ML620Q503/Q504 User's Manual
Chapter 24 RC Oscillation Type A/D Converter
FEUL620Q504 24-16
When the RCON signal is set to “1”, Counter A starts counting of the base clock (BSCLK). When the RARUN
bit is reset due to overflow of Counter B, Counter A stops counting.
The final count value “nA1” of Counter A is the CLK count value during the gate time “nB1 x t
RCCLK
” and is
expressed by the following expression:
nA1
≅
nB1•
t
RCCLK
∝
1
t
BSCLK
f
RCCLK
That is, “nA1” is a value inversely proportional to the RC oscillation frequency f
RCCLK
.
Figure 24-7 Operation Timing in Counter B Reference Mode
RARUN
BSCLK
t
BSCLK
RCON
Counter A
000000H
000001H
000002H
000003H
nA1-3
nA1-2
nA1-1
nA1
Overflow
(100000H-nB1)
(+1)
(+2)
0FFFFFDH
0FFFFFEH
000000H
RCCLK
Counter B
CR oscillator circuit
Input waveform
IN0/IN1
t
RCCLK
nA0 • t
BSCLK
RADINT
(Interrupt)
Request
nA0 : Reference count value
nB0 : Measurement count
Gate time
nB1 • t
RCCLK
0FFFFFFH
Содержание LAPIS SEMICONDUCTOR ML620Q503
Страница 2: ...ML620Q503 Q504 User s Manual Issue Date Apr 16 2015 FEUL620Q504 01...
Страница 18: ...Chapter 1 Overview...
Страница 32: ...Chapter 2 CPU and Memory Space...
Страница 44: ...Chapter 3 Reset Function...
Страница 50: ...Chapter 4 Power Management...
Страница 70: ...Chapter 5 Interrupts...
Страница 134: ...Chapter 6 Clock Generation Circuit...
Страница 161: ...Chapter 7 Time Base Counter...
Страница 170: ...Chapter 8 Timers...
Страница 183: ...Chapter 9 Function Timer FTM...
Страница 231: ...Chapter 10 Watchdog Timer...
Страница 239: ...Chapter 11 Synchronous Serial Port SSIO...
Страница 251: ...Chapter 12 Synchronous Serial Port with FIFO SSIOF...
Страница 283: ...Chapter 13 UART...
Страница 303: ...Chapter 14 UART with FIFO UARTF...
Страница 327: ...Chapter 15 I2 C Bus Interface...
Страница 344: ...Chapter 16 Port XT...
Страница 350: ...Chapter 17 Port 0...
Страница 361: ...Chapter 18 Port 1...
Страница 368: ...Chapter 19 Port2...
Страница 379: ...Chapter 20 Port 3...
Страница 395: ...Chapter 21 Port 4...
Страница 410: ...Chapter 22 Port 5...
Страница 426: ...Chapter 23 Melody Driver...
Страница 439: ...Chapter 24 RC Oscillation type A D Converter RC ADC...
Страница 462: ...Chapter 25 Successive Approximation Type A D Converter SA ADC...
Страница 479: ...Chapter 26 Analog Comparator...
Страница 489: ...Chapter 27 Flash Memory Control...
Страница 505: ...Chapter 28 Voltage Level Supervisor VLS...
Страница 517: ...Chapter 29 LLD circuit...
Страница 519: ...Chapter 30 On Chip Debug Function...
Страница 522: ...Appendixes...
Страница 552: ...Revision History...