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1 Features

Microcontroller

? Powerful 160MHz Arm? Cortex?-M33 processor

with FPU, TrustZone?, and AI acceleration

? High-speed quad-SPI and octal-SPI for XiP flash

with on-the-fly decryption

? Flexible configuration of low-latency TCM (up to

32KB) and Cache (32KB or 64KB) for improved

code execution performance

? Over 1MB embedded SRAM including 128KB

TCM for Wi-Fi, BLE, networking, and application

data

Peripherals

? Up to 38 I/Os with flexible multiplexing options

? 8 × general-purpose timers and pulse-width

modulation (PWM)

? 2 × universal asynchronous receiver-transmitter

(UART)

? 2 × Serial Peripheral Interface (SPI)

? 2 × inter-integrated circuit (I2C)

? Inter-IC sound (I2S)

? Pulse density modulation (PDM)

? Secure digital and multimedia card (SD/MMC)

? Secure digital input output (SDIO) 2.0

? Controller area network (CAN) 2.0

? 8-channel, 12-bit analog-to-digital converter (ADC)

System Services

? Direct memory access (DMA)

? One-time-programmable memory (OTP)

? Real-time clock (RTC) and watchdog timer (WDT)

Radio

? Wi-Fi 6 (802.11ax)

– 2.4GHz and 5GHz, single-stream 20MHz

channels with application throughput up to

20Mbps (UDP)

– Compatible with IEEE 802.11 b/g/n/ax

? Orthogonal frequency-division multiple

access (OFDMA)

? Target wake time (TWT)

? Trigger frames

? Basic service set (BSS) color

– Integrated PA for a complete WLAN system

with up to 20dBm output power at 1 DSSS

– Role support: STA, softAP with up to four

stations, Wi-Fi direct, multi-role AP + STA

– Support for personal and enterprise Wi-Fi

security: WPA and WPA2 PSK, WPA2

Enterprise, WPA3 personal or enterprise

– Wi-Fi TX Power:

– ? 20dBm at 1 DSSS

? 16dBm at 54 OFDM

– Wi-Fi RX Sensitivity:

? –98.6dBm at 1 DSSS

? –77.2dBm at 54 OFDM

? Bluetooth? low energy

– Bluetooth low energy 5.4 certified stack

– Supports long-range and high-speed PHYs (up

to 2Mbps)

Security Features

? ARM TrustZone

? Hardware security module supporting all of the

following:

– ECC, RSA, AES, SHA2/3, MD5, CRC 16/32,

and TRNG

– Secure key storage

? Initial secure programming

? Secure boot

? Software IP and cloning protection

? Debug security through JTAG and debug port lock

? OTP with the ability to program root-of-trust public

key

? Secure over-the-air (OTA) updates

? Anti-rollback protection

Clock Source

? 52MHz crystal

? Internal 32.768kHz low-frequency oscillator,

external XTAL, or slow clock options

Power Management

? Support for 3.3V and 1.8V on multiple I/O domains

? Supplies: VPA: 3.3V, VMAIN: 1.8V, VIO: 1.8/3.3V

Key Benefits

? Complete software development kit with opensource

TCP/IP and TLS stacks

? Operating temperature: –40°C to +105°C

? Support for 3-wire PTA coexistence interface for

use with external 2.4GHz radios (for example

Thread or Zigbee?)

? Antenna selection capability

Package

? Easy to design with 56-pin, 7mm × 7mm quad flat

no leaded (QFN) package

2 Applications

? Building Automation

– Thermostat

– HVAC motor control

– Wireless security camera

– Video Doorbell

– Garage door system

? Appliances

– Refrigerator and freezer

– Oven

– Washer and dryer

– Residential water heater

– Air conditioner indoor unit

– Coffee machine

– Vacuum robot

– Robotic lawn mower

? Grid Infrastructure

– Electricity meter

– String Inverter

– Micro Inverter

– Battery energy storage systems

– EV charging infrastructure

? Medical

– Infusion pump

– Electronic hospital bed and bed control

– Multiparameter patient monitor

– CPAP machine

– Telehealth systems

– Ultrasound scanner

– Ultrasound smart probe

– Electric toothbrush

? Retail automation and payment

? Connected peripherals and printers

? Factory automation and control

? Asset tracking

3 Description

The SimpleLink? Wi-Fi system-on-chip CC35xx family is where affordability meets reliability, enabling engineers

to connect more applications with confidence. CC35xx are single-chip Wi-Fi 6 and Bluetooth Low Energy 5.4

wireless microcontrollers (MCUs). The CC3550E and CC3551E are the first dual-band devices in this pin-to-pin

compatible family.

? CC3550E: 2.4GHz and 5GHz Wi-Fi 6 wireless MCU

? CC3551E: 2.4GHz and 5GHz Wi-Fi 6 and Bluetooth low energy 5.4 wireless MCU

The CC355xE offers the latest standards from Wi-Fi and BLE while maintaining compatibility with Wi-Fi 4

(802.11 b/g/n) and Wi-Fi 5 (802.11 ac). These CC355xE are the 10th-generation connectivity combo chip from

Texas Instruments. As such, the CC355xE is based on proven technology. These devices are an excellent

choice to use in cost-sensitive embedded applications with RTOS software. CC355xE brings the efficiency of

Wi-Fi 6 to embedded device applications for the Internet of Things (IoT), with a small PCB footprint and highly

optimized bill of materials.