R5F21346CNFP#U0 Renesas Electronics America, R5F21346CNFP#U0 Datasheet - Page 528
R5F21346CNFP#U0
Manufacturer Part Number
R5F21346CNFP#U0
Description
MCU 1KB FLASH 32K ROM 48-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/3x/34Cr
Datasheet
1.R5F21346CNFPU0.pdf
(759 pages)
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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R8C/34C Group
REJ09B0586-0100 Rev.1.00 Jan 13, 2010
Page 495 of 723
Figure 23.19
23.6.1
(1)
(2)
(3)
Figure 23.19 shows a Sample Flowchart of Multiprocessor Data Transmission. Set the MPBT bit in the U2TB
register to 1 for ID transmission cycles. Set the MPBT bit in the U2TB register to 0 for data transmission cycles.
Other operations are the same as in universal asynchronous receiver/transmitter mode (UART mode).
Set the MPBT bit in the U2TB register
Read the TI bit in the U2C1 register
Multiprocessor Transmission
in the U2C1 register to 0
Write transmit data to
Read the TXEPT bit
in the U2C0 register
data transmission?
the U2TB register
Sample Flowchart of Multiprocessor Data Transmission
Set the TE bit
TXEPT = 1?
Continue
TI = 1?
Start
End
Yes
Yes
No
Yes
No
No
(1) Read the U2C1 register to confirm that the TI bit is
(2) When transmission completes, the TXEPT bit is set
(3) To continue data transmission, read that the TI bit is 1
set to 1. Then set the MPBT bit in the U2TB register
to 0 or 1 and write transmit data to the U2TB
register.
Writing data to the U2TB register sets the TI bit to 0
automatically.
to 1 automatically.
and write data to the U2TB register. Writing data to
the U2TB register sets the TI bit to 0 automatically.
23. Serial Interface (UART2)
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