Universal Serial Bus Features
• USB v2.0 On-The-Go (OTG) Compliant
• Dual Role Capable – Can Act as Either Host or Peripheral
• Low-Speed (1.5 Mb/s) and Full-Speed (12 Mb/s)
USB Operation in Host mode
• Full-Speed USB Operation in Device mode
• High-Precision PLL for USB
• USB Device mode Operation from FRC Oscillator –
No Crystal Oscillator Required
• Supports up to 32 Endpoints (16 bidirectional):
- USB module can use any RAM location on the
device as USB endpoint buffers
• On-Chip USB Transceiver with Interface for Off-Chip
USB Transceiver
• Supports Control, Interrupt, Isochronous and
Bulk Transfers
• On-Chip Pull-up and Pull-Down Resistors

Analog Features
• 10/12-Bit, up to 24-Channel Analog-to-Digital (A/D)
Converter:
- 12-bit conversion rate of 200 ksps
- Auto-scan and threshold compare features
- Conversion available during Sleep
• Three Rail-to-Rail, Enhanced Analog Comparators
with Programmable Input/Output Configuration
• Charge Time Measurement Unit (CTMU):
- Used for capacitive touch sensing, up to 24 channels
- Time measurement down to 100 ps resolution

Low-Power Features
• Sleep and Idle modes Selectively Shut Down
Peripherals and/or Core for Substantial Power
Reduction and Fast Wake-up
• Doze mode Allows CPU to Run at a Lower Clock
Speed than Peripherals
• Alternate Clock modes Allow On-the-Fly Switching to
a Lower Clock Speed for Selective Power Reduction
• Wide Range Digitally Controlled Oscillator (DCO) for
Fast Start-up and Low-Power Operation

Special Microcontroller Features
• Large, Dual Partition Flash Program Array:
- Capable of holding two independent software
applications, including bootloader
- Permits simultaneous programming of one partition
while executing application code from the other
- Allows run-time switching between
Active Partitions
• 10,000 Erase/Write Cycle Endurance, Typical
• Data Retention: 20 Years Minimum
• Self-Programmable under Software Control
• Supply Voltage Range of 2.0V to 3.6V
• Operating Ambient Temperature Range of
-40°C to +85°C
• On-Chip Voltage Regulators (1.8V) for Low-Power
Operation
• Programmable Reference Clock Output
• In-Circuit Serial Programming™ (ICSP™) and
In-Circuit Emulation (ICE) via 2 Pins
• JTAG Boundary Scan Support
• Fail-Safe Clock Monitor Operation:
- Detects clock failure and switches to on-chip,
low-power RC Oscillator
• Power-on Reset (POR), Brown-out Reset (BOR),
Power-up Timer (PWRT) and Oscillator Start-up
Timer (OST)
• Programmable High/Low-Voltage Detect (HLVD)
• Flexible Watchdog Timer (WDT) with its Own
RC Oscillator for Reliable Operation