MC68HC05BD3 Datasheet, PDF (10/112 Pages) Motorola, Inc – HCMOS microcontroller

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Number
TITLE
4
RESETS AND INTERRUPTS
Page
Number
4.1 RESETS ................................................................................................................4-1
4.1.1 Power-On Reset (POR) ...................................................................................4-1
4.1.2 RESET Pin.......................................................................................................4-1
4.1.3 Illegal Address (ILADR) Reset.........................................................................4-2
4.1.4 Computer Operating Properly (COP) Reset ....................................................4-2
4.2 INTERRUPTS........................................................................................................4-3
4.2.1 Non-maskable Software Interrupt (SWI) ..........................................................4-3
4.2.2 Maskable Hardware Interrupts.........................................................................4-5
4.2.2.1
External Interrupt (IRQ)..............................................................................4-5
4.2.2.2
Sync Signal Processor Interrupt.................................................................4-7
4.2.2.3
M-Bus Interrupts.........................................................................................4-7
4.2.2.4
Multi-Function Timer Interrupts ..................................................................4-8
5
MULTI-FUNCTION TIMER
5.1 MFT Counter Register ...........................................................................................5-1
5.2 MFT Control and Status Register ..........................................................................5-1
5.3 COP Watchdog......................................................................................................5-2
6
PULSE WIDTH MODULATION
6.1 PWM Registers .....................................................................................................6-1
6.2 General Operation .................................................................................................6-1
7
M-BUS SERIAL INTERFACE
7.1
7.2
7.2.1
7.2.2
7.2.3
7.2.4
7.2.5
7.2.6
7.2.7
7.2.8
7.3
M-Bus Interface Features ......................................................................................7-1
M-Bus Protocol ......................................................................................................7-2
START Signal...................................................................................................7-3
Slave Address Transmission ............................................................................7-3
Data Transfer....................................................................................................7-4
Repeated START Signal ..................................................................................7-4
STOP Signal ....................................................................................................7-4
Arbitration Procedure .......................................................................................7-4
Clock Synchronization .....................................................................................7-5
Handshaking .................................................................................................... 7-5
M-Bus Registers ....................................................................................................7-5
MOTOROLA
ii
TPG
MC68HC05BD3