hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 230

• Manufacturer Part Number: hd64338023s
• Description: Renesas 8-bit Single-chip Microcomputer Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

Section 6 ROM
6.10.8
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
Oscillation stabilization time(crystal oscillator)
Oscillation stabilization time(ceramic oscillator)
Programmer mode setup time
Vcc hold time
6.10.9
1. When performing programming using programmer mode on a chip that has been
2. The flash memory is initially in the erased state when the device is shipped by Renesas
Rev. 7.00 Mar 10, 2005 page 188 of 652
REJ09B0042-0700
programmed/erased in an on-board programming mode, auto-erasing is recommended before
carrying out auto-programming.
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.
RES
Vcc
Programmer Mode Transition Time
Figure 6.20 Oscillation Stabilization Time, Boot Program Transfer Time,
Notes on Memory Programming
t
osc1
t
bmv
and Power-Down Sequence
Auto-program mode
Auto-erase mode
Symbol
T
T
T
T
osc1
osc1
bmv
dwn
Min
10
5
10
0
Max
—
—
—
—
t
Unit
ms
ms
ms
ms
dwn
Notes
Figure 6.20