UPD78F0988AGC-8BS Renesas Electronics America, UPD78F0988AGC-8BS Datasheet - Page 203

• Manufacturer Part Number: UPD78F0988AGC-8BS
• Manufacturer: Renesas Electronics America

Specifications of UPD78F0988AGC-8BS

• Lead Free Status / Rohs Status: Supplier Unconfirmed

10.5 Using Real-Time Output Port
10.6 Notes on Real-Time Output Port
When using the real-time output port, perform the following steps.
(1) Disable real-time output operation.
(2) Initial setting
(3) Enable the real-time output operation.
(4) Set the port output latch to 0 (only for real-time output port 0).
(5) Set the next output to RTBH0n and RTBL0n before the selected transfer trigger is generated.
(6) Sequentially set the next real-time output value to RTBH0n and RTBL0n by using the interrupt servicing
(1) Before performing the initial setting, disable the real-time output operation by clearing bit 7 (RTPOE0n) of real-
(2) Once the real-time output operation has been disabled (RTPOE0n = 0), be sure to set the same initial value
Clear bit 7 (RTPOE0n) of real-time output port control register n (RTPC0n) to 0.
• Set the initial value to the port output latch (real-time output port 0 only).
• Specify the real-time output port mode in 1-bit units.
• Select the operation mode (trigger and a valid edge).
• For real-time output port 0, set an initial value equal to the port output latch in real-time output buffer register
• Set DC control register n (DCCTLn).
RTPOE0n = 1
Remark For real-time output port 0, the value output by the real-time output operation is the ORed value
corresponding to the selected trigger.
Remark n = 0, 1
time output port control register n (RTPC0n) to 0 (n = 0, 1).
as the output latch to real-time output buffer register n (RTBH0n and RTBL0n) before enabling the real-time
output operation (RTPOE0n = 0
Set real-time output port mode register n (RTPM0n).
Set bits 4, 5, and 6 (EXTR00, BYTE00, and RTPEG00) of RTPC00 or set bit 5 (BYTE01) of RTPC01.
0 (RTBH00, RTBL00).
For real-time output port 1, set an initial value in real-time output buffer register 1 (RTBH01, RTBL01).
of the output latch of the port and real-time output (see Figure 10-1 (a)). Therefore, when real-
time output port 0 is used, the port output latch should be set to 0 after the real-time output operation
is enabled (RTPOE00 = 0
CHAPTER 10 REAL-TIME OUTPUT PORT
1) (n = 0, 1).
User’s Manual U13029EJ7V1UD
1) until the first transfer trigger is generated.
201