EM78862C 查看數據表（PDF） - ELAN Microelectronics

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EM78862C

8-Bit Microcontroller

ELAN Microelectronics 

EM78862C

8-Bit RISC Type Microprocessor

6.1.5 R4 (Register Bank Select Register) --- Page 0

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

RBK1

RBK0

RSR5

RSR4

RSR3

RSR2

RSR1

RSR0

Bit 0 ~ Bit 5 (RSR0 ~ RSR5): Indirect addressing for common Registers R20 ~ R3F

RSR bits are used to select up to 32 registers (R20 to

R3F) in indirect addressing mode.

Bit 6 ~ Bit 7 (RBK0 ~ RBK1): Bank selection bits for common Registers R20 ~ R3F

These selection bits are used to determine which bank

is activated among the 4 banks of 32 registers (R20 to

R3F) each.

(Refer to Fig. 3, Data Memory Configuration for the control register Configuration

details.)

6.1.6 R5 (Program Page Select Register) --- Page 0

Bit 7

-

Bit 6

-

Bit 5

-

Bit 4

-

Bit 3

PS3

Bit 2

PS2

Bit 1

PS1

Bit 0

PS0

Bit 0 ~ 3 (PS0 ~ PS3): Page select bits as shown below:

PS3

PS2

PS1

PS0

0

0

0

0

0

0

0

1

0

0

1

0

::

1

1

1

0

1

1

1

1

Program Memory

Page (Address)

Page 0

Page 1

Page 2

::

Page 14

Page 15

You can use PAGE instruction to change and maintain program page. Otherwise, use

far jump (FJMP) or far call (FCALL) MACRO instructions to program user's code.

ELAN’s complier supports program page maintenance and can change your program

by inserting the appropriate instructions within the program.

Bit 4 ~ 7: Not used

6.1.7 R7 (Port 7) --- Page 0

Bit 7

P77

Bit 6

P76

Bit 5

P75

Bit 4

P74

Bit 3

P73

Bit 2

P72

Bit 1

P71

Bit 0

P70

Bit 0 ~ Bit 7 (P70 ~ P77): 8-bit PORT7 (0 ~ 7) I/O data register

You can use IOC7 Page 0 register to define each bit as input

or output.

Product Specification (V2.1) 07.13.2005

•9

(This specification is subject to change without further notice)

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