EFM32LG995F256 Energy Micro, EFM32LG995F256 Datasheet - Page 5

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EFM32LG995F256

Manufacturer Part Number
EFM32LG995F256
Description
ARM Microcontrollers - MCU 256KB FL 32KB RAM
Manufacturer
Energy Micro
Datasheet

Specifications of EFM32LG995F256

Rohs
yes
Core
ARM Cortex M3
Processor Series
Leopard Gecko (LG)
Data Bus Width
32 bit
Maximum Clock Frequency
48 MHz
Program Memory Size
256 KB
Data Ram Size
32 KB
On-chip Adc
Yes
Operating Supply Voltage
1.85 V to 3.8 V
Operating Temperature Range
- 40 C to + 85 C
Package / Case
BGA-120
Mounting Style
SMD/SMT
A/d Bit Size
12 bit
Interface Type
I2C, SPI, USB, UART
Number Of Programmable I/os
93
Program Memory Type
Flash

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2.1.12 Universal Serial Bus Controller (USB)
2.1.13 Inter-Integrated Circuit Interface (I2C)
2.1.14 Universal Synchronous/Asynchronous Receiver/Transmitter (US-
ART)
2.1.15 Pre-Programmed Serial Bootloader
2.1.16 Universal Asynchronous Receiver/Transmitter (UART)
2.1.17 Low Energy Universal Asynchronous Receiver/Transmitter
(LEUART)
2.1.18 Timer/Counter (TIMER)
2012-09-11 - EFM32LG995FXX - d0124_Rev1.00
hold timing. Direct Drive is supported for TFT displays which do not have their own frame buffer. In
that case TFT Direct Drive can transfer data from either on-chip memory or from an external memory
device to the TFT at low CPU load. Automatic alpha-blending and masking is also supported for transfers
through the EBI interface.
The USB is a full-speed USB 2.0 compliant OTG host/device controller. The USB can be used in Device,
On-the-go (OTG) Dual Role Device or Host-only configuration. In OTG mode the USB supports both
Host Negotiation Protocol (HNP) and Session Request Protocol (SRP). The device supports both full-
speed (12MBit/s) and low speed (1.5MBit/s) operation. The USB device includes an internal dedicated
Descriptor-Based Scatter/Garther DMA and supports up to 6 OUT endpoints and 6 IN endpoints, in
addition to endpoint 0. The on-chip PHY includes all OTG features, except for the voltage booster for
supplying 5V to VBUS when operating as host.
The I
both a master and a slave, and supports multi-master buses. Both standard-mode, fast-mode and fast-
mode plus speeds are supported, allowing transmission rates all the way from 10 kbit/s up to 1 Mbit/s.
Slave arbitration and timeouts are also provided to allow implementation of an SMBus compliant system.
The interface provided to software by the I
process and close to automatic transfers. Automatic recognition of slave addresses is provided in all
energy modes.
The Universal Synchronous Asynchronous serial Receiver and Transmitter (USART) is a very flexible
serial I/O module. It supports full duplex asynchronous UART communication as well as RS-485, SPI,
MicroWire and 3-wire. It can also interface with ISO7816 SmartCards, I2S devices and IrDA devices.
The bootloader presented in application note AN0003 is pre-programmed in the device at factory. Auto-
baud and destructive write are supported. The autobaud feature, interface and commands are described
further in the application note.
The Universal Asynchronous serial Receiver and Transmitter (UART) is a very flexible serial I/O module.
It supports full- and half-duplex asynchronous UART communication.
The unique LEUART
a strict power budget. Only a 32.768 kHz clock is needed to allow UART communication up to 9600 baud/
s. The LEUART includes all necessary hardware support to make asynchronous serial communication
possible with minimum of software intervention and energy consumption.
The 16-bit general purpose Timer has 3 compare/capture channels for input capture and compare/Pulse-
Width Modulation (PWM) output. TIMER0 also includes a Dead-Time Insertion module suitable for motor
control applications.
2
C module provides an interface between the MCU and a serial I
TM
, the Low Energy UART, is a UART that allows two-way UART communication on
Preliminary
2
C module, allows both fine-grained control of the transmission
...the world's most energy friendly microcontrollers
5
2
C-bus. It is capable of acting as
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