EFM32G200F16 Energy Micro, EFM32G200F16 Datasheet - Page 277
EFM32G200F16
Manufacturer Part Number
EFM32G200F16
Description
MCU 32BIT 16KB FLASH 32-QFN
Manufacturer
Energy Micro
Series
Geckor
Datasheets
1.EFM32G200F16.pdf
(63 pages)
2.EFM32G200F16.pdf
(10 pages)
3.EFM32G200F16.pdf
(463 pages)
4.EFM32G200F16.pdf
(136 pages)
Specifications of EFM32G200F16
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, POR, PWM, WDT
Number Of I /o
24
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.8 V
Data Converters
A/D 4x12b, D/A 1x12b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
32-VQFN Exposed Pad
Processor Series
EFM32G200
Core
ARM Cortex-M3
Data Bus Width
32 bit
Data Ram Size
8 KB
Interface Type
I2C, UART
Maximum Clock Frequency
32 MHz
Number Of Programmable I/os
24
Number Of Timers
2
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
- EFM32G200F16 PDF datasheet
- EFM32G200F16 PDF datasheet #2
- EFM32G200F16 PDF datasheet #3
- EFM32G200F16 PDF datasheet #4
- Current page: 277 of 463
- Download datasheet (8Mb)
20.3.1 Counter
20.3.1.1 Clock Source
2010-09-06 - d0001_Rev1.00
Figure 20.1. RTC Overview
The RTC is enabled by setting the EN bit in the RTC_CTRL register. It counts up as long as it is
enabled, and will on an overflow simply wrap around and continue counting. The RTC is cleared when it
is disabled. The timer value is read-only and the RTC always starts counting from 0 when enabled. The
value of the counter can be read using the RTC_CNT register.
The RTC clock source and its prescaler value are defined in the Register Description section of the Clock
Management Unit (CMU). The clock used by the RTC has a frequency given by Equation 20.1 (p. 277) .
RTC Frequency Equation
where f
278) shows the time of overflow and resolution of the RTC at the available prescaler values.
To use this module, the LE interface clock must be enabled in CMU_HFCORECLKEN0 in addition to
the module clock
LFACLK
LFACLK
RTC
Clear
Counter (CNT)
is the LFACLK frequency (32.768 kHz) and RTC_PRESC is a 4 bit value. Table 20.1 (p.
Com pare 0
(COMP0)
f
RTC
=
= f
Peripheral bus
LFACLK
/2
...the world's most energy friendly microcontrollers
277
RTC_PRESC
Com pare 1
(COMP1)
=
RTC Control and
Status
Com pare m atch 0
Com pare m atch 1
www.energymicro.com
(20.1)
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