R4F24268NVRFQV Renesas Electronics America, R4F24268NVRFQV Datasheet - Page 901
R4F24268NVRFQV
Manufacturer Part Number
R4F24268NVRFQV
Description
MCU 256KB FLASH 48K 144-LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2400r
Datasheet
1.R4F24268NVZFQV.pdf
(1406 pages)
Specifications of R4F24268NVRFQV
Core Processor
H8S/2600
Core Size
16/32-Bit
Speed
33MHz
Connectivity
EBI/EMI, I²C, IrDA, SCI, SSU, UART/USART
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
96
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
48K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 10x10b, 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
Eeprom Size
-
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H8S/2426, H8S/2426R, H8S/2424 Group
15.3.3
TDR is an 8-bit register that stores transmit data. When the SCI detects that TSR is empty, it
transfers the transmit data written in TDR to TSR and starts transmission. The double-buffered
structures of TDR and TSR enable continuous serial transmission. If the next transmit data has
already been written to TDR during serial transmission, the SCI transfers the written data to TSR
to continue transmission. Although TDR can be read or written to by the CPU at all times, to
achieve reliable serial transmission, write transmit data to TDR for only once after confirming that
the TDRE bit in SSR is set to 1.
15.3.4
TSR is a shift register that transmits serial data. To perform serial data transmission, the SCI first
transfers transmit data from TDR to TSR, then sends the data to the TxD pin starting. TSR cannot
be directly accessed by the CPU.
15.3.5
SMR is used to set the SCI's serial transfer format and select the on-chip baud rate generator clock
source. Some bit functions of SMR differ in normal serial communication interface mode and
Smart Card interface mode.
Normal Serial Communication Interface Mode (When SMIF bit in SCMR is 0)
REJ09B0466-0350 Rev. 3.50
Jul 09, 2010
Bit
7
6
Bit Name
C/A
CHR
Transmit Data Register (TDR)
Transmit Shift Register (TSR)
Serial Mode Register (SMR)
Initial Value
0
0
R/W
R/W
R/W
Description
Communication Mode
0: Asynchronous mode
1: Clocked synchronous mode
Character Length (enabled only in asynchronous
mode)
0: Selects 8 bits as the data length.
1: Selects 7 bits as the data length. LSB-first is
In clocked synchronous mode, a fixed data length
of 8 bits is used.
fixed and the MSB (bit 7) of TDR is not
transmitted in transmission.
Section 15 Serial Communication Interface (SCI, IrDA)
Page 871 of 1372
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