F28M35x Concerto Microcontrollers

1 Features

Master Subsystem — Arm®Cortex®-M3
- Up to 100 MHz
- Embedded memory
  - Up to 512KB of flash (ECC)
  - Up to 32KB of RAM (ECC or parity)
  - Up to 64KB of shared RAM
  - 2KB of IPC Message RAM
- Five Universal Asynchronous Receiver/Transmitters (UARTs)
- Four Synchronous Serial Interfaces (SSIs) and a Serial Peripheral Interface (SPI)
- Two Inter-integrated Circuits (I2Cs)
- Universal Serial Bus On-the-Go (USB-OTG) + PHY
- 10/100 ENET 1588 MII
- Two Controller Area Network, D_CAN, modules (pin-bootable)
- 32-channel Micro Direct Memory Access (µDMA)
- Dual security zones (128-bit password per zone)
- External Peripheral Interface (EPI)
- Micro Cyclic Redundancy Check (µCRC) module
- Four general-purpose timers
- Two watchdog timer modules
- Three external interrupts
- Endianness: little endian
Clocking
- On-chip crystal oscillator and external clock input
- Dynamic Phase-Locked Loop (PLL) ratio changes supported
1.2-V digital, 1.8-V analog, 3.3-V I/O design
Interprocessor Communications (IPC)
- 32 handshaking channels
- Four channels generate IPC interrupts
- Can be used to coordinate transfer of data through IPC Message RAMs
Up to 74 individually programmable, multiplexed General-Purpose Input/Output (GPIO) pins
- Glitch-free I/Os
Control Subsystem — TMS320C28x 32-bit CPU
- Up to 150 MHz
- C28x core hardware built-in self-test
- Embedded memory
  - Up to 512KB of flash (ECC)
  - Up to 36KB of RAM (ECC or parity)
  - Up to 64KB of shared RAM
  - 2KB of IPC Message RAM
- IEEE-754 single-precision Floating-Point Unit (FPU)
- Viterbi, Complex Math, CRC Unit (VCU)
- Serial Communications Interface (SCI)
- SPI
- I2C
- 6-channel Direct Memory Access (DMA)
- Nine Enhanced Pulse Width Modulator (ePWM) modules
  - 18 outputs (16 high-resolution)
- Six 32-bit Enhanced Capture (eCAP) modules
- Three 32-bit Enhanced Quadrature Encoder Pulse (eQEP) modules
- Multichannel Buffered Serial Port (McBSP)
- EPI
- One security zone (128-bit password)
- Three 32-bit timers
- Endianness: little endian
Analog Subsystem
- Dual 12-bit Analog-to-Digital Converters (ADCs)
- Up to 2.88 MSPS
- Up to 20 channels
- Four Sample-and-Hold (S/H) circuits
- Up to six comparators with 10-bit Digital-to-Analog Converter (DAC)
Package
- 144-Pin RFP PowerPAD™ Thermally Enhanced Thin Quad Flatpack (HTQFP)
Temperature options:
- T: –40°C to 105°C Junction
- S: –40°C to 125°C Junction
- Q: –40°C to 125°C Free-Air
  (AEC Q100 qualification for automotive applications)

2 Applications

3 Description

The Concerto family is a multicore system-on-chip microcontroller unit (MCU) with independent communication and real-time control subsystems. The F28M35x family of devices is the first series in the Concerto family.

The communications subsystem is based on the industry-standard 32-bit Arm Cortex-M3 CPU and features a wide variety of communication peripherals, including Ethernet 1588, USB OTG with PHY, Controller Area Network (CAN), UART, SSI, I2C, and an external interface.

The real-time control subsystem is based on TI’s industry-leading proprietary 32-bit C28x floating-point CPU and features the most flexible and high-precision control peripherals, including ePWMs with fault protection, and encoders and captures—all as implemented by TI’s TMS320C2000™Entry performance MCUs and Premium performance MCUs. In addition, the C28-CPU has been enhanced with the addition of the VCU instruction accelerator that implements efficient Viterbi, Complex Arithmetic, 16-bit FFTs, and CRC algorithms.

