UPD78F0551MA-FAA-AX Renesas Electronics America, UPD78F0551MA-FAA-AX Datasheet - Page 472
UPD78F0551MA-FAA-AX
Manufacturer Part Number
UPD78F0551MA-FAA-AX
Description
MCU 8BIT 16-SSOP
Manufacturer
Renesas Electronics America
Series
78K0/Kx2-Lr
Datasheet
1.UPD78F0551MA-FAA-AX.pdf
(822 pages)
Specifications of UPD78F0551MA-FAA-AX
Core Processor
78K/0
Core Size
8-Bit
Speed
10MHz
Connectivity
I²C, LIN, UART/USART
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
9
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
-
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78K0/Kx2-L
(3) Asynchronous serial interface transmission status register 6 (ASIF6)
(4) Clock selection register 6 (CKSR6)
R01UH0028EJ0400 Rev.4.00
Sep 27, 2010
Address: FF55H After reset: 00H R
Cautions 1. To transmit data continuously, write the first transmit data (first byte) to the TXB6 register. Be
Remark CKSR6 can be refreshed (the same value is written) by software during a communication operation (when
Symbol
ASIF6
This register indicates the status of transmission by serial interface UART6. It includes two status flag bits (TXBF6
and TXSF6).
Transmission can be continued without disruption even during an interrupt period, by writing the next data to the
TXB6 register after data has been transferred from the TXB6 register to the TXS6 register.
This register is read-only by an 8-bit memory manipulation instruction.
Reset signal generation, or clearing bit 7 (POWER6) or bit 6 (TXE6) of ASIM6 to 0 clears this register to 00H.
This register selects the base clock of serial interface UART6.
CKSR6 can be set by an 8-bit memory manipulation instruction.
Reset signal generation sets this register to 00H.
Figure 14-7. Format of Asynchronous Serial Interface Transmission Status Register 6 (ASIF6)
bits 7 and 6 (POWER6, TXE6) of ASIM6 = 1 or bits 7 and 5 (POWER6, RXE6) of ASIM6 = 1).
2. To initialize the transmission unit upon completion of continuous transmission, be sure to check
TXBF6
TXSF6
sure to check that the TXBF6 flag is “0”. If so, write the next transmit data (second byte) to the
TXB6 register. If data is written to the TXB6 register while the TXBF6 flag is “1”, the transmit data
cannot be guaranteed.
that the TXSF6 flag is “0” after generation of the transmission completion interrupt, and then
execute initialization. If initialization is executed while the TXSF6 flag is “1”, the transmit data
cannot be guaranteed.
7
0
1
0
1
0
If POWER6 = 0 or TXE6 = 0, or if data is transferred to transmit shift register 6 (TXS6)
If data is written to transmit buffer register 6 (TXB6) (if data exists in TXB6)
If POWER6 = 0 or TXE6 = 0, or if the next data is not transferred from transmit buffer register 6
(TXB6) after completion of transfer
If data is transferred from transmit buffer register 6 (TXB6) (if data transmission is in progress)
6
0
5
0
Transmit shift register data flag
4
0
Transmit buffer data flag
CHAPTER 14 SERIAL INTERFACE UART6
3
0
2
0
TXBF6
1
TXSF6
0
458
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