UPD78F9221CS-CAC-A Renesas Electronics America, UPD78F9221CS-CAC-A Datasheet - Page 184
UPD78F9221CS-CAC-A
Manufacturer Part Number
UPD78F9221CS-CAC-A
Description
MCU 8BIT 2KB FLASH 20PIN
Manufacturer
Renesas Electronics America
Series
78K0S/Kx1+r
Datasheet
1.UPD78F9221MC-5A4-A.pdf
(418 pages)
Specifications of UPD78F9221CS-CAC-A
Core Processor
78K0S
Core Size
8-Bit
Speed
10MHz
Connectivity
LIN, UART/USART
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
15
Program Memory Size
2KB (2K x 8)
Program Memory Type
FLASH
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
2 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
-
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11.1 Functions of Serial Interface UART6
(1) Operation stop mode
(2) Asynchronous serial interface (UART) mode
182
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, see 11.4.1 Operation stop mode.
This mode supports the LIN (Local Interconnect Network)-bus. The functions of this mode are outlined below.
For details, see 11.4.2
generator.
Cautions 1. The T
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.
MSB- or LSB-first communication selectable
Inverted transmission operation
Synchronous break field transmission from 13 to 20 bits
More than 11 bits can be identified for synchronous 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. 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.
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
incorporated in LIN.
X
D6 output inversion function inverts only the transmission side and not the reception
Asynchronous serial interface (UART) mode and 11.4.3
T
R
CHAPTER 11 SERIAL INTERFACE UART6
X
X
D6: Transmit data output pin
D6: Receive data input pin
X
D6 pin also holds the value immediately before clock supply was
User’s Manual U16898EJ6V0UD
Dedicated baud rate
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