EFM32G890F64 Energy Micro, EFM32G890F64 Datasheet - Page 118

• 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

31:16
15:0
Bit
2010-09-06 - d0001_Rev1.00
Reserved
LOCKKEY
Write
CMU_HFPERCLKDIV, CMU_HFRCOCTRL, CMU_LFRCOCTRL, CMU_AUXHFRCOCTRL, CMU_OSCENCMD, CMU_CMD,
CMU_LFCLKSEL, CMU_HFCORECLKEN0, CMU_HFPERCLKEN0, CMU_LFACLKEN0, CMU_LFBCLKEN0, CMU_LFAPRESC0,
CMU_LFBPRESC0, and CMU_PCNTCTRL from editing. Write the unlock code to unlock. When reading the register, bit 0 is set
when the lock is enabled.
Name
Mode
Read Operation
UNLOCKED
LOCKED
Write Operation
LOCK
UNLOCK
any
other
value
0x0000
Reset
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
Value
0
1
0
0x580E
than
the
RW
Access
unlock
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118
Configuration Lock Key
Description
code
to
lock
Description
CMU registers are unlocked
CMU registers are locked
Lock CMU registers
Unlock CMU registers
CMU_CTRL,
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CMU_HFCORECLKDIV,