COP8-REF-AM datasheet(27/83 Pages) NSC

27 / 83 page

11.0 In-System Programming

(Continued)

The following table lists the MICROWIRE/PLUS ISP com-

mands and provides information on required parameters and

return values.

TABLE 10. MICROWIRE/PLUS ISP Commands

Command

Function

Command

Value (Hex)

Parameters

Return Data

PGMTIM_SET

Write Pulse Timing

0x3B

Value

N/A

PAGE_ERASE

Page Erase

0xB3

Starting Address of

Page

N/A

MASS_ERASE

Mass Erase

0xBF

Confirmation Code

N/A (The entire Flash

Memory will be erased)

READ_BYTE

Read Byte

0x1D

Address High, Address

Low

Data Byte if Security not

set. 0xFF if Security set.

Option Register if address

= 0xFFFF, regardless of

Security

BLOCKR

Block Read

0xA3

Address High, Address

Low, Byte Count (n)

High, Byte Count (n)

Low

≤ n ≤ 32767

n Data Bytes if Security

not set.

n Bytes of 0xFF if

Security set.

WRITE_BYTE

Write Byte

0x71

Address High, Address

Low, Data Byte

N/A

BLOCKW

Block Write

0x8F

Address High, Address

Low, Byte Count (0

≤ n

≤ 16), n Data Bytes

N/A

EXIT

0xD3

N/A

N/A (Device will Reset)

INVALID

N/A

Any other invalid

command will be

ignored

N/A

Note: The user must ensure that Block Writes do not cross a 64 byte boundary within one operation.

11.8 USER ISP AND VIRTUAL E

The following commands will support transferring blocks of

data from RAM to flash program memory, and vice-versa.

The user is expected to enforce application security in this

case.

•

Erase the entire flash program memory (mass erase).

NOTE: Execution of this command will force the device

into the MICROWIRE/PLUS ISP mode.

•

Erase a page of flash memory at a specified address.

•

Read a byte from a specified address.

•

Write a byte to a specified address.

•

Copy a block of data from RAM into flash program

memory.

•

Copy a block of data from program flash memory to RAM.

The following table lists the User ISP/Virtual E

2 commands,

required parameters and return data, if applicable. The com-

mand entry point is used as an argument to the JSRB

instruction. Table 12 lists the Ram locations and Peripheral

Registers, used for User ISP and Virtual E

2, and their ex-

pected contents. Please refer to the COP8 FLASH ISP User

Manual for additional information and programming ex-

amples on the use of User ISP and Virtual E

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