
ML62Q1000 Series User's Manual
Chapter 29 Safety Function
FEUL62Q1000
29-17
[Note]
Ÿ
For "Overflow value setting" in Figure 29-4, set the value so that the overflow period of the 16-bit timer n
is to be shorter than that of the functional timer n.
If the functional timer n overflows, it disables the accurate check. Be careful to prevent overflow of the
functional timer n.
29.3.4 CRC Calculation
The CRC (Cyclic Redundancy Check) calculation detects data errors including arbitrary data errors. Two CRC modes are
available as described below. Choose one of those depending on the intended use.
See Chapter 19, "CRC Calculator" for details of its operation.
Table 29-1 CRC Calculation Mode
CRC calculation
Description
Automatic CRC
calculation
mode
Automatically performs calculation of the program code area in units of 32
bits in the HALT/HALT-H mode.
Manual CRC
calculation
mode
Performs calculation of arbitrary data written from the CPU or DMAC in units
of 8 bits.
29.3.5 WDT Counter Read
The count value can be read from the watchdog timer counter register (WDTMC). Periodic checks of the count value
allow confirmation that the watchdog timer is normally counting.
See Chapter 10 "Watchdog Timer" for its operation.
29.3.6 Port Output Level Test
When the general-purpose port is used as an output pin, the output data can be read by setting the input/output mode.
See Chapter 17 "General-purpose Port" for its operation.
29.3.7 Successive Approximation Type A/D Converter Test
The self test can be performed by A/D-converting the full scale, zero scale and internal reference voltage.
See Chapter 23 "Successive Approximation Type A/D Converter" for details.
29.3.8 Clock Backup Function and Its Test
The built-in test function automatically switches the low-speed crystal oscillation to the low-speed RC oscillation, when
the oscillation is stopped.
See Chapter 6 "Clock Generation Circuit" for details.
Содержание ML62Q1000 Series
Страница 17: ...Chapter 1 Overview...
Страница 112: ...Chapter 2 CPU and Memory Space...
Страница 154: ...Chapter 3 Reset Function...
Страница 166: ...Chapter 4 Power Management...
Страница 196: ...Chapter 5 Interrupts...
Страница 248: ...Chapter 6 Clock generation Circuit...
Страница 274: ...Chapter 7 Low Speed Time Base Counter...
Страница 291: ...Chapter 8 16 Bit Timer...
Страница 320: ...Chapter 9 Functional Timer FTM...
Страница 382: ...Chapter 10 Watchdog Timer...
Страница 402: ...Chapter 11 Serial Communication Unit...
Страница 456: ...Chapter 12 I2 C Bus Unit...
Страница 491: ...Chapter 13 I2 C Master...
Страница 512: ...Chapter 14 DMA Controller...
Страница 531: ...Chapter 15 Buzzer...
Страница 550: ...Chapter 16 Simplified RTC...
Страница 559: ...Chapter 17 GPIO...
Страница 594: ...Chapter 18 External Interrupt Function...
Страница 612: ...Chapter 19 CRC Generator...
Страница 632: ...Chapter 20 Analog Comparator...
Страница 644: ...Chapter 21 D A Converter...
Страница 655: ...Chapter 22 Voltage Level Supervisor...
Страница 676: ...Chapter 23 Successive Approximation Type A D Converter...
Страница 709: ...Chapter 24 Regulator...
Страница 714: ...Chapter 25 Flash Memory...
Страница 743: ...Chapter 26 Code Option...
Страница 750: ...Chapter 27 LCD Driver...
Страница 788: ...Chapter 28 On Chip Debug Function...
Страница 795: ...Chapter 29 Safety Function...
Страница 813: ...Appendix A...
Страница 881: ...Revision History...