4509 Datasheet, PDF (28/142 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4509 Group
P13/INT
I13
I12
One-sided edge I11
0 detection circuit
0
1
Both edges
1
detection circuit
INTSNC
P11/CNTR1
W60
0
1
PWM2
ORCLK
f(RING)
W11, W10
00
01
10
11
W12
(Note 1)
INTSNC S Q
I10
W52
R
T1UDF
W51
0
1
(TAB1)
Register B Register A
(T1HAB)
Reload register R1H (8) (Note 3)
Reload control circuit
Timer 1 (8)
TQ
PWM1
(T1R1L)
Reload register R1L (8)
(T1AB)
(T1AB)
(T1AB)
Register B Register A
(TAB1)
R W13
Timer 1
T1F
interrupt
Timer 1 underflow signal
(T1UDF)
P12/CNTR0
W50
0
1
T1UDF
ORCLK
STCK
INTSNC
W61
W21, W20
00
01
10
11
W22
(Note 2)
DQ
W61
0
1
(TAB2)
T R I13
Register B Register A
(T2HAB)
Reload register R2H (8) ^{(Note 4)}
Reload control circuit
Timer 2 (8)
TQ
PWM2
(T2R2L)
Reload register R2L (8)
(T2AB)
(T2AB)
(T2AB)
Register B Register A
(TAB2)
R W23
Timer 2
T2F
interrupt
P12/CNTR0
W53
0
Port P12 output
1
PWM1
W63
0
P11/CNTR1
1
PWMOD2
Port P11 output
QD
PWM2
T1UDF
W62
Notes 1: Timer 1 count start synchronous circuit is synchronized
with the valid edge of INT pin selected by bits 1 (I11) and
2 (I12) of register I1.
2: Timer 2 INT input period count circuit is used to count
W12 R ^T
the valid edge period of INT pin selected by bits 1 (I11)
and 2 (I12) of register I1.
3: When the PWM1 function is valid (W13=“1”), the value is
T1R1L:This instruction is used to transfer the contents of
reload register R1L to timer 1.
T2R2L:This instruction is used to transfer the contents of
reload register R2L to timer 2.
STCK:System clock
ORCLK:Prescaler output
Data is set automatically from each reload
register when timer underflows
(auto-reload function).
auto-reloaded alternately from reload register R1L and
R1H every timer 1 underflow.
When the PWM1 function is invalid (W13=“0”), the value
is auto-reloaded from reload register R1L only.
4: When the PWM2 function is valid (W23=“1”), the value is
auto-reloaded alternately from reload register R2L and
R2H every timer 2 underflow.
When the PWM2 function is invalid (W23=“0”), the value
is auto-reloaded from reload register R2L only.
Fig. 23 Timers structure (2)
Rev.1.02 2006.12.22 page 28 of 140
REJ03B0147-0102