Page 196
14. 8-bit Timer Counter (TC0)
TMP89FM42
RA002
Figure 14-13 Examples of Inserting Additional Pulses
14.4.7.2 Operations
Setting T001CR<T01RUN> to "1" allows the up counter to increment based on the selected source
clock. When a match between the lower 8 bits of the up counter value and the value set to PWMDUTY is
detected, the output of the
PWM1
pin is reversed. When T01MOD<TFF1> is "0", the
PWM1
pin changes
from the "L" to "H" level. When T01MOD<TFF1> is "1", the
PWM1
pin changes from the "H" to "L"
level.
If any of PWMAD3 to 0 is "1", an additional pulse that corresponds to 1 count of the source clock is
inserted in specific cycles of the duty pulse. In other words, the
PWM1
pin output is reversed at the timing
of 1. When T00MOD<TFF0> is "0", the period of the "L" level becomes longer than the
value set to PWMDUTY by 1 source clock. When T00MOD<TFF0> is "1", the period of the "H" level
becomes longer than the value set to PWMDUTY by 1 source clock. This function allows 16 cycles of
output pulses to be handled with a resolution nearly equivalent to 12 bits.
No additional pulse is inserted when PWMAD3 to 0 are all "0".
Subsequently, the up counter continues counting up. When the up counter value reaches 256, an over-
flow occurs and the up counter is cleared to "0x00". At the same time, the output of the
PWM1
pin is
reversed. When T01MOD<TFF1> is "0", the
PWM1
pin changes from the "H" to "L" level. When
T01MOD<TFF1> is "1", the
PWM1
pin changes from the "L" to "H" level. At this time, an INTT00 inter-
Timer start
Additional
pulse
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
PWM1 pin output
(TFF1=“1”)
Timer stop
Timer stop
PWM1 pin output
(TFF1=“0”)
INTT00 interrupt
request
INTT01 interrupt
request
Cycle
When PWMAD1=“1”
Additional
pulse
Timer start
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
PWM1 pin output
(TFF1=“1”)
PWM1 pin output
(TFF1=“0”)
INTT00 interrupt
request
INTT01 interrupt
request
Cycle
When PWMAD0 = “1” and PWMAD2 = “1”
Additional
pulse
Additional
pulse
Additional
pulse
Additional
pulse
Additional
pulse
Summary of Contents for TLCS-870/C1 Series
Page 1: ...8 Bit Microcontroller TLCS 870 C1 Series TMP89FM42 查询TMP89FM42供应商 捷多邦 专业PCB打样工厂 24小时加急出货 ...
Page 3: ...Revision History Date Revision 2007 10 25 1 First Release 2007 11 3 2 Contents Revised ...
Page 4: ......
Page 14: ......
Page 18: ...1 3 Block Diagram TMP89FM42 1 3 Block Diagram Figure 1 2 Block Diagram ...
Page 22: ...1 4 Pin Names and Functions TMP89FM42 ...
Page 60: ...2 CPU Core 2 5 Revision History TMP89FM42 ...
Page 76: ...3 Interrupt Control Circuit 3 8 Revision History TMP89FM42 ...
Page 86: ...4 External Interrupt control circuit 4 3 Function TMP89FM42 ...
Page 102: ...7 Voltage Detection Circuit 7 5 Revision History TMP89FM42 ...
Page 126: ...8 I O Ports 8 3 I O Port Registers TMP89FM42 Note 2 i 0 to 1 ...
Page 136: ...8 I O Ports 8 5 Revision History TMP89FM42 ...
Page 142: ...9 Special Function Registers 9 3 SFR3 0x0E40 to 0x0EFF TMP89FM42 ...
Page 146: ...10 Low Power Consumption Function for Peripherals TMP89FM42 ...
Page 149: ...TMP89FM42 11 3 Revision History Rev Description RA001 Deleted SLEEP2 description ...
Page 150: ...11 Divider Output DVO 11 3 Revision History TMP89FM42 ...
Page 220: ...15 Real Time Clock RTC 15 4 Real Time Clock Operation TMP89FM42 ...
Page 250: ...16 Asynchronous Serial Interface UART 16 15 Revision History TMP89FM42 ...
Page 302: ...18 Serial Bus Interface SBI 18 7 Revision History TMP89FM42 ...
Page 338: ...21 Flash Memory 21 4 Toggle Bit D6 TMP89FM42 ...
Page 384: ...22 Serial PROM Mode 22 15 Revision History TMP89FM42 ...
Page 388: ...24 Input Output Circuit 24 1 Control Pins TMP89FM42 ...
Page 404: ...25 Electrical Characteristics 25 11 Revision History TMP89FM42 ...
Page 406: ...26 Package Dimensions TMP89FM42 ...
Page 408: ......