UPD78F9418AGK-9EU Renesas Electronics America, UPD78F9418AGK-9EU Datasheet - Page 198

• Manufacturer Part Number: UPD78F9418AGK-9EU
• Manufacturer: Renesas Electronics America

Specifications of UPD78F9418AGK-9EU

• Lead Free Status / Rohs Status: Supplier Unconfirmed

196
(f)
Reading receive data
When the reception completion interrupt (INTSR00) is generated, receive data can be read by reading
the value of receive buffer register 00 (RXB00).
To read the receive data stored in receive buffer register 00 (RXB00), read while reception is enabled
(RXE00 = 1).
Remark
However, if it is necessary to read receive data after reception has stopped (RXE00 = 0),
read using either of the following methods.
Program example of (a) (BRGC00 = 00H (source clock = fx/2))
INTRXE:
Program example of (b)
INTRXE:
(a)
(b)
Read after setting RXE00 = 0 after waiting for one cycle or more of the source clock
selected by BRGC00.
Read after bit 2 (DIR00) of serial operation mode register 00 (CSIM00) is set (1).
NOP
CLR1 RXE00
MOV
SET1 CSIM00.2
CLR1 RXE00
MOV
CHAPTER 13 SERIAL INTERFACE 00
A, RXB00
A, RXB00
User’s Manual U13952EJ3V1UD
;<Reception completion interrupt routine>
;2 clocks
;Reception stopped
;Read receive data
;<Reception completion interrupt routine>
;DIR00 flag is set to LSB first
;Reception stopped
;Read receive data