tmp89fm42 TOSHIBA Semiconductor CORPORATION, tmp89fm42 Datasheet - Page 201

• Manufacturer Part Number: tmp89fm42
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

RA002
T001CR<T00RUN>
T00MOD<TFF0>
Source clock
Counter
Write to T00PWM
Double buffer
T00PWM
Write to T00REG
Double buffer
T00REG
PPG0 pin output
INTT00 interrupt
request
Figure 14-10 Operation When T00PWM (T00REG) and the Up Counter Have the Same
T00MOD<DBE0>
Source clock
Counter
Write to T00PWM
(T00REG)
T00PWM
(T00REG)
PPG0 pin output
Becomes the level selected at
TFF0 while the timer is stopped
Write m
Write p
m
m
p
p
LD
SET
Timer start
(Duty pulse)
Figure 14-9 8-bit PPG Mode Timing Chart
0
m
1
(1 cycle)
n-5
When the double buffer is enabled (T00MOD<DBE0>=”1”)
n
(T00PWM),0x28
(T001CR).0
p
Match detection
Match detection
m
Write r
m+1
r
Write s
n-4
s
(Duty pulse)
p
Counter
clear
s
r
0
r
1
(1 cycle)
Page 187
Value
Match detection
s
Match detection
Match detection
n-3
r
; Sets the timer register (duty pulse)
; 8Ps / (2/fcgck) = 0x28
; Starts TC00
Write n-2
r+1
(Duty pulse)
s
Counter
clear
0
r
n-2
1
(1 cycle)
n-2
Write t
t
s
Match detection
Match detection
r
Write w
r+1
w
n-1
(Duty pulse)
s
s
w
Counter
clear
0
t
1
(1 cycle)
w
Match detection
n
t
t+1
Timer stop
TMP89FM42
w
Counter
clear
Returns to the
level selected
at TFF0
0
1
0