MB90580 Datasheet, PDF (295/395 Pages) Fujitsu Component Limited. – 16-BIT MICROCONTROLLER

20.3 Registers and Register Details
20.3.1.1 16-bit free-run timer data register
16-bit Timer Data Register (Upper)
15
14
Address: 00006D_{H T15 T14}
Read/write _{R/W R/W}
Initial value
0
0
13
T13
R/W
0
12
T12
R/W
0
11 10
T11 T10
R/W R/W
0
0
9
8
T09 T08
R/W R/W
0
0
Bit Number
TCDTH
16-bit Timer Data Register (Lower)
7
Address: 00006C_H
Read/write
Initial value
T07
R/W
0
6
5
4
3
2
1
0
Bit Number
T06 T05 T04 T03 T02 T01 T00 ^TCDTL
R/W R/W R/W R/W R/W R/W R/W
0
0
0
0
0
0
0
The data register can read the count value of the 16-bit free-run timer. The counter value is cleared to
’0000’ upon a reset. The timer value can be set by writing a value to this register. However, ensure that the
value is written while the operation is stopped (STOP=1). The data register must be accessed in word
access mode.
The 16-bit free-run timer is initialized upon the following factors:
• Reset
• Clear bit (CLR) of control status register
• A match between compare register 0 and the timer counter value (This can be performed only in an
appropriate mode.)
MB90580 Series
Chapter 20: 16-Bit I/O Timer 275