R5F21324CNSP#U0 Renesas Electronics America, R5F21324CNSP#U0 Datasheet - Page 340

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

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 311 of 573
Figure 21.7
• Receive Timing Example When Transfer Data is 8 Bits Long (Parity Disabled, One Stop Bit)
S0RIC register
U0BRG output
Transfer clock
U0C1 register
U0C1 register
RE bit in
RI bit in
IR bit in
RXD0
The above applies when :
Receive Timing in UART Mode
• PRYE bit in U0MR register = 0 (parity disabled)
• STPS bit in U0MR register = 0 (one stop bit)
Reception starts when a transfer clock is
generated at the falling edge of the start bit.
Start bit
“L” is determined.
D0
Set to 0 when an interrupt request is acknowledged or by a program.
Receive data taken in
D1
Data transfer from UART0 receive register to U0RB register
D7
Stop bit
21. Serial Interface (UART0)