UPD78F0138 NEC, UPD78F0138 Datasheet - Page 305

• Manufacturer Part Number: UPD78F0138
• Description: (UPD78xxxx) 8-Bit Single-Chip Microcontrollers
• Manufacturer: NEC

(5) Baud rate generator control register 6 (BRGC6)
Address: FF57H After reset: FFH R/W
BRGC6
Cautions 1. Make sure that bit 6 (TXE6) and bit 5 (RXE6) of the ASIM6 register = 0 when rewriting the
Remarks 1. f
Symbol
This register sets the division value of the 8-bit counter of serial interface UART6.
BRGC6 can be set by an 8-bit memory manipulation instruction.
RESET input sets this register to FFH.
Remark BRGC6 can be refreshed (the same value is written) by software during a communication operation
2. The baud rate is the output clock of the 8-bit counter divided by 2.
2. k: Value set by MDL67 to MDL60 bits (k = 8, 9, 10, ..., 255)
3. ×: Don’t care
MDL67
MDL67
(when bit 7 (POWER6) and bit 6 (TXE6) of ASIM6 = 1 or bit 7 (POWER6) and bit 5 (RXE6) of ASIM6
= 1).
7
0
0
0
0
1
1
1
1
•
•
•
•
•
MDL67 to MDL60 bits.
XCLK6
Figure 14-9. Format of Baud Rate Generator Control Register 6 (BRGC6)
MDL66
MDL66
: Frequency of base clock selected by the TPS63 to TPS60 bits of CKSR6 register
6
0
0
0
0
1
1
1
1
•
•
•
•
•
MDL65
MDL65
5
0
0
0
0
1
1
1
1
•
•
•
•
•
CHAPTER 14 SERIAL INTERFACE UART6
MDL64
MDL64
4
0
0
0
0
1
1
1
1
•
•
•
•
•
User’s Manual U16228EJ2V0UD
MDL63
MDL63
3
0
1
1
1
•
•
•
•
•
1
1
1
1
MDL62
MDL62
2
×
0
0
0
1
1
1
1
•
•
•
•
•
MDL61
MDL61
1
×
0
0
1
0
0
1
1
•
•
•
•
•
MDL60
MDL60
0
×
0
1
0
•
•
•
•
•
0
1
0
1
252
253
254
255
10
k
×
8
9
•
•
•
•
•
Setting prohibited
f
f
f
f
f
f
f
XCLK6
XCLK6
XCLK6
XCLK6
XCLK6
XCLK6
XCLK6
Output clock selection of
/8
/9
/10
/252
/253
/254
/255
8-bit counter
•
•
•
•
•
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