R5F212A8SNFP#U0 Renesas Electronics America, R5F212A8SNFP#U0 Datasheet - Page 396

• Manufacturer Part Number: R5F212A8SNFP#U0
• Description: IC R8C/2A MCU FLASH 64LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/2Ar

Specifications of R5F212A8SNFP#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: 55
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 3K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 5.5 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 64-LQFP
• For Use With: R0K5212D8S001BE - KIT STARTER FOR R8C/2DR0K5212D8S000BE - KIT DEV FOR R8C/2D
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/2A Group, R8C/2B Group
Rev.2.00
REJ09B0324-0200
15. Serial Interface
The serial interface consists of three channels (UART0 to UART2). Each UARTi (i = 0 to 2) has an exclusive timer to
generate the transfer clock and operates independently.
Figure 15.1 shows a UARTi (i = 0 to 2) Block Diagram. Figure 15.2 shows a UARTi Transmit/Receive Unit. Figure
15.3 shows a Block Diagram of CLK1 and CLK2 Pin Switching Unit.
UARTi has two modes: clock synchronous serial I/O mode and clock asynchronous serial I/O mode (UART mode).
Figures 15.4 to 15.8 show the registers associated with UARTi.
Figure 15.1
CLK1 (P0_5)
CLK1 (P6_5)
CLK11PSEL to CLK10PSEL
UARTj (j = 0 or 2)
UART1
RXD1
RXDj
CLKj
Nov 26, 2007
CLK1 to CLK0 = 00b
CLK1 to CLK0 = 00b
= 00b
= 01b
= 10b
f32
f32
f1
f1
f8
f8
UARTi (i = 0 to 2) Block Diagram
= 01b
= 10b
= 01b
= 10b
polarity
switch
circuit
CLK
polarity
switch
circuit
CLK
TXD1EN
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Clock synchronous type
(when internal clock is selected)
CKDIR = 0
Internal
CKDIR = 0
Internal
External
CKDIR = 1
External
CKDIR = 1
U0BRG register
U1BRG register
1/(n0+1)
1/(n0+1)
1/16
1/16
1/16
1/16
1/2
1/2
Clock synchronous type
(when internal clock is selected)
Clock synchronous type
(when external clock is selected)
Clock synchronous type
(when internal clock is selected)
Clock synchronous type
(when external clock is selected)
UART reception
UART transmission
UART reception
UART transmission
synchronous type
synchronous type
synchronous type
synchronous type
Clock
Clock
Clock
Clock
Reception control
Reception control
Transmission
control circuit
Transmission
control circuit
CKDIR = 0
CKDIR = 1
CKDIR = 0
CKDIR = 1
circuit
circuit
CKDIR: Bit in UiMR register
CLK0 to CLK1: Bits in UiC0 register
CLK10PSEL to CLK11PSEL: Bits in U1SR register
U1PINSEL: Bit in PMR register
i = 0 to 2
Receive
clock
Receive
clock
Transmit
clock
Transmit
clock
Transmit/
Transmit/
receive
receive
unit
unit
15. Serial Interface
TXDj
TXD1