EM78P813

8-bit OTP Micro-controller

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* This specification is subject to change without notice.

32

2004/8/19

(V1.6)

PAGE1 LCD Data buffer

7

6

5

4

3

2

1

0

LCDD7

LCDD6

LCDD5

LCDD4

LCDD3

LCDD2

LCDD1

LCDD0

Bit 0 ~

Bit 7 (LCDD0 ~ LCDD7) : LCD data buffer for LCD RAM reading or writing

Example.

MOV

A,@0

MOV

R9_PAGE1,A

MOV

RA_PAGE1,A

;ADDRESS

MOV

A,@0XAA

MOV

RB_PAGE1,A

;WRITE DATA 0XAA TO LCD RAM

MOV

A,RB_PAGE1

;READ DATA FROM LCD RAM

:

PAGE2 KEY Strobe Control Register

7

6

5

4

3

2

1

0

STRB7

STRB6

STRB5

STRB4

STRB3

STRB2

STRB1

STRB0

Bit 0 ~ Bit 7 (STRB0 ~ STRB7) : Key strobe control bits

These key strobe control registers correspond to SEGMENT50 ~ SEGMENT57 or Port80 ~ Port87 (decided by

CHIPSEL pin). Please refer KEYSTOBE explanation (RE page3).

PAGE3 Tone 2 Control Register

7

6

5

4

3

2

1

0

T27

T26

T25

T24

T23

T22

T21

T20

Bit 0~Bit 7(T20~T27) : Tone generator1‘s frequency divider and power control. Please refer to RA

Page3 Tone1 control register for detail.

RC Port C I/O Data , Data RAM data buffer , Tone 2 generator

PAGE0 Port C I/O Data

7

6

5

4

3

2

1

0

PC7

PC6

PC5

PC4

PC3

PC2

PC1

PC0

Bit 0 ~ Bit 7 (PC0 ~ PC7) : 8-bit PORTC ( 0~7 ) I/O data register

User can use IOC register to define input or output each bit.

PAGE1 Data RAM data buffer1

7

6

5

4

3

2

1

0

RAM1D7 RAM1D6 RAM1D5 RAM1D4 RAM1D3 RAM1D2 RAM1D1 RAM1D0

Bit 0 ~ Bit 7 (RAM1D0 ~ RAM1D7) : Data RAM data buffer1 for RAM reading or writing.

Example.

MOV

A,@1

MOV

RD_PAGE1,A

MOV

A,@0

MOV

RE_PAGE1,A

MOV

A,@0x55

MOV

RC_PAGE1,A

;write data 0x55 to DATA RAM which address is "0001".

MOV

A,RC_PAGE1

;read data

: