R4F24278NVFQU Renesas Electronics America, R4F24278NVFQU Datasheet - Page 1119

• Manufacturer Part Number: R4F24278NVFQU
• Description: MCU 512K/48K 2.7-5.5V 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2400r

Specifications of R4F24278NVFQU

• Core Processor: H8S/2600
• Core Size: 16/32-Bit
• Speed: 33MHz
• Connectivity: EBI/EMI, I²C, IrDA, SCI, Smart Card, SPI, SSU, UART/USART
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 98
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Eeprom Size: -
• Ram Size: 64K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 144-LQFP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

H8S/2427, H8S/2427R, H8S/2425 Group
20.3.7
SSTDR is an 8-bit register that stores transmit data. When 8-bit data length is selected by bits
DATS1 and DATS0 in SSCRL, SSTDR0 is valid. When 16-bit data length is selected, SSTDR0
and SSTDR1 are valid. When 24-bit data length is selected, SSTDR0, SSTDR1, and SSTDR2 are
valid. When 32-bit data length is selected, SSTDR0 to SSTDR3 are valid. Be sure not to access to
invalid SSTDRs.
When the SSU detects that SSTRSR is empty, it transfers the transmit data written in SSTDR to
SSTRSR and starts serial transmission. If the next transmit data has already been written to
SSTDR during serial transmission, the SSU performs consecutive serial transmission.
Although SSTDR can always be read from or written to, to achieve reliable serial transmission,
write transmit data to SSTDR after confirming that the TDRE bit in SSSR is set to 1.
Table 20.2 Correspondence Between DATS Bit Setting and SSTDR
REJ09B0565-0100 Rev. 1.00
Jul 22, 2010
SSTDR
0
1
2
3
SS Transmit Data Registers 0 to 3 (SSTDR0 to SSTDR3)
00
Valid
Invalid
Invalid
Invalid
01
Valid
Valid
Invalid
Invalid
DATS[1:0] (SSCRL[1:0])
Section 20 Synchronous Serial Communication Unit (SSU)
10
Valid
Valid
Valid
Valid
11 (Setting Invalid)
Valid
Valid
Valid
Invalid
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