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H838024 Datasheet(PDF) 230 Page - Renesas Technology Corp

Part # H838024
Description  Renesas 8-Bit Single-Chip Microcomputer Super Low Power Series
PDF  697 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H838024 Datasheet(HTML) 230 Page - Renesas Technology Corp

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Section 6 ROM
Rev. 7.00 Mar 10, 2005 page 188 of 652
REJ09B0042-0700
6.10.8
Programmer Mode Transition Time
Commands cannot be accepted during the oscillation stabilization period or the programmer mode
setup period. After the programmer mode setup time, a transition is made to memory read mode.
Table 6.22
Stipulated Transition Times to Command Wait State
Item
Symbol
Min
Max
Unit
Notes
Oscillation stabilization time(crystal oscillator)
Tosc1
10
—
ms
Figure 6.20
Oscillation stabilization time(ceramic oscillator)
Tosc1
5—
ms
Programmer mode setup time
Tbmv
10
—
ms
Vcc hold time
Tdwn
0—
ms
tosc1
tbmv
tdwn
Vcc
RES
Auto-program mode
Auto-erase mode
Figure 6.20 Oscillation Stabilization Time, Boot Program Transfer Time,
and Power-Down Sequence
6.10.9
Notes on Memory Programming
1. When performing programming using programmer mode on a chip that has been
programmed/erased in an on-board programming mode, auto-erasing is recommended before
carrying out auto-programming.
2. The flash memory is initially in the erased state when the device is shipped by Renesas
Technology. For other chips for which the erasure history is unknown, it is recommended that
auto-erasing be executed to check and supplement the initialization (erase) level.



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