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MC68HC705L28 Datasheet(PDF) 10 Page - Motorola, Inc |
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MC68HC705L28 Datasheet(HTML) 10 Page - Motorola, Inc |
10 / 156 page MOTOROLA ii MC68HC05L28 TABLE OF CONTENTS Paragraph Number Page Number TITLE 3 MEMORY AND REGISTERS 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 Input/output programming .....................................................................................4-1 4.2 Ports A and B ........................................................................................................4-2 4.3 Port D ....................................................................................................................4-2 4.4 Port registers .........................................................................................................4-3 4.4.1 Port data registers (PORTA, PORTB and PORTD) .........................................4-3 4.4.2 Data direction registers (DDRA, DDRB and DDRD)........................................4-3 4.4.3 Port D control register (COND) ........................................................................4-4 4.4.4 Port D select register (SELD) ..........................................................................4-4 5 CORE TIMER 5.1 Real time interrupts (RTI) ......................................................................................5-2 5.2 Computer operating properly (COP) watchdog timer ............................................5-3 5.3 Core timer registers ...............................................................................................5-3 5.3.1 Core timer control and status register (CTCSR) ..............................................5-3 5.3.2 Core timer counter register (CTCR).................................................................5-5 5.4 Core timer during WAIT .........................................................................................5-5 5.5 Core timer during STOP ........................................................................................5-5 TPG 8 |
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