Contents
Contents
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General Description ...................................................................................... 1
Features ......................................................................................................... 1
Pin Configurations (Package) ...................................................................... 2
3.1 EM78P258NP/N Pin Assignments ..................................................................... 2
Functional Block Diagram ............................................................................ 3
Pin Descriptions ............................................................................................ 4
5.1 EM78P258NP/N Pin Description........................................................................ 4
Function Description..................................................................................... 5
4
5
6
6.1 Operational Registers......................................................................................... 5
6.1.1 R0 (Indirect Address Register)...........................................................................5
6.1.2 R1 (Time Clock /Counter)....................................................................................5
6.1.3 R2 (Program Counter) and Stack........................................................................5
6.1.3.1 Data Memory Configuration .................................................................7
6.1.4 R3 (Status Register)............................................................................................8
6.1.5 R4 (RAM Select Register)...................................................................................8
6.1.6 R5 ~ R6 (Port 5 ~ Port 6) ....................................................................................9
6.1.7 R7 (Port 7)...........................................................................................................9
6.1.8 R8 (AISR: ADC Input Select Register)..............................................................10
6.1.9 R9 (ADCON: ADC Control Register).................................................................11
6.1.10 RA (ADOC: ADC Offset Calibration Register)...................................................12
6.1.11 RB (ADDATA: Converted Value of ADC)...........................................................12
6.1.12 RC (ADDATA1H: Converted Value of ADC)......................................................13
6.1.13 RD (ADDATA1L: Converted Value of ADC) ......................................................13
6.1.14 RE (Interrupt Status 2 & Wake-Up Control Register)........................................13
6.1.15 RF (Interrupt Status 2 Register) ........................................................................14
6.1.16 R10 ~ R3F.........................................................................................................14
6.2 Special Purpose Registers ............................................................................... 15
6.2.1 A (Accumulator).................................................................................................15
6.2.2 CONT (Control Register)...................................................................................15
6.2.3 IOC50 ~ IOC70 (I/O Port Control Register) ......................................................16
6.2.4 IOC80 (TCCA Control Register)........................................................................16
6.2.5 IOC90 (TCCB and TCCC Control Register)......................................................17
6.2.6 IOCA0 (IR and TCCC Scale Control Register) .................................................17
6.2.7 IOCB0 (Pull-Down Control Register).................................................................19
6.2.8 IOCC0 (Open-Drain Control Register) ..............................................................19
6.2.9 IOCD0 (Pull-high Control Register)...................................................................20
6.2.10 IOCE0 (WDT Control & Interrupt Mask Registers 2) ........................................20
6.2.11 IOCF0 (Interrupt Mask Register).......................................................................21
6.2.12 IOC51 (TCCA Counter).....................................................................................22
Product Specification (V1.0) 06.16.2005
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ELAN [ ELAN MICROELECTRONICS CORP ]
