UPD78F0550MA-FAA-AX Renesas Electronics America, UPD78F0550MA-FAA-AX Datasheet - Page 408

• Manufacturer Part Number: UPD78F0550MA-FAA-AX
• Description: MCU 8BIT 16-SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2-Lr

Specifications of UPD78F0550MA-FAA-AX

• Package / Case: *
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Speed: 10MHz
• Number Of I /o: 12
• Core Processor: 78K/0
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Program Memory Size: 4KB (4K x 8)
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Peripherals: LVD, POR, PWM, WDT
• Connectivity: I²C, LIN, UART/USART
• Core Size: 8-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

14.1 Functions of Serial Interface UART6
(1) Operation stop mode
(2) Asynchronous serial interface (UART) mode
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Serial interface UART6 are mounted onto all 78K0/Kx2-L microcontroller products.
Serial interface UART6 has the following two modes.
This mode is used when serial communication is not executed and can enable a reduction in the power
consumption.
For details, refer to 14.4.1 Operation stop mode.
This mode supports the LIN (Local Interconnect Network)-bus. The functions of this mode are outlined below.
For details, refer to 14.4.2 Asynchronous serial interface (UART) mode and 14.4.3 Dedicated baud rate
generator.
Cautions 1. The T
Maximum transfer rate: 625 kbps
Two-pin configuration
Data length of communication data can be selected from 7 or 8 bits.
Dedicated internal 8-bit baud rate generator allowing any baud rate to be set
Transmission and reception can be performed independently (full duplex operation).
MSB- or LSB-first communication selectable
Inverted transmission operation
Sync break field transmission from 13 to 20 bits
More than 11 bits can be identified for sync break field reception (SBF reception flag provided).
2. If clock supply to serial interface UART6 is not stopped (e.g., in the HALT mode), normal
3. Set POWER6 = 1 and then set TXE6 = 1 (transmission) or RXE6 = 1 (reception) to start
4. TXE6 and RXE6 are synchronized by the base clock (f
5. Set transmit data to TXB6 at least one base clock (f
6. If data is continuously transmitted, the communication timing from the stop bit to the next
side. To use this function, the reception side must be ready for reception of inverted data.
operation continues. If clock supply to serial interface UART6 is stopped (e.g., in the STOP
mode), each register stops operating, and holds the value immediately before clock supply
was stopped. The T
stopped and outputs it. However, the operation is not guaranteed after clock supply is
resumed. Therefore, reset the circuit so that POWER6 = 0, RXE6 = 0, and TXE6 = 0.
communication.
transmission or reception again, set TXE6 or RXE6 to 1 at least two clocks of the base clock
after TXE6 or RXE6 has been cleared to 0. If TXE6 or RXE6 is set within two clocks of the
base clock, the transmission circuit or reception circuit may not be initialized.
start bit is extended two operating clocks of the macro. However, this does not affect the
result of communication because the reception side initializes the timing when it has
detected a start bit. Do not use the continuous transmission function if the interface is
used in LIN communication operation.
X
D6 output inversion function inverts only the transmission side and not the reception
T
R
CHAPTER 14 SERIAL INTERFACE UART6
X
X
D6: Transmit data output pin
D6: Receive data input pin
Preliminary User’s Manual U19111EJ2V1UD
X
D6 pin also holds the value immediately before clock supply was
XCLK6
) after setting TXE6 = 1.
XCLK6
) set by CKSR6. To enable