R5F211B1SP#U0 Renesas Electronics America, R5F211B1SP#U0 Datasheet - Page 177

• Manufacturer Part Number: R5F211B1SP#U0
• Description: IC R8C MCU FLASH 4K 20SSOP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/1Br

Specifications of R5F211B1SP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SIO, SSU, UART/USART
• Peripherals: LED, POR, Voltage Detect, WDT
• Number Of I /o: 13
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-SSOP
• For Use With: R0K5211B4S001BE - KIT STARTER FOR R8C/18191A1BR0K5211B4S000BE - KIT DEV EVALUATION R8C/1BR0E521174CPE10 - EMULATOR COMPACT R8C/18/19/1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/1A Group, R8C/1B Group
Rev.1.30
REJ09B0252-0130
Table 15.2
NOTE:
Table 15.3
U0TB
U0RB
U0BRG
U0MR
U0C0
U0C1
UCON
TXD0 (P1_4)
RXD0 (P1_5)
CLK0 (P1_6)
Table 15.3 lists the I/O Pin Functions in Clock Synchronous Serial I/O Mode. The TXD0 pin outputs “H” level
between the operating mode selection of UART0 and transfer start. (If the NCH bit is set to 1 (N-channel open-
drain output), this pin is in a high-impedance state.)
Pin Name
1. Set bits which are not in this table to 0 when writing to the above registers in clock synchronous
Register
serial I/O mode.
Dec 08, 2006
Registers Used and Settings in Clock Synchronous Serial I/O Mode
I/O Pin Functions in Clock Synchronous Serial I/O Mode
Output serial data
Input serial data
Output transfer clock
Input transfer clock
0 to 7
0 to 7
OER
0 to 7
SMD2 to SMD0
CKDIR
CLK1 to CLK0
TXEPT
NCH
CKPOL
UFORM
TE
TI
RE
RI
U0IRS
U0RRM
CNTRSEL
Function
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Bit
Set data transmission.
Data reception can be read.
Overrun error flag
Set bit rate.
Set to 001b.
Select the internal clock or external clock.
Select the count source in the U0BRG register.
Transmit register empty flag
Select TXD0 pin output mode.
Select the transfer clock polarity.
Select the LSB first or MSB first.
Set this bit to 1 to enable transmission/reception.
Transmit buffer empty flag
Set this bit to 1 to enable reception.
Reception complete flag
Select the UART0 transmit interrupt source.
Set this bit to 1 to use continuous receive mode.
Set this bit to 1 to select P1_5/RXD0/CNTR01/INT11.
(Outputs dummy data when performing reception only.)
PD1_5 bit in PD1 register = 0
(P1_5 can be used as an input port when performing
transmission only.)
CKDIR bit in U0MR register = 0
CKDIR bit in U0MR register = 1
PD1_6 bit in PD1 register = 0
Selection Method
Function
(1)
15. Serial Interface