Renesas RL78/G1H User Manual

RL78/G1H CHAPTER 14 SERIAL ARRAY UNIT
R01UH0575EJ0120 Rev. 1.20 Page 419 of 920
Dec 22, 2016
Figure 14 - 84 Procedure for Resuming UART Reception
Caution After is set RXEmn bit to 1 of SCRmn register, set the SSmn = 1 from an interval of at least four clocks of
f
MCK.
Remark 1.
If PER0 is rewritten while stopping the communication target and the clock supply is stopped, wait until the
communication target stops or communication finishes, and then perform initialization instead of restarting the
communication.
Remark 2. r: Channel number (r = n − 1)
Starting setting for resumption
Changing setting of the SPSm register
Changing setting of the SDRmn register
Changing setting of the SMRmn
and SMRmr registers
Changing setting of the SCRmn register
Writing to the SSm register
Re-set the register to change the operation clock
setting.
Re-set the register to change the transfer baud
rate setting (setting the transfer clock by dividing
the operation clock (f
MCK)).
Re-set the registers to change serial mode
registers mn, mr (SMRmn, SMRmr) setting.
Re-set the register to change serial communication
operation setting register mn (SCRmn) setting.
Set the SSmn bit of the target channel to 1 and set
the Semn bit to 1 (to enable operation).
Become wait for start bit detection.
(Selective)
(Selective)
(Selective)
(Selective)
(Essential)
Completing resumption
setting
Clearing error flag
If the FEF, PEF, and OVF flags remain
set, clear them using serial flag clear trigger
register mn (SIRmn).
(Selective)
Setting port
Enable data input of the target channel by setting a
port register and a port mode register.
(Essential)
Completing communication
target preparations?
No
Stop the target for communication or wait until
completes its communication operation.
Yes
(Essential)

Renesas RL78/G1H Specifications

General

Brand	Renesas
Model	RL78/G1H
Category	Microcontrollers
Language	English