UPD78F0500AMC-CAB-AX Renesas Electronics America, UPD78F0500AMC-CAB-AX Datasheet - Page 432

• Manufacturer Part Number: UPD78F0500AMC-CAB-AX
• Description: MCU 8BIT 30SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2r

Specifications of UPD78F0500AMC-CAB-AX

• Core Processor: 78K/0
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 23
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

78K0/Kx2
14.1 Functions of Serial Interface UART0
(2) Asynchronous serial interface (UART) mode
R01UH0008EJ0401 Rev.4.01
Jul 15, 2010
(1) Operation stop mode
Serial interface UART0 are mounted onto all 78K0/Kx2 microcontroller products.
Serial interface UART0 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, see 14.4.1 Operation stop mode.
The functions of this mode are outlined below.
For details, see 14.4.2 Asynchronous serial interface (UART) mode and 14.4.3 Dedicated baud rate generator.
• Maximum transfer rate: 625 kbps
• Two-pin configuration
• Length of communication data can be selected from 7 or 8 bits.
• Dedicated on-chip 5-bit baud rate generator allowing any baud rate to be set
• Transmission and reception can be performed independently (full-duplex operation).
• Fixed to LSB-first communication
Cautions 1. If clock supply to serial interface UART0 is not stopped (e.g., in the HALT mode), normal
2. Set POWER0 = 1 and then set TXE0 = 1 (transmission) or RXE0 = 1 (reception) to start
3. TXE0 and RXE0 are synchronized by the base clock (f
4. Set transmit data to TXS0 at least one base clock (f
operation continues. If clock supply to serial interface UART0 is stopped (e.g., in the STOP
mode), each register stops operating, and holds the value immediately before clock supply was
stopped. The T
outputs it. However, the operation is not guaranteed after clock supply is resumed. Therefore,
reset the circuit so that POWER0 = 0, RXE0 = 0, and TXE0 = 0.
communication.
transmission or reception again, set TXE0 or RXE0 to 1 at least two clocks of base clock after
TXE0 or RXE0 has been cleared to 0. If TXE0 or RXE0 is set within two clocks of base clock, the
transmission circuit or reception circuit may not be initialized.
T
R
X
X
D0: Transmit data output pin
D0: Receive data input pin
CHAPTER 14 SERIAL INTERFACE UART0
X
D0 pin also holds the value immediately before clock supply was stopped and
CHAPTER 14 SERIAL INTERFACE UART0
XCLK0
) after setting TXE0 = 1.
XCLK0
) set by BRGC0.
To enable
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