UPD78F9234MC-5A4-A Renesas Electronics America, UPD78F9234MC-5A4-A Datasheet - Page 201
UPD78F9234MC-5A4-A
Manufacturer Part Number
UPD78F9234MC-5A4-A
Description
MCU 8BIT 8KB FLASH 30PIN
Manufacturer
Renesas Electronics America
Series
78K0S/Kx1+r
Datasheet
1.UPD78F9232MC-5A4-A.pdf
(419 pages)
Specifications of UPD78F9234MC-5A4-A
Core Processor
78K0S
Core Size
8-Bit
Speed
10MHz
Connectivity
LIN, UART/USART
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
24
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
256 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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11.4.2 Asynchronous serial interface (UART) mode
performed.
baud rates.
(1) Registers used
In this mode, data of 1 byte is transmitted/received following a start bit, and a full-duplex operation can be
A dedicated UART baud rate generator is incorporated, so that communication can be executed at a wide range of
The basic procedure of setting an operation in the UART mode is as follows.
<1> Set the CKSR6 register (see Figure 11-8).
<2> Set the BRGC6 register (see Figure 11-9).
<3> Set bits 0 to 4 (ISRM6, SL6, CL6, PS60, PS61) of the ASIM6 register (see Figure 11-5).
<4> Set bits 0 and 1 (TXDLV6, DIR6) of the ASICL6 register (see Figure 11-10).
<5> Set bit 7 (POWER6) of the ASIM6 register to 1.
<6> Set bit 6 (TXE6) of the ASIM6 register to 1.
<7> Write data to transmit buffer register 6 (TXB6).
Caution Take the relationship with the other party of communication into consideration when setting the
Asynchronous serial interface reception error status register 6 (ASIS6)
Asynchronous serial interface operation mode register 6 (ASIM6)
Asynchronous serial interface transmission status register 6 (ASIF6)
Clock selection register 6 (CKSR6)
Baud rate generator control register 6 (BRGC6)
Asynchronous serial interface control register 6 (ASICL6)
Input switch control register (ISC)
Port mode register 4 (PM4)
Port register 4 (P4)
Set bit 5 (RXE6) of the ASIM6 register to 1.
port mode register and port register. In order to avoid the generation of unintended start bits
(falling signals), set PM43 to 0 (output) after having set P43 to 1.
CHAPTER 11 SERIAL INTERFACE UART6
User’s Manual U17446EJ5V0UD
Transmission is enabled.
Reception is enabled.
Data transmission is started.
199
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