EFM32G200F64 Energy Micro, EFM32G200F64 Datasheet - Page 159

• Manufacturer Part Number: EFM32G200F64
• Description: MCU 32BIT 64KB FLASH 32-QFN
• Manufacturer: Energy Micro
• Series: Geckor

Specifications of EFM32G200F64

• 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: 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 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: 16 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

15.3.10 Transfer Automation
15.3.10.1 DMA
15.3.10.2 Automatic ACK
15.3.10.3 Automatic STOP
2010-09-06 - d0001_Rev1.00
See Table 15.9 (p. 159) for more information.
Table 15.9. I
The I
DMA can be used to automatically load data into the transmit buffer and load data out from the receive
buffer. When using DMA, software is thus relieved of moving data to and from memory after each
transferred byte.
When AUTOACK in I2Cn_CTRL is set, an ACK is sent automatically whenever an ACK interaction is
possible and no higher priority interactions are pending.
A STOP can be generated automatically on two conditions. These apply only to the master transmitter.
If AUTOSN in I2Cn_CTRL is set, the I
when operating as a master transmitter and a NACK is received.
If AUTOSE in I2Cn_CTRL is set, the I
data in the transmit buffer. If data has been transmitted on the bus, the transmission is ended after the
(N)ACK has been received by the slave. If a START is sent when no data is available in the transmit
buffer and AUTOSE is set, then the STOP condition is sent immediately following the START. Software
must thus make sure data is available in the transmit buffer before the START condition has been fully
transmitted if data is to be transferred.
I2Cn_STATE Description
-
0x71
0xB1
-
-
2
C can be set up to complete transfers with a minimal amount of interaction.
Repeated START
received
ADDR + W received
Data received
Stop received
Arbitration lost
2
C - Slave Receiver
I2Cn_IF
RSTART interrupt flag
(BUSHOLD interrupt
flag)
ADDR interrupt flag
RXDATA interrupt flag
(BUSHOLD interrupt
flag)
RXDATA interrupt flag
(BUSHOLD interrupt
flag)
SSTOP interrupt flag
ARBLOST interrupt
flag
2
C module ends a transmission by transmitting a STOP condition
2
C module always ends a transmission when there is no more
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Required
interaction
RXDATA
ACK +
RXDATA
NACK
NACK +
CONT +
RXDATA
ACK +
RXDATA
NACK
NACK +
CONT +
RXDATA
None
START
None
START
Response
Receive and compare address
ACK will be sent and data will be received
NACK will be sent, slave goes idle
NACK will be sent and DATA will be received.
ACK will be sent and data will be received
NACK will be sent and slave will go idle
NACK will be sent and data will be received
The slave goes idle
START will be sent when bus becomes idle
The slave goes idle
START will be sent when the bus becomes idle
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