UPD70F3451GC-UBT-A Renesas Electronics America, UPD70F3451GC-UBT-A Datasheet - Page 778
UPD70F3451GC-UBT-A
Manufacturer Part Number
UPD70F3451GC-UBT-A
Description
MCU 32BIT 128KB FLASH 80LQFP
Manufacturer
Renesas Electronics America
Series
V850E/Ix3r
Datasheet
1.UPD70F3451GC-UBT-A.pdf
(1191 pages)
Specifications of UPD70F3451GC-UBT-A
Core Processor
RISC
Core Size
32-Bit
Speed
64MHz
Connectivity
CSI, I²C, UART/USART
Peripherals
DMA, LVD, PWM, WDT
Number Of I /o
44
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
3.5 V ~ 5.5 V
Data Converters
A/D 10x12b, 4x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
UPD70F3451GC-UBT-A
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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15.7.2 Transmit operation
transmission is started when transmit data is written to the UBTX register.
as the trigger by the UBFIC2.UBTT3 to UBFIC2.UBTT0 bits and 16 bytes or less is written to transmit FIFO and then
the UBTXE bit is set to 1.
776
In the single mode (UBFIC0.UBMOD bit = 0), transmission is enabled when the UBCTL0.UBTXE bit is set to 1, and
In the FIFO mode (UBFIC0.UBMOD bit = 1), transmission is started when transmit data of at least the number set
Caution Setting the UBCTL0.UBTXE bit to 1 before writing transmit data to transmit FIFO in the FIFO
(1) Transmission enabled state
(2) Starting a transmit operation
This state is set by the UBCTL0.UBTXE bit.
• UBTXE = 1: Transmission enabled state
• UBTXE = 0: Transmission disabled state
However, because this bit is also used by CSIB2, enable transmission after setting the CB2CTL0.CB2PWR
bit to 0.
Since UARTB does not have a CTS (transmission enabled signal) input pin, a port should be used to confirm
whether the destination is in the reception enabled state.
• In single mode (UBFIC0.UBMOD bit = 0)
• In FIFO mode (UBFIC0.UBMOD bit = 1)
Data in the transmit data register (UBTX register in single mode or transmit FIFO in the FIFO mode) is
transferred to the transmit shift register when transmission is started. Then, the transmit shift register outputs
data to the TXDB pin sequentially beginning with the LSB (the transmit data is transferred sequentially
starting with the start bit). The start bit, parity bit, and stop bits are added automatically.
In the single mode, transmission is started when transmit data is written to the UBTX register while
transmission is enabled.
In the FIFO mode, transmission is started when transmit data of at least the number set as the trigger by
the UBFIC2.UBTT3 to UBFIC2.UBTT0 bits and 16 bytes or less is written to transmit FIFO and then
transmission is enabled (UBTXE bit = 1).
mode is prohibited. The operation is not guaranteed if this setting is made.
CHAPTER 15 ASYNCHRONOUS SERIAL INTERFACE B (UARTB)
User’s Manual U18279EJ3V0UD
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