p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 514

• 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)
Table 19.4 Parameters and Target Modes
Note:
(1)
The on-chip program is automatically downloaded by setting the SCO bit to 1. The on-chip RAM
area where the program is to be downloaded is the 2-Kbyte area starting from the address
specified by FTDAR.
Download control is set by the programming/erasing interface registers, and the DPFR parameter
indicates the return value.
(a)
This parameter indicates the return value of the download result. The value of this parameter can
be used to determine if downloading was executed or not. Since confirmation whether the SCO bit
is set to 1 or not is difficult, certain determination must be gained by setting a value other than the
return value of download (for example, H'FF) to the single byte of the start address specified by
FTDAR before download starts (before setting the SCO bit to 1).
Rev. 1.00 Sep. 21, 2006 Page 476 of 658
REJ09B0310-0100
Parameter Name
Download
pass/fail result
Flash pass/fail
result
Flash
programming/
erasing frequency
control
Flash
multipurpose
address area
Flash
multipurpose data
destination area
Flash erase block
select
Download Control
Download pass/fail result parameter (DPFR: single byte of start address specified by
FTDAR)
*
A single byte of the download start address specified by FTDAR.
Abbrevia-
tion
DPFR
FPFR
FPEFEQ
FMPAR
FMPDR
FEBS
Down-
load
Ο





Initializa-
tion

Ο
Ο



Program-
ming

Ο

Ο
Ο

Erasure R/W

Ο



Ο
R/W
R/W
R/W
R/W
R/W
R/W
Initial
Value
Undefined On-chip RAM*
Undefined R0L of CPU
Undefined ER0 of CPU
Undefined ER1 of CPU
Undefined ER0 of CPU
Undefined R0L of CPU
Allocation