7480_M Datasheet, PDF (220/337 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 7470 SERIES

APPLICATIONS
2.2 Timer X and Timer Y
Initialize
RESET (Note 1)
SEI
Set timer X mode register
b7
b0
1 0 ^{× ×} 0 0 0 0 TXM(Address 00F616)
Timer • event count mode
Writing to latch and timer simultaneously
Timer X count source: f(XIN)/16
Timer X ← C34F16 (Note 2)
Timer X interrupt request bit ← 0
Timer X interrupt enable bit ← 1
Set Timer XY control register
b7
b0
0 TXYCON(Address 00F816)
Timer X count started
CLI
Processing
Timer X interrupt generated every 100 ms
Timer X interrupt service routine
100-ms periodic processing
RTI
Notes 1: State after system is released from reset
• Timer X stop control bit = 1 (count stopped)
2: • C34F16 = 50000 – 1
• Write in order of low-order to high-order byte.
Figure 2.2.2 Control Procedure Example of 100-ms Processing
7480 Group and 7481 Group User's Manual
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