p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 496

• Manufacturer Part Number: p2125vps20
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 19 Flash Memory (0.18-µm F-ZTAT Version)
• Programming/erasing protection
• Programmer mode
Rev. 1.00 Sep. 21, 2006 Page 458 of 658
REJ09B0310-0100
 User boot mode
Sets protection against flash memory programming/erasing via hardware, software, or error
protection.
This mode uses the PROM programmer. The user MAT and user boot MAT can be
programmed.
The user boot program of the optional interface can be made and the user MAT can be
programmed.
[Legend]
FCCS:
FPCS:
FECS:
FKEY:
FMATS: Flash MAT select register
FTDAR: Flash transfer destination address register
Note:
Mode pins
To read from or write to the registers, the FLSHE bit in the serial timer control
register (STCR) must be set to 1.
Flash code control status register
Flash program code select register
Flash erase code select register
Flash key code register
Figure 19.1 Block Diagram of Flash Memory
FMATS
FTDAR
FCCS
FPCS
FECS
FKEY
Operating
mode
Internal address bus
Internal data bus (16 bits)
Control unit
Flash memory
User MAT: 512 Kbytes
User boot MAT: 8 Kbytes
Memory MAT unit