UPD78F1502AGK-GAK-AX Datasheet, PDF (477/1031 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcontrollers

78K0R/Lx3
CHAPTER 14 SERIAL ARRAY UNIT
(11) Serial output enable register m (SOEm)
SOEm is a register that is used to enable or stop output of the serial communication operation of each channel.
Channel n that enables serial output cannot rewrite by software the value of SOmn of the serial output register m
(SOm) to be described below, and a value reflected by a communication operation is output from the serial data
output pin.
For channel n, whose serial output is stopped, the SOmn value of the SOm register can be set by software, and
that value can be output from the serial data output pin. In this way, any waveform of the start condition and stop
condition can be created by software.
SOEm can be set by a 16-bit memory manipulation instruction.
The lower 8 bits of SOEm can be set with an 1-bit or 8-bit memory manipulation instruction with SOEmL.
Reset signal generation clears this register to 0000H.
Figure 14-14. Format of Serial Output Enable Register m (SOEm)
Address: F012AH, F012BH After reset: 0000H R/W
Symbol
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
SOE0
0
0
0
0
0
0
0
0
0
0
0
0
0 SOE SOE SOE
02 01 00
Address: F016AH, F016BH After reset: 0000H R/W
Symbol
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
SOE1
0
0
0
0
0
0
0
0
0
0
0
0
0 SOE 0 SOE
12
10
SOE
mn
Serial output enable/disable of channel n
0 Stops output by serial communication operation.
1 Enables output by serial communication operation.
Caution Be sure to clear bits 15 to 3 of SOE0, and bits 1 and 15 to 3 of SOE1 to “0”.
Remark m: Unit number (m = 0, 1), n: Channel number (n = 0 to 2),
mn = 00 to 02, 10, 12
R01UH0004EJ0501 Rev.5.01
461
Jun 20, 2011