R5F21324CNSP#U0 Renesas Electronics America, R5F21324CNSP#U0 Datasheet - Page 323

• 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 294 of 573
Figure 21.2
RXD0
Table 21.1
TXD0
RXD0
CLK0
Pin Name
SP
SP
Block Diagram of UART0 Transmit/Receive Unit
Pin Configuration of UART0
2SP
1SP
SP
P1_4
P1_5
P1_6
2SP
1SP
SP
Assigned Pin
PAR
PAR
0
PAR enabled
PRYE = 1
PRYE = 1
PAR enabled
0
PRYE = 0
PAR
disabled
PAR
disabled
PRYE = 0
0
0
Clock
synchronous
type
Clock
synchronous
type
0
UART
UART
0
0
Output
Input
UART (9 bits)
0
UART (9 bits)
I/O
I/O
UART (7 bits)
UART (8 bits)
Clock
synchronous
type
Clock
synchronous
type
UART (7 bits)
UART (8 bits)
D8
D8
Data bus low-order bits
Data bus high-order bits
Clock
synchronous
type
UART (8 bits)
UART (9 bits)
UART (8 bits)
UART (9 bits)
Clock
synchronous
type
Serial data output
Serial data input
Transfer clock I/O
UART (7 bits)
UART (7 bits)
D7
D7
D6
D6
MSB/LSB conversion circuit
MSB/LSB conversion circuit
D5
D5
SP: Stop bit
PAR: Parity bit
UART0 transmit register
D4
D4
UART0 receive register
Function
21. Serial Interface (UART0)
D3
D3
D2
D2
D1
D1
D0
D0
U0RB register
U0TB register
TXD0