EM78P813

8-bit OTP Micro-controller

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* This specification is subject to change without notice.

43

2004/8/19

(V1.6)

1/0

auto increase / auto decrease

Bit 7 (DA2_ID) : DATA RAM address(IOC6 and IOC7 register) automatic increase/decrease switch. Set to 1 means

auto_increase, clear to 0 means auto_decrease.

1/0

auto increase / auto decrease

PAGE1 Data RAM data buffer2

7

6

5

4

3

2

1

0

RAM2D7 RAM2D6 RAM2D5 RAM2D4 RAM2D3 RAM2D2 RAM2D1 RAM2D0

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

Collocation RC~RE PAGE2 , user can move a large number continue data from an address to another in data RAM.

Example(move data from 0x0000 to 0x1000):

BC

R3,@5

MOV

A , @0xF0

;Enable Rata RAM flag1 and flag2 auto_increase function

IOW

0x05

BS

R3 , @5

:Set correspond PAGE

BS

R3 , @6

BC

R3 , @7

MOV

A , @0x00

;Assign DATA RAM index1 start address”0x0000”

MOV

0x0D , A

MOV

0x0E , A

IOW

0x06

; Assign DATA RAM index2 start address”0x1000”

MOV

A , @0x10

IOW

0x07

MOV

A , 0x0C

;Read data from index1(address:0x0000)

IOW

0x05

;Write data to index2(address:0x1000)

MOV

A , 0x0C

;Read data from index1(address:0x0001)

IOW

0x05

;Write data to index2(address:0x1001)

:

:

IOC6 PORT 6 I/O Control , Data RAM address(L)

PAGE0 PORT 6 I/O Control

7

6

5

4

3

2

1

0

IOC67

IOC66

IOC65

IOC64

IOC63

IOC62

IOC61

IOC60

Bit 0~Bit 7 (IOC60 ~ IOC67) : PORT6(0~7) I/O direction control register

0

put the relative I/O pin as output

1

put the relative I/O pin into high impedance

PAGE1 Data RAM Address2(L)

7

6

5

4

3

2

1

0

RAM2A7 RAM2A6 RAM2A5 RAM2A4 RAM2A3 RAM2A2 RAM2A1 RAM2A0

Bit 0~Bit 7 (RAM2A0 ~ RAM2A7) : Data RAM address (address0 to address7) for RAM reading or writing

IOC7 PORT 7 I/O Control , Data RAM Address2(H)

PAGE0 PORT 7 I/O Control

7

6

5

4

3

2

1

0

IOC77

IOC76

IOC75

IOC74

IOC73

IOC72

IOC71

IOC70

Bit 0~Bit 7 (IOC70 ~ IOC77) : PORT7(0~7) I/O direction control register

0

put the relative I/O pin as output

1

put the relative I/O pin into high impedance