R5F21292SNSP#U0 Renesas Electronics America, R5F21292SNSP#U0 Datasheet - Page 258

• Manufacturer Part Number: R5F21292SNSP#U0
• Description: MCU 3/5V 16K+2K 20PIN-SSOP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/29r

Specifications of R5F21292SNSP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: LED, POR, Voltage Detect, WDT
• Number Of I /o: 13
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.2 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: R0K521276S000BE - KIT DEV RSK-R8C/26-29
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/28 Group, R8C/29 Group
Rev.2.10
REJ09B0279-0210
Table 15.2
NOTE:
Table 15.3
U0TB
U0RB
U0BRG
U0MR
U0C0
U0C1
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.)
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.
Pin Name
Sep 26, 2008
Registers Used and Settings in Clock Synchronous Serial I/O Mode
I/O Pin Functions in Clock Synchronous Serial I/O Mode
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
Page 239 of 441
Bit
Output serial data
Input serial data
Output transfer clock CKDIR bit in U0MR register = 0
Input transfer clock
Function
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 UiBRG 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
(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 = 1
PD1_6 bit in PD1 register = 0
Function
Selection Method
(1)
15. Serial Interface