R5F21257SNFP#U0 Renesas Electronics America, R5F21257SNFP#U0 Datasheet - Page 398

• Manufacturer Part Number: R5F21257SNFP#U0
• Description: IC R8C/25 MCU FLASH 52LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/25r

Specifications of R5F21257SNFP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, Voltage Detect, WDT
• Number Of I /o: 41
• Program Memory Size: 48KB (48K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.5K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 52-LQFP
• For Use With: R0K521256S000BE - KIT EVAL STARTER FOR R8C/25
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/24 Group, R8C/25 Group
Rev.3.00
REJ09B0244-0300
Figure 17.11
17.4.3
IR bit in the TRAIC
TE bit in the U0C1
The bus collision detection function can be used when UART0 is enabled for transmission (TE bit in the U0C1
register = 1).
Figure 17.11 shows the Typical Operation when a Bus Collision is Detected.
BCDCT flag in the
LINCR register
LINST register
Feb 29, 2008
Transfer clock
LINE bit in the
Bus Collision Detection Function
RXD0 pin
TXD0 pin
register
register
Typical Operation when a Bus Collision is Detected
1
0
1
0
1
0
1
0
1
0
1
0
1
0
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Set to 1 by a program
Set to 1 by a program
Cleared to 0 upon
acceptance of interrupt
request or by a program
Set by writing 1 to
the B2CLR bit in the
LINST register
17. Hardware LIN