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EFM8 Universal Bee Family

EFM8UB2 Data Sheet

Feature List

The EFM8UB2 highlighted features are listed below.

? Core:

? Pipelined CIP-51 Core

? Fully compatible with standard 8051 instruction set

? 70 of instructions execute in 1-2 clock cycles

? 48 MHz maximum operating frequency

? Memory:

? Up to 64 KB flash memory, in-system re-programmable from firmware.

? Up to 4352 bytes RAM (including 256 bytes standard 8051 RAM and 4096 bytes on-chip XRAM)

? Power:

? Internal LDO regulator for CPU core voltage

? Internal 5-to-3.3 V LDO allows direct connection to USB supply net

? Power-on reset circuit and brownout detectors

? I/O: Up to 40 total multifunction I/O pins:

? Flexible peripheral crossbar for peripheral routing

? 10 mA source, 25 mA sink allows direct drive of LEDs

? Clock Sources:

? Internal 48 MHz precision oscillator ( ±1.5 accuracy without USB clock recovery, ±0.25 accuracy with USB clock recovery)

? Internal 80 kHz low-frequency oscillator

? External crystal, RC, C, and CMOS clock options

? Timers/Counters and PWM:

? 5-channel Programmable Counter Array (PCA) supporting PWM, capture/compare, and frequency output modes with watchdog timer function

? 6 x 16-bit general-purpose timers

? Communications and Digital Peripherals:

? Universal Serial Bus (USB) Function Controller with eight flexible endpoint pipes, integrated transceiver, and 1 KB FIFO RAM

? 2 x UART

? SPI? Master / Slave

? 2 x SMBus?/I2C? Master / Slave

? External Memory Interface (EMIF)

? Analog:

? 10-Bit Analog-to-Digital Converter (ADC0)

? 2 x Low-current analog comparators

? On-Chip, Non-Intrusive Debugging

? Full memory and register inspection

? Four hardware breakpoints, single-stepping

? Pre-loaded USB bootloader

? Temperature range -40 to 85 oC

? Single power supply 2.65 to 3.6 V

? QFP48, QFP32, and QFN32 packages