
Contents - 5
Chapter 15
Peripheral Functions ................................................................................ 15-1
15.1 Clock Out Function .................................................................................................. 15-1
Chapter 16
External Interrupt Requests .................................................................... 16-1
Chapter 17
Interrupt Request Processing ................................................................. 17-1
17.1 Non-Maskable Interrupt (NMI) ................................................................................. 17-2
17.2 Maskable Interrupts ................................................................................................. 17-4
(1) Interrupt Request Registers IRQ (IRQ0L, IRQ0H, IRQ1L) ............................... 17-6
(2) Interrupt Enable Registers IE (IE0L, IE0H, IE1L) ............................................. 17-6
(3) Master Interrupt Enable Flag .......................................................................... 17-6
(4) Master Interrupt Priority Flag .......................................................................... 17-6
(5) Interrupt Priority Control Registers
IPX0 (IP00L, IP00H, IP10L)
IPX1 (IP01L, IP01H) ..................................................................................... 17-6
17.3 Maskable Interrupt Operation .................................................................................. 17-7
Chapter 18
Bus Port Functions ................................................................................... 18-1
18.1 Bus Port (P0, P1, P9_0-P9_3) Functions ................................................................. 18-1
18.1.1 P0, P1, P9_0-P9_3 Operation During Program Memory Access ..................... 18-1
18.1.2 P0, P1, P9_0-P9_3 Operation During Data Memory Access ........................... 18-2
18.2 External Memory Access ......................................................................................... 18-3
18.2.1 External Program Memory Access .................................................................. 18-3
18.2.2 External Program Memory Access Timing ....................................................... 18-3
18.2.3 External Data Memory Access ......................................................................... 18-5
18.2.4 External Data Memory Access Timing ............................................................. 18-6
Chapter 19 Flash Memory .............................................................................................. 19-1
19.1 Summary .................................................................................................................. 19-1
19.2 Features ................................................................................................................... 19-1
19.3 Reprogramming Modes ........................................................................................... 19-2
19.4 Serial Mode .............................................................................................................. 19-3
19.4.1 Serial Mode Summary ...................................................................................... 19-3
19.4.2 Setting the Serial Mode .................................................................................... 19-3
(1) Pins Used for Serial Mode ................................................................................ 19-3
(2) Serial Mode Connections ................................................................................. 19-3
(3) Serial Mode Reprogramming Method .............................................................. 19-5
(4) Notes Regarding Serial Mode Usage ............................................................... 19-5
19.5 User Mode ............................................................................................................... 19-6
19.5.1 User Mode Summary ....................................................................................... 19-6
19.5.2 User Mode Reprogramming ............................................................................ 19-6
(1) Flash Memory Address Register (FLAADRS) ................................................... 19-7
(2) Flash Memory Acceptor (FLAACP) ................................................................... 19-8
(3) Flash Memory Control Register (FLACON) ...................................................... 19-8
(4) Flowchart Examples for User Mode ............................................................... 19-11