R5F21217JFP#U1 Renesas Electronics America, R5F21217JFP#U1 Datasheet - Page 321

• 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
Figure 16.17
(1)
(2)
(3)
(4)
(5)
(6)
NOTE:
1. Write 0 after reading 1 to set the TEND bit to 0.
SSSR register
SSER register
Write transmit data to SSTDR register
Communication Mode)
Sample Flowchart of Data Transmission/Reception (Clock Synchronous
Read receive data in SSRDR register
Read TDRE bit in SSSR register
Read RDRF bit in SSSR register
Read TEND bit in SSSR register
No
Page 303 of 458
Data transmit
Initialization
continued?
TDRE=1 ?
RDRF=1 ?
TEND=1 ?
Start
End
TEND bit ← 0
RE bit ← 0
TE bit ← 0
Yes
Yes
No
Yes
No
No
(1)
Yes
(2) Confirm that the RDRF bit is set to 1. If the RDRF
(3) Determine whether the transmit data is continued.
(4) When the data transmit is completed, the TEND
(5) Set the TEND bit to 0 and
(6) the RE and TE bits in the SSER register to 0 before
(1) After reading the SSSR register and confirming
bit is set to 1, read the receive data in the SSRDR
register. When reading the SSRDR register, the
RDRF bit is automatically set to 0.
bit in the SSSR register is set to 1.
ending transmit/receive mode.
that the TDRE bit is set to 1, write the transmit
data in the SSTDR register. When writing the
transmit data to the SSTDR register, the TDRE bit
is automatically set to 0.
16. Clock Synchronous Serial Interface