H838024 datasheet(218/697 Pages) RENESAS

Part #	H838024

Description	Renesas 8-Bit Single-Chip Microcomputer Super Low Power Series

PDF	697 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

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Section 6 ROM

Rev. 7.00 Mar 10, 2005 page 176 of 652

REJ09B0042-0700

6.10.2

Programmer Mode Commands

The following commands are supported in programmer mode.

• Memory Read Mode

• Auto-Program Mode

• Auto-Erase Mode

• Status Read Mode

Status polling is used for auto-programming, auto-erasing, and status read modes. In status read

mode, detailed internal information is output after the execution of auto-programming or auto-

erasing. Table 6.13 shows the sequence of each command. In auto-programming mode, 129 cycles

are required since 128 bytes are written at the same time. In memory read mode, the number of

cycles depends on the number of address write cycles (n).

Table 6.13

Command Sequence in Programmer Mode

1st Cycle

2nd Cycle

Command Name

Number

of Cycles

Mode

Address

Data

Mode

Address

Data

Memory read

1 + n

Write

H'00

Read

Dout

Auto-program

129

Write

H'40

Write

Din

Auto-erase

Write

H'20

Write

H'20

Status read

Write

H'71

Write

H'71

n: the number of address write cycles

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