A high-speed analog subsystem and supplementary RAM memory is shared, along with on-chip voltage regulation and redundant clocking circuitry. Safety considerations also include Error Correction Code (ECC), parity, and code secure memory, as well as documentation to assist with system-level industrial safety certification.

Device Information

PART NUMBER⁽¹⁾	PACKAGE	BODY SIZE
F28M35H52CRFP	HTQFP (144)	20.0 mm × 20.0 mm
F28M35H22CRFP	HTQFP (144)	20.0 mm × 20.0 mm
F28M35M52CRFP	HTQFP (144)	20.0 mm × 20.0 mm
F28M35E20BRFP	HTQFP (144)	20.0 mm × 20.0 mm

(1) For more information on these devices, see Mechanical, Packaging, and Orderable Information.

3.1 Functional Block Diagram

A. Some peripherals are not available on the F28M35Mx and F28M35Ex devices.

Figure 3-1 Functional Block Diagram

4 Revision History

Changes from June 23, 2020 to February 1, 2021 (from Revision K (June 2020) to Revision L (February 2021))

Added Q1 Part NumbersGo
Table 5-1: Added Q1 Part NumbersGo
Figure 10-1: Added GPN informationGo

5 Device Comparison

Table 5-1 lists the features of the F28M35x devices.

Table 5-1 Device Comparison

FEATURE		TYPE^⁽¹⁾	H52C H52C-Q1	H22C	M52C	M22C	E20B
Master Subsystem — Arm Cortex-M3
Speed (MHz)^⁽²⁾		–	100	100	75	75	60
Flash (ECC) (KB)		–	512	256	512	256	256
RAM (ECC) (KB)		–	16	16	16	16	16
RAM (Parity) (KB)		–	16	16	16	16	16
IPC Message RAM (Parity) (KB)		–	2	2	2	2	2
Security Zones		–	2	2	2	2	2
10/100 ENET 1588 MII		0	Yes	Yes	Yes	Yes	No
USB OTG FS		0	Yes	Yes	Yes	Yes	No
SSI/SPI		0	4	4	4	4	4
UART		0	5	5	5	5	5
I2C		0	2	2	2	2	2
CAN^⁽³⁾		0	2	2	2	2	2
µDMA		0	32-ch	32-ch	32-ch	32-ch	32-ch
EPI^⁽⁴⁾		0	1	1	1	1	1
µCRC module		0	1	1	1	1	1
General-Purpose Timers		–	4	4	4	4	4
Watchdog Timer modules		–	2	2	2	2	2
Control Subsystem — C28x
Speed (MHz)^⁽²⁾			150	150	75	75	60
FPU			Yes
VCU			Yes
Flash (ECC) (KB)			512	256	512	256	256
RAM (ECC) (KB)			20	20	20	20	20
RAM (Parity) (KB)			16	16	16	16	16
IPC Message RAM (Parity) (KB)			2	2	2	2	2
Security Zones			1	1	1	1	1
ePWM modules		2	9: 18 outputs
High-Resolution PWM (HRPWM) outputs		2	16 outputs
eCAP modules/PWM outputs		0	6 (32-bit)
eQEP modules		0	3 (32-bit)
Fault Trip Zones		–	12 on any of 64 GPIO pins
McBSP/SPI		1	1	1	1	1	1
SCI		0	1	1	1	1	1
SPI		0	1	1	1	1	1
I2C		0	1	1	1	1	1
DMA		0	6-ch	6-ch	6-ch	6-ch	6-ch
EPI^⁽⁴⁾		0	1	1	1	1	1
32-Bit Timers		–	3	3	3	3	3
Shared
Shared RAM (Parity) (KB)			64	64	64	64	0
12-Bit ADC 1	MSPS^⁽⁵⁾	3	2.88	2.88	2.88	2.88	2.31
	Conversion Time^⁽⁵⁾		347 ns	347 ns	347 ns	347 ns	433 ns
	Channels		10	10	10	10	10
	Sample-and-Hold		2	2	2	2	2
12-Bit ADC 2	MSPS^⁽⁵⁾	3	2.88	2.88	2.88	2.88	2.31
	Conversion Time^⁽⁵⁾		347 ns	347 ns	347 ns	347 ns	433 ns
	Channels		10	10	10	10	10
	Sample-and-Hold		2	2	2	2	2
Comparators with Integrated DACs		0	6	6	6	6	6
Voltage Regulator			Yes – Uses 3.3-V Single Supply (3.3-V/1.2-V recommended for 125°C)
Clocking			See Section 8.10
Additional Safety
Master Subsystem			2 Watchdogs, NMI Watchdog: CPU, Memory
Control Subsystem			NMI Watchdog: CPU, Memory
Shared			Critical Register and I/O Function Lock Protection; RAM Fetch Protection
Packaging
Package Type	144-Pin RFP PowerPAD HTQFP		Yes	Yes	Yes	Yes	Yes
Junction Temperature (T_J)	T: –40°C to 105°C	–	Yes	Yes	Yes	Yes	Yes
	S: –40°C to 125°C	–	Yes	Yes	Yes	Yes	Yes
	Q: –40°C to 150°C^⁽⁶⁾	–	Yes	No	No	No	No
Free-Air Temperature (T_A)	Q: –40°C to 125°C^⁽⁶⁾	–	Yes	No	No	No	No

