UPD70F3451GC-UBT-A Renesas Electronics America, UPD70F3451GC-UBT-A Datasheet - Page 794

• Manufacturer Part Number: UPD70F3451GC-UBT-A
• Description: MCU 32BIT 128KB FLASH 80LQFP
• Manufacturer: Renesas Electronics America
• Series: V850E/Ix3r

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: -

792
(5) Transfer rate during continuous transmission
During continuous transmission, the transfer rate from a stop bit to the next start bit is extended two clocks
longer than normal. However, on the reception side, the transfer result is not affected since the timing is
initialized by the detection of the start bit.
Representing the 1-bit data length by FL, the stop bit length by FLstp, and the base clock frequency by f
yields the following equation.
Therefore, the transfer rate during continuous transmission is as follows.
FLstp = FL + 2/(f
Transfer rate = 11 × FL + 2/(f
Start bit
FL
Figure 15-11. Transfer Rate During Continuous Transmission
CHAPTER 15 ASYNCHRONOUS SERIAL INTERFACE B (UARTB)
Bit 0
XX
FL
)
Bit 1
FL
XX
)
1 data frame
User’s Manual U18279EJ3V0UD
Bit 7
FL
Parity bit
FL
Stop bit
FLstp
Start bit
FL
Start bit of
second byte
Bit 0
FL
XX