upd70f3017ay Renesas Electronics Corporation., upd70f3017ay Datasheet - Page 347

• Manufacturer Part Number: upd70f3017ay
• Description: V850/sa1tm 32-/16-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

13.7 Cautions
(1) Before performing initialization, disable the real-time output operation by clearing bit 7 (RTPOE) of the real-time
(2) Once the real-time output operation is disabled (RTPOE = 0), be sure to set the same initial value as the output
(3) Operation cannot be guaranteed if a conflict between the following signals occurs. Use a software to avoid a
output port control register (RTPC) to 0.
latch to the real-time output buffer registers (RTBH and RTBL) before enabling the real-time output operation
(RTPOE = 0 → 1).
conflict.
• Conflict between the switch operation from the real-time output port mode to the port mode (RTPOE = 0) and
• Conflict between the write operation to the real-time output buffer register (RTBL, RTBH) in the real-time output
the valid edge of the selected real-time output trigger
port mode and the valid edge of the selected real-time output trigger
CHAPTER 13 REAL-TIME OUTPUT FUNCTION (RTO)
User’s Manual U12768EJ4V1UD
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