p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 495

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

The flash memory has the following features. Figure 19.1 shows a block diagram of the flash
memory.
19.1
• Size
• Two flash-memory MATs according to LSI initiation mode
• Programming/erasing interface by the download of on-chip program
• Programming/erasing time
• Number of programming
• Three on-board programming modes
Product Classification
H8S/2125
The on-chip flash memory has two memory spaces in the same address space (hereafter
referred to as memory MATs). The mode setting at initiation determines which memory MAT
is initiated first. The MAT can be switched by using the bank-switching method after
initiation.
 The user MAT is initiated at a power-on reset in user mode: 512 Kbytes
 The user boot memory MAT is initiated at a power-on reset in user boot mode: 8 Kbytes
This LSI has a dedicated programming/erasing program. After downloading this program to
the on-chip RAM, programming/erasing can be performed by setting the argument parameter.
The flash memory programming time is 3 ms (typ) in 128-byte simultaneous programming,
and approximately 25 µs per byte. The erasing time is 1000 ms (typ) per 64-Kbyte block.
The number of flash memory programming can be up to 100 times at the minimum. (The value
ranged from 1 to 100 is guaranteed.)
 Boot mode
 User program mode
Section 19 Flash Memory (0.18-µm F-ZTAT Version)
This mode is a program mode that uses an on-chip SCI interface. The user MAT and user
boot MAT can be programmed. In this mode, the bit rate between the host and this LSI can
be automatically adjusted.
The user MAT can be programmed by using the optional interface.
Features
R4F2125
512 Kbytes
ROM Size
Section 19 Flash Memory (0.18-µm F-ZTAT Version)
ROM Addresses
H'000000 to H'07FFFF (mode 2)
H'0000 to H'DFFF (mode 3)
Rev. 1.00 Sep. 21, 2006 Page 457 of 658
REJ09B0310-0100