3069RF-ZTAT Datasheet, PDF (340/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

Channel Address*¹ Name
Abbre-
viation R/W
2
H'FFF78 Timer control register 2
16TCR2 R/W
H'FFF79 Timer I/O control register 2
TIOR2
R/W
H'FFF7A Timer counter 2H
16TCNT2H R/W
H'FFF7B Timer counter 2L
16TCNT2L R/W
H'FFF7C General register A2H
GRA2H R/W
H'FFF7D General register A2L
GRA2L R/W
H'FFF7E General register B2H
GRB2H R/W
H'FFF7F General register B2L
GRB2L R/W
Notes: 1. The lower 20 bits of the address in advanced mode are indicated.
2. Only 0 can be written in bits 3 to 0, to clear the flags.
Initial
Value
H'80
H'88
H'00
H'00
H'FF
H'FF
H'FF
H'FF
9.2 Register Descriptions
9.2.1 Timer Start Register (TSTR)
TSTR is an 8-bit readable/writable register that starts and stops the timer counter (16TCNT) in
channels 0 to 2.
Bit
7
—
Initial value
1
Read/Write
—
6
5
4
—
—
—
1
1
1
—
—
—
Reserved bits
3
2
1
0
—
STR2 STR1 STR0
1
0
0
0
—
R/W
R/W
R/W
Counter start 2 to 0
These bits start and
stop 16TCNT2 to 16TCNT0
TSTR is initialized to H'F8 by a reset and in standby mode.
Bits 7 to 3—Reserved: These bits cannot be modified and are always read as 1.
Bit 2—Counter Start 2 (STR2): Starts and stops timer counter 2 (16TCNT2).
Bit 2
STR2
0
1
Description
16TCNT2 is halted
16TCNT2 is counting
(Initial value)
Rev. 5.0, 09/04, page 318 of 978