Section 17 Flash Memory
Rev. 3.00 Sep. 27, 2007 Page 591 of 758
REJ09B0243-0300
Table 17.6 Usable Parameters and Target Modes
Name of
Parameter
Abbrevia-
tion
Down-
load
Initiali-
zation
Pro-
gram-
ming
Erasure
R/W
Initial
Value
Allocation
Download pass/fail
result
DPFR
√
— —
— R/W
Undefined
On-chip
RAM
*
Flash pass/fail
result
FPFR —
√
√
√
R/W Undefined R0 of CPU
Flash
programming/
erasing frequency
control
FPEFEQ —
√
—
—
R/W Undefined R4 of CPU
Flash user branch
address set
FUBRA —
√
—
—
R/W Undefined R5 of CPU
Flash multipurpose
address area
FMPAR —
—
√
—
R/W Undefined R5 of CPU
Flash multipurpose
data destination
area
FMPDR —
—
√
—
R/W Undefined R4 of CPU
Flash erase block
select
FEBS — — —
√
R/W Undefined R4 of CPU
Note:
*
One byte of start address of download destination specified by FTDAR
(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 3 Kbytes starting from the start address
specified by FTDAR. For the address map of the on-chip RAM, see figure 17.10.
The download control is set by using the programming/erasing interface registers. 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). For the checking method of download
results, see section 17.5.2 (2), Programming Procedure in User Program Mode.
Содержание SH7124 R5F7124
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