m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 453
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m37905
Manufacturer Part Number
m37905
Description
Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.M37905.pdf
(565 pages)
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APPENDIX
Appendix 2. Control registers
20-22
Timer A0 register (Addresses 47
Timer A1 register (Addresses 49
Timer A2 register (Addresses 4B
Timer A3 register (Addresses 4D
Timer A4 register (Addresses 4F
Note: Reading from or writing to this register must be performed in a unit of 16 bits.
Timer Ai mode register (i = 0 to 4) (Addresses 56
Timer Ai mode register (i = 5 to 9) (Addresses D6
15 to 0 Any value in the range from “0000
Bit
Bit
Timer mode
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
Pulse output function select bit
Gate function select bits
Fix this bit to “0” in timer mode.
Count source select bits
Bit name
16
16
16
16
16
, 46
, 48
, 4A
, 4E
, 4C
16
16
16
16
16
16
7905 Group User’s Manual Rev.1.0
)
)
b1 b0
b4 b3
)
0 : No pulse output
1 : Pulse output
0 0 :
0 1 :
1 0 :
1 1 :
)
0 0 : Timer mode
See Table 7.2.3.
)
” to “FFFF
(TAi
pin.)
(TAi
Function
OUT
OUT
No gate function
(TAi
port pin.)
Gate function
(Counter is active only while TAi
put signal is at “L” level.)
Gate function
(Counter is active only while TAi
put signal is at “H” level.)
16
16
16
pin functions as a programmable I/O port
pin functions as a pulse output pin.)
(b15)
” can be set.
IN
to 5A
Timer A5 register (Addresses C7
Timer A6 register (Addresses C9
Timer A7 register (Addresses CB
Timer A8 register (Addresses CD
Timer A9 register (Addresses CF
to DA
b7
pin functions as a programmable I/O
16
16
)
)
Function
(b8)
b0
IN
IN
b7
b7 b6 b5 b4 b3 b2 b1 b0
pin’s in-
pin’s in-
16
16
16
0
16
16
, C6
, C8
, CE
, CA
, CC
At reset
Undefined
At reset
16
16
16
16
0
0
0
0
0
0
0
0
16
)
)
)
)
)
R/W
R/W
RW
RW
RW
RW
RW
RW
RW
RW
RW
0 0
b0
Reference
Reference
10-15
7-12
7-12
9-12
9-23
7-16
7-15
7-5
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