secure

computing platform.

Features

• CPU subsystem

- Two 350-MHz 32-bit Arm® Cortex®-M7 CPUs, each with

• Single-cycle multiply

• Single/double-precision floating point unit (FPU)

• 16-KB data cache, 16-KB instruction cache

• Memory protection unit (MPU)

• 16-KB instruction and 16-KB data tightly-coupled memories (TCM)

- 100-MHz 32-bit Arm® Cortex® M0+ CPU with

• Single-cycle multiply

• Memory protection unit (MPU)

- Inter-processor communication in hardware

- Three DMA controllers

• Peripheral DMA controller #0 (P-DMA0) with 143 channels

• Peripheral DMA controller #1 (P-DMA1) with 65 channels

• Memory DMA controller (M-DMA0) with 8 channels

• Integrated memories

- 8384 KB of code-flash with an additional 256 KB of work-flash

• Read-While-Write (RWW) allows updating the code-flash/work-flash while executing from it

• Single- and dual-bank modes (specifically for Firmware update Over The Air [FOTA])

• Flash programming through SWD/JTAG interface

- 1024-KB of SRAM with selectable retention granularity

• Cryptography engine

- Supports Enhanced Secure Hardware Extension (eSHE) and Hardware Security Module (HSM)

- Secure boot and authentication

• Using digital signature verification

• Using fast secure boot

- AES: 128-bit blocks, 128-/192-/256-bit keys

- 3DES: 64-bit blocks, 64-bit key

- Vector unit supporting asymmetric key cryptography such as Rivest-Shamir-Adleman (RSA) and Elliptic Curve

(ECC)

- SHA-1/2/3: SHA-512, SHA-256, SHA-160 with variable length input data

- CRC: supports CCITT CRC16 and IEEE-802.3 CRC32

- True random number generator (TRNG) and pseudo random number generator (PRNG)

- Galois/Counter Mode (GCM)

Features

• Functional safety for ASIL-B

- Memory protection unit (MPU)

- Shared memory protection unit (SMPU)

- Peripheral protection unit (PPU)

- Watchdog timer (WDT)

- Multi-counter watchdog timer (MCWDT)

- Low-voltage detector (LVD)

- Brown-out detection (BOD)

- Over-voltage detection (OVD)

- Clock supervisor (CSV)

- Hardware error correction (SECDED ECC) on all safety-critical memories (SRAM, flash, TCM)

• Low-Power 2.7-V to 5.5-V operation

- Low-power Active, Sleep, Low-power Sleep, DeepSleep, and Hibernate modes for fine-grained power

management

- Configurable options for robust BOD

• Two threshold levels (2.7 V and 3.0 V) for BOD on VDDD and VDDA

• One threshold level (1.1 V) for BOD on VCCD

• Wakeup

- Up to two pins to wake from Hibernate mode

- Up to 240 GPIO pins to wake from Sleep modes

- Event Generator, SCB, watchdog timer, RTC alarms to wake from DeepSleep modes

• Clocks

- Internal main oscillator (IMO)

- Internal low-speed oscillator (ILO)

- External crystal oscillator (ECO)

- Watch crystal oscillator (WCO)

- Phase-locked loop (PLL)

- Frequency-locked loop (FLL)

• Communication interfaces

- Up to 10 CAN FD channels

• Increased data rate (up to 8 Mbps) compared to classic CAN, limited by physical layer topology and

transceivers

• Compliant to ISO 11898-1:2015

• Supports all the requirements of Bosch CAN FD Specification V1.0 for non-ISO CAN FD

• ISO 16845:2015 certificate available

- Up to 11 runtime-reconfigurable SCB (serial communication block) channels, each configurable as I2C, SPI,

or UART

- Up to 20 independent LIN channels

• LIN protocol compliant with ISO 17987

- Up to two 10/100/1000 Mbps Ethernet MAC interfaces conforming to IEEE-802.3az

• Supports the following PHY interfaces:

Media-independent interface (MII)

Reduced media-independent interface (RMII)

Gigabit media-independent interface (GMII)

Reduced gigabit media-independent interface (RGMII)

• Compliant with IEEE-802.1BA Audio Video Bridging (AVB)

• Compliant with IEEE-1588 Precision Time Protocol (PTP)

- FlexRay interface (V2.1) configurable for single or dual data-channels for fault tolerance, supporting data rates up to 10 Mbps

• External memory interface

- One SPI (single, dual, quad, or octal) or HYPERBUS™ interface

- On-the-fly encryption and decryption

- Execute-In-Place (XIP) from external memory

• SDHC interface

- One Secure Digital High Capacity (SDHC) interface supporting embedded MultiMediaCard (eMMC), Secure

Digital (SD), or SDIO (Secure Digital Input Output)

• Compliant to eMMC 5.1, SD 6.0, and SDIO 4.10 specifications

- Data rates up to SD High Speed 50 MHz, or eMMC 52 MHz DDR

• Audio interface

- Three Inter-IC Sound (I2S) Interfaces for connecting digital audio devices

- I2S, left justified, or time division multiplexed (TDM) audio formats

- Independent transmit or receive operation, each in master or slave mode

• Timers

- Up to 102 16-bit and 16 32-bit timer/counter pulse-width modulator (TCPWM) blocks

• Up to 15 16-bit counters for motor control

• Up to 87 16-bit counters and 16 32-bit counters for regular operations

• Supports timer, capture, quadrature decoding, pulse-width modulation (PWM), PWM with dead time

(PWM_DT), pseudo-random PWM (PWM_PR), and shift-register (SR) modes

- Up to 16 Event Generation (EVTGEN) timers supporting cyclic wakeup from DeepSleep

• Events trigger a specific device operation (such as execution of an interrupt handler, a SAR ADC conversion,

and so on)

• Real time clock (RTC)

- Year/Month/Date, Day-of-week, Hour:Minute:Second fields

- 12- and 24-hour formats

- Automatic leap-year correction

• I/O

- Up to 240 programmable I/Os

- Three I/O types

• GPIO Standard (GPIO_STD)

• GPIO Enhanced (GPIO_ENH)

• High-Speed I/O Standard (HSIO_STD)

• Regulators

- Generates a 1.1-V nominal core supply from a 2.7-V to 5.5-V input supply

- Three regulators:

• DeepSleep

• Core internal

• Core external

• Programmable analog

- Three SAR A/D converters with up to 99 external channels (96 I/Os + 3 I/Os for motor control)

• Each ADC supports 32 logical channels, with 32 + 1 physical connections. Any external channel can be

connected to any logical channel in the respective SAR.

- Each ADC supports 12-bit resolution and sampling rates of up to 1 Msps

- Each ADC also supports six internal analog inputs like

• Bandgap reference to establish absolute voltage levels

• Calibrated diode for junction temperature calculations

• Two AMUXBUS inputs and two direct connections to monitor supply levels

- Each ADC supports addressing of external multiplexers

- Each ADC has a sequencer supporting autonomous scanning of configured channels

- Synchronized sampling of all ADCs for motor-sense applications

Smart I/O

- Up to five Smart I/O blocks, which can perform Boolean operations on signals going to and from I/Os

- Up to 36 I/Os (GPIO_STD) supported

Debug interface

- JTAG controller and interface compliant to IEEE-1149.1-2001

- Arm® SWD (serial wire debug) port

- Supports Arm® Embedded Trace Macrocell (ETM) Trace

• Data trace using SWD

• Instruction and data trace using JTAG

Compatible with industry-standard tools

- GHS MULTI or IAR EWARM for code development and debugging

Packages

- 176-TEQFP, 24 × 24 × 1.7 mm (max), 0.5-mm lead pitch

- 272-BGA, 16 × 16 × 1.7 mm (max), 0.8-mm ball pitch

- 320-BGA, 17 × 17 × 1.7 mm (max), 0.8-mm ball pitch