r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 403

• Manufacturer Part Number: r5f21368sdfp
• Description: Renesas Mcu R8c Family / R8c/3xt-a Series
• Manufacturer: Renesas Electronics Corporation.

Under development
R8C/36T-A Group
R01UH0240EJ0001 Rev.0.01
Apr 28, 2011
Figure 19.1
fC1
f32
CLK1 and CLK0
RXD
f1
f8
CLK
= 00b
= 01b
= 10b
= 11b
CKDIR: Bit in U0MR register
CLK0, CLK1: Bits in U0C0 register
polarity
switch
circuit
CLK
Preliminary document
Specifications in this document are tentative and subject to change.
UART0 Block Diagram
CKDIR = 0
Internal
External
CKDIR = 1
Clock synchronous type (internal clock selected)
Clock synchronous type (external clock selected)
1/(n + 1)
U0BRG
register
1/16
1/16
1/2
Clock synchronous type
(internal clock selected)
Clock synchronous type
Clock synchronous type
UART transmission
UART reception
CKDIR = 0
CKDIR = 1
Transmit
Receive
control
control
circuit
circuit
Transmit
Receive
clock
clock
19. Serial Interface (UART0)
Transmit/
receive
unit
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