R5F21346CNFP#U0 Renesas Electronics America, R5F21346CNFP#U0 Datasheet - Page 524

MCU 1KB FLASH 32K ROM 48-LQFP

R5F21346CNFP#U0

Manufacturer Part Number
R5F21346CNFP#U0
Description
MCU 1KB FLASH 32K ROM 48-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/3x/34Cr
Datasheet

Specifications of R5F21346CNFP#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
43
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2.5K 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
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-

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Part Number:
R5F21346CNFP#U0
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R8C/34C Group
REJ09B0586-0100 Rev.1.00 Jan 13, 2010
Page 491 of 723
23.5.7
If a start condition is detected while the STAC bit is set to 1 (UART2 initialization enabled), the serial interface
operates as described below.
• The transmit shift register is initialized, and the contents of the U2TB register are transferred to the transmit
• The receive shift register is initialized, and the serial interface starts receiving data when the next clock pulse
• The SWC bit is set to 1 (SCL wait output enabled). Consequently, the SCL2 pin is pulled low at the falling
Note that when UART2 transmission/reception is started using this function, the TI bit does not change state.
Select the external clock as the transfer clock to start UART2 transmission/reception with this setting.
shift register. In this way, the serial interface starts sending data when the next clock pulse is applied.
However, the UART2 output value does not change state and remains the same as when a start condition was
detected until the first bit of data is output in synchronization with the input clock.
is applied.
edge of the 9th clock pulse.
Initialization of Transmission/Reception
23. Serial Interface (UART2)

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