COP8CSDR9KMT7 datasheet(31/80 Pages) NSC

31 / 80 page

11.0 In-System Programming

(Continued)

•

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

TABLE 11. User ISP/Virtual E

2 Entry Points

Command/

Label

Function

Command

Entry Point

Parameters

Return Data

cpgerase

Page Erase

0x17

with the high byte of the address.

user with the low byte of the address.

N/A (A page of memory beginning at

ISPADHI, ISPADLO will be erased)

cmserase

Mass Erase

0x1A

Accumulator A contains the

confirmation key 0x55.

N/A (The entire Flash Memory will be

erased)

creadbf

Read Byte

0x11

with the high byte of the address.

user with the low byte of the address.

Data Byte in Register ISPRD.

cblockr

Block Read

0x26

with the high byte of the address.

user with the low byte of the address.

X pointer contains the beginning RAM

address where the result(s) will be

returned.

number of n bytes to read

≤ n ≤ 255). It is up to the user to

setup the segment register.

n Data Bytes, Data will be returned

beginning at a location pointed to by

the RAM address in X.

cwritebf

Write Byte

0x14

with the high byte of the address.

user with the low byte of the address.

Byte to be written.

N/A

cblockw

Block Write

0x23

with the high byte of the address.

user with the low byte of the address.

number of n bytes to write (0

≤ n ≤ 16).

The combination of the

BYTECOUNTLO and the ISPADLO

registers must be set such that the

operation will not cross a 64 byte

boundary.

X pointer contains the beginning RAM

address of the data to be written.

It is up to the user to setup the

segment register.

N/A

exit

EXIT

0x62

N/A

N/A (Device will Reset)

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