R5F21217JFP#U1 Renesas Electronics America, R5F21217JFP#U1 Datasheet - Page 299

• Manufacturer Part Number: R5F21217JFP#U1
• Description: MCU FLASH 48K 2.5K CMOS 48LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/21r

Specifications of R5F21217JFP#U1

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, Voltage Detect, WDT
• Number Of I /o: 41
• Program Memory Size: 48KB (48K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.5K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/20 Group, R8C/21 Group
Rev.2.00 Aug 27, 2008
REJ09B0250-0200
15.3
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Example (when reading receive buffer register):
Example (when reading transmit buffer register):
When reading data from the UiRB (i = 0 or 1) register even in the clock asynchronous serial I/O mode or in the
clock synchronous serial I/O mode. Ensure to read data in 16-bit unit. When the high-order byte of the UiRB
register is read, the PER and FER bits in the UiRB register and the RI bit in the UiC1 register are set to 0.
To check receive errors, read the UiRB register and then use the read data.
When writing data to the UiTB register in the clock asynchronous serial I/O mode with 9-bit transfer data
length, write data high-order byte first, then low-order byte in 8-bit units.
Notes on Serial Interface
MOV.W
MOV.B
MOV.B
00A6H,R0
#XXH,00A3H ; Write the high-order byte of U0TB register
#XXH,00A2H ; Write the low-order byte of U0TB register
Page 281 of 458
; Read the U0RB register
15. Serial Interface