HD64F2357VF13 Datasheet, PDF(635/1049 Page) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

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HD64F2357VF13 Datasheet, PDF (635/1049 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

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19.13.3 Programmer Mode Operation

Table 19-19 shows how the different operating modes are set when using programmer mode, and table 19-20 lists the

commands used in programmer mode. Details of each mode are given below.

â¢ Memory Read Mode

Memory read mode supports byte reads.

â¢ 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.

â¢ 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.

â¢ Status Read Mode

Status polling is used for auto-programming and auto-erasing, and normal termination can be confirmed by reading the

I/O6 signal. In status read mode, error information is output if an error occurs.

Table 19-19 Settings for Each Operating Mode in Programmer Mode

Mode

FWE

CE

Read

H or L

L

Output disable H or L

L

Command write H or L*3 L

Chip disable*1

H or L

H

Legend:

H: High level

L: Low level

Hi-Z: High impedance

Ã: Donât care

Pin Names

OE

WE

I/O0 to I/O7 A0 to A16

L

H

Data output Ain

H

H

Hi-Z

Ã

H

L

Data input Ain*2

Ã

Ã

Hi-Z

Ã

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.

*3 For command writes when making a transition to auto-program or auto-erase mode, input a high level to the

FWE pin.

Rev.6.00 Oct.28.2004 page 605 of 1016

REJ09B0138-0600H

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