MC68HC05L28 Datasheet, PDF (10/156 Pages) Motorola, Inc – Flexible general-purpose microcomputer

Paragraph
Number
TITLE
3
MEMORY AND REGISTERS
Page
Number
3.1 Registers ...............................................................................................................3-1
3.2 LCD RAM ..............................................................................................................3-1
3.3 RAM ......................................................................................................................3-1
3.4 Programming registers ..........................................................................................3-3
3.4.1 EEPROM programming register (EEPROG) ...................................................3-3
3.4.1.1
CPEN — Charge pump enable ..................................................................3-3
3.4.1.2
ER1, ER0 — Erase select bits ...................................................................3-3
3.4.1.3
LATCH — EEPROM latch control ..............................................................3-4
3.4.1.4
EERC — EEPROM RC oscillator control...................................................3-4
3.4.1.5
EEPGM — EEPROM program control .......................................................3-4
3.4.2 EPROM programming register (PCR)..............................................................3-4
3.4.2.1
ELAT — EPROM latch control ...................................................................3-5
3.4.2.2
PGM — EPROM program control ..............................................................3-5
4
INPUT/OUTPUT PORTS
4.1
4.2
4.3
4.4
4.4.1
4.4.2
4.4.3
4.4.4
Input/output programming .....................................................................................4-1
Ports A and B ........................................................................................................4-2
Port D ....................................................................................................................4-2
Port registers .........................................................................................................4-3
Port data registers (PORTA, PORTB and PORTD) .........................................4-3
Data direction registers (DDRA, DDRB and DDRD)........................................4-3
Port D control register (COND) ........................................................................4-4
Port D select register (SELD) ..........................................................................4-4
5
CORE TIMER
5.1
5.2
5.3
5.3.1
5.3.2
5.4
5.5
Real time interrupts (RTI) ......................................................................................5-2
Computer operating properly (COP) watchdog timer ............................................5-3
Core timer registers ...............................................................................................5-3
Core timer control and status register (CTCSR)..............................................5-3
Core timer counter register (CTCR).................................................................5-5
Core timer during WAIT .........................................................................................5-5
Core timer during STOP ........................................................................................5-5
MOTOROLA
ii
TABLE OF CONTENTS
TPG
MC68HC05L28