W77E516A 查看數據表（PDF） - Winbond

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W77E516A

8-BIT MICROCONTROLLER

Winbond 

W77E516A

other is the transmit buffer. Any read access gets data from the receive data buffer,

while write access is to the transmit data buffer.

P4.2 Base Address Low Byte Register

Bit:

7

6

5

4

3

2

1

0

A7

A6

A5

A4

A3

A2

A1

A0

Mnemonic: P42AL

Address: 9Ah

P4.2 Base Address High Byte Register

Bit:

7

6

5

4

3

2

1

0

A15 A14 A13 A12 A11 A10

A9

A8

Mnemonic: P42AH

Address: 9Bh

P4.3 Base Address Low Byte Register

Bit:

7

6

5

4

3

2

1

0

A7

A6

A5

A4

A3

A2

A1

A0

Mnemonic: P43AL

Address: 9Ch

P4.3 Base Address High Byte Register

Bit:

7

6

5

4

3

2

1

0

A15 A14 A13 A12 A11 A10

A9

A8

Mnemonic: P43AH

Address: 9Dh

ISP Control Register

Bit:

7

6

5

4

3

2

1

0

SWRST/HWB - LDAP

-

-

- LDSEL ENP

Mnemonic: CHPCON

Address: 9Fh

SWRST/HWB: Set this bit to launch a whole device reset that is same as asserting high to RST

pin, micro controller will be back to initial state and clear this bit automatically. To

read this bit, its alternate function to indicate the ISP hardware reboot mode is

invoking when read it in high.

LDAP: This bit is Read Only. High: device is executing the program in LDROM. Low: device is

executing the program in APROM.

LDSEL: Loader program residence selection. Set to high to route the device fetching code from

LDROM.

ENP: In System Programming Mode Enable. Set this be to launch the ISP mode. Device will

operate ISP procedures, such as Erase, Program and Read operations, according to

- 19 -

Publication Release Date: November 19, 2007

Revision A9

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