COP8CDR9 datasheet(39/112 Pages) TI1

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COP8CBR9, COP8CCR9, COP8CDR9

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SNOS535I – OCTOBER 2000 – REVISED MARCH 2013

5.10.7 MICROWIRE/PLUS ISP

TI Semiconductor provides a program, which is available from our web site at www.ti.com, that is capable

of programming a device from the parallel port of a PC. The software accepts manually input commands

and is capable of downloading standard Intel HEX Format files.

Users who wish to write their own MICROWIRE/PLUS ISP host software should refer to the COP8 FLASH

ISP User Manual, available from the same web site. This document includes details of command format

and delays necessary between command bytes.

The MICROWIRE/PLUS ISP supports the following features and commands:

•

Write a value to the ISP Write Timing Register. NOTE: This must be the first command after entering

MICROWIRE/PLUS ISP mode.

•

Erase the entire flash program memory (mass erase).

•

Erase a page at a specified address.

•

Read Option register.

•

Read a byte from a specified address.

•

Write a byte to a specified address.

•

Read multiple bytes starting at a specified address.

•

Write multiple bytes starting at a specified address.

•

Exit ISP and return execution to flash program memory.

The following table lists the MICROWIRE/PLUS ISP commands and provides information on required

parameters and return values.

Table 5-9. MICROWIRE/PLUS ISP Commands

Command

Function

Parameters

Return Data

Value (Hex)

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

Data Byte if Security not

Low

set. 0xFF if Security set.

Option Register if address

= 0xFFFF, regardless of

Security

BLOCKR

Block Read

0xA3

Address High, Address

n Data Bytes if Security

Low, Byte Count (n) High,

not set.

Byte Count (n) Low

n Bytes of 0xFF if Security

≤ n ≤ 32767

set.

WRITE_BYTE

Write Byte

0x71

Address High, Address

N/A

Low, Data Byte

BLOCKW

Block Write

0x8F

Address High, Address

N/A

Low, Byte Count (0

≤ n ≤

16), n Data Bytes

EXIT

0xD3

N/A

N/A (Device will Reset)

INVALID

N/A

Any other invalid

N/A

command will be ignored

5.10.8 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.

Functional Description

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Product Folder Links: COP8CBR9 COP8CCR9 COP8CDR9

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