3069RF-ZTAT Datasheet, PDF (618/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

Table 18.6 Usable Parameters and Target Modes
Name of
Parameter
Download
pass/fail result
Abbrevia- Down- Initiali- Program- Erasure R/W
tion
load zation ming
DPFR
—
—
—
R/W
Initial
Value
Undefined
Flash pass/fail FPFR
—
result
R/W Undefined
Flash
programming/
erasing
frequency
control
FPEFEQ —
—
—
R/W Undefined
Flash user
FUBRA —
branch address
set parameter
—
—
R/W Undefined
Flash
FMPAR —
—
multipurpose
address area
—
R/W Undefined
Flash
FMPDR —
—
multipurpose
data destination
area
—
R/W Undefined
Flash erase
FEBS
—
—
—
block select
R/W Undefined
Note: * One byte of start address of download destination specified by FTDAR
Alloca-
tion
On-
chip
RAM*
R0L of
CPU
ER0 of
CPU
ER1 of
CPU
ER1 of
CPU
ER0 of
CPU
ER0 of
CPU
(1) Download Control
The on-chip program is automatically downloaded by setting the SCO bit to 1. The on-chip RAM
area to be downloaded is the area as much as 4 kbytes starting from the start address specified by
FTDAR. For the address map of the on-chip RAM, see figure 18.10.
The download control is set by using the programming/erasing interface register. The return value
is given by the DPFR parameter.
(a) Download pass/fail result parameter (DPFR: one byte of start address of on-chip RAM
specified by FTDAR)
This parameter indicates the return value of the download result. The value of this parameter can
be used to determine if downloading is executed or not. Since the confirmation whether the SCO
bit is set to 1 is difficult, the certain determination must be performed by setting one byte of the
start address of the on-chip RAM area specified by FTDAR to a value other than the return value
of download (for example, H'FF) before the download start (before setting the SCO bit to 1).
Refer to item 18.5.2 (e) for information on the method for checking the download result.
Rev. 5.0, 09/04, page 596 of 978