(1) A type change represents a major functional feature difference in a peripheral module. Within a peripheral type, there may be minor differences between devices that do not affect the basic functionality of the module. These device-specific differences are listed in the C2000 Real-Time Control Peripherals Reference Guide and in the peripheral reference guides.

(2) The maximum frequency at which the Cortex-M3 core can run is 100 MHz. The clock divider before the Cortex-M3 core can only take values of /1, /2, or /4. For this reason, when the C28x is configured to run at the maximum frequency of 150 MHz, the fastest allowable frequency for the Cortex-M3 is 75 MHz. If the Cortex-M3 is configured to run at 100 MHz, the maximum frequency of the C28x is limited to 100 MHz.

(3) The CAN module uses the popular IP known as D_CAN. This document uses the names “CAN” and “D_CAN” interchangeably to reference this peripheral.

(4) Single EPI arbitrated between masters in Master and Control Subsystems.

(5) An integer divide ratio must be maintained between the C28x and ADC clock frequencies. All MSPS and Conversion Time values are based on the maximum C28x clock frequency.

(6) "Q" refers to AEC Q100 qualification for automotive applications.

Table 5-2 Possible Speed Combinations for Cortex-M3 and C28x Cores

Cortex-M3	75 MHz	100 MHz	75 MHz	60 MHz
C28x	150 MHz	100 MHz	75 MHz	60 MHz

5.1 Related Products

For information about other devices in this family of products, see the following link:

F28M36x Concerto™ Microcontrollers
The F28M3x series of microcontrollers brings together connectivity and control by combining an Arm Cortex-M3 core with the C28x core on to one device. With F28M3x, applications such as solar inverters and industrial control can keep the benefits of separating the communication and control portions while maintaining a single-chip solution. In addition, F28M3x microcontrollers enable safety certifications in your system through enhanced hardware and safety features.

The F28M36x family of devices is the second series in the Concerto family.

TMS320F2838x Microcontrollers With Connectivity Manager
The TMS320F2838x is a powerful 32-bit floating-point microcontroller unit (MCU) designed for advanced closed-loop control applications. The F2838x supports a dual-core C28x architecture along with a new Connectivity Manager that offloads critical communication tasks, significantly boosting system performance. The integrated analog and control peripherals with advanced connectivity peripherals like EtherCAT and Ethernet also let designers consolidate real-time control and real-time communications architectures, reducing requirements for multicontroller systems.