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7721 Datasheet(PDF) 176 Page - Renesas Technology Corp

Part # 7721
Description  16-BIT SINGLE-CHIP MICROCOMPUTER
PDF  577 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7721 Datasheet(HTML) 176 Page - Renesas Technology Corp

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TIMER B
7721 Group User’s Manual
9–9
9.3 Timer mode
Fig. 9.3.1 Structures of timer Bi mode register and timer Bi register in timer mode
b7
b6
b5
b4
b3
b2
b1
b0
00
Bit
This bit is invalid in timer mode; its value is undefined at reading.
Nothing is assigned.
Bit name
Count source select bits
Functions
At reset
RW
These bits are invalid in timer mode.
Operating mode select bits
1
0 0 : Timer mode
b1 b0
0
!
!
0
2
RW
RW
3
RW
RW
Timer Bi mode register (i = 0 to 2) (Addresses 5B16 to 5D16)
!
0
0
0
–
Undefined
4
Undefined
5
6
7
0 0 : f2
0 1 : f16
1 0 : f64
1 1 : f512
b7 b6
RW
0
RW
0
RO
b7
b0
b7
b0
(b15)
(b8)
Timer B0 register (Addresses 5116, 5016)
Timer B1 register (Addresses 5316, 5216)
Timer B2 register (Addresses 5516, 5416)
RW
15 to 0
Bit
Functions
At reset
These bits can be set to “000016” to “FFFF16.”
Assuming that the set value = n, the counter
divides the count source frequency by (n + 1).
When reading, the register indicates the
counter value.
Undefined
RW
Note: Read from or write to this register in a unit of 16 bits.



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