HD6432138SW datasheet(697/1061 Pages) RENESAS

697 / 1061 page

Section 22 ROM (H8S/2138 F-ZTAT A-Mask Version, H8S/2134 F-ZTAT A-Mask Version)

Rev. 4.00 Jun 06, 2006 page 643 of 1004

REJ09B0301-0400

area can be used when the programming control program transferred into the RAM enters the

execution state. A stack area should be set up as required.

H'(FF)E080

H'(FF)E088

H'(FF)EFFF

H'(FF)E880

Programming

control program

area

(2040 bytes)

ID code area

H'(FF)FF00

H'(FF)FF7F

Boot program

area*

(128 bytes)

Boot program

area*

(1920 bytes)

Note: * The boot program area cannot be used until a transition is made to the execution state

for the programming control program transferred to the RAM. Note that the boot program

remains stored in this area after a branch is made to the programming control program.

Figure 22.10 RAM Areas in Boot Mode

In the boot mode of this chip, the content in the 8-byte ID code area shown below is confirmed so

that whether or not there is a programming control program that corresponds to the chip can be

checked.

H'(FF)E080

↑ (Product identification code)

H'(FF)E088 ~

Instruction code for programming control program

When a new programming-control program for use in boot mode is created, add the 8-byte ID

code described above to the head of the program.

Notes on Use of Boot Mode:

• When the chip comes out of reset in boot mode, it measures the low period of the input at the

SCI’s RxD1 pin. The reset should end with RxD1 high. After the reset ends, it takes about 100

states for the chip to get ready to measure the low period of the RxD1 input.

HD6432138SW Datasheet(PDF) 697 Page - Renesas Technology Corp