HD64F2149YV datasheet(749/1075 Pages) RENESAS

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Section 22 ROM

Rev. 3.00 Jan 18, 2006 page 721 of 1044

REJ09B0280-0300

22.10.3

Programmer Mode Operation

Table 22.12 shows how the different operating modes are set when using programmer mode, and

table 22.13 lists the commands used in programmer mode. Details of each mode are given below.

• Memory Read Mode

Memory read mode supports byte reads.

• Auto-Program Mode

Auto-program mode supports programming of 128 bytes at a time. Status polling is used to

confirm the end of auto-programming.

• Auto-Erase Mode

Auto-erase mode supports automatic erasing of the entire flash memory. Status polling is used

to confirm the end of auto-erasing.

• Status Read Mode

Status polling is used for auto-programming and auto-erasing, and normal termination can be

confirmed by reading the FO6 signal. In status read mode, error information is output if an

error occurs.

Table 22.12 Settings for Each Operating Mode in Programmer Mode

Pin Names

Mode

FO0 to FO7

FA0 to FA17

Read

Data output

Ain*

Output disable

Hi-Z

Command write

Data input

Ain*

Chip disable*

Hi-Z

Notes: 1. Chip disable is not a standby state; internally, it is an operation state.

2. Ain indicates that there is also address input in auto-program mode.

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