MC68HC05SR3D Datasheet, PDF (10/96 Pages) Freescale Semiconductor, Inc – Microcontrollers

Paragraph
Number
TITLE
4
MEMORY AND REGISTERS
Page
Number
4.1 I/O Registers ......................................................................................................... 4-1
4.2 RAM ......................................................................................................................4-1
4.3 ROM ......................................................................................................................4-1
4.4 Memory Map ......................................................................................................... 4-2
4.5 I/O Registers Summary .........................................................................................4-3
5
RESETS AND INTERRUPTS
5.1 RESETS ................................................................................................................5-1
5.1.1 Power-On Reset (POR) ................................................................................... 5-1
5.1.2 RESET Pin.......................................................................................................5-1
5.1.3 Low Voltage Reset (LVR) .................................................................................5-2
5.2 INTERRUPTS........................................................................................................5-2
5.2.1 Non-maskable Software Interrupt (SWI) ..........................................................5-3
5.2.2 Maskable Hardware Interrupts.........................................................................5-5
5.2.2.1
External Interrupt (IRQ)..............................................................................5-5
5.2.2.2
External Interrupt 2 (IRQ2).........................................................................5-7
5.2.2.3
Timer Interrupt ........................................................................................... 5-7
5.2.2.4
Keyboard Interrupt (KBI) ............................................................................5-8
6
TIMER
6.1 Timer Overview .....................................................................................................6-1
6.2 Timer Control Register (TCR) ............................................................................... 6-3
6.3 Timer Data Register (TDR) ................................................................................... 6-4
6.4 Operation during Low Power Modes ..................................................................... 6-4
7
ANALOG TO DIGITAL CONVERTER
7.1 ADC Operation ...................................................................................................... 7-2
7.2 ADC Status and Control Register (ADSCR)..........................................................7-3
7.3 ADC Data Register (ADDR) .................................................................................. 7-4
7.4 ADC during Low Power Modes..............................................................................7-4
Freescale
ii
TPG
MC68HC05SR3