h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 713
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h8s-2646
Manufacturer Part Number
h8s-2646
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2646.pdf
(1165 pages)
- Current page: 713 of 1165
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20.5.6
FLPWCR enables or disables a transition to the flash memory power-down mode when the LSI
switches to subactive mode.
Bit 7—Power-Down Disable (PDWND): Enables or disables a transition to the flash memory
power-down mode when the LSI switches to subactive mode. For details, see section 20.12, Flash
Memory and Power-Down States.
Bits 6 to 0—Reserved: These bits always read 0.
20.6
When pins are set to on-board programming mode and a reset-start is executed, a transition is
made to the on-board programming state in which program/erase/verify operations can be
performed on the on-chip flash memory. There are two on-board programming modes: boot mode
and user program mode. The pin settings for transition to each of these modes are shown in table
20.6. For a diagram of the transitions to the various flash memory modes, see figure 20.2.
Table 20.6 Setting On-Board Programming Modes
Bit 7
PDWND
0
1
Mode
Boot mode
User program mode
Initial value:
On-Board Programming Modes
Flash Memory Power Control Register (FLPWCR)
Description
Transition to flash memory power-down mode enabled
Transition to flash memory power-down mode disabled
R/W:
Bit:
PDWND
R/W
7
0
Expanded mode
Single-chip mode
Expanded mode
Single-chip mode
—
R
6
0
—
R
5
0
FWE
1
1
—
R
4
0
Rev. 5.00 Sep 22, 2005 page 687 of 1136
MD2
0
0
1
1
—
R
3
0
—
R
2
0
MD1
1
1
1
1
REJ09B0257-0500
Section 20 ROM
—
R
1
0
(Initial value)
MD0
0
1
0
1
—
R
0
0
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