EFM32G890F64 Energy Micro, EFM32G890F64 Datasheet - Page 137

• Manufacturer Part Number: EFM32G890F64
• Description: MCU 32BIT 64KB FLASH 112-BGA
• Manufacturer: Energy Micro
• Series: Geckor

Specifications of EFM32G890F64

• Core Processor: ARM® Cortex-M3™
• Core Size: 32-Bit
• Speed: 32MHz
• Connectivity: EBI/EMI, I²C, IrDA, SmartCard, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT
• Number Of I /o: 90
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.8 V
• Data Converters: A/D 8x12b, D/A 2x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 112-LFBGA
• Processor Series: EFM32G890
• Core: ARM Cortex-M3
• Data Bus Width: 32 bit
• Data Ram Size: 16 KB
• Interface Type: I2C, UART
• Maximum Clock Frequency: 32 MHz
• Number Of Programmable I/os: 90
• Number Of Timers: 3
• Operating Supply Voltage: 1.8 V to 3.8 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

14.3.8 Control Signal Polarity
14.3.9 Pin Configuration
2010-09-06 - d0001_Rev1.00
functionality is enabled by setting the ARDYEN bit in the EBI_CTRL register. It is also possible to enable
a timeout check, which generates a bus error if the ARDY is not deasserted within the timeout period.
This prevents system stalemate condition in the case that the external device does not deassert ARDY.
The timeout functionality is disabled by setting ARDYTODIS in the EBI_CTRL register.
It is possible to individually configure the control signals to be active high/low by setting or clearing the
appropriate bits in the EBI_POLARITY register.
In order to give the EBI access to the external pins of the EFM32G, the GPIO must be configured
accordingly. The lines must be set to Push-Pull, which is described in detail in the GPIO section.
All the EBI pins are enabled in the EBI_ROUTE register. The EBI_AD, EBI_WEn and EBI_REn pins
are all enabled by the EBI_PEN bit, the EBI_CSn pins are enabled by the corresponding CSxPEN bit,
the EBI_ALE pin is enabled by the ALEPEN bit and the EBI_ARDY pin is enabled by the ARDYPEN
bit of the EBI_ROUTE register.
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