EFM32G200F16 Energy Micro, EFM32G200F16 Datasheet - Page 307
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
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- Download datasheet (8Mb)
22 PCNT - Pulse Counter
22.1 Introduction
22.2 Features
22.3 Functional Description
2010-09-06 - d0001_Rev1.00
The Pulse Counter (PCNT) can be used for counting pulses on a single input or to decode quadrature
encoded inputs. It runs off either the internal LFACLK or the PCNTn_S0IN pin as external clock source.
The module may operate in energy mode EM0 – EM3.
• 8-bit counter with double-buffered reload register
• Single input oversampling up/down counter mode (EM0-EM2)
• Externally clocked single input pulse up/down counter mode (EM0-EM3)
• Externally clocked quadrature decoder mode (EM0-EM3)
• Interrupt on counter underflow and overflow
• Interrupt when a direction change is detected (quadrature decoder mode only)
• Optional pulse width filter
• Optional input inversion/edge detect select
An overview of the PCNT module is shown in Figure 22.1 (p. 308) .
0 1 2 3
4
Quadrature code
Reload value
Interrupt
0
...the world's most energy friendly microcontrollers
307
What?
The Pulse Counter (PCNT) decodes
incoming pulses. The module has a
quadrature mode which may be used
to decode the speed and direction of a
mechanical shaft. PCNT can operate in EM0-
EM3.
Why?
The PCNT generates an interrupt after a
specific number of pulses (or rotations),
eliminating the need for timing- or I/O
interrupts and CPU processing to measure
pulse widths, etc.
How?
PCNT uses the LFACLK or may be externally
clocked from a pin. The module incorporates
an 8-bit up/down-counter to keep track of
incoming pulses or rotations.
Quick Facts
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