m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 160

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

Fig. 8.3.1 Structures of timer Bi register and timer Bi mode register in timer mode
Timer B0 register (Addresses 51
Timer B1 register (Addresses 53
Timer B2 register (Addresses 55
Note: Reading from or writing to this register must be performed in a unit of 16 bits.
X : It may be either “0” or “1.”
Timer Bi mode register (i = 0 to 2) (Addresses 5B
15 to 0 Any value in the range from “0000
Bit
Bit
0
1
2
3
4
5
6
7
Assuming that the set value = n, the counter divides the count source frequency by (n + 1).
When reading, the register indicates the counter value.
Operating mode select bits
These bits are invalid in timer mode.
This bit is invalid in timer mode; its value is undefined at reading.
Count source select bits
Bit name
16
16
16
, 50
, 52
, 54
7905 Group User’s Manual Rev.1.0
16
16
16
16
)
)
)
b1 b0
0 0 : Timer mode
b7 b6
0 0 : f
0 1 : f
1 0 : f
1 1 : f
” to “FFFF
Function
2
16
64
512
16
16
(b15)
” can be set.
to 5D
b7
16
)
Function
(b8)
b0
b7
b7 b6 b5 b4 b3 b2 b1 b0
X
8.3 Timer mode
Undefined
X
At reset
At reset
Undefined
X
0
0
0
0
0
0
0
TIMER B
X
R/W
R/W
RW
RW
RW
RW
RW
RW
RW
0 0
RO
—
b0
8-9