EFM32G890F64 Energy Micro, EFM32G890F64 Datasheet - Page 114

• 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

11.5.23 CMU_LFAPRESC0 - Low Frequency A Prescaler Register 0 (Async
Reg)
31:10
9:8
7:4
3:0
Offset
0x068
Reset
Access
Name
Bit
2010-09-06 - d0001_Rev1.00
Reserved
LCD
Configure Liquid Crystal Display Controller prescaler
LETIMER0
Configure Low Energy Timer 0 prescaler
RTC
Configure Real-Time Counter prescaler
Name
Value
0
1
2
3
Value
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Value
0
1
2
3
4
5
6
7
8
9
Mode
DIV16
DIV32
DIV64
DIV128
Mode
DIV1
DIV2
DIV4
DIV8
DIV16
DIV32
DIV64
DIV128
DIV256
DIV512
DIV1024
DIV2048
DIV4096
DIV8192
DIV16384
DIV32768
Mode
DIV1
DIV2
DIV4
DIV8
DIV16
DIV32
DIV64
DIV128
DIV256
DIV512
0x0
0x0
0x0
Reset
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
RW
RW
RW
Access
Description
LFACLK
LFACLK
LFACLK
LFACLK
Description
LFACLK
LFACLK
LFACLK
LFACLK
LFACLK
LFACLK
LFACLK
LFACLK
LFACLK
LFACLK
LFACLK
LFACLK
LFACLK
LFACLK
LFACLK
LFACLK
Description
LFACLK
LFACLK
LFACLK
LFACLK
LFACLK
LFACLK
LFACLK
LFACLK
LFACLK
LFACLK
...the world's most energy friendly microcontrollers
114
Bit Position
Liquid Crystal Display Controller Prescaler
Low Energy Timer 0 Prescaler
Real-Time Counter Prescaler
Description
LCD
LCD
LCD
LCD
LETIMER0
LETIMER0
LETIMER0
LETIMER0
LETIMER0
LETIMER0
LETIMER0
LETIMER0
LETIMER0
LETIMER0
LETIMER0
LETIMER0
LETIMER0
LETIMER0
LETIMER0
LETIMER0
RTC
RTC
RTC
RTC
RTC
RTC
RTC
RTC
RTC
RTC
= LFACLK/16
= LFACLK/32
= LFACLK/64
= LFACLK/128
= LFACLK
= LFACLK/2
= LFACLK/4
= LFACLK/8
= LFACLK/16
= LFACLK/32
= LFACLK/64
= LFACLK/128
= LFACLK/256
= LFACLK/512
= LFACLK
= LFACLK/2
= LFACLK/4
= LFACLK/8
= LFACLK/16
= LFACLK/32
= LFACLK/64
= LFACLK/128
= LFACLK/256
= LFACLK/512
= LFACLK/1024
= LFACLK/2048
= LFACLK/4096
= LFACLK/8192
= LFACLK/16384
= LFACLK/32768
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