RX610 Group
17. 8-Bit Timer (TMR)
R01UH0032EJ0120 Rev.1.20
Page 565 of 1006
Feb 20, 2013
17.2
Register Descriptions
Table 17.3 shows the registers of the TMR.
Table 17.3 Registers of TMR
Unit
Channel
Register Name
Symbol
Value after
Reset
Address
*
Access
Size
0
TMR0
Timer counter
TCNT
00h
0008 8208h
8 or 16
Time constant register A
TCORA
FFh
0008 8204h
8 or 16
Time constant register B
TCORB
FFh
0008 8206h
8 or 16
Timer control register
TCR
00h
0008 8200h
8
Timer counter control register
TCCR
00h
0008 820Ah
8 or 16
Timer control/status register
TCSR
x0h
0008 8202h
8
TMR1
Timer counter
TCNT
00h
0008 8209h
8 or 16
*
Time constant register A
TCORA
FFh
0008 8205h
8 or 16
*
Time constant register B
TCORB
FFh
0008 8207h
8 or 16
*
Timer control register
TCR
00h
0008 8201h
8
Timer counter control register
TCCR
00h
0008 820Bh
8 or 16
*
Timer control/status register
TCSR
x0h
0008 8203h
8
1
TMR2
Timer counter
TCNT
00h
0008 8218h
8 or 16
Time constant register A
TCORA
FFh
0008 8214h
8 or 16
Time constant register B
TCORB
FFh
0008 8216h
8 or 16
Timer control register
TCR
00h
0008 8210h
8
Timer counter control register
TCCR
00h
0008 821Ah
8 or 16
Timer control/status register
TCSR
x0h
0008 8212h
8
TMR3
Timer counter
TCNT
00h
0008 8219h
8 or 16
*
Time constant register A
TCORA
FFh
0008 8215h
8 or 16
*
Time constant register B
TCORB
FFh
0008 8217h
8 or 16
*
Timer control register
TCR
00h
0008 8211h
8
Timer counter control register
TCCR
00h
0008 821Bh
8 or 16
*
Timer control/status register
TCSR
x0h
0008 8213h
8
Note:
*
Odd addresses should not be accessed in 16-bit units. When accessing a register in 16-bit units, access the
address of the TMR0 or TMR2 register. Table 17.4 lists register allocation for 16-bit access.
Table 17.4 Register Allocation for 16-Bit Access
Address
Upper 8 Bits
Lower 8 Bits
0008 8208h
TMR0.TCNT
TMR1.TCNT
0008 8204h
TMR0.TCORA
TMR1.TCORA
0008 8206h
TMR0.TCORB
TMR1.TCORB
0008 820Ah
TMR0.TCCR
TMR1.TCCR
0008 8218h
TMR2.TCNT
TMR3.TCNT
0008 8214h
TMR2.TCORA
TMR3.TCORA
0008 8216h
TMR2.TCORB
TMR3.TCORB
0008 821Ah
TMR2.TCCR
TMR3.TCCR