m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 169

• Manufacturer Part Number: m37905
• Description: Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
• Manufacturer: Renesas Electronics Corporation.

[Precautions for event counter mode]
Fig. 8.4.5 Reading timer Bi register
TIMER B
[Precautions for event counter mode]
8-18
While counting is in progress, by reading the timer Bi register, the counter value can be read out at
arbitrary timing. However, if the timer Bi register is read at the reload timing shown in Figure 8.4.5, a value
“FFFF
with the counter stopped until the counter starts counting, the set value is correctly read out.
16
” is read out. If reading is performed in the period from when a value is set into the timer Bi register
Counter value
Read value
(Hex.)
(Hex.)
n = Reload register’s contents
7905 Group User’s Manual Rev.1.0
2
2
1
1
0
0
Reload
FFFF n – 1
n
Time
n – 1