CHAPTER 9 TIMER/COUNTER FUNCTION
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User’s Manual U15195EJ5V0UD
Table 9-12. Meaning of Signals in Block Diagram
Signal Name
Meaning
CASC
Note 1
TM21 count signal input in 32-bit mode
CNT
Count value of timer 2 (CNT = MAX.: Maximum value count signal output of timer 2 (generated
when TM2n = FFFFH), CNT = 0: Zero count signal output of timer 2 (generated when TM2n =
0000H))
CT
TM2n count signal input in 16-bit mode
CTC
TM21 count signal input in 32-bit mode
ECLR
External control signal input from TCLR2 input
ED1, ED2
Capture event signal input from edge selector
R
Note 2
Compare match signal input (subchannel 0/5)
RA
TM20 zero count signal input (reset signal of output circuit)
RB
TM21 zero count signal input (reset signal of output circuit)
RELOAD2A
TM20 zero count signal input (generated when TM20 = 0000H)
RELOAD2B
TM21 zero count signal input (generated when TM21 = 0000H)
RN
Subchannel x interrupt signal input (reset signal of output circuit)
S/T
Subchannel x interrupt signal input (set signal of output circuit)
TCOUNTE0, TCOUNTE1
Timer 2 count enable signal input
TINEm
Timer 2 subchannel m capture event signal input
Notes 1.
TM21 performs a count operation when CASC (CNT = MAX. for TM20) is generated and the rising
edge of CTC is detected in the 32-bit mode.
2.
TM20/TM21 clear by subchannel 0/5 compare match or count direction can be controlled.
Remark
m = 0 to 5
n = 0, 1
x = 1 to 4