
ML62Q1000 Series User's Manual
Chapter 26 Code Option
FEUL62Q1000
26-1
26. Code Option
26.1 General Description
The code option is used to choose the CPU operating mode, PLL reference frequency, watchdog timer operation clock,
etc. depending on values written in the code option area of the program memory space.
The hardware automatically refers to data in the code option area when the microcontroller starts up due to one of system
resets described below to set each function.
• Power-on detection reset
• VLS (Voltage Level Supervisor) reset
• RESET_N input pin reset
• Watchdog timer (WDT) overflow reset
• Watchdog timer (WDT) invalid clear reset
• RAM parity error reset
• Unused ROM area access reset
The code option area can be erased or programmed through the on-chip debug function, self-rewrite function of flash
memory, or ISP function.
Figure 26-1 Code Option Overview
26.1.1 Function List
The following choices are available by the code option.
Ÿ
Enabling or disabling the unused ROM area access reset
Ÿ
Enabling or disabling the remapping function
Ÿ
Watchdog timer operation clock (low-speed oscillation LSCLK/WDT oscillation)
Ÿ
Enabling or disabling the watchdog timer operation
Ÿ
PLL reference frequency (16 MHz or 24 MHz)
Ÿ
CPU operation mode (wait mode or no-wait mode)
Ÿ
The software remap or hardware remap is selectable for the remap function
WDT clock
Updated at power-on detection reset,
or any other system reset
Code option setting circuit
CPU operation mode
No-wait mode
PLL=16MHz
WDT=Low-speed
RC oscillation
and etc.
Code option area
64 bytes
Program
code area
0H
Others
Peripheral
circuits,
control circuits
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...