upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 535

• Manufacturer Part Number: upd70f3422gj-gae-qs-ax
• Description: 32-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

Asynchronous Serial Interface (UARTA)
Bit position
2 to 0
Initial Value
Table 16-8
Address
Caution
Access
UAnBRS[7:0]
Note
Bit name
(2)
UAnCTL2 - UARTAn control register 2
The UAnCTL2 register is an 8-bit register that selects the baud rate (serial
transfer speed) clock of UARTAn.
This register can be read or written in 8-bit units.
<base> + 1
FF
Clear the UAnCTL0.UAnPWR bit to 0 or clear the UAnTXE and UAnRXE bits
to 00 before rewriting the UAnCTL2 register.
UAnCTL2 register contents
f
Preliminary User’s Manual U17566EE1V2UM00
UAnBRS7 UAnBRS6 UAnBRS5 UAnBRS4 UAnBRS3 UAnBRS2 UAnBRS1 UAnBRS0
UCLK
H
. This register is cleared by any reset.
R
7
: clock frequency selected by UAnCTL1.UAnCKS[2:0]
Function
Serial clock setting
BRS7
UAn
0
0
0
0
1
1
1
1
H
:
R
6
BRS6
UAn
0
0
0
0
1
1
1
1
:
BRS5
UAn
0
0
0
0
1
1
1
1
R
:
5
BRS4
UAn
0
0
0
0
1
1
1
1
:
BRS3
R
4
UAn
0
0
0
0
1
1
1
1
:
BRS2
UAn
0
1
1
1
1
1
1
1
:
R
3
BRS1
UAn
x
0
0
1
0
0
1
1
:
BRS0
R/W
UAn
2
x
0
1
0
0
1
0
1
:
252 f
253 f
254 f
255 f
k
4
5
6
x
:
R/W
1
Serial clock
Setting
prohibited
f
f
f
:
UCLK
UCLK
UCLK
UCLK
UCLK
UCLK
UCLK
Chapter 16
/4
/5
/6
/252
/253
/254
/255
R/W
0
535