h8s-2172 Renesas Electronics Corporation., h8s-2172 Datasheet - Page 482

• Manufacturer Part Number: h8s-2172
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family H8s-2100 Series
• Manufacturer: Renesas Electronics Corporation.

6. A new bit rate should be selected with the new bit-rate selection (H'3F) command, according
7. After selection of the device and clock mode, the information of the user boot MAT and user
8. After making inquiries and selecting a new bit rate, issue the transition to programming/erasing
Programming/Erasing State: A programming selection command makes the boot program select
the programming method, a 128-byte programming command makes it program the memory with
data, and an erasing selection command and block erasing command make it erase the block. The
programming/erasing commands are listed below.
Table 14.13 Programming/Erasing Command
Rev. 2.00, 03/04, page 450 of 534
Command
H'42
H'43
H'50
H'48
H'58
H'52
H'4A
H'4B
H'4C
H'4D
H'4C
H'4D
H'4F
to the returned information on multiplication ratios and operating frequencies.
MAT should be made to inquire about the user boot MATs information inquiry (H'24), user
MATs information inquiry (H'25), erased block information inquiry (H'26), and programming
unit inquiry (H'27).
state command (H'40). The boot program will then enter the programming/erasing state.
Command Name
User boot MAT programming selection Transfers the user boot MAT programming
User MAT programming selection
128-byte programming
Erasing selection
Block erasing
Memory read
User boot MAT sum check
User MAT sum check
User boot MAT blank check
User MAT blank check
User boot MAT blank check
User MAT blank check
Boot program status inquiry
Description
program
Transfers the user MAT programming
program
Programs 128 bytes of data
Transfers the erasing program
Erases a block of data
Reads the contents of memory
Checks the checksum of the user boot MAT
Checks the checksum of the user MAT
Checks the blank data of the user boot MAT
Checks the blank data of the user MAT
Checks whether the contents of the user
boot MAT are blank
Checks whether the contents of the user
MAT are blank
Inquires into the boot program’s status