Renesas M16C Series User Manual

Timer A
M30240 Group
Rev.1.00 Sep 24, 2003 Page 67 of 360
Figure 1.61: Timer A-related registers (2)
Timer A4 up/down flag
Timer A3 up/down flag
Timer A2 up/down flag
Timer A1 up/down flag
Timer A0 up/down flag
Timer A2 two-phase pulse
signal processing select bit
Timer A3 two-phase pulse
signal processing select bit
Timer A4 two-phase pulse
signal processing select bit
Symbol Address When reset
UDF 0384
16 00 16
TA 4P
TA 3P
TA 2P
Up/down flag
Bit name FunctionBit symbol
WR
b7 b6 b5 b4 b3 b2 b1 b0
TA4UD
TA3UD
TA2UD
TA1UD
TA0UD
0 : Down count
1 : Up count
This specification becomes valid
when the up/down flag content is
selected for up/down switching
cause
0 : two-phase pulse signal
processing disabled
1 : two-phase pulse signal
processing enabled
When not using the two-phase
pulse signal processing function,
set the select bit to “0”
Symbol Address When reset
TABSR 0380
16 00 16
Count start flag
Bit name FunctionBit symbol WR
b7 b6 b5 b4 b3 b2 b1 b0
Timer B2 count start flag
Timer B1 count start flag
Timer B0 count start flag
Timer A4 count start flag
Timer A3 count start flag
Timer A2 count start flag
Timer A1 count start flag
Timer A0 count start flag
0 : Stops counting
1 : Starts counting
TB2S
TB1S
TB0S
TA 4S
TA 3S
TA 2S
TA 1S
TA 0S
Symbol Address When reset
TA0 0387
16 ,0386 16 Indeterminate
TA1 0389
16 ,0388 16 Indeterminate
TA2 038B
16 ,038A 16 Indeterminate
TA3 038D
16 ,038C 16 Indeterminate
TA4 038F
16 ,038E 16 Indeterminate
b7 b0 b7 b0
(b15) (b8)
Timer Ai register (Note)
WR
• Timer mode 0000 16 to FFFF 16
Counts an internal count source
Function
Values that can be set
• Event counter mode 0000 16 to FFFF 16
Counts pulses from an external source or timer overflow
• One-shot timer mode 0000 16 to FFFF 16
Counts a one shot width
• Pulse width modulation mode (16-bit PWM)
Functions as a 16-bit pulse width modulator
• Pulse width modulation mode (8-bit PWM)
Timer low-order address functions as an 8-bit
prescaler and high-order address functions as an 8-bit
pulse width modulator
00
16 to FE 16
(Both high-order
and low-order
addresses)
0000
16 to FFFE 16
Note: Read and write data in 16-bit units.

Renesas M16C Series Specifications

General

Brand	Renesas
Model	M16C Series
Category	Computer Hardware
Language	English