R5F21334CNFP#U0 Renesas Electronics America, R5F21334CNFP#U0 Datasheet - Page 379
R5F21334CNFP#U0
Manufacturer Part Number
R5F21334CNFP#U0
Description
MCU 1KB FLASH 16K ROM 32-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/3x/33Cr
Datasheet
1.R5F21331CNFPU0.pdf
(622 pages)
Specifications of R5F21334CNFP#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
27
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 12x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
32-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
R5F21334CNFP#U0R5F21334CNFP#V2
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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R8C/33C Group
REJ09B0570-0100 Rev.1.00 Dec. 14, 2009
Page 349 of 589
Figure 22.9
22.4.2
22.4.3
If communication is aborted or a communication error occurs while transmitting or receiving in UART mode,
follow the procedures below:
(1) Set the TE bit in the U2C1 register to 0 (transmission disabled) and the RE bit to 0 (reception disabled).
(2) Set bits SMD2 to SMD0 in the U2MR register to 000b (serial interface disabled).
(3) Set bits SMD2 to SMD0 in the U2MR register to 100b (UART mode, transfer data 7 bits long), 101b
(4) Set the TE bit in the U2C1 register to 1 (transmission enabled) and the RE bit to 1 (reception enabled).
As shown in Figure 22.9, use the UFORM bit in the U2C0 register to select the transfer format. This function is
enabled when transfer data is 8 bits long. Figure 22.9 shows the Transfer Format.
(UART mode, transfer data 8 bits long), or 110b (UART mode, transfer data 9 bits long).
Measure for Dealing with Communication Errors
LSB First/MSB First Select Function
(1) UFORM Bit in U2C0 Register = 0 (LSB first)
(2) UFORM Bit in U2C0 Register = 1 (MSB first)
Transfer Format
The above applies when:
CLK2
TXD2
RXD2
CLK2
TXD2
RXD2
• CKPOL bit in U2C0 register = 0 (transmit data output at the falling edge and
• U2LCH bit in U2C1 register = 0 (not inverted)
• STPS bit in U2MR register = 0 (one stop bit)
• PRYE bit in U2MR register = 1 (parity enabled)
receive data input at the rising edge of the transfer clock)
ST
ST
ST
ST
D0
D0
D7
D7
D1
D1
D6
D6
D2
D2
D5
D5
D3
D3
D4
D4
D4
D4
D3
D3
D5
D5
D2
D2
D6
D6
D1
D1
D7
D7
D0
D0
ST: Start bit
P: Parity bit
SP: Stop bit
P
P
P
P
22. Serial Interface (UART2)
SP
SP
SP
SP
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