R5F2L3AAANFP#U1 Renesas Electronics America, R5F2L3AAANFP#U1 Datasheet - Page 536

• Manufacturer Part Number: R5F2L3AAANFP#U1
• Description: MCU FLASH 96+4KB 100LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/Lx/3AAr

Specifications of R5F2L3AAANFP#U1

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: LCD, POR, PWM, Voltage Detect, WDT
• Number Of I /o: 88
• Program Memory Size: 96KB (96K x 8)
• Program Memory Type: FLASH
• Ram Size: 10K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 20x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/L35A Group, R8C/L36A Group, R8C/L38A Group, R8C/L3AA Group,
R8C/L35B Group, R8C/L36B Group, R8C/L38B Group, R8C/L3AB Group
REJ09B0441-0100 Rev.1.00
Page 499 of 802
24. Serial Interface (UART2)
The serial interface consists of three channels, UART0 to UART2. This chapter describes UART2.
24.1
Figure 24.1
CTS2/RTS2
UART2 has a dedicated timer to generate a transfer clock and operate.
Figure 24.1 shows a Block Diagram of UART2. Figure 24.2 shows a Block Diagram of UART2 Transmit/Receive
Unit. Table 24.1 lists the UART 2 Pin Configuration.
UART2 supports the following modes:
• Clock synchronous serial I/O mode
• Clock asynchronous serial I/O mode (UART mode)
• Special mode 1 (I
• Multiprocessor communication function
RXD2
SMD0 to SMD2, CKDIR: Bits in U2MR register
CLK0, CLK1, CKPOL, CRD, CRS: Bits in U2C0 register
DF2EN: Bit in URXDF register
CLK2
f32
Clock source selection
fC
f1
f8
Introduction
= 00b
= 01b
= 10b
= 11b
CLK1 to CLK0
CKPOL
Block Diagram of UART2
polarity
CTS/RTS selected
switch
circuit
CLK
CKDIR
= 1
CKDIR
= 0
2
CRS = 0
C mode)
Digital filter
CRS = 1
CKDIR
internal
CKDIR
external
Clock synchronous type
(internal clock selected)
switching circuit
CTS/RTS disabled
RXD polarity
Oct 30, 2009
1/(n+1)
U2BRG
register
CRD = 0
CRD = 1
VSS
DF2EN = 1
DF2EN = 0
CTS/RTS disabled
1/16
1/16
1/2
Clock synchronous type
(external clock selected)
Clock synchronous type
(internal clock selected)
Clock synchronous type
Clock synchronous type
= 010b, 100b, 101b, 110b
= 010b, 100b, 101b, 110b
UART reception
UART transmission
n: Value set in U2BRG register
CKDIR = 0
CKDIR = 1
= 001b
= 001b
RTS2
CTS2
SMD2 to SMD0
control circuit
Transmission
control circuit
Reception
Receive
clock
Transmit
clock
24. Serial Interface (UART2)
Transmit/
receive
unit
polarity
switch
circuit
TXD
TXD2