General Description
The Ember EM358x is a fully integrated System-on-Chip that integrates a 2.4 GHz, IEEE 802.15.4-2003-compliant transceiver, 32-bit ARM® CortexTM-M3 microprocessor, flash and RAM memory, and peripherals of use to designers of ZigBee-based systems.

Complete System-on-Chip
- 32-bit ARM® Cortex -M3 processor
- 2.4 GHz IEEE 802.15.4-2003 transceiver & lower MAC
- 256 or 512 kB flash, with optional read protection
- 32 or 64 kB RAM memory
- AES128 encryption accelerator
- Flexible ADC, UART/SPI/TWI serial communications, and general purpose timers
- Optional USB serial communications
- 24 highly configurable GPIOs with Schmitt trigger inputs

Industry-leading ARM® Cortex -M3 processor
- Leading 32-bit processing performance
- Highly efficient Thumb-2 instruction set
- Operation at 6, 12, or 24 MHz
- Flexible Nested Vectored Interrupt Controller

Low power consumption, advanced management
- RX Current (w/ CPU): 27 mA
- TX Current (w/ CPU, +3 dBm TX): 31 mA
- Low deep sleep current, with retained RAM and GPIO: 1.0 μA without/1.25 μA with sleep timer
- Low-frequency internal RC oscillator for low-power sleep timing
- High-frequency internal RC oscillator for fast (110 µs) processor start-up from sleep

Exceptional RF Performance
- Normal mode link budget up to 103 dB; configurable up to 110 dB
- –100 dBm normal RX sensitivity; configurable to –102 dBm (1% PER, 20 byte packet)
- +3 dB normal mode output power; configurable up to +8 dBm
- Robust Wi-Fi and Bluetooth coexistence

Innovative network and processor debug
- Packet Trace Port for non-intrusive packet trace with Ember development tools
- Serial Wire/JTAG interface
- Standard ARM debug capabilities: Flash Patch & Break-point; Data Watchpoint & Trace; Instrumentation Trace Macrocell

Application Flexibility
- Single voltage operation: 2.1–3.6 V with internal 1.8 and 1.25 V regulators
- Optional 32.768 kHz crystal for higher timer accuracy
- Low external component count with single 24 MHz crystal
- Support for external power amplifier
- Small 7x7 mm 48-pin QFN package