YR0K42378FC000BA Renesas Electronics America, YR0K42378FC000BA Datasheet - Page 994

Manufacturer Part Number

YR0K42378FC000BA

KIT EVAL FOR H8S/2378

Manufacturer

Renesas Electronics America

For Use With/related Products

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

Section 21 Flash Memory (0.18-μm F-ZTAT Version)

After adjustment of the bit rate, the protocol for communications between the host and the boot

program is as shown below.

1. One-byte commands and one-byte responses

2. n-byte commands or n-byte responses

3. Error response

4. Programming of 128 bytes

5. Memory read response

Rev.7.00 Mar. 18, 2009 page 926 of 1136

REJ09B0109-0700

These commands and responses are comprised of a single byte. These are consists of the

inquiries and the ACK for successful completion.

These commands and responses are comprised of n bytes of data. These are selections and

responses to inquiries.

The amount of programming data is not included under this heading because it is determined

in another command.

The error response is a response to inquiries. It consists of an error response and an error code

and comes two bytes.

The size is not specified in commands. The size of n is indicated in response to the

programming unit inquiry.

This response consists of 4 bytes of data.

Communications Protocol

Figure 21.18 Bit-Rate-Adjustment Sequence

H'00 (Completion of adjustment)

H'E6 (Boot response)

H'00 (30 times maximum)

H'FF (error)

Boot Program

Measuring the

1-bit length