tmp89fm46a TOSHIBA Semiconductor CORPORATION, tmp89fm46a Datasheet - Page 228

• Manufacturer Part Number: tmp89fm46a
• Description: Tlcs-870/c1 Series
• Manufacturer: TOSHIBA Semiconductor CORPORATION

RA005
T001CR<T01RUN>
T01MOD<TFF1>
Source clock
Counter
Write to T00PWM
Write to T01PWM
Double buffer
PWMAD3 to 0
PWMDUTY
PWM1 pin output
INTTC00 interrupt request
INTTC01 interrupt request
(Example) Operate TC00 and TC01 in the 12-bit PWM mode with the operation clock of fcgck/2 and output a duty pulse
Write m (0001)
Becomes the level selected at
TFF1 while the timer is stopped
Write k
nearly equivalent to 14.0625 μs in 51.2μs cycles (fcgck = 10 MHz)
(Actually, output a duty pulse of 225 μs in total in 16 cycles (819.2 μs))
km
km (0001)
0001
Figure 14-15 12-bit PWM Mode Timing Chart
Timer start
(Duty pulse)
SET
SET
LD
DI
SET
EI
LD
LD
LD
LD
0
km
1
256 counts
(Cycle 1)
When the double buffer is enabled (T01MOD<DBE1>=”1”)
Match detection
km
(P7FC).1
(P7CR).1
(POFFCR0),0x10
(EIRH).4
(T01MOD),0xF2
(T00PWM),0x65
(T01PWM),0x04
(T001CR),0x06
km
+1
(Duty pulse)
256
Overflow
Counter
clear
Interrupt request
0
km
256 counts
1
(Cycle 2)
Page 209
Match detection
km
km
+1
; Sets P7FC1 to "1"
; Sets P7CR1 to "1"
; Sets TC001EN to "1"
; Sets the interrupt master enable flag to "disable"
; Sets the INTTC00 interrupt enable register to "1"
; Sets the interrupt master enable flag to "enable"
; Selects the 12-bit PWM mode and fcgck/2
; Sets the timer register (duty pulse)
; (14.0625μs × 16) / (2/fcgck) = 0x465
; Sets the timer register (duty pulse)
; Starts TC00 and TC01
256
Overflow
(Duty pulse)
Counter
clear
Interrupt request
0
km+1
1
256 counts
Additional pulse
(Cycle 9)
Match detection
km
km
+1
(Duty pulse)
Overflow
256
Interrupt request
Counter
clear
0
km
256 counts
(Cycle 16)
1
Write s (0011)
Write r
rs (0011)
Match detection
km
km
+1
TMP89FM46A
(Duty pulse)
256
rs
Counter
clear
0011
Interrupt request
0
(Cycle 17)
rs
1
rs