NUC140LD2CN Nuvoton Technology Corporation of America, NUC140LD2CN Datasheet - Page 195

• Manufacturer Part Number: NUC140LD2CN
• Description: IC MCU 32BIT 64KB FLASH 48LQFP
• Manufacturer: Nuvoton Technology Corporation of America
• Series: NuMicro™ NUC100r

Specifications of NUC140LD2CN

• Core Processor: ARM Cortex-M0
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: CAN, I²C, IrDA, LIN, SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
• Number Of I /o: 31
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Eeprom Size: -
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.5 V ~ 5.5 V
• Data Converters: A/D 8x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-LQFP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

5.6
5.6.1
I
exchange between devices. The I
detection and arbitration that prevents data corruption if two or more masters attempt to control
the bus simultaneously.
Data is transferred between a Master and a Slave synchronously to SCL on the SDA line on a
byte-by-byte basis. Each data byte is 8-bit long. There is one SCL clock pulse for each data bit
with the MSB being transmitted first. An acknowledge bit follows each transferred byte. Each bit is
sampled during the high period of SCL; therefore, the SDA line may be changed only during the
low period of SCL and must be held stable during the high period of SCL. A transition on the SDA
line while SCL is high is interpreted as a command (START or STOP). Please refer to the Figure
5-18 for more detail I
The device’s on-chip I
specification. The I
in I2CON should be set to '1'. The I
Pull up resistor is needed for I
used as I
2
C is a two-wire, bi-directional serial bus that provides a simple and efficient method of data
I
2
Overview
C Serial Interface Controller (Master/Slave) (I
NuMicro™ NUC130/NUC140 Technical Reference Manual
2
C port, user must set the pins function to I
2
C port handles byte transfers autonomously. To enable this port, the bit ENS1
2
C BUS Timing.
2
C logic provides the serial interface that meets the I
2
C operation as these are open drain pins. When the I/O pins are
Figure 5-18 I
2
2
C H/W interfaces to the I
C standard is a true multi-master bus including collision
- 195 -
2
C Bus Timing
2
C in advance.
Publication Release Date: June 14, 2011
2
C)
2
C bus via two pins: SDA and SCL.
2
C bus standard mode
Revision V2.01