EM78P451SWM 参数 Datasheet PDF下载

Contents

Contents

1

2

3

4

GENERAL DESCRIPTION................................................................................................... 1

FEATURES........................................................................................................................... 1

PIN ASSIGNMENT ............................................................................................................... 2

FUNCTION DESCRIPTION.................................................................................................. 4

4.1

Operational Registers ..................................................................................................4

4.1.1

4.1.2

4.1.3

4.1.4

4.1.5

4.1.6

4.1.7

4.1.8

4.1.9

4.1.10

4.1.11

4.1.12

4.1.13

4.1.14

4.1.15

R0 (Indirect Address Register) ...................................................................................... 4

R1 (TCC) ....................................................................................................................... 4

R2 (Program Counter) & Stack...................................................................................... 4

R3 (Status Register) ...................................................................................................... 6

R4 (RAM Select Register) ............................................................................................. 6

R5~R8 (Port 5 ~ Port8).................................................................................................. 7

R9 (Port9) ...................................................................................................................... 7

RA (SPIRB: SPI Read Buffer)........................................................................................ 8

RB (SPIWB: SPI Write Buffer)....................................................................................... 8

RC (SPIS: SPI Status Segister)..................................................................................... 8

RD (SPIC: SPI Control Register)................................................................................... 9

RE (TMR1: Timer1 register) ........................................................................................ 10

RF (PWP: Pulse width preset register)........................................................................ 10

R20~R3E (General Purpose Register)........................................................................ 10

R3F (Interrupt Status Register) ................................................................................... 10

A (Accumulator) ........................................................................................................... 10

CONT (Control Register) ............................................................................................. 11

IOC5 ~ IOC9 (I/O Port Control Register)..................................................................... 11

IOCC (T1CON: Timer1 control register) ...................................................................... 11

IOCD (Pull-high Control Register) ............................................................................... 12

IOCE (WDT Control Register) ..................................................................................... 12

IOCF (Interrupt Mask Register) ................................................................................... 13

4.2

Special Purpose Registers .........................................................................................10

4.2.1

4.2.2

4.2.3

4.2.4

4.2.5

4.2.6

4.2.7

4.3

4.4

4.5

TCC/WDT Presacler ..................................................................................................14

I/O Ports .....................................................................................................................15

SERIAL PERIPHERAL INTERFACE MODE..............................................................17

4.5.1

4.5.2

4.5.3

4.5.4

4.5.5

4.5.6

Overview & Features ................................................................................................... 17

SPI Function Description ............................................................................................. 19

SPI Signal & Pin Description ....................................................................................... 20

Programmed the related registers............................................................................... 22

SPI Mode Timing ......................................................................................................... 24

Software Application of SPI ......................................................................................... 25

Overview...................................................................................................................... 30

Function description .................................................................................................... 30

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4.6

Timer 1 .......................................................................................................................30

4.6.1

4.6.2

Product Specification (V1.0) 06.01.2004