
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.
Summary of Contents for ML62Q1000 Series
Page 17: ...Chapter 1 Overview...
Page 112: ...Chapter 2 CPU and Memory Space...
Page 154: ...Chapter 3 Reset Function...
Page 166: ...Chapter 4 Power Management...
Page 196: ...Chapter 5 Interrupts...
Page 248: ...Chapter 6 Clock generation Circuit...
Page 274: ...Chapter 7 Low Speed Time Base Counter...
Page 291: ...Chapter 8 16 Bit Timer...
Page 320: ...Chapter 9 Functional Timer FTM...
Page 382: ...Chapter 10 Watchdog Timer...
Page 402: ...Chapter 11 Serial Communication Unit...
Page 456: ...Chapter 12 I2 C Bus Unit...
Page 491: ...Chapter 13 I2 C Master...
Page 512: ...Chapter 14 DMA Controller...
Page 531: ...Chapter 15 Buzzer...
Page 550: ...Chapter 16 Simplified RTC...
Page 559: ...Chapter 17 GPIO...
Page 594: ...Chapter 18 External Interrupt Function...
Page 612: ...Chapter 19 CRC Generator...
Page 632: ...Chapter 20 Analog Comparator...
Page 644: ...Chapter 21 D A Converter...
Page 655: ...Chapter 22 Voltage Level Supervisor...
Page 676: ...Chapter 23 Successive Approximation Type A D Converter...
Page 709: ...Chapter 24 Regulator...
Page 714: ...Chapter 25 Flash Memory...
Page 743: ...Chapter 26 Code Option...
Page 750: ...Chapter 27 LCD Driver...
Page 788: ...Chapter 28 On Chip Debug Function...
Page 795: ...Chapter 29 Safety Function...
Page 813: ...Appendix A...
Page 881: ...Revision History...