NUC120RD1BN Nuvoton Technology Corporation of America, NUC120RD1BN Datasheet - Page 421

• Manufacturer Part Number: NUC120RD1BN
• Description: IC MCU 32BIT 64KB FLASH 64LQFP
• Manufacturer: Nuvoton Technology Corporation of America
• Series: NuMicro™r

Specifications of NUC120RD1BN

• Core Processor: ARM Cortex-M0
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: EBI/EMI, I²C, IrDA, SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, DMA, I²S, LVD, POR, PS2, PWM, WDT
• Number Of I /o: 45
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K 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: 64-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

5.13.4 Functional Description
5.13.4.1 Frame Formats
5.13.4.2 Frame Types
5.13.4.3 DATA FRAME
The bus has two complementary logical values, one is dominant bit represented by logic low level
another is recessive bit represented by logic high level.
There are two different formats which differ in the length of the IDENTIFIER field: Frames with the
number of 11 bits IDENTIFIER are denoted Standard Frames. In contrast, frames containing 29
bits IDENTIFIER are denoted Extended Frames.
Message transfer is manifested and controlled by four different frame types:
DATA FRAMES and REMOTE FRAMES can be used both in Standard Format and Extended
Format; they are separated from preceding frames by an INTERFRAME SPACE.
A DATA FRAME is composed of seven different bit fields: START of FRAME, ARBITRATION
FIELD, CONTROL FIELD, CRC FILED, ACK FIELD, and END OF FRAME. The DATA FIELD can
be of length zero.
1.
2.
3.
4.
A DATA FRAME carries data from a transmitter to the receivers
A REMOTE DATA FRAME is transmitted by a bus unit to request the transmission of the
DATA FRAME with the same IDENTIFIER
An ERROR FRAME is transmitted by any unit on detecting a bus error
An OVERLOAD FRAME is used to provide for an extra delay between the preceding and
the succeeding DATA or REMOTE FRAMES
NuMicro™ NUC100 Series Technical Reference Manual
- 421 -
Publication Release Date: Oct 22, 2010
Revision V1.06