m5m51016btp Renesas Electronics Corporation., m5m51016btp Datasheet - Page 43

• Manufacturer Part Number: m5m51016btp
• Description: Renesas 16-bit Single-chip Microcomputer M16c Family / M16c/20 Series
• Manufacturer: Renesas Electronics Corporation.

M30245 Group
Rev.2.00 Oct 16, 2006
REJ09B0340-0200
Figure 2.2.28. Reading timer Ai register
2.2.12 Precautions for Timer A (timer mode)
(1) To clear reset, the count start flag is set to “0”. Set a value in the timer Ai register, then set the
(2) Reading the timer Ai register while a count is in progress allows reading, with arbitrary timing,
flag to “1”.
the value of the counter. Reading the timer Ai register with the reload timing shown in Figure
2.2.28 gets “FFFF
ter with a count halted but before the counter starts counting gets a proper value.
Counter value (Hex.)
Read value (Hex.)
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16
”. Reading the timer Ai register after setting a value in the timer Ai regis-
n = reload register content
2
2
1
1
0
0
Reload
FFFF
n
n – 1
n – 1
Time
2. Timer A