ML610Q421/ML610Q422 User’s Manual
Contents
Contents – 2
4.2.6
Block Control Register 2 (BLKCON2)................................................................................................. 4-7
4.2.7
Block Control Register 3 (BLKCON3)................................................................................................. 4-8
4.2.8
Block Control Register 4 (BLKCON4)................................................................................................. 4-9
4.3
Description of Operation.............................................................................................................................. 4-11
4.3.1
Program Run Mode.............................................................................................................................. 4-11
4.3.2
HALT Mode......................................................................................................................................... 4-11
4.3.3
STOP Mode.......................................................................................................................................... 4-12
4.3.3.1
STOP Mode When CPU Operates with Low-Speed Clock ............................................................ 4-12
4.3.3.2
STOP Mode When CPU Operates with High-Speed Clock............................................................ 4-13
4.3.3.3
Note on Return Operation from STOP/HALT Mode ...................................................................... 4-14
4.3.4
Block Control Function ....................................................................................................................... 4-15
Chapter 5
5.
Interrupts (INTs) ................................................................................................................................................ 5-1
5.1
Overview ........................................................................................................................................................ 5-1
5.1.1
Features .................................................................................................................................................. 5-1
5.2
Description of Registers................................................................................................................................. 5-2
5.2.1
List of Registers ..................................................................................................................................... 5-2
5.2.2
Interrupt Enable Register 1 (IE1) .......................................................................................................... 5-3
5.2.3
Interrupt Enable Register 2 (IE2) .......................................................................................................... 5-4
5.2.4
Interrupt Enable Register 3 (IE3) .......................................................................................................... 5-5
5.2.5
Interrupt Enable Register 4 (IE4) .......................................................................................................... 5-6
5.2.6
Interrupt Enable Register 5 (IE5) .......................................................................................................... 5-7
5.2.7
Interrupt Enable Register 6 (IE6) .......................................................................................................... 5-8
5.2.8
Interrupt Enable Register 7 (IE7) .......................................................................................................... 5-9
5.2.9
Interrupt Request Register 0 (IRQ0) ................................................................................................... 5-10
5.2.10
Interrupt Request Register 1 (IRQ1) ................................................................................................... 5-11
5.2.11
Interrupt Request Register 2 (IRQ2) ................................................................................................... 5-12
5.2.12
Interrupt Request Register 3 (IRQ3) ................................................................................................... 5-13
5.2.13
Interrupt Request Register 4 (IRQ4) ................................................................................................... 5-14
5.2.14
Interrupt Request Register 5 (IRQ5) ................................................................................................... 5-15
5.2.15
Interrupt Request Register 6 (IRQ6) ................................................................................................... 5-16
5.2.16
Interrupt Request Register 7 (IRQ7) ................................................................................................... 5-17
5.3
Description of Operation.............................................................................................................................. 5-18
5.3.1
Maskable Interrupt Processing ............................................................................................................ 5-19
5.3.2
Non-Maskable Interrupt Processing .................................................................................................... 5-19
5.3.3
Software Interrupt Processing ............................................................................................................. 5-19
5.3.4
Notes on Interrupt Routine .................................................................................................................. 5-20
5.3.5
Interrupt Disable State ......................................................................................................................... 5-23
Chapter 6
6.
Clock Generation Circuit ................................................................................................................................... 6-1
6.1
Overview ........................................................................................................................................................ 6-1
6.1.1
Features .................................................................................................................................................. 6-1
6.1.2
Configuration ......................................................................................................................................... 6-1
6.1.3
List of Pins ............................................................................................................................................. 6-2
6.2
Description of Registers................................................................................................................................. 6-2
6.2.1
List of Registers ..................................................................................................................................... 6-2
6.2.2
Frequency Control Register 0 (FCON0) ............................................................................................... 6-3
6.2.3
Frequency Control Register 1 (FCON1) ............................................................................................... 6-5
6.3
Description of Operation................................................................................................................................ 6-6
6.3.1
Low-Speed Clock................................................................................................................................... 6-6
6.3.1.1
Low-Speed Clock Generation Circuit................................................................................................ 6-6
6.3.1.2
Operation of Low-Speed Clock Generation Circuit .......................................................................... 6-7
6.3.2
High-Speed Clock.................................................................................................................................. 6-8
6.3.2.1
500 kHz RC Oscillation ..................................................................................................................... 6-8
6.3.2.2
Crystal/Ceramic Oscillation Mode..................................................................................................... 6-9