R5F21324CNSP#U0 Renesas Electronics America, R5F21324CNSP#U0 Datasheet - Page 361

MCU 1KB FLASH 16K ROM 20-LSSOP

R5F21324CNSP#U0

Manufacturer Part Number
R5F21324CNSP#U0
Description
MCU 1KB FLASH 16K ROM 20-LSSOP
Manufacturer
Renesas Electronics America
Series
R8C/3x/32Cr
Datasheet

Specifications of R5F21324CNSP#U0

Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
I²C, LIN, SIO, SSU, UART/USART
Peripherals
POR, PWM, Voltage Detect, WDT
Number Of I /o
15
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
20-LSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
R8C/32C Group
REJ09B0573-0100 Rev.1.00 Dec. 18, 2009
Page 332 of 573
Figure 22.6
22.3.5
22.3.6
If the U2LCH bit in the U2C1 register is set to 1 (inverted), the data written to the U2TB register has its logic
inverted before being transmitted. Similarly, the received data has its logic inverted when read from the U2RB
register. Figure 22.6 shows the Serial Data Logic Switching.
The CTS function is used to start transmit and receive operation when “L” is applied to the CTS2/RTS2 pin.
Transmit and receive operation begins when the CTS2/RTS2 pin is held low. If the “L” signal is switched to
“H” during a transmit or receive operation, the operation stops before the next data.
For the RTS function, the CTS2/RTS2 pin outputs “L” when the MCU is ready for a receive operation. The
output level goes high at the first falling edge of the CLK2 pin.
• The CRD bit in the U2C0 register = 1 (CTS/RTS function disabled)
• The CRD bit = 0, CRS bit = 0 (CTS function selected)
• The CRD bit = 0, CRS bit = 1 (RTS function selected)
The CTS2/RTS2 pin operates as the programmable I/O function.
The CTS2/RTS2 pin operates as the CTS function.
The CTS2/RTS2 pin operates as the RTS function.
Serial Data Logic Switching Function
CTS/RTS Function
(1) U2LCH Bit in U2C1 Register = 0 (not inverted)
(2) U2LCH Bit in U2C1 Register = 1 (inverted)
The above applies when:
Serial Data Logic Switching
• CKPOL bit in U2C0 register = 0 (transmit data output at the falling edge of the transfer clock)
• UFORM bit in U2C0 register = 0 (LSB first)
Transfer Clock
Transfer Clock
(not inverted)
(inverted)
TXD2
TXD2
D0
D0
D1
D1
D2
D2
D3
D3
D4
D4
D5
D5
D6
D6
D7
D7
22. Serial Interface (UART2)

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