UPD70F3451GC-UBT-A Renesas Electronics America, UPD70F3451GC-UBT-A Datasheet - Page 787

• 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: -

15.7.7 Receive data noise filter
twice, the match detector output changes, and this output is sampled as input data. Therefore, data not exceeding
one clock width is judged to be noise and is not delivered to the internal circuit (see Figure 15-8).
delayed by up to 2 clocks according to the external signal status.
The RXDB signal is sampled at the rising edge of the input clock (f
Also, since the circuit is configured as shown in Figure 15-7, internal processing during a receive operation is
Remark
Remark
Internal signal A
Internal signal B
RXDB (input)
RXDB
f
XX
f
f
XX
XX
: Peripheral clock
: Peripheral clock
f
XX
CHAPTER 15 ASYNCHRONOUS SERIAL INTERFACE B (UARTB)
In
Figure 15-8. Timing of RXDB Signal Judged as Noise
Q
Figure 15-7. Noise Filter Circuit
User’s Manual U18279EJ3V0UD
Match
Internal signal A
Match detector
(judged as noise)
Mismatch
XX
). If the same sampling value is obtained
In
LD_EN
Match
Q
Internal signal B
(judged as noise)
Mismatch
785