upd78f0114hgb-8es-a Renesas Electronics Corporation., upd78f0114hgb-8es-a Datasheet - Page 495
upd78f0114hgb-8es-a
Manufacturer Part Number
upd78f0114hgb-8es-a
Description
8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0114HGB-8ES-A.pdf
(505 pages)
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Serial
Interface
UART6
Serial
Interface
CSI10
Interrupt
Function
Serial clock
generation
Permissible
baud rate range
during reception
SOTB10:
Transmit buffer
register 10
SIO10: Serial
I/O shift register
10
CSIM10: Serial
operation mode
register 10
CSIC10: Serial
clock selection
register 10
3-wire serial I/O
mode
Communication
operation
SO10 output
IF1L: Interrupt
request flag
register
IF0L, IF0H,
IF1L: Interrupt
request flag
registers
Details of
Function
To use P10/SCK10/TxD0, P11/SI10/RxD0, and P12/SO10 as general-purpose
ports, set CSIC10 in the default status (00H).
Make sure that the baud rate error during reception satisfies the range shown in
(4) Permissible baud rate range during reception.
Make sure that the baud rate error during reception is within the permissible error
range, by using the calculation expression shown below.
Do not access SOTB10 when CSOT10 = 1 (during serial communication).
Do not access SIO10 when CSOT10 = 1 (during serial communication).
Be sure to clear bit 5 to 0.
When the internal oscillation clock is selected as the clock supplied to the CPU,
the clock of the internal oscillator is divided and supplied as the serial clock. At
this time, the operation of serial interface CSI10 is not guaranteed.
Do not write to CSIC10 while CSIE10 = 1 (operation enabled).
The phase type of the data clock is type 1 after reset.
Take relationship with the other party of communication when setting the port
mode register and port register.
Do not access the control register and data register when CSOT10 = 1 (during
serial communication).
If a value is written to TRMD10, DAP10, and DIR10, the output value of SO10
changes.
Be sure to clear bits 6 and 7 of IF1L to 0.
When operating a timer, serial interface, or A/D converter after standby release,
operate it once after clearing the interrupt request flag. An interrupt request flag
may be set by noise.
Use the 1-bit memory manipulation instruction (CLR1) for manipulating the flag of
the interrupt request flag register. A 1-bit manipulation instruction such as “IF0L.0
= 0;” and “_asm(“clr1 IF0L, 0”);” should be used when describing in C language,
because assembly instructions after compilation must be 1-bit memory
manipulation instructions (CLR1).
If an 8-bit memory manipulation instruction “IF0L & = 0xfe;” is described in C
language, for example, it is converted to the following three assembly instructions
after compilation:
mov
and
mov
In this case, at the timing between “mov a, IF0L” and “mov IF0L, a”, if the request
flag of another bit of the identical interrupt request flag register (IF0L) is set to 1, it
is cleared to 0 by “mov IF0L, a”. Therefore, care must be exercised when using an
8-bit memory manipulation instruction in C language.
a, IF0L
a, #0FEH
IF0L, a
APPENDIX D LIST OF CAUTIONS
User’s Manual U16961EJ4V0UD
Cautions
p. 297
p. 298
p. 303
p. 303
p. 304
p. 306
p. 306
p. 306
p. 306
p. 308
p. 310
p. 315
p. 321
p. 321
p. 322
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495
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