SH7052 datasheet(751/919 Pages) RENESAS

751 / 919 page

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20.11.2

Programmer Mode Operation

Table 20.13 shows how the different operating modes are set when using programmer mode, and

table 20.14 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-programming.

• 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 20.13 Settings for Various Operating Modes In Programmer Mode

Pin Names

Mode

FWE

I/O7 to I/O0

A18 to A0

Read

H or L

Data output

Ain

Output disable

H or L

Hi-z

Command write

H or L

Data input

*Ain

Chip disable

H or L

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.

3. For command writes in auto-program and auto-erase modes, input a high level to the

FWE pin.

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