UPD70F3451GC-UBT-A Renesas Electronics America, UPD70F3451GC-UBT-A Datasheet - Page 769

• 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: -

(10) UARTB FIFO status register 1 (UBFIS1)
The UBFIS1 register is valid in the FIFO mode (UBFIC0.UBMOD bit = 1). This register can be used to read
the number of empty bytes of transmit FIFO.
This register is read-only in 8-bit units.
Reset sets this register to 10H.
Caution The values of the UBTB4 to UBTB0 bits are reflected after transmit data has been written to
UBFIS1
After reset: 10H
the UBTX register and then time of two cycles of f
exercised when referencing the UBFIS1 register after transmit data has been written to the
UBTX register.
CHAPTER 15 ASYNCHRONOUS SERIAL INTERFACE B (UARTB)
Indicates the number of empty bytes of transmit FIFO (bytes that can be written)
as a transmit FIFO pointer.
UBTB4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
7
0
R
UBTB3
6
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
Setting prohibited
Address: FFFFFA4FH
User’s Manual U18279EJ3V0UD
UBTB2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
5
0
UBTB4
UBTB1
4
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
UBTB0
UBTB3
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
3
XX
UBTB2
0 bytes
1 byte
2 bytes
3 bytes
4 bytes
5 bytes
6 bytes
7 bytes
8 bytes
9 bytes
10 bytes
11 bytes
12 bytes
13 bytes
14 bytes
15 bytes
16 bytes
Invalid
has passed. Therefore, care must be
2
Transmit FIFO pointer
UBTB1
1
UBTB0
0